Conway's Game of Life

Mathematics and Construction

Pattern Files for Chapter 6: Periodic Circuitry

RLE, Macrocell, or LifeHistory code for all patterns that are displayed as figures in Chapter 6: Periodic Circuitry are provided here. These patterns can be viewed in-browser by clicking on the "Show in Viewer" link near the code, or the patterns can be viewed and manipulated by copying and pasting the RLE code into Game of Life software like Golly.

All pattern files from this chapter in a .zip archive file (0.04 Mb)
Figure 6.2: Gosper glider gun

A true period 30 glider gun. The first known gun and the first known finite pattern with unbounded growth.

RLE code: Select all
```x = 36, y = 9, rule = B3/S23 24bo11b\$22bobo11b\$12b2o6b2o12b2o\$11bo3bo4b2o12b2o\$2o8bo5bo3b2o14b\$2o8b o3bob2o4bobo11b\$10bo5bo7bo11b\$11bo3bo20b\$12b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.3: Buckaroo

The period 30 buckaroo can be used to reflect a glider.

RLE code: Select all
```x = 24, y = 13, rule = B3/S23 bo\$2bo\$3o2\$11bobo\$9bo3bo\$9bo\$8bo4bo8b2o\$9bo12b2o\$3b2o4bo3bo\$2bobo6bobo \$2bo\$b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.4(a): p30 relay

A way to reflect a glider 180 degrees using a pentadecathlon.

RLE code: Select all
```x = 23, y = 7, rule = B3/S23 bo\$2bo\$3o8b2o6b2o\$9bo4bo2bo4bo\$9bo4bo2bo4bo\$9bo4bo2bo4bo\$11b2o6b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.4(b): p30 180 reflect

A way to reflect a glider 180 degrees using two pentadecathlons.

RLE code: Select all
```x = 21, y = 20, rule = B3/S23 3bo\$4bo\$2b3o4b2o6b2o\$7bo4bo2bo4bo\$7bo4bo2bo4bo\$7bo4bo2bo4bo\$9b2o6b2o4\$ 3bo\$2b3o\$b2ob2o\$3ob3o\$3ob3o\$3ob3o\$3ob3o\$b2ob2o\$2b3o\$3bo! #C [[ GRID THEME BOOK ]]```
Figure 6.4(c): p30 90 reflect penta

A way to reflect a glider 90 degrees using two pentadecathlons.

RLE code: Select all
```x = 19, y = 21, rule = B3/S23 15bo\$16bo\$2bo6bo4b3o\$b2o6b2o\$3o6b3o\$b2o6b2o\$2bo6bo\$16bo\$15b3o\$14bobobo \$14bobobo\$15b3o\$16bo3\$16bo\$15b3o\$14bobobo\$14bobobo\$15b3o\$16bo! #C [[ GRID THEME BOOK ]]```
Figure 6.5: inverter non inline

A glider gun can fire its output at an irregular glider stream so as to invert that stream.

RLE code: Select all
```x = 237, y = 137, rule = B3/S23 2bo\$obo\$b2o10\$234b3o\$236bo\$235bo5\$227b2o\$226bobo\$228bo6\$219b3o\$221bo\$ 220bo\$32bo\$30bobo\$31b2o10\$204b3o\$206bo\$205bo5\$197b2o\$196bobo\$198bo6\$ 189b3o\$191bo\$190bo\$62bo\$60bobo\$61b2o10\$174b3o\$176bo\$175bo5\$167b2o\$166b obo\$168bo6\$159b3o\$161bo\$160bo\$92bo\$90bobo\$91b2o10\$144b3o\$146bo\$145bo5\$ 137b2o\$136bobo\$138bo6\$129b3o\$131bo\$130bo\$122bo\$120bobo\$121b2o2\$122b2o\$ 121bobo\$123bo2\$109b2o\$108bobo\$98b2o7b3o4b2o4bo\$98b2o6b3o4bo2b2obobo\$ 107b3o4b3obo3bo9b2o\$108bobo4b2obo3bo9b2o\$109b2o6b2o3bo\$119bobo\$120bo! #C [[ GRID THEME BOOK ]]```
Figure 6.6(a): inline inverter

An inline inverter, which can be used to invert a p30 glider stream.

RLE code: Select all
```x = 39, y = 31, rule = B3/S23 bo\$2bo\$3o6\$9bo\$7bobo\$8b2o5\$16bo\$17bo\$15b3o5\$30bo\$29bobo\$12b2o15b2obo\$ 12bobo14b2ob2o3b2o\$7b2o6bo13b2obo4b2o\$3b2obo2bo2bo2bo13bobo\$3b2o2b2o6b o14bo\$12bobo\$12b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.6(b): inline inverter p120

An inline inverter, inverting a p120 glider stream.

RLE code: Select all
```x = 205, y = 211, rule = B3/S23 bo\$2bo\$3o28\$31bo\$32bo\$30b3o28\$61bo\$62bo\$60b3o28\$91bo\$92bo\$90b3o28\$121b o\$122bo\$120b3o5\$135bo\$134bobo\$117b2o15b2obo\$117bobo14b2ob2o3b2o\$112b2o 6bo13b2obo4b2o\$108b2obo2bo2bo2bo13bobo\$108b2o2b2o6bo8bo5bo\$117bobo7bob o\$117b2o9b2o5\$136bo\$137bo\$135b3o6\$144bo\$142bobo\$143b2o13\$159bo\$157bobo \$158b2o5\$166bo\$167bo\$165b3o6\$174bo\$172bobo\$173b2o13\$189bo\$187bobo\$188b 2o5\$196bo\$197bo\$195b3o6\$204bo\$202bobo\$203b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.7: inline inverter bounce

Two Gosper glider guns (one acting as an inline inverter) bouncing back a glider in order to release a single glider.

RLE code: Select all
```x = 59, y = 37, rule = B3/S23 27bo\$26bobo\$9b2o15b2obo\$9bobo14b2ob2o3b2o\$4b2o6bo13b2obo4b2o\$2obo2bo2b o2bo13bobo\$2o2b2o6bo8bo5bo\$9bobo7bobo\$9b2o9b2o5\$28bo\$29bo\$27b3o2\$38bob o\$38b2o\$39bo2\$36bo\$34bobo\$35b2o5\$48bo\$40b2o6bobo\$31b2o18b2o\$29bo3bo17b 2o4b2o\$28bo5bo16b2o4b2o\$23b2o2b2obo3bo7b2obo2bobo\$23b2o3bo5bo8bobo2bo\$ 29bo3bo10bo\$31b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.8(a): inline inverter p120 gun

A period 120 glider gun based that works by bouncing a single glider back and forth against a stream of gliders that is being fed into an inline inverter.

RLE code: Select all
```x = 82, y = 86, rule = B3/S23 36b2o\$37bo\$37bobo\$38b2o4\$43b3o\$43bo\$44bo\$35b2o\$35bo\$27bo5bobo\$26bobo4b 2o\$9b2o15b2obo7bobo11b2o9b2o\$9bobo14b2ob2o6b2o12bobo7bobo\$4b2o6bo13b2o bo8bo6bo5bo8bo6b2o2b2o\$2obo2bo2bo2bo13bobo15bobo13bo2bo2bo2bob2o\$2o2b 2o6bo8bo5bo15bob2o13bo6b2o\$9bobo7bobo20b2ob2o14bobo\$9b2o9b2o21bob2o15b 2o\$38b2o4bobo\$37bobo5bo\$37bo\$36b2o\$28bo\$29bo\$27b3o5\$42bo\$41bobo\$24b2o 15b2obo\$24bobo14b2ob2o3b2o\$19b2o6bo13b2obo4b2o\$15b2obo2bo2bo2bo6b3o4bo bo\$15b2o2b2o6bo6bo7bo\$24bobo8b2o\$24b2o13\$51bo\$49bobo\$50b2o28\$81bo\$79bo bo\$80b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.8(b): inverter p120 gun

A period 120 glider gun based that works by bouncing a single glider back and forth against a stream of gliders that is being fed into a non-inline inverter.

RLE code: Select all
```x = 74, y = 50, rule = B3/S23 36b2o\$37bo\$37bobo\$38b2o4\$43b3o\$43bo\$44bo\$35b2o\$35bo\$27bo5bobo\$26bobo4b 2o\$9b2o15b2obo7bobo11b2o9b2o\$9bobo14b2ob2o6b2o12bobo7bobo\$4b2o6bo13b2o bo8bo6bo5bo8bo6b2o2b2o\$2obo2bo2bo2bo13bobo15bobo13bo2bo2bo2bob2o\$2o2b 2o6bo8bo5bo15bob2o13bo6b2o\$9bobo7bobo20b2ob2o14bobo\$9b2o9b2o21bob2o15b 2o\$38b2o4bobo\$37bobo5bo\$37bo\$36b2o\$28bo\$29bo\$27b3o18bobo\$47bo2bo\$46b2o 10bo6bo\$38b2o4b2o3bo8bo5bobo\$38b2o6b2o9bo6b2obo\$47bo2bo2b2o9b2ob2o3b2o \$36bo11bobo2bo2b3o5b2obo4b2o\$34bobo16b4o7bobo\$35b2o17b2o9bo4\$47bo\$43bo 2bo\$44b4o\$42b3o5\$38bobo\$38b2o\$39bo! #C [[ GRID THEME BOOK ]]```
Figure 6.9: stream inverter

A configuration of two glider streams and a block that inverts one of the streams and leaves the other one alone. The inverted stream goes southeast and a copy of the original stream goes southwest.

RLE code: Select all
```x = 9, y = 7, rule = B3/S23 4bo\$5bo\$3b3o2\$7bo\$2o4bo\$2o4b3o! #C [[ GRID THEME BOOK ]]```
Figure 6.10: glider duplicator

A pattern that can duplicate a (potentially irregular) glider stream of period 30n.

RLE code: Select all
```x = 47, y = 50, rule = B3/S23 39b2o\$39b2o7\$39bo\$38b3o\$37b5o\$36bobobobo\$36b2o3b2o3\$39bo\$38bobo\$38bob 2o\$39b3o\$30bo8bo2bo\$31bo8b3o\$29b3o7bo3bo\$38bo5bo\$33bo5bo3bo\$26b2o4bo7b 3o\$26b2o4b3o6\$25bo\$25bobo15b2o\$25b2o16bo\$44b3o\$46bo3\$18bo\$17bo\$17b3o\$ 13bo\$12bobo\$11bo3b2o6b2o\$2o9bo3bob2o4bobo\$2o9bo3bob3o4b3o\$12bobob2o2bo 4b3o6b2o\$13bo4b2o4b3o7b2o\$23bobo\$23b2o! b\$17bo! #C [[ GRID THEME BOOK ]]```
Figure 6.11: Glider pusher

A period 30 pattern that pushes a glider one half of a diagonal space away from it.

RLE code: Select all
```x = 45, y = 38, rule = B3/S23 6bo\$7bo\$5b3o\$29b2o\$29b2o\$bo\$2bo27bo\$3o26bobo\$14bo14bobo\$12bobo15bo\$13b 2o2\$27b2obob2o\$9bo17bo5bo\$7bobo18bo3bo\$8b2o11bo7b3o\$22bo\$20b3o3\$16bo 20bo4bo\$17bo17b2ob4ob2o\$15b3o19bo4bo\$26bobo\$27b2o\$27bo3\$24bo\$22bobo\$ 23b2o9bo\$35b2o\$34b2o3\$31bo\$32bo\$30b3o! #C [[ GRID THEME BOOK ]]```
Figure 6.12: glider to lwss

A p30 oscillator that uses two queen bees to turn a glider into an LWSS.

RLE code: Select all
```x = 21, y = 27, rule = B3/S23 19bo\$18bo\$11b2o5b3o\$9bo2bo\$8bo7b2o\$2o6bo6bo2bo\$2o6bo7b2o\$9bo2bo\$11b2o\$ 16bo\$15b3o\$14bo3bo\$16bo\$13bo5bo\$13bo5bo\$14bo3bo\$15b3o9\$15b2o\$15b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.13: lwss to glider

A p15 oscillator that uses two pentadecathlons to turn an LWSS into a glider.

RLE code: Select all
```x = 28, y = 19, rule = B3/S23 16bobo2bobo\$o2bo8b2obo2bo2bo2bob2o\$4bo11bobo2bobo\$o3bo\$b4o5\$7b3o\$6bo3b o\$5bo5bo2\$4bo7bo\$4bo7bo2\$5bo5bo\$6bo3bo\$7b3o! #C [[ GRID THEME BOOK ]]```
Figure 6.14: toggle

A glider gun that can be toggled on and off via a single glider.

RLE code: Select all
```x = 143, y = 126, rule = B3/S23 bo\$2bo\$3o21\$24bo\$22bobo\$23b2o20\$46bo\$47bo56b2o\$45b3o49b3o4b2o\$96b5o6b 2o10bo\$95bobo3bo5b3o7bobo\$95b2o3bo6b2o6b2o\$104b2o9b2o12b2o\$104b2o9b2o 12b2o\$117bobo\$107bo11bo\$66bo2bo26bo2bo7bobo\$65bo14b4o11bo11b2o\$59b2o4b o3bo10bo3bo10bo3bo12bo\$58bobo4b4o11bo14b4o12b2o\$60bo20bo2bo26bobo2\$ 108bo\$108b2o\$68bo38bobo\$40b2o27bo\$38bo3bo5bo2b3o13b3o49b2o\$32b2o3bo5bo 9bo3bo60b2o\$32b2o2b2obo3bo8bo4bobo60bo9bo\$37bo5bo16b2o17b2o47bobo\$38bo 3bo17b2o18bo19b2o14b2o9bobo11b2o\$40b2o18b2o18bobo5bobo10b2o13b3o7bo2bo 11b2o\$57bobo4b2o10bo4b2o5bo2bo8bo11bo5b2obo5bobo\$57bo6bobo7bobo14b2o 11b2o6bo5bo2bo6bobo\$66bo8b2o12bo3b2o8bobo12b2obo8bo\$66b2o23b2o9bo13b3o \$88bo2bo10bo2bo10b2o\$88bobo11bo\$103bobo\$83bo20b2o\$84bo\$82b3o6\$91bo\$89b obo\$90b2o5\$98bo\$99bo\$97b3o6\$106bo\$104bobo\$105b2o5\$113bo\$114bo\$112b3o6\$ 121bo\$119bobo\$120b2o5\$128bo\$129bo\$127b3o! #C [[ GRID THEME BOOK ]]```
Figure 6.15: prime lwss stream

A short lightweight spaceship stream with prime spacing.

RLE code: Select all
```x = 515, y = 4, rule = B3/S23 bo2bo26bo2bo56bo2bo56bo2bo116bo2bo56bo2bo116bo2bo56bo2bo\$o29bo59bo59bo 119bo59bo119bo59bo\$o3bo25bo3bo55bo3bo55bo3bo115bo3bo55bo3bo115bo3bo55b o3bo\$4o26b4o56b4o56b4o116b4o56b4o116b4o56b4o! #C [[ GRID THEME BOOK ]]```
Figure 6.16: glider lwss destroy

A glider and LWSS colliding in a way that destroys them both.

RLE code: Select all
```x = 5, y = 8, rule = B3/S23 bo\$bobo\$b2o2\$2b2o\$b4o\$2ob2o\$b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.18: period not 2 3 lwss gun

A period 120 LWSS gun with the property that every LWSS in an even- indexed position or multiple-of-3-indexed position is erased. Thus only 2 out of every 6 lightweight spaceships actually escape (the ones in positions 1 and 5 mod 6).

RLE code: Select all
```x = 208, y = 119, rule = B3/S23 74b2o\$74bo\$72bobo\$72b2o4\$66bo\$66b2o\$65bobo5\$47bo\$45b4o6b2o2b2o\$39b2o3b obob2o5b4obo2bobo\$39b2o2bo2bob3o5b2obo3bo3bo\$44bobob2o4bo12bo\$45b4o14b o4bo\$47bo19bo\$63bo3bo4b2o\$63bobo6bobo\$35b2o37bo\$35bo38b2o\$33bobo\$33b2o 5\$26bo\$26b2o\$25bobo4\$10bo7bo\$8bobo5b4o\$2o4b2o8b2o2bo2b2o\$2o4b2o11b2o2b 2o80b2o\$6b2o7bo10b2o78bo\$8bobo4bo10b3o77bobo6bobo\$10bo4bo10b2o79b2o4bo 3bo53b2o\$23b2o8b2o78bo19bo38bo\$23b2o8bobo76bo4bo14b4o36bobo\$35bo77bo 12bo4b2obobo36b2o\$35b2o76bo3bo3bob2o5b3obo2bo2b2o\$51b2o62bobo2bob4o5b 2obobo3b2o34b3o\$52bo54b2o11b2o2b2o6b4o\$52bobo8b2o42bobo23bo42bo\$53b2o 8b2o42bo70bo\$60b2o10bo4bo99b2o\$59b3o10bo4bobo90b2o6b2o\$60b2o10bo7b2o 88bo\$63b2o2b2o11b2o4b2o25bobo44b2o6bobo13b2o\$63b2o2bo2b2o8b2o4b2o25b2o 45b2o6b2o14bobo\$68b4o5bobo34bo31bo10b2o25bo11bo\$54b2o13bo7bo68bobo7b3o 6bo28bobo\$54bobo92b2o6b2o6bo15b2o9b2o12b2o\$54bo80b2o12b2o9b2o19b2o9b2o 12b2o\$135b2o12b2o9b2o15bo6b2o6b2o\$60bobo83bobo28bo6b3o7bobo\$60b2o84bo 11bo25b2o10bo\$61bo94bobo14b2o6b2o\$157b2o13bobo6b2o\$172bo\$171b2o3\$48b2o 48bobo64bo\$48b2o48b2o66bo\$45b2o10bo4bo36bo64b3o\$37b2o5b3o10bo4bobo\$37b 2o6b2o10bo7b2o\$48b2o2b2o11b2o4b2o102b2o\$48b2o2bo2b2o8b2o4b2o102b2o4b3o \$53b4o5bobo20bobo5bo67bo10b2o6b5o\$54bo7bo20bo3bo6bo66bobo7b3o5bo3bobo\$ 83bo10bo8bo60b2o6b2o6bo3b2o\$76b2o4bo4bo14b4o44b2o12b2o9b2o\$76b2o5bo5bo bo9b2obobo43b2o12b2o9b2o\$83bo3bobobo8b3obo2bo2b2o49bobo\$85bobobobo9b2o bobo3b2o49bo\$90bo11b4o\$103bo5\$180bo\$181bo\$179b3o\$8bo2bo56bo2bo56bo2bo\$ 7bo59bo59bo61bo\$7bo3bo55bo3bo55bo3bo55bobo\$7b4o56b4o56b4o55bobo\$185bo 2bo11b2o\$186bobo11b2o\$187bobo\$189bo2\$25b2o\$24bobo158bo\$24bo160bo\$23b2o 159bobo\$183b2ob2o\$182bo5bo\$185bo\$182b2o3b2o3\$184bo\$184bo\$183bo3\$185b2o \$185b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.20: breeder compact

A compact Gosper glider gun breeder.

RLE code: Select all
```x = 108, y = 128, rule = B3/S23 33b2o\$31b2ob2o13b2o\$31b4o13b4o\$32b2o14b2ob2o\$27bo22b2o\$26bo\$26b2o\$25b 2o\$47b2o\$41b3o3bobo\$20bo17b3o6bob2o\$21b2o15bo9b2o\$20b2o16b3o7bo2\$b6o\$o 5bo8bo33b2o\$6bo9b2o22b4o4b4o\$o4bo9b2o15bo2bo3bo3bo4b2ob2o\$2b2o32bo6bo 6b2o\$24bo7bo3bo2bo2bo\$11b2o9b3o3bo4b4o\$10bobo9b2o5b2o30bo2bo\$21bo6b3o 34bo6b2o\$22b2o5b2o30bo3bo4b2ob2o\$22b3o3bo4b4o25b4o4b4o\$24bo7bo3bo34b2o \$36bo\$32bo2bo\$60b3o7bo\$23b4o33bo9b2o\$o21bo3bo33b3o6bob2o\$b2o13bo9bo36b 3o3bobo\$2o15b2o3bo2bo43b2o\$15bob2o28b2o\$14bo\$15bo32b2o\$8b2o3b2o34b2o 21b2o\$8b2o2bobo55b2ob2o9bo2bo\$11bo2bo39b2o14b4o14bo\$14bo19bo17b2ob2o 14b2o11bo3bo\$9bo3bo20bobo15b4o29b4o13b4o\$8bo25b2o17b2o46bo3bo\$7b2ob2o 34b2o57bo\$8bo3bo2b2o28b4o52bo2bo\$8bob2o2bobo16bo11b2ob2o\$9b3o2b3o14b2o bo3bo2bo5b2o29bo13b2o6bo\$13bobo13b5o4bo3bo33bobo13b2o5bo2bo\$13b2o6b2o 6bo2bo4bo4b2o33b2o8bo4b2o9bo\$13bo7b2o6b5o4bo3bo43b3o4bob2o6bo\$31b2obo 3bo2bo5b2o6b5o25b2o6b5o4b2o\$17b2o14bo11b2ob2o4bo4bo13bo15b2o3b3o4bo\$ 17b2o26b4o10bo11bobo24b2o\$46b2o6bo3bo5b2o6b2o5bo2bo\$56bo7b2o17bo\$71bo 7bo3bo11b2o5b4o\$69b3o3bo4b4o9b2ob2o3bo3bo\$15bo29bo7b2o11b5o5b2o15b4o8b o\$14bobo5b2o20bobo5bo12bo9b3o16b2o5bo2bo\$14bobo4bobo20bobo4bob2o9bo5bo 5b2o\$15bo5b2o22bo4bobo11bo5b2o3bo4b4o\$50bobo12b2o4bo7bo3bo\$83bo\$79bo2b o3\$81bo2bo\$85bo\$52bobo12b2o4bo7bo3bo\$17bo5b2o22bo4bobo11bo5b2o3bo4b4o\$ 16bobo4bobo20bobo4bob2o9bo5bo5b2o\$16bobo5b2o20bobo5bo12bo9b3o16b2o5bo 2bo\$17bo29bo7b2o11b5o5b2o15b4o8bo\$71b3o3bo4b4o9b2ob2o3bo3bo\$73bo7bo3bo 11b2o5b4o\$58bo7b2o17bo\$48b2o6bo3bo5b2o6b2o5bo2bo\$19b2o26b4o10bo11bobo 24b2o\$19b2o14bo11b2ob2o4bo4bo13bo15b2o3b3o4bo\$33b2obo3bo2bo5b2o6b5o25b 2o6b5o4b2o\$15bo7b2o6b5o4bo3bo43b3o4bob2o6bo\$15b2o6b2o6bo2bo4bo4b2o33b 2o8bo4b2o9bo\$15bobo13b5o4bo3bo33bobo13b2o5bo2bo\$11b3o2b3o14b2obo3bo2bo 5b2o29bo13b2o6bo\$10bob2o2bobo16bo11b2ob2o\$10bo3bo2b2o28b4o52bo2bo\$9b2o b2o34b2o57bo\$10bo25b2o17b2o46bo3bo\$11bo3bo20bobo15b4o29b4o13b4o\$16bo 19bo17b2ob2o14b2o11bo3bo\$13bo2bo39b2o14b4o14bo\$10b2o2bobo55b2ob2o9bo2b o\$10b2o3b2o34b2o21b2o\$17bo32b2o\$16bo\$3b3o11bob2o28b2o\$5bo13b2o3bo2bo 43b2o\$4bo13bo9bo36b3o3bobo\$24bo3bo33b3o6bob2o\$25b4o33bo9b2o\$62b3o7bo2\$ 39b2o\$37b2ob2o31b2o\$25b3o5bo3b4o23b4o4b4o\$22bo2b3o3b2obo3b2o23bo3bo4b 2ob2o\$22bobo6bo3bo31bo6b2o\$13b2o7bo2b3o3b2obo3b2o23bo2bo\$13b2o10b3o5bo 3b4o\$37b2ob2o\$12bo5b3o18b2o5b2o5b4o\$10bo3bo5bo23b2ob2o3bo3bo\$15bo3bo 24b4o8bo\$10bo4bo29b2o5bo2bo\$11b5o\$23b3o14b2o9bo\$25bo12b5o8b3o\$24bo13b 2o4bo5bo3bo\$38b2o5b5o4bo\$40b2o4b4obob2o\$28b3o12b3ob2o3bo\$30bo18bobo\$ 29bo2\$53b4o\$35bo2bo13bo3bo\$39bo16bo\$35bo3bo12bo2bo\$36b4o! #C [[ GRID THEME BOOK ]]```
Figure 6.21: breeder ggg eater 1 stabilize

A breeder for the Gosper glider gun that is stabilized on one side by an eater 1 instead of a block.

RLE code: Select all
```x = 222, y = 173, rule = B3/S23 193b4o\$192bo3bo12bo2bo\$196bo16bo\$192bo2bo13bo3bo\$210b4o\$189b3o2\$188bo 2bo14b2o\$188bobo18bo\$183bo20b2o4b2o\$184bo18b2o6bo\$182b3o17b2o7bo\$203bo 3bo2bo\$208bo\$170b2o6bo\$167b3ob2o6bo22b2o5bo2bo\$167b5o5b3o21b4o8bo\$168b 3o30b2ob2o3bo3bo\$196b2o5b2o5b4o\$173bo20b2ob2o\$174bo7b3o5bo3b4o\$172b3o 4bo2b3o3b2obo3b2o\$179bobo6bo3bo17b2o5bo2bo\$179bo2b3o3b2obo3b2o12b4o8bo \$182b3o5bo3b4o11b2ob2o3bo3bo\$194b2ob2o12b2o5b4o\$196b2o3\$209b2o\$208b2o 7b3o\$209bo2bo6bo\$210bo6bobo\$212b2o3b2o\$158bo36b2o\$159bo36bo\$157b3o36b 3o18bo2bo\$221bo\$199bo2bo14bo3bo\$203bo14b4o\$182bobo14bo3bo\$182b2o16b4o\$ 183bo2\$192b4o\$167bobo11bo9bo3bo\$167b2o13b2o11bo\$168bo10b3o5b2o2bo2bo\$ 178b3o6b3o\$143bo35b3o5b2o2bo2bo\$144bo37b2o11bo\$142b3o36bo9bo3bo\$192b4o 2\$180b2o\$179b4o\$179b2ob2o\$156b2o5bo2bo14b2o\$155b4o8bo\$155b2ob2o3bo3bo\$ 122bobo32b2o5b4o\$122b2o\$123bo2\$128bo26b2o\$129bo24b2o7b3o\$127b3o25bo2bo 6bo\$156bo6bobo\$158b2o3b2o\$141b2o\$142bo\$142b3o18bo2bo\$167bo16b2o5bo2bo\$ 145bo2bo14bo3bo15b4o8bo\$149bo14b4o15b2ob2o3bo3bo\$77bobo48bobo14bo3bo 35b2o5b4o\$77b2o49b2o16b4o\$78bo50bo\$188bobo\$113bo24b4o44b2o3bo\$114bo11b o10bo3bo35bo8b3obob2o\$112b3o10bobo4b2o7bo44b3o4bo\$123b2o2bo3b4o2bo2bo 31b2o15bo3bo\$121b2obo5bo3b2o35bo7bo10b3o\$123b2o2bo3b4o2bo2bo30bo3bobob o10bo\$125bobo4b2o7bo30b3o\$126bo10bo3bo49bo2bo\$138b4o53bo\$173bo2bo14bo 3bo\$126b2o31bobo15bo14b4o\$83bobo39b4o30b2o12bo3bo\$83b2o40b2ob2o30bo13b 4o\$84bo42b2o2\$98bo49bo17b4o\$99bo49b2o3bo10bo3bo\$97b3o48b3o2bobo4b2o7bo \$151b2o2bo3b4o2bo2bo\$149b4o5bo3b2o\$129bobo17b4o2bo3b4o2bo2bo\$41bo87b2o 22bobo4b2o7bo\$41b3o86bo23bo10bo3bo\$44bo121b4o7b6o\$43b2o131bo5bo\$136b2o 16b2o26bo\$132b4ob2o14b4o19bo4bo\$132b6o15b2ob2o20b2o5bo2bo\$133b4o18b2o 32bo\$177bo7bo3bo\$83bo91b3o3bo4b4o\$84bo90b2o5b2o\$46b2o28b2o4b3o21b2o28b 3o3b3o3b3o3b3o3b3o3b3o5bo6b3o\$46bobo27bobo27bobo66b2o5b2o\$47b2o28b2o 28b2o66b3o3bo4b4o\$84bobo50bo39bo7bo3bo\$84b2o51b2o50bo\$85bo50bobo39b2o 5bo2bo\$166b4o6bo4bo\$165bo3bo12bo\$106bo2bo51bo7bo6bo5bo\$110bo45b7o2bo2b o8b6o\$95b2o9bo3bo44bo2b3ob2o\$40bo5b2o22bo5b2o11bo6bo10b4o45b7o2bo2bo\$ 39bobo4bobo20bobo4bobo9bobo2bo8b3o56bo7bo\$39bobo5b2o20bobo5b2o9bo3b2ob 2o3b2ob2o16b2o5bo2bo15bo17bo3bo12b2o\$40bo29bo18bo3b2obo5b3o15b4o8bo14b 2o17b4o3b4o4b4o\$93bo13b4o9b2ob2o3bo3bo13bobo23bo3bo4b2ob2o\$89bo3bo12bo 3bo11b2o5b4o9b2o32bo6b2o\$83bo26bo28b3ob2o27bo2bo\$73b2o6bo3bo3b2o7bo7bo 2bo29b5o8bo\$42b2o28b4o10bo11bo13bo27b3o9b2o16bo8bo\$42b2o28b2ob2o4bo4bo 23bo2bo13b2o22bobo12bo3bo7b4o\$37b2o24b3ob2o5b2o6b5o23bo3bo11b2ob2o34bo 3bo3b8obo\$36bo2bo6b2o14b2o5bo33b2o5bo3bo12bo2bo35bo6bo8b2o\$39b2o5b2o 13bo7b2o31bobo5bo3bo12bo2bo26bo9b2o9bob3o\$34bo2b2o3bo19b2o5bo34bo6bobo 3b2o9b2o27b2o13b2o5b3o\$37b2o3bo20b3ob2o5b2o36bo4b2o37bobo13bo3bo\$33bo 2bo5bo29b2ob2o\$33bo7bo30b4o52bo2bo50b2o\$32bob3o3b2o16b2o13b2o57bo48b4o \$32b2o24bobo19b2o46bo3bo48b2ob2o\$58bo20b4o29b4o13b4o33b2o15b2o\$38b2o 39b2ob2o14b2o11bo3bo48b2ob2o\$34b2o3b2o40b2o14b4o14bo48b4o\$34b3o36b2o 22b2ob2o9bo2bo50b2o\$35b3o35bobo23b2o\$29b2o42bo\$27b2ob2o63bo\$15b3o5bo3b 4o62bo\$12bo2b3o3b2obo3b2o19bo2bo36bo3bo2b2o\$12bobo6bo3bo27bo31bo2b3obo 5bo\$12bo2b3o3b2obo3b2o19bo3bo30bob5o2bobo2b2o\$15b3o5bo3b4o19b4o29b2ob 2o5bo3b2o\$27b2ob2o52bo2bo7b3o\$29b2o5b2o5b4o\$b3o5b3o22b2ob2o3bo3bo38b2o \$5o6bo22b4o8bo51b2o\$3ob2o4bo24b2o5bo2bo43b4o4b4o\$3b2o83bo3bo4b2ob2o\$ 33bo58bo6b2o\$14b3o15b2o8b2o44bo2bo\$16bo14bo9bo2bo\$15bo16b5o4bo2bo\$33b 4o3b2ob2o\$36bo4b2o\$19b3o\$21bo\$20bo\$43b4o\$25bo2bo13bo3bo\$29bo16bo\$25bo 3bo12bo2bo\$26b4o! #C [[ GRID THEME BOOK ]]```
Figure 6.22: primer

A prime-generating pattern. The stream of lightweight spaceships that escapes to the left has spacing determined by the prime numbers (i.e., only the 2nd, 3rd, 5th, 7th, 11th, ... lightweight spaceships escape).

RLE code: Select all
```x = 951, y = 696, rule = B3/S23 196bo13bo\$195b3o11b3o\$195bob2o4bo5bob2o14bo13bo\$196b3o3b3o5b3o13b3o11b 3o\$196b2o3b2obo5b2o13b2obo5bo4b2obo\$225b3o5b3o3b3o\$226b2o5bob2o3b2o2\$ 201bo\$201b3o5b3o\$202bo5bo2bo24bo\$202bo2bo5bo14b3o5b3o\$203b3o5bo14bo2bo 5bo\$208bobo15bo5bo2bo\$226bo5b3o\$227bobo2\$194bo\$193b3o\$192b2obo47bo\$ 192b3o47b3o\$193b2o47bob2o\$209bo5bo27b3o\$197bobo8b3o3b3o26b2o\$197b2o8b 2obo3bob2o4bo5bo\$199b3o5b3o5b3o3b3o3b3o8bobo\$208b2o5b2o3b2obo3bob2o8b 2o\$220b3o5b3o5b3o\$212bo8b2o5b2o\$211b3o\$203b2o20bo\$204b2o5bobo10b3o\$ 177b3o11b3o9bo8bo20b2o\$176bo2bo10bo2bo30bobo5b2o\$179bo4b3o6bo31bo8bo9b 3o11b3o\$179bo4bo2bo5bo50bo2bo10bo2bo\$176bobo4bo3bo2bobo14b2obo2b3o28bo 6b3o4bo\$183b4o20bo5bo30bo5bo2bo4bo\$184bo23bo13b3o2bob2o14bobo2bo3bo4bo bo\$213bo10bo5bo20b4o\$178bo33bo16bo23bo\$177b3o44bo\$176b2obo45bo33bo\$ 176b3o79b3o\$177b2o79bob2o\$259b3o\$187b2o16bo53b2o\$187b2o15b3o\$204bob2o 24bo16b2o\$205b3o2b2o19b3o15b2o\$184b3o6b3o9b3obob2o17b2obo\$158bo13bo10b o3bo4bo2bo9b2o2bo3bo12b2o2b3o\$157b3o11b3o8bo5bo6bo14b3o12b2obob3o9b3o 6b3o\$156b2obo5bo4b2obo13bo7bo15bo12bo3bo2b2o9bo2bo4bo3bo\$156b3o5b3o3b 3o10b4o5bobo30b3o14bo6bo5bo\$157b2o4bo2b2o3b2o40bo12bo15bo7bo\$163b2ob2o 45bo29bobo5b4o9b3o11b3o\$162b3o2bo30b3o3b3o6bo10bo38bo2bo10bo2bo\$163b2o bo31bo2bobo2bo17bo41bo4b3o6bo\$164bo33bo7bo17bo6b3o3b3o26bo4bo2bo5bo\$ 164bo3bo2b3o24bo7bo24bo2bobo2bo23bobo4bo3bo2bobo\$165bobo3bo2bo24bobobo bo25bo7bo30b4o\$166bo4bo59bo7bo31bo\$171bo20bo9bo29bobobobo\$172bobo18b2o 6b3o61bo\$192b2o6b2ob2o30bo9bo18b3o\$201b3o30b3o6b2o18b2obo\$173b3o3b3o 19b3o29b2ob2o6b2o17b3o\$156bo15bo2bo3bo2bo18b3o30b3o27b2o\$155b3o4b2o11b o3bo21bobo30b3o\$155bob2o16bo3bo21bobo30b3o37b2o\$156b3o13bobo5bobo19bo 31bobo20bo5bo10b2o\$156b2o76bobo19b3o3b3o\$161b2o13b3o56bo19b2obo3bob2o 14b3o\$160b3o13b3o76b3o5b3o5b3o6bo2bo\$161bo2bo11b3o77b2o5b2o5bo3bo5bo\$ 162b2o105bo5bo4bo\$260bo13bo6bobo\$176b3o18bo3b3o8b2o45b3o8b4o\$176b3o6bo 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9b3ob2o9b3ob2o113bo26bo3bo28b2ob2o\$342b5o13b2o10b5o13b2o10b5o13b2o10b 5o13b2o10b5o13b2o10b5o13b2o10b5o13b2o10b5o13b2o110bo2b2o30bo14b4o10b4o \$343b3o27b3o27b3o27b3o27b3o27b3o27b3o27b3o127b3o23bo3bo2bo14bo3bo11b2o \$684bo23b2o25bo\$708bobo20bo2bo63bo2bo\$802bo6b2o\$729b2o67bo3bo4b2ob2o\$ 685b2o41b5o66b4o4b4o\$684b4o33bob3o2bo4bo74b2o\$684b2ob2o30b2o3bo3b3o2bo \$686b2o31bobo7bo2b2o\$666b2o51bob2o7b2o57bobo12b4o\$665bobo27b2o23b2o65b 3ob2o11bo2b2o\$667bo26b4o23bo65b3ob3o11bo2b2o\$682bo11b2ob2o89b2ob2o12bo 2bo\$680b2obo3bo2bo5b2o27b2o5b4o53b3o3b2o9b2o\$678b5o4bo3bo31b2ob2o3bo3b o54bo4b2o\$678bo2bo4bo4b2o30b4o8bo\$678b5o4bo3bo32b2o5bo2bo\$680b2obo3bo 2bo5b2o111b2o\$682bo11b2ob2o3b2o5bo2bo64bo29b2ob2o\$676b2o16b4o3b4o8bo 63bobo11b2o14b4o\$663b4o8bobo17b2o4b2ob2o3bo3bo63b2o10b2ob2o14b2o\$662b 6o9bo25b2o5b4o75b4o\$662b4ob2o121b2o\$666b2o31bo62bo19b2o\$681b2o15b2o62b obo16b4o\$680bobo14bob2o7b2o52b2o5bo11b2ob2o\$682bo14bobo7bo2b2o55b2obo 3bo2bo5b2o\$697b2o3bo3b3o2bo53b5o4bo3bo\$699bob3o2bo4bo53bo2bo4bo4b2o\$ 686b2o18b5o54b5o4bo3bo\$685bobo19b2o58b2obo3bo2bo5b2o\$687bo81bo11b2ob2o \$709bo2bo68b4o\$713bo68b2o\$709bo3bo54bo2bo\$693b4o13b4o58bo\$692bo3bo71bo 3bo\$696bo72b4o\$692bo2bo21bo\$717bobo\$717b2o2\$113b2o28b2o28b2o28b2o28b2o 28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o 28b2o\$113b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b 2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o29b3o\$714bo\$715bo51bo2bo\$771bo\$ 767bo3bo\$768b4o3\$666b2o114b2o\$664b2ob2o13b2o83bo12b2ob2o\$664b4o13b4o 82bo8bo3b4o\$665b2o14b2ob2o85b2o2bobo3b2o\$683b2o77b2o6bo2b2o3bo\$771b2o 2bobo3b2o\$657bo21bo87bo8bo3b4o\$658b2o17bo81b3o5bo12b2ob2o\$657b2o14bo3b o2b2o77bo22b2o\$669bo2b3obo5bo77bo\$668bob5o2bobo2b2o\$652bo14b2ob2o5bo3b 2o107b2o\$640bo12b2o13bo2bo7b3o92b3o11b2ob2o\$638bo3bo9b2o120bo13b4o16b 2o\$643bo25b2o104bo13b2o15b2ob2o\$638bo4bo38b2o8b2o5bo2bo103b4o\$639b5o3b o25b4o4b4o6b4o8bo103b2o\$648b2o15bo2bo3bo3bo4b2ob2o5b2ob2o3bo3bo84bo\$ 647b2o20bo6bo6b2o8b2o5b4o83b3o3b2o\$652b2o11bo3bo2bo2bo110b5ob3o9b3o\$ 654bo11b4o120b3o9bo3b2o\$649bo7b2o2b3o19bo106b3o9bobo2b2o\$648bo8b2o2b3o 17bo2bo13b2o91bo9bo5bo\$649bo7b2o2b3o17bo3bo11b2ob2o88bo11bo2b2o\$654bo 11b4o11bo3bo12bo2bo100bo\$652b2o11bo3bo11bo3bo12bo2bo102bo\$637bo31bo12b obo3b2o9b2o96bo2bo\$638b2o25bo2bo14bo4b2o111bo6b2o\$637b2o158bo3bo4b2ob 2o\$699bo2bo95b4o4b4o\$703bo103b2o\$670bobo8bo2bo14bo3bo\$670b2o13bo14b4o\$ 671bo9bo3bo\$682b4o3\$656b2o16b4o\$673bo3bo\$657b2o10bo7bo\$656bobo5b7o2bo 2bo\$622bo32bo3bo3bo2b3ob2o\$623b2o29bo3bo5b7o2bo2bo\$622b2o29bo15bo7bo\$ 652b2ob2o16bo3bo\$674b4o\$625bobo\$446bo2bo56bo2bo56bo2bo55b2o27bo7b2o\$ 445bo59bo59bo60bo26bo7b4o\$445bo3bo55bo3bo55bo3bo84bo6b2ob2o\$445b4o56b 4o56b4o94b2o\$621b2o\$621bobo\$621bo48b4o\$669bo3bo\$673bo\$669bo2bo\$683b2o\$ 682b4o\$672bo9b2ob2o\$672bo11b2o\$668bo2b2o4bobo\$668bo7bo2b2o\$668bo2b2o4b obo\$672bo11b2o\$672bo9b2ob2o\$622b2o42b2o14b4o\$613b4o4b4o41bobo14b2o\$ 612bo3bo4b2ob2o40bo24b2o\$616bo6b2o65b4o\$612bo2bo74b2ob2o14b2o\$681b2o9b 2o14b4o\$681bobo24b2ob2o\$604b3o13b2o59bo28b2o\$603b4o13bobo\$603bo3bo12bo b2o\$604b3o14b2o75b2o\$604b3o3b2o9bo75bo2bo\$610b2o80b3o13b2o\$691bo2bo8bo 5b2o\$622b2o67b2ob2o3bo3bo4b2o\$593bo27b4o74bo4bo3bo\$592bo11b2o15b2ob2o 75bo\$592b3o8b4o16b2o\$603b2ob2o101b2o\$605b2o93b4o4b4o\$699bo3bo4b2ob2o\$ 578bo124bo6b2o\$578bo18b2o100bo2bo\$579bo15b2ob2o\$591bo3b4o\$579b2o5b2o2b obo3b2o\$578b3o4bo2b2o3bo\$576bob3o5b2o2bobo3b2o\$575bob2o12bo3b4o\$575bo 2bo16b2ob2o\$548bo26bo21b2o\$547bo30bo\$547b3o25bo\$575bobo5b4o\$576bo5bo3b o\$586bo\$2b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b2o28b 2o28b2o28b2o28b2o28b2o28b2o68bo2bo\$3bo29bo29bo29bo29bo29bo29bo29bo29bo 29bo29bo29bo29bo29bo29bo29bo29bo29bo\$3o27b3o27b3o27b3o27b3o27b3o27b3o 27b3o27b3o27b3o27b3o27b3o27b3o27b3o27b3o27b3o27b3o27b3o\$o29bo29bo29bo 29bo29bo29bo29bo29bo29bo29bo29bo29bo29bo29bo29bo29bo29bo\$546bo\$545b2o 45b2o\$545bobo42b2ob2o\$590b4o\$591b2o2\$603b4o\$602bo3bo\$598bo7bo\$593b7o2b o2bo\$592bo2b3ob2o\$593b7o2bo2bo\$598bo7bo\$602bo3bo\$603b4o\$591bo\$590b2o\$ 590bobo18b4o\$610bo3bo\$614bo14b4o\$606bo3bo2bo14bo3bo\$605b2o25bo\$605bobo 20bo2bo2\$626b2o\$625b5o\$618bob3o2bo4bo\$616b2o3bo3b3o2bo\$616bobo7bo2b2o\$ 616bob2o7b2o\$617b2o\$618bo2\$622b2o5b4o\$620b2ob2o3bo3bo\$620b4o8bo\$621b2o 5bo2bo! #C [[ GRID THEME BOOK ]]```
Figure 6.23: twin bees reflect

Numerous ways of reflecting gliders and lightweight spaceships with a twin bees shuttle.

RLE code: Select all
```x = 242, y = 83, rule = B3/S23 10bo\$11bo\$9b3o4\$10b3o3bo63b3o3bo63b3o3bo63b3o3bo\$3b2o3b5o2bobo12b2o41b 2o3b5o2bobo12b2o41b2o3b5o2bobo12b2o41b2o3b5o2bobo12b2o\$3b2o2b2o3b2o3bo 12b2o41b2o2b2o3b2o3bo12b2o41b2o2b2o3b2o3bo12b2o41b2o2b2o3b2o3bo12b2o\$ 8b2o3bo2bo61b2o3bo2bo61b2o3bo2bo61b2o3bo2bo\$9bo3b3o63bo3b3o63bo3b3o63b o3b3o\$72bo\$9bo3b3o54bobo6bo3b3o63bo3b3o63bo3b3o\$8b2o3bo2bo54b2o5b2o3bo 2bo61b2o3bo2bo61b2o3bo2bo\$7b2o3b2o3bo12b2o45b2o3b2o3bo12b2o45b2o3b2o3b o12b2o45b2o3b2o3bo12b2o\$8b5o2bobo12b2o46b5o2bobo12b2o46b5o2bobo12b2o 46b5o2bobo12b2o\$10b3o3bo63b3o3bo63b3o3bo63b3o3bo7\$135bo\$135b2o72b2o\$ 134bobo71bobo\$210bo30\$10b3o3bo63b3o3bo63b3o3bo\$3b2o3b5o2bobo12b2o41b2o 3b5o2bobo12b2o41b2o3b5o2bobo12b2o\$3b2o2b2o3b2o3bo12b2o41b2o2b2o3b2o3bo 12b2o32bo8b2o2b2o3b2o3bo12b2o\$8b2o3bo2bo61b2o3bo2bo48bo12b2o3bo2bo\$9bo 3b3o63bo3b3o47b3o13bo3b3o2\$9bo3b3o45b2o16bo3b3o63bo3b3o\$8b2o3bo2bo42b 2ob2o14b2o3bo2bo61b2o3bo2bo\$7b2o3b2o3bo12b2o27b4o14b2o3b2o3bo12b2o45b 2o3b2o3bo12b2o\$8b5o2bobo12b2o28b2o16b5o2bobo12b2o46b5o2bobo12b2o\$10b3o 3bo63b3o3bo63b3o3bo12\$b3o\$o2bo\$3bo\$3bo\$obo! #C [[ GRID THEME BOOK ]]```
Figure 6.24(a): twin bees p23 gun

A period 23 glider gun based on a reflection involving the twin bees shuttle.

RLE code: Select all
```x = 73, y = 49, rule = B3/S23 32bo\$28b2o2bo\$27bo5bo13b2o\$17b2o7b2o2bobo14b2o\$16b5o6b2o3bo\$2o14bo4bo 6b3o\$2o14b3o2bo\$17bo2b2o6b3o\$18b2o7b2o3bo\$26b2o2bobo14b2o\$18b2o7bo5bo 13b2o\$17bo2b2o6b2o2bo\$2o14b3o2bo10bo\$2o14bo4bo\$16b5o\$17b2o42bo\$44b2o 15b2o8b2o\$35bo8b2o16b2o7b2o\$36bo20b2o2b2o\$34b3o\$48bo\$46b5o\$45bo2bob2o 5b2o2b2o\$44bo7bo9b2o7b2o\$45bo2bob2o9b2o8b2o\$46b5o10bo\$48bo3\$39b2o6bo\$ 38bobo4bobo\$40bo5b2o4\$23bo27bobo\$18bo3bo29b2o\$3b2o12bo8b2o24bo\$3b2o12b o2b2o\$18b2o8bo\$19b3o3bo2bo4bo2b2o12b2o6bo\$27b2o5b2obo12b2o7bo\$19b3o3bo 3bo6bo20b3o\$18b2o9bo4b3o\$3b2o12bo2b2o\$3b2o12bo11bo4b3o\$18bo3bo6bo6bo 26bo\$23bo2b2o6b2obo12b2o12b2o\$27b2o4bo2b2o12b2o11b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.24(b): twin bees p46 lwss gun

A period 46 lightweight spaceship gun.

RLE code: Select all
```x = 51, y = 45, rule = B3/S23 7bob2o\$b2o3bo2b2o2b3o\$b2o3bo6b2o\$6b2o3b3o22bobo2b2o\$8bo3bo22bo3bob3o4b 2o\$36bo6b2o3b2o\$8bo3bo24b5obo\$6b2o3b3o26b3o\$b2o3bo6b2o\$b2o3bo2b2o2b3o 24b3o\$7bob2o26b5obo\$19bo16bo6b2o3b2o\$18bo16bo3bob3o4b2o\$18b3o15bobo2b 2o3\$b2o44b2o\$b2o22b2o19b4o\$23b2ob2o18b2ob2o\$23b4o21b2o\$2bo5bo15b2o\$b3o 3b3o\$bob2ob2obo\$2o7b2o\$2o7b2o\$3o5b3o\$2b3ob3o\$4bobo\$bo2bobo2bo\$o2bo3bo 2bo\$b2o5b2o13\$b2o5b2o\$b2o5b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.24(c): twin bees lwss to mwss

A reaction in which two twin bees convert an LWSS into an MWSS.

RLE code: Select all
```x = 50, y = 44, rule = B3/S23 11b3o\$10bo2bo\$13bo\$9bo3bo\$13bo\$10bobo\$36b2o3bo\$21b2o13b3obob2o4b2o\$21b 2o13b3o4bo4b2o\$39bo3bo\$40b3o2\$22b2o16b3o\$b4o12b3o2b2o15bo3bo\$o3bo11bo 3bo15b3o4bo4b2o\$4bo11bo4bo14b3obob2o4b2o\$o2bo17bo14b2o3bo\$16bobo2bo\$ 15b2ob2o\$16b2o10\$17bo7bo\$17b2o5b2o\$17b3o3b3o\$19b2ob2o\$19bo3bo\$16b2o7b 2o\$16b2o7b2o\$20bobo\$16bo2bo3bo2bo\$17b3o3b3o4\$17b2o5b2o\$17b2o5b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.25: twin bees duplicate reflector

A way of using two twin bees shuttles to reflect and duplicate a glider.

RLE code: Select all
```x = 50, y = 26, rule = B3/S23 17bobo\$18b2o\$18bo4\$32bo\$31b2o15b2o\$30b2o16b2o\$31b2o2b2o2\$45bo\$43b5o\$ 31b2o2b2o5b2obo2bo\$17bo12b2o9bo7bo\$2o15b2o12b2o9b2obo2bo\$2o16b2o12bo 10b5o\$13b2o2b2o26bo2\$4bo\$2b5o\$bo2bob2o5b2o2b2o\$o7bo9b2o\$bo2bob2o9b2o\$ 2b5o10bo\$4bo! #C [[ GRID THEME BOOK ]]```
Figure 6.26: ticker tape gun

A "ticker tape" gun that uses a glider duplicator to read a sequence of gliders in a loop and output a stream of lightweight spaceships with the same spacing.

RLE code: Select all
```x = 425, y = 174, rule = B3/S23 385b2o14b3o8b2o\$385b2o12bo3bo8b2o\$398bo4bo\$398bo3bo2\$388b3o7bo3bo\$386b 2obob2o5bo4bo\$386b2o5bo5bo3bo\$386b2obob2o8b3o\$388b3o3\$422b2o\$421bo2bo\$ 416bo7bo\$415bobo3bo2bo\$414b2ob2ob2ob2o\$418bobo\$417b2ob2o5\$415b3o3b3o\$ 414bo9bo\$414bo3bobo3bo\$415b3o3b3o\$416bo5bo10\$404b2o\$405b2o\$404bo10b2o\$ 415b2o\$362bo\$361bo\$361b3o5\$393bo\$393b2o\$392bobo3\$350bo\$350bobo\$350b2o 5\$381b2o\$382b2o\$381bo2\$339bo\$338bo\$338b3o5\$370bo\$370b2o\$369bobo10\$358b 2o\$359b2o\$358bo3\$283b2o\$283b2o9\$277bo5bo\$276b3o3b3o19bo\$276bob2ob2obo 19bobo\$278b2ob2o21b2o\$278b2ob2o\$278b2ob2o8\$277bo\$275bobo11b5o\$275b5o 11bobo\$291bo8\$286b2ob2o\$286b2ob2o\$286b2ob2o\$284bob2ob2obo\$284b3o3b3o\$ 285bo5bo6\$303b2o\$303b2o2\$291b2o\$291b2o8\$362b2o\$355b3o4b2o\$303b2o5b2o\$ 302bo2bo3bo2bo41bo3bo\$305b2ob2o44bo3bo\$304bobobobo44bobo\$304bobobobo 44b3o\$302bo9bo\$301bo11bo2\$305b2ob2o\$303bo2bobo2bo\$303b3o3b3o43bo7bo\$ 353bob2o5b2obo\$353bo3b2ob2o3bo\$310b2o42bo3bobo3bo\$310b2o43b3o3b3o4\$bo 2bo88bo2bo134bo2bo42bo2bo42bo2bo\$o68b4o19bo22b4o111bo22b4o19bo22b4o19b o\$o3bo64bo3bo18bo3bo18bo3bo110bo3bo18bo3bo18bo3bo18bo3bo18bo3bo\$4o65bo 22b4o19bo114b4o19bo22b4o19bo22b4o\$70bo2bo42bo2bo134bo2bo42bo2bo3\$362b 2o\$362b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.27: ticker tape hi gun

A "ticker tape" gun that prints out "HI!"

RLE code: Select all
```x = 954, y = 465, rule = B3/S23 658b2o\$657b5o\$641b2o14bo4bo5b2o\$641b2o14b3o2bo5b2o\$658bo2b2o\$659b2o\$ 643bo3bo\$641b2obobob2o9b2o\$640bob2o3b2obo7bo2b2o\$639bo2bo5bo2bo5b3o2bo \$640bob2o3b2obo6bo4bo\$641b2obobob2o7b5o\$643bo3bo10b2o2\$678b2o\$678b2o\$ 671b3o\$670bo3bo\$670b2ob2o2\$670b2ob2o55b2o14b3o8b2o\$672bo57b2o12bo3bo8b 2o\$743bo4bo\$743bo3bo2\$671bo7bo53b3o7bo3bo\$670bo2bo3bo2bo50b2obob2o5bo 4bo\$674bobo54b2o5bo5bo3bo\$674bobo54b2obob2o8b3o\$674bobo56b3o\$670bo2bo 3bo2bo\$671b3o3b3o\$767b2o\$766bo2bo\$761bo7bo\$760bobo3bo2bo\$759b2ob2ob2ob 2o\$662bo100bobo67bo3bo\$662b2o66bo31b2ob2o54b2o9bo5bo9b2o\$661bobo65bo 91b2o15bo9b2o\$729b3o101bo3b2o\$671b2o161b3o\$671b2o\$760b3o3b3o55b2obo6b 3o\$759bo9bo53bobobo5bo3b2o\$759bo3bobo3bo53bo4bo9bo\$760b3o3b3o54bobobo 4bo5bo\$761bo5bo56b2obo5bo3bo2\$650b2o\$651b2o65bo139b2o\$650bo67bobo137b 2o\$718b2o\$852bo5bo\$851b3o3b3o\$851bo2bobo2bo\$605bo215bo31b2ob2o56b2o14b 3o8b2o\$604bo144b2o70bobo90b2o12bo3bo8b2o\$604b3o143b2o69b2o104bo4bo\$ 749bo10b2o165bo3bo\$760b2o89bo7bo\$852bobobobo58b3o7bo3bo\$852bobobobo56b 2obob2o5bo4bo\$851bob2ob2obo55b2o5bo5bo3bo\$851b2o5b2o55b2obob2o8b3o\$ 917b3o2\$810bo\$593bo144bo70bo141b2o\$593bobo142b2o69b3o115bo22bo2bo\$593b 2o142bobo186b2o17bo7bo\$926bobo15bobo3bo2bo\$943b2ob2ob2ob2o\$947bobo\$ 914bo31b2ob2o\$913bo\$913b3o\$851b2o\$851b2o\$944b3o3b3o\$943bo9bo\$943bo3bob o3bo\$944b3o3b3o\$616bo328bo5bo\$616b2o\$615bobo2\$828b2o\$829b2o\$828bo\$539b 2o\$539b2o29bo144bo\$570bobo142b2o\$570b2o142bobo2\$604b2o338b2o\$605b2o 337b2o\$533bo5bo64bo\$532b3o3b3o276bo\$531b2o2bobo2b2o275b2o\$531bo3bobo3b o274bobo\$531bob2o3b2obo\$531b2o7b2o17bo215bo\$558bo144b2o70bobo\$558b3o 143b2o69b2o\$703bo3\$628b2o\$628b2o4\$764bo\$532bo19bo139bo70bo\$531bobo19b 2o137b2o69b3o\$531bo20b2o137bobo216b2o\$532bo16bo361b2o\$547bobo31b2o39bo 5bo281bo\$548b2o32b2o37b3o3b3o19bo\$581bo39bob2ob2obo19bobo216bo\$623b2ob 2o21b2o216bo\$623b2ob2o239b3o\$623b2ob2o3\$563bobo114b2o37b2o\$539b2o7b2o 14b2o115b2o36b2o178bo\$539bob2o3b2obo10bo3bo115bo218b2o\$539bo3bobo3bo 11bo8bo327bobo\$539b2o2bobo2b2o9b3o8b2o\$540b3o3b3o20bobo50bo16bobo\$541b o5bo72bobo11bo5b2o214bo\$620b5o11bo3bo215bobo\$637bo218b2o\$559b2o74b3o\$ 559b2o\$575bo93bo43bo5bo\$547b2o27b2o91b2o41b3o3b3o\$547b2o26b2o91bobo40b 2o2bobo2b2o\$710bob4ob4obo\$712b3o3b3o\$631b2ob2o75b3o5b3o\$631b2ob2o209bo \$631b2ob2o135bo40b2o30bo\$629bob2ob2obo133b2o39b2o30b3o\$629b3o3b3o132bo bo\$560bo5bo45bo5b2o10bo5bo79b2ob2o\$559b3o3b3o43b3o4b2o92b2obo8bo\$558b 2ob2ob2ob2o17bobo21b2ob2o42b2o52b3obo9bo2bo\$557b3o7b3o17b2o69b2o51b2o 12bo\$587bo21bobobobo41bo57bo12b2o\$559bo7bo144bo2bo9bob3o\$610b2ob2o33b 2o66bo8bob2o\$610b2ob2o33b2o12bobo55b2ob2o81bo5bo\$612bo50b2o140b3o3b3o 19bo\$636b2o25bo95b2o44bob2ob2obo19bobo\$560bo75b2o122b2o45b2ob2o21b2o\$ 559b3o197bo47b2ob2o\$558bo2bo157b3o5b3o77b2ob2o\$558bobobo157b3o3b3o\$ 559b3o156bob4ob4obo\$560bo5b2o151b2o2bobo2b2o\$566b2o152b3o3b3o\$610b2obo 3bob2o100bo5bo\$610bo2bo3bo2bo53bo32b2o\$611b3o3b3o55b2o23b3o4b2o\$bo2bo 88bo2bo88bo2bo42bo2bo42bo2bo42bo2bo180bo2bo88bo2bo45b2o5b2o17b2o130bo 16bobo\$o22b4o65bo22b4o42b4o19bo22b4o19bo22b4o19bo45bo22b4o134b4o19bo 68b4o19bo48bo2bo3bo2bo41bo3bo42bo57bobo11bo5b2o\$o3bo18bo3bo64bo3bo18bo 3bo41bo3bo18bo3bo18bo3bo18bo3bo18bo3bo18bo3bo41bo3bo18bo3bo133bo3bo18b o3bo64bo3bo18bo3bo47b2ob2o44bo3bo42bo57b5o11bo3bo\$4o19bo68b4o19bo45bo 22b4o19bo22b4o19bo22b4o42b4o19bo137bo22b4o65bo22b4o47bobobobo44bobo 118bo\$24bo2bo88bo2bo42bo2bo42bo2bo42bo2bo88bo2bo134bo2bo88bo2bo69bobob obo44b3o36b2o78b3o\$647bo9bo81b2o2b2o3b2o\$646bo11bo\$618b2o107b2o\$618b2o 30b2ob2o72b2o\$648bo2bobo2bo\$648b3o3b3o28bobo12bo7bo\$686b2o10bob2o5b2ob o32b2o3b2o65b2ob2o15bo\$686bo11bo3b2ob2o3bo104b2ob2o16b2o\$655b2o42bo3bo bo3bo105b2ob2o15b2o\$655b2o43b3o3b3o37bo66bob2ob2obo10bo\$746bo66b3o3b3o 8bobo\$764bobo31b2o14bo5bo10b2o\$765b2o31bo2bo\$24bo2bo88bo2bo42bo2bo42bo 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2o70bobo\$531b2o7b2o17bo215bo\$531bob2o3b2obo\$531bo3bobo3bo274bobo\$531b 2o2bobo2b2o275b2o\$532b3o3b3o276bo\$533bo5bo64bo\$605b2o337b2o\$604b2o338b 2o2\$570b2o142bobo\$570bobo142b2o\$539b2o29bo144bo\$539b2o\$828bo\$829b2o\$ 828b2o2\$615bobo\$616b2o\$616bo328bo5bo\$944b3o3b3o\$943bo3bobo3bo\$943bo9bo \$944b3o3b3o\$851b2o\$851b2o\$913b3o\$913bo\$914bo31b2ob2o\$947bobo\$943b2ob2o b2ob2o\$926bobo15bobo3bo2bo\$593b2o142bobo186b2o17bo7bo\$593bobo142b2o69b 3o115bo22bo2bo\$593bo144bo70bo141b2o\$810bo2\$917b3o\$851b2o5b2o55b2obob2o 8b3o\$851bob2ob2obo55b2o5bo5bo3bo\$852bobobobo56b2obob2o5bo4bo\$852bobobo bo58b3o7bo3bo\$760b2o89bo7bo\$749bo10b2o165bo3bo\$604b3o143b2o69b2o104bo 4bo\$604bo144b2o70bobo90b2o12bo3bo8b2o\$605bo215bo31b2ob2o56b2o14b3o8b2o \$851bo2bobo2bo\$851b3o3b3o\$852bo5bo\$718b2o\$650bo67bobo137b2o\$651b2o65bo 139b2o\$650b2o2\$761bo5bo56b2obo5bo3bo\$760b3o3b3o54bobobo4bo5bo\$759bo3bo bo3bo53bo4bo9bo\$759bo9bo53bobobo5bo3b2o\$760b3o3b3o55b2obo6b3o\$671b2o\$ 671b2o161b3o\$729b3o101bo3b2o\$661bobo65bo91b2o15bo9b2o\$662b2o66bo31b2ob 2o54b2o9bo5bo9b2o\$662bo100bobo67bo3bo\$759b2ob2ob2ob2o\$760bobo3bo2bo\$ 761bo7bo\$766bo2bo\$767b2o\$671b3o3b3o\$670bo2bo3bo2bo\$674bobo56b3o\$674bob o54b2obob2o8b3o\$674bobo54b2o5bo5bo3bo\$670bo2bo3bo2bo50b2obob2o5bo4bo\$ 671bo7bo53b3o7bo3bo2\$743bo3bo\$743bo4bo\$672bo57b2o12bo3bo8b2o\$670b2ob2o 55b2o14b3o8b2o2\$670b2ob2o\$670bo3bo\$671b3o\$678b2o\$678b2o2\$643bo3bo10b2o \$641b2obobob2o7b5o\$640bob2o3b2obo6bo4bo\$639bo2bo5bo2bo5b3o2bo\$640bob2o 3b2obo7bo2b2o\$641b2obobob2o9b2o\$643bo3bo\$659b2o\$658bo2b2o\$641b2o14b3o 2bo5b2o\$641b2o14bo4bo5b2o\$657b5o\$658b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.28: p46 memory cell

A 12-bit memory cell built out of p46 circuitry.

RLE code: Select all
```x = 295, y = 154, rule = B3/S23 253b2o\$253b2o12\$253b3o3b3o\$253b3o3b3o\$252bob2o3b2obo\$252bob2o3b2obo\$ 253b2o5b2o\$254bo5bo4\$255b2ob2o\$254bo5bo\$252b2ob2ob5o\$252b2ob2ob3ob2o\$ 254bo6b3o\$260bobo\$260b2o2\$233b2o\$232bobob2o8b2o\$231b2o3b2o9b2o\$232bobo b2o5b5o\$233b2o8b4o2\$243b4o\$243b5o\$230b2o15b2o\$230b2o14b2o5\$248bo\$246b 2o\$247b2o14bo\$263bobo\$263b2o4\$216bo\$217b2o40b3o\$216b2o41bo\$260bo\$235bo bo\$235b2o\$236bo2\$250b2o\$251bo\$248b3o\$248bo17b2o\$265bobo3b2o\$267bo3bobo \$271bo\$225bo\$191b2o30b2o\$191b2o31b2o3\$236b2o\$236bobo\$238bo\$238b2o14b3o \$256bo25b3o\$255bo15b2o9bo\$261b2o7bobo10bo\$184b3o3b3o68b2o6b2obo13b2o\$ 183bo2bo3bo2bo76b2o\$187bobo81bo\$187bobo\$187bobo81bo\$183bo2bo3bo2bo76b 2o\$184bo7bo76b2obo10bo\$243b2o25bobo9bobo\$242bobo26b2o9bobo\$244bo\$188bo 102b2o\$183bobobo15bo87b2o\$196b2o6bo\$183bob2o15b3o\$183b2o13bo\$187b2o10b 2o\$197bob2o\$196bo2\$231b3o\$233bo\$192bo7bo31bo52bo5bo\$191bo2bo3bo2bo82b 3o3b3o\$195bobo85b2o2bobo2b2o\$195bobo84bob4ob4obo\$195bobo86b3o3b3o\$191b o2bo3bo2bo81b3o5b3o\$192b3o3b3o3\$220b2o\$219bobo69bo\$221bo68bobo\$289b2ob 2o\$211b2o13bo62b2ob2o\$211b2o14bo\$225b3o62b3o\$199b2o83b2o5bo\$199b2o83b 2o5bo8\$238bo31b2o\$236bobo25bo5b2o\$211b2o5b2o17b2o24b3o\$210bo2bo3bo2bo 41bobobo\$211bo2bobo2bo42bo2bo\$214bobo46b3o\$212b3ob3o45bo\$210b3o5b3o\$ 210b2o7b2o\$210b2o7b2o\$211bob2ob2obo\$211b3o3b3o29bo13bo7bo\$212bo5bo31bo \$248b3o10b3o7b3o\$262b2ob2ob2ob2o\$218b2o43b3o3b3o\$218b2o44bo5bo4\$2b2o 44b2o44b2o44b2o44b2o44b2o\$b4o19b2o21b4o42b4o42b4o19b2o21b4o42b4o19b2o\$ 2ob2o18b2ob2o18b2ob2o41b2ob2o41b2ob2o18b2ob2o18b2ob2o41b2ob2o18b2ob2o\$ b2o21b4o19b2o44b2o44b2o21b4o19b2o44b2o21b4o\$25b2o136b2o90b2o3\$270b2o\$ 270b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.29(a): tanners p46 edge

A period 46 edge shooter based on Tanner's p46.

RLE code: Select all
```x = 43, y = 37, rule = B3/S23 6bo\$6b3o\$9bo\$8b2o\$2b2o\$3bo\$2bo\$2b2o2\$2b2o13b2o\$2bobo3bo8b2o\$3bo3b3o\$3o 4bobo8bo\$o17bo\$19bo\$18bobo4\$30bo\$10b2o6bobo7bobo\$6b2o2b2o7bo9b2o\$5bobo \$5bo\$4b2o\$17b3o8b2o\$17bobo8b2o\$10b2o5bobo\$9bobo\$9bo19b2o\$8b2o19bo11bo\$ 30b3o9bo\$18bo13bo7b3o\$12b2obobobo\$12bob2ob2obo\$20bo\$20b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.29(b): tanners p46 inline inverter

A period 46 inline inverter.

RLE code: Select all
```x = 43, y = 41, rule = B3/S23 9bobo\$10b2o\$10bo2\$6bo\$6b3o\$9bo\$8b2o\$5bo\$3b3o\$2bo\$2b2o2\$2b2o13b2o\$2bobo 3bo8b2o\$3bo3b3o\$3o4bobo8bo\$o17bo\$19bo\$18bobo4\$30bo\$10b2o6bobo7bobo\$6b 2o2b2o7bo9b2o\$5bobo\$5bo\$4b2o\$17b3o8b2o\$17bobo8b2o\$10b2o5bobo\$9bobo\$9bo 19b2o\$8b2o19bo11bo\$30b3o9bo\$18bo13bo7b3o\$12b2obobobo\$12bob2ob2obo\$20bo \$20b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.29(c): tanners p46 mwss gun

A period 46 MWSS gun based on Tanner's p46.

RLE code: Select all
```x = 40, y = 29, rule = B3/S23 6bo\$6b3o\$9bo\$8b2o\$2b2o\$3bo6b3o\$2bo7bo2bo\$2b2o5bo2b2o\$9b2o3b2o\$2b2o9bo 2bo14b2o\$2bobo8bo2bo11b3ob2o\$3bo9bo2bo11b5o\$3o6b2o3b2o13b3o\$o8bo2b2o\$ 10bo2bo\$10b3o2\$24b3o8b2o\$24bobo8b2o\$17b2o5bobo\$10b2o4bobo\$6b2o2b2o4bo 19b2o\$5bobo7b2o19bo\$5bo31b3o\$4b2o19bo13bo\$19b2obobobo\$19bob2ob2obo\$27b o\$27b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.30: p46 hwss gun

A p46 HWSS gun.

RLE code: Select all
```x = 150, y = 72, rule = B3/S23 62b2o\$63bo\$63bob2ob2obo\$64bobobob2o\$51bo13bo\$51b3o4b2o\$54bo3bo2bo12b2o \$53b2o7bo11bo\$45bo16b2o8bobo\$45b3o10bo4b2o7b2o\$48bo5b2o\$47b2o5b2o4b2o 4bo\$41b2o\$42bo39bo\$41bo38b3o\$41b2o36bo\$79b2o\$41b2o3b3o8b2o4b4o18b2o\$ 41bob3o3bo5bo4bo2b4o18bo\$42bob3ob2o5bo4bo3bo21bo\$39b3o13bo4bo24b2o\$39b o17b2o\$69bob2obo3bo6b2o\$69bo3b2o3bo5bobo\$69bo7bo7bo\$72b2ob2o3bo5b3o\$ 72bo3b2o2bobo5bo\$57bo15b3o2bobo2bo\$49b2o4b2o17b2o3bo3b2o\$45b2o2b2o5b2o 4bo13bobo3bo\$44bobo13b2o7bo6b2o\$44bo16b2o5b3o\$43b2o26bo\$69b2o6b2o\$77b 2o2b2o\$81bobo\$83bo\$83b2o\$59b2o\$44bobo12b2o7bo\$44b2o23bo7b2o\$45bo3bobo 14bo2bo7bobo\$49b2o7b2o4b5o10bo\$50bo8bo3bobob2o10b2o\$56b3o4bobo\$56bo13b o\$69bobobob2o\$68bob2ob2obo\$68bo\$67b2o\$34bo\$32b2o\$33b2o4bo13b2o44b2o44b 2o\$37b2o12bo4bo40bo4bo40bo4bo\$38b2o17bo17b6o22bo17b6o22bo\$31b3o17bo5bo 16bo5bo16bo5bo16bo5bo16bo5bo\$bo2bo28bo18b6o22bo17b6o22bo17b6o\$4bo7b3o 17bo41bo4bo40bo4bo\$o9bo4bo60b2o44b2o\$2o8bo5bo18bo\$6bo8bo18b2o\$3b2o8b2o 18b3obo9b2o\$32b2o13b2o\$3b2o8b2o18b2o\$6bo8bo18bo\$2o8bo5bo\$o9bo4bo18bo\$ 4bo7b3o18b2o\$bo2bo27b2o13b2o\$33b3obo9b2o\$34b2o\$35bo! #C [[ GRID THEME BOOK ]]```
Figure 6.31: p46 natural heisenburp

A small period 92 glider heisenburp that was found by Brice Due in January 2005.

RLE code: Select all
```x = 39, y = 38, rule = B3/S23 29b2o5b2o\$29b2o5b2o15\$29bo7bo\$28b4o3b4o\$15bo12bo3bobo3bo\$13bobo13bo2bo bo2bo\$14b2o13b3o3b3o7\$17bo11b2o\$2o15b2o10b2o\$2o16b2o\$13b2o2b2o4\$13b2o 2b2o\$2o16b2o\$2o15b2o\$17bo! #C [[ GRID THEME BOOK ]]```
Figure 6.32: MWSS out of the blue

A configuration of two twin bees shuttles that detects the presence of an LWSS and creates an MWSS traveling in the opposite direction in response.

RLE code: Select all
```x = 41, y = 37, rule = B3/S23 9b2o5b2o\$9b2o5b2o12\$11b2ob2o\$11b2ob2o\$11b2ob2o\$9bob2ob2obo\$9b3o3b3o\$ 10bo5bo6\$25bo\$15b2o8b2o\$14bo2bo5bob3o11b2o\$13b3ob2o8b2o10b2o\$14bob2o8b 2o\$15bo10bo2\$26bo\$b3o22b2o\$o2bo8b2o13b2o10b2o\$3bo8b2o9bob3o11b2o\$3bo 21b2o\$obo22bo! #C [[ GRID THEME BOOK ]]```
Figure 6.33(a): heisenburp reaction p35

A reaction that can be used to make Heisenburps of period 35 or greater. Found by Jason Summers.

RLE code: Select all
```x = 49, y = 14, rule = B3/S23 b3o\$3bo\$2bo2\$8b6o28b6o\$2b3o3bo5bo21b3o3bo5bo\$bo2bo3bo26bo2bo3bo\$4bo4bo 4bo23bo4bo4bo\$o3bo6b2o21bo3bo6b2o\$4bo33bo\$bobo31bobo\$8bo33bo\$7b2o32b2o \$7bobo31bobo! #C [[ GRID THEME BOOK ]]```
Figure 6.33(b): heisenburp reaction p35

A reaction that can be used to make Heisenburps of period 35 or greater. Found by Jason Summers.

RLE code: Select all
```x = 49, y = 14, rule = B3/S23 b3o\$3bo\$2bo2\$8b6o28b6o\$2b3o3bo5bo21b3o3bo5bo\$bo2bo3bo26bo2bo3bo\$4bo4bo 4bo23bo4bo4bo\$o3bo6b2o21bo3bo6b2o\$4bo33bo\$bobo31bobo\$8bo33bo\$7b2o32b2o \$7bobo31bobo! #C [[ GRID THEME BOOK ]]```
Figure 6.34: p46 heisenburp constructed

A p46 Heisenburp that can be adjusted to work at any (sufficiently large) period.

RLE code: Select all
```x = 135, y = 94, rule = B3/S23 77b2o\$77bo\$74b2obo\$71b2o3bo\$71bo\$122b2o5b2o\$69bo4bo47b2o5b2o\$69bo4bo\$ 71b4o\$69bo4bo\$68bo2b2obo48bo5bo\$68bo5bo7bo39b3o3b3o\$68b5obo5b3o38b2o2b obo2b2o\$65b2obo3bo6bo41b2ob2ob2ob2o\$64b3o2b3o6bobo43b2ob2o\$65b2o2b2o8b 2o41bobo3bobo\$47b3o5b3o63bo2bo3bo2bo\$49bo4bo3bo20b2o43bo3bo\$48bo5bo3bo 21bo40bobo5bobo\$52b2ob3ob2o18bo42bo7bo\$51bobo5bobo17b2o\$51bo9bo4b2o5b 2o\$51b2obo3bob2o4b2o5bo\$48b2o3b2o3b2o14b3o\$47bobo26bo\$47bo19b2o\$46b2o 19bo\$36b2o12b2o16b3o\$35bobo13bo4bo13bo\$37bo13bobobobo\$52b2ob2obo\$58bo\$ 58b2o\$23b3o\$25bo95bo\$24bo31b2o44b2o17bobo\$54bo4bo40bo4bo15b2o\$30b6o17b o22b6o17bo\$24b3o3bo5bo16bo5bo16bo5bo16bo5bo\$23bo2bo3bo22b6o17bo22b6o 20bo7bo\$26bo4bo4bo40bo4bo42b2o5b2o\$22bo3bo6b2o44b2o29bo14b3o3b3o\$26bo 83b2o15b2ob2o\$23bobo83bobo3bo11bo3bo\$12b2o16bo19b2o5b2o24b2o30b2o7b2o 7b2o\$11bobo15b2o19b2o5b2o24bo30bobo7b2o7b2o\$13bo15bobo43bob2ob2obo44bo bo\$75b2obobobo41bo2bo3bo2bo\$81bo13bo29b3o3b3o\$85b3o5b3o\$71b2o11bo7bo\$ 72bo11bobo5b2o\$11b2o59bobo8b3o39b2o5b2o\$12bo60b2o23b2o25b2o5b2o\$12bobo 66bo3b2o4b2o6b2o\$13b2o2b2o61b2o3b3o3b2o5bo4b2o\$3o14b2o22b2o24b2o11b2o 2bo2b2o15b2o\$2bo37b2o26bo12b3obo17bo\$bo40bo25bobo10bo3bo\$49b3o5b3o9b2o 2b2o6bo3bo\$49b3o5b3o13b2o7b3o\$24b3o23b2o5b2o21b3o24b2o\$24bo2bo24bo3bo 23b3o24bo\$7bo16bo25bo2bobo2bo14b3o5bo23bobo\$7b3o14bo3bo20bo3bobo3bo13b o2bo10bo13b2o2b2o\$10bob3ob2o6bo25bo2bobo2bo12b2o2b2o10b2o12b2o\$9bob3o 3bo7bobo22b3o3b3o12bobo2bo9bobo3bo\$9b2o3b3o46bo7bobo18b2o\$63b3o25bobo 13bo\$9b2o55bo5bo2bo3bo20bob3ob2o\$9bo38bo5bo10bobo7bo2b2o18bo2b6o\$10bo 36b3o3b3o9b2o5bo2bo3bo26bo\$9b2o35bo2b2ob2o2bo38bo6bobo7bo\$15b2o29bo3bo bo3bo8b2o6bo20bo2b2o4b2o5b3o\$16bo31bobobobo10bo10bo17bo14bo\$13b3o50bo 18b3o6bo7bo5bobo\$13bo31b2ob2o3b2ob2o7b2o28bo5bo7b2o\$25bo21bo7bo15b2o 12bobo7bo4bo\$24b3o45bo16bo19b2o\$23b2ob2o41b3o14b5o19bo\$14b2o6b2o3b2o 40bo15bo4bo18bo\$14b2o7b2ob2o60bo2b3o15b2o\$32b2o51b2obo7b2o5b2o\$32bobo 52b2o3b2o2b2o5bo\$13b2o19bo43b2o7bo16b3o\$14bo19b2o41bobo9b5o12bo\$11b3o 63bo11b5o3b2o\$11bo13bo50b2o19bo\$24bobobob2o66b3o\$23bob2ob2obo54bo13bo\$ 23bo56b2obobobo\$22b2o23b2o5b2o24bob2ob2obo\$47b2o5b2o32bo\$88b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.35(a): Bumper

A periodic reflector that can be made to work with essentially any kind of spark. Found by Tanner Jacobi in 2016.

RLE code: Select all
```x = 26, y = 22, rule = B3/S23 2bo\$obo\$b2o7\$11bo\$9bobo\$10b2o2\$12b2o\$11bo2bo4b2o\$11bobo5b2o\$12bo2\$7b2o 9b3o\$8bo9b2obo2b2o\$5b3o12b2o2b2o\$5bo14b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.35(b): p3 bumper b

A p3 bumper reflector.

RLE code: Select all
```x = 21, y = 15, rule = B3/S23 4bobo\$5b2o\$5bo2\$7b2o9b2o\$6bo2bo4bob4o\$6bobo3b3o2bobo\$7bo\$12b3o\$2b2o7bo b3obob2o\$3bo6bo4bob2obo\$3o7b2o2b3o\$o12bo3b3o\$14b3o2bo\$16bo! #C [[ GRID THEME BOOK ]]```
Figure 6.35(c): p3 bumper a

A p3 bumper reflector.

RLE code: Select all
```x = 23, y = 14, rule = B3/S23 22bo\$4bobo13b3o\$5b2o12bo\$5bo13b2o\$18b2o\$7b2o8b2o\$6bo2bo4bo3bo\$6bobo3b 3ob3o\$7bo9bo\$12b6o\$2b2o8b2obo\$3bo7b2o\$3o\$o! #C [[ GRID THEME BOOK ]]```
Figure 6.35(d): p4 bumper

A p4 bumper reflector.

RLE code: Select all
```x = 19, y = 18, rule = B3/S23 12bo\$12b2o\$11bobo2\$6bo\$4bobo\$5b2o2\$7b2o4b2o\$6bo2bo2bo2bo\$6bobo\$7bo\$13b o2bo\$2b2o9b2obo\$3bo7b3obo\$3o7bobo3b3o\$o9bo7bo\$9b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.35(e): p6 bumper

A p6 bumper reflector.

RLE code: Select all
```x = 26, y = 23, rule = B3/S23 obo\$b2o\$bo7\$9bobo\$10b2o\$10bo2\$12b2o\$11bo2bo4b2o\$11bobo3bo2bo\$12bo2\$7b 2o8b2obo\$8bo10bobo2b2o\$5b3o12bo4bo\$5bo15bo\$21bo2bo! #C [[ GRID THEME BOOK ]]```
Figure 6.35(f): p7 bumper

A p7 bumper reflector.

RLE code: Select all
```x = 26, y = 16, rule = B3/S23 11bo\$11b2o\$4bo5bobo\$5b2o\$4b2o8b2o5b2o\$14b2o5b2o2\$7b2o\$6bo2bo4b3o3b3o\$ 6bobo3bo4bobo4bo\$7bo9bobo\$11bo3bobobobo3bo\$2b2o8bo2bobobobo2bo\$3bo9b3o bobob3o\$3o12b2o3b2o\$o! #C [[ GRID THEME BOOK ]]```
Figure 6.35(g): p8 bumper

A p8 bumper reflector.

RLE code: Select all
```x = 17, y = 18, rule = B3/S23 11b3o\$13bo\$3bobo6bo\$4b2o\$4bo3\$7b2o\$6bo2bo4b2o\$6bobo3bo2bo\$7bo\$12bo2bo\$ 2b2o9bo2bo\$3bo10bobo\$3o12bo\$o\$14b2o\$14b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.35(h): p9 bumper

A p9 bumper reflector.

RLE code: Select all
```x = 22, y = 18, rule = B3/S23 12b2o\$13b2o\$3bo8bo\$4b2o\$3b2o\$14b2o\$14bobo\$16bo2b2o\$7b2o5bobobobo\$6bo2b o3bo2bobo\$6bobo3bo5bo2bo\$7bo8bo2b3o\$15b4o\$2b2o9bo5bo\$3bo9b6o\$3o\$o14b2o \$15b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.35(i): p11 bumper

A period 11 bumper reflector.

RLE code: Select all
```x = 24, y = 24, rule = B3/S23 3bo7b2o\$4bo7b2o\$2b3o6bo5\$7b2o4b2o\$6bo2bo2bo2bo\$6bobo10b2o\$7bo11bo\$12b 2obo5bo\$2b2o9bob3o2b2o\$3bo7bobo4bo\$3o6b3ob2ob2ob3o\$o7bo3bo4bobo2bo\$9bo 2bob2o4b2obo\$10bobobo2bobobobo\$11b2o2b5o2bo\$13bobo4b2o\$13bo2b4o\$12b2o 6b2o\$18bo2bo\$18b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.36(b): p6 bouncer

A p6 pipsquirter-based reflector.

RLE code: Select all
```x = 22, y = 17, rule = B3/S23 9bo\$9b2o6b2o\$8bobo7bo\$16bo\$4bo9b4o\$2bobo8bo4bo\$3b2o7bob5o\$12bo2bo3b2o\$ 2o9b2obob3o2bo\$2o2b2o8bobobob2o\$4bobob2o2b2obo2bo\$5bo7bobob2o\$11b2obob o\$2b2o8bobobo\$3bo8bo2bo\$3o10b2o\$o! #C [[ GRID THEME BOOK ]]```
Figure 6.36(c): p7 bouncer

A p7 pipsquirter-based reflector.

RLE code: Select all
```x = 21, y = 27, rule = B3/S23 9b3o\$11bo\$10bo2\$2bobo\$3b2o8b2o\$3bo8bobo\$12bo\$2o9b2obo2bo\$2o2b2o8b4o\$4b obob2o2b2o\$5bo8b4o\$11b2obo3bo\$2b2o8bobob2obo\$3bo8bo4bobo\$3o7b2obobobob 2o\$o9bo2bobobo2bo\$12bo5bo\$11b2obob2o\$14bobo\$11b2obobobo\$11bo2b4obo\$13b o5bo\$11bob6o\$10bobo3bo\$10bo2bo\$11b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.36(d): p8 bouncer

A p8 reflector that uses the figure eight.

RLE code: Select all
```x = 16, y = 20, rule = B3/S23 8b2o\$9b2o\$3bo4bo\$4bo\$2b3o3\$2o\$2o2b2o\$4bobo\$5bo2b2o2\$2b2o2bo3bo\$3bo2bo 4bo\$3o5bobobo\$o8bobobo\$10bo4bo\$11bo3bo2\$12b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.36(e): p15 bouncer

A p15 reflector.

RLE code: Select all
```x = 22, y = 18, rule = B3/S23 8b2o\$obo4bobo\$b2o6bo\$bo4\$2o\$2o2b2o4b3o4b3o\$4bobob6o2b6o\$5bo4b3o4b3o2\$ 2b2o\$3bo\$3o\$o11bo4bo\$10b2ob4ob2o\$12bo4bo! #C [[ GRID THEME BOOK ]]```
Figure 6.36(f): p5 bouncer

A p5 pipsquirter-based reflector (that does not actually use a pipsquirter).

RLE code: Select all
```x = 34, y = 34, rule = B3/S23 6bo\$4bobo\$5b2o2\$23bo\$22bobo\$11bo9bo2bo\$12b2o7bob2ob2o\$11b2o7b2o2bobo\$ 22bobo3bo2b2o\$8b2o8bob3obobob4obo\$8b2o2b2o7bo2bo4bo3bo\$12bobobo3bo4b3o 2b3o\$13bo6bo5bobo\$3b2o12bo3b2obo3b3o\$3bo2bo3b2o7b2ob2ob3o3bo\$o3b3o3b2o 8bo4bo2b3o\$4o3bo6bo5bob3o3bo\$5b3o5b2o3b2obo\$2b3o7bo6bo2bo\$bo3b3o4bo2b 4o2b2o\$b2o2bob2o\$7bobo2bo3b3o\$8b2o2bobobo2bo\$bo2b2o4b3obo3b2o\$b4ob3o4b o2bobo\$9b3obob2obo\$3b5o4bobo2bo\$3bo2b2ob2o3bobo\$bobo4bo2b3obo\$b2o6b2o 3bo\$10bo2bo\$10bobo\$11bo! #C [[ GRID THEME BOOK ]]```
Figure 6.37(a): inverter as regulator 0

A glider destroying three gliders in an inline inverter.

RLE code: Select all
```x = 55, y = 77, rule = B3/S23 49b2o\$49b2o\$19bo\$20bo\$18b3o6\$46b2obob2o2\$46bo5bo2\$47b2ob2o\$49bo3\$43b2o 6bo\$42bobo5bobo\$44bo4bo3bo\$49b5o\$48b2o3b2o\$49b5o\$50b3o\$51bo\$35b3o\$37bo \$36bo5\$28b2o\$27bobo21b2o\$29bo21b2o6\$2b2o16b3o\$2b2o18bo\$21bo5\$2b3o8b2o\$ b2ob2o6bobo\$b2ob2o8bo\$b5o\$2o3b2o3\$6bo\$5bob2o\$5bo2\$5b2obo\$3bo2bo\$3bobo 5\$4b3o\$3bo3bo\$2bo5bo\$3bo3bo\$4b3o\$4b3o4\$4b2o\$4b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.37(b): inverter as regulator 1

A glider cleanly destroying one other glider in an inline inverter.

RLE code: Select all
```x = 55, y = 77, rule = B3/S23 49b2o\$49b2o\$19bo\$20bo8bo\$18b3o6b3o\$26bo\$26b2o3\$24bo\$23bobo20b2obob2o\$ 22bo3bo\$23b3o20bo5bo\$21b2o3b2o\$5bo41b2ob2o\$5b3o41bo\$8bo\$7b2o\$43b2o6bo\$ 42bobo5bobo\$44bo4bo3bo\$49b5o\$48b2o3b2o\$49b5o\$9b3o12b2o24b3o\$8bo3bo11b 2o25bo\$7bo5bo21b3o\$7b2obob2o23bo\$36bo2\$10bo\$9bobo\$9bobo\$10bo17b2o\$27bo bo21b2o\$9b2o18bo21b2o\$9b2o5\$2b2o16b3o\$2b2o18bo\$21bo5\$2b3o8b2o\$b2ob2o6b obo\$b2ob2o8bo\$b5o\$2o3b2o3\$6bo\$5bob2o\$5bo2\$5b2obo\$3bo2bo\$3bobo5\$4b3o\$3b o3bo\$2bo5bo\$3bo3bo\$4b3o\$4b3o4\$4b2o\$4b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.38: Boat-bit

A reaction that shows how an eater 1 can be used to eat two gliders, or store a glider in memory.

RLE code: Select all
```x = 20, y = 17, rule = B3/S23 2bo\$obo\$b2o7\$11bo\$9bobo\$10b2o2\$16bo\$16b3o\$19bo\$18b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.39: boat bit into glider

A duoplet spark can turn a boat-bit into a glider.

RLE code: Select all
```x = 8, y = 6, rule = B3/S23 bo\$obobo\$b2ob3o\$7bo\$o5b2o\$bo! #C [[ GRID THEME BOOK ]]```
Figure 6.40: make sync glider

A reaction in which an input glider (top left) is syncronized with a glider-and-LWSS collision (bottom).

RLE code: Select all
```x = 113, y = 13, rule = B3/S23 5bo18bo20bo\$3bobo19b2o19bo17bobo19bo18bo\$4b2o18b2o18b3o18b2o17bobo19b 2o\$9bo19bo19bo15bo3bo15b2o2bo15b2o2bo\$9b3o17b3o17b3o17b3o17b3o17b3o\$ 12bo19bo19bo19bo19bo19bo\$o2bo7b2o7bo2bo7b2o7bo2bo7b2o7bo2bo7b2o7bo2bo 7b2o7bo2bo7b2o\$4bo19bo19bo19bo19bo19bo\$o3bo15bo3bo15bo3bo15bo3bo15bo3b o15bo3bo\$b4o16b4o16b4o16b4o16b4o16b4o\$8bo19bo19bo19bo19bo19bo\$7b2o18b 2o18b2o18b2o18b2o18b2o\$7bobo17bobo17bobo17bobo17bobo17bobo! #C [[ GRID THEME BOOK ]]```
Figure 6.41(b): universal regulator periodic

A universal regulator constructed by Paul Chapmap in 2003.

RLE code: Select all
```x = 160, y = 214, rule = B3/S23 92b2o\$92b2o5\$93bo\$93bo\$92bobo\$91b2ob2o\$90bo5bo\$93bo\$90b2o3b2o3\$92b4o\$ 91b2o2bo\$91b2obo2\$92b2o\$92bo3\$59bo9b2o6b2o13b2obob2o\$52b2o5b3o5bo4bo2b o4bo5bo5bo5bo\$52b2o8bo4bo4bo2bo4bo4bo7bo3bo\$61b2o4bo4bo2bo4bo4b3o6b3o\$ 38b2o29b2o6b2o\$38b2o\$102b2o\$53bo48b2o\$39bo13bo\$38b3o11bobo\$37bo3bo9b2o b2o5b2obob2o\$39bo10bo5bo38b2o\$36bo5bo10bo7bo5bo27b2o5bo\$36bo5bo7b2o3b 2o34b2o7b2ob2o\$37bo3bo20b2ob2o23b2o\$38b3o23bo8bobo16bo6bo5bo\$52b4o20bo \$51b2o2bo16bo3bo22b2obob2o\$51b2obo11bo9bo\$65bobo5bo2bo\$41bo10b2o10bo3b o5b3o21b2o\$52bo11b5o29bobo\$63b2o3b2o29bo\$41bo22b5o30b2o\$39bobo10b2obob 2o6b3o30b3o\$40b2o4bo5bo5bo7bo31b2o\$45bo7bo3bo43bo\$45b3o6b3o2\$34b2o3b2o \$48bo51bo\$35bo3bo9bo49b3o\$36b3o8b3o48b5o\$36b3o58b2o3b2o\$57b2o7b2o30b5o \$57bo8b2o30bo3bo37b2o\$58b3o38bobo38bo\$60bo39bo37bobo\$37b2o99b2o\$37b2o\$ 99b2o\$99b2o4\$63bo9bobo\$64bo11bo\$62b3o7bo3bo\$76bo\$73bo2bo\$74b3o4\$83b2o 19b2o\$84bo19bo\$84bobo6bobo6bobo\$85b2o5bo2bo6b2o\$91b2o\$89b2o3bo\$78bo12b 2o\$79bo12bo2bo\$77b3o13bobo5\$93bo\$92bo16b2o\$92b3o8b2o3b2o\$103b2o5bo5\$ 73bobo17bo\$76bo17bo28b2o\$72bo3bo15b3o29bo\$76bo47bobo6b2o\$73bo2bo48b2o 6bo2bo\$74b3o60bo9bobo\$130bo6bo7bo3bo\$78bo26b2o5b2o14b2o7bo7bo\$77bo27b 2o5bo11b2o7bo2bo7bo4bo8b2o\$77b3o30bobo10b2o8b2o10bo12b2o\$110b2o13bo19b o3bo\$96b2o8b2o28bobo8bobo\$36bo59b2o8bobo27b2o\$36b4o67bo29bo\$20bo16b4o\$ 19bobo5b2o8bo2bo5b2o51bo8bo\$17b2o3bo14b4o5b2o49b2o9bo22b2o\$12b2o3b2o3b o4bobob2o3b4o58b2o31b2o\$12b2o3b2o3bo5b2o3bo2bo39bo29bo3bo\$19bobo10bo 43b3o25b3obob3o31b2o\$20bo8bo2bo46bo23bo4b2o3bo30bobo\$37bo2bo26bo2bo7b 2o22bobob2o2b2obo20bo4b2o6bo\$41bo29bo30bob2o2b2o2bo20bobo2bo2bo2bo2bo 7b2o\$37bo3bo25bo3bo29b2obob2o2b2o9b2o10b2obob3o6bo7b2o\$38b4o26b4o27bo 2bobobo2bo11b2o10b2ob2o6bobo\$75bo23b2o2b2ob4o23b2obo7b2o\$27bo46b2o29bo 27bobo\$27b2o45bobo28bobo26bo\$26bobo17b2o7b2o49b2o\$46bo9bo\$37bo9b9o28bo \$36b2o6b3o2b5o2b3o23b2o\$36bobo5bo2bo2b3o2bo2bo24b2o\$8bo36b2o9b2o\$6b4o 6b2o2b2o\$2o3bobob2o5b4obo2bobo\$2o2bo2bob3o5b2obo3bo3bo16bo7bo\$5bobob2o 4bo12bo15b4o5bobo\$6b4o14bo4bo9b2o2bo2b2o8b2o4b2o\$8bo19bo10b2o2b2o11b2o 4b2o\$24bo3bo7b2o10bo7b2o32bo\$24bobo8b3o10bo4bobo33b2o\$36b2o10bo4bo35bo bo\$39b2o\$39b2o\$112b2o\$112b2o\$89bo\$89b3o\$92bo\$91b2o\$92b3o\$85b2o6bobo\$ 85b2o6bobo\$94bo\$105bo\$104b2o3b2o3b2o\$77b2o12b2obob2o6bobo\$77bobo11bo5b o12bo3bo\$74b2obobo12bo3bo14b3o\$74bobobo14b3o3bo11b3o\$76bo22b2o\$74bo2bo 7bo12bobo\$77bo6b3o23bo\$69bo3bo3bo5b5o21b3o\$68b3o6bo4b2o3b2o19bo3bo\$67b 2obo3bo2bo5b5o22bo\$67b3o6bo6bo3bo19bo5bo\$60b2o6b2o4bobobo5bobo9bo10bo 5bo\$60b2o12b2obobo5bo10bo11bo3bo\$77bobo15bobo11b3o\$77b2o15b2ob2o\$87bo 5bo5bo\$85b2ob2o6bo\$80bo12b2o3b2o\$79bo4bo5bo\$79b3o\$84b2obob2o4bo\$68b2o 25bo\$69b2o23bo15b2o\$59b5o5b2o39b2o\$58bob3obo3bobo\$59bo3bo3b2o27b2o\$60b 3o4b2o27b2o\$61bo\$62b2o\$62bobo\$62bobo\$63bo2\$75b3o\$60b2obob2o8bo7b3o\$60b o5bo9bo5bo3bo\$61bo3bo15bo5bo\$62b3o17bo3bo\$83b3o\$82bo2bo\$82b3o\$81bob2o\$ 81bobo\$82bo2\$63b2o\$63b2o14b2o3b2o\$79bobobobo\$80b5o\$81b3o\$82bo7\$81b2o\$ 81b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.42(a): p30 PRNG gun

A pseudo-random glider gun with period 30*10961685 = 328,850,550.

RLE code: Select all
```x = 134, y = 121, rule = B3/S23 39b2o\$40bo\$40bobo5bo\$41b2o3b4o\$45bobob2o9b2o\$44bo2bob3o8b2o\$45bobob2o\$ 46b4o\$40bo7bo\$20b2o18b2o\$20b2o17bobo\$49bo\$50bo\$20b3o25b3o\$20b3o2\$32b2o \$33b2o\$18b2o3b2o7bo\$19b5o33bo\$20b3o32bobo\$21bo34b2o2\$25bo\$25b2o\$24bobo \$64bo\$65bo\$18b2o43b3o\$19bo\$16b3o\$16bo\$28b2o\$28bobo\$28bo43bo\$70bobo\$71b 2o4\$35b3o\$35bo43bo\$36bo43bo\$78b3o4\$43b2o\$43bobo\$43bo43bo\$85bobo\$86b2o 4\$50b3o\$50bo\$51bo3\$126b2o\$126b2o\$58b2o\$58bobo\$58bo\$37b2o\$37bo2bo\$41bo 9bobo\$25bo15bo7bo3bo\$22b4o15bo7bo25b2o49bo\$13bo7b4o12bo2bo7bo4bo11b3o 8bo48b3o\$12bobo6bo2bo12b2o10bo15bo10bobo4bo40b5o\$11bo3b2o4b4o24bo3bo6b 2o4bo10b2o3bobo38b2o3b2o\$2o9bo3b2o5b4o14bobo8bobo6bobo18bob2o15b2o\$2o 9bo3b2o8bo14b2o20bo17b2ob2o14bobo\$12bobo26bo20b2o17bob2o13bo\$13bo68bob o13bo2bo23b3o\$22bobo48b2o8bo5bo8bo26b3o\$23b2o48bobo13bobo7bobo5b2o\$23b o49bo15b2o9b2o5bobo18bo\$34bo74bo17bobo\$32b2o75b2o15bo3bo\$33b2o92b3o\$ 120bo4b2o3b2o\$30bo13bo2bo26bo2bo4bo30b2o5bobo\$31b2o15bo11b4o14bo2bo31b 2o5b2o\$30b2o12bo3bo10bo3bo10bo3bo2b3o\$34b3o8b4o14bo11b4o\$36bo22bo2bo\$ 25bo9bo\$24bobo86bo\$12b2o10b2obo8bobo73bo\$12b2o10b2ob2o6bo2bo73b3o15b2o \$24b2obo6b2o10b2o82bo\$24bobo5b2o3bo8b2o83b3o\$25bo8b2o5b2o90bo\$35bo2bo 4bo\$36bobo\$105bo\$105bobo\$105b2o3\$102b3o\$102bo\$103bo\$96b2o\$96b2o2b2o\$ 94b2obo2b2o\$94b3o\$110b2o9b2o\$110bobo7bobo\$95b2o7bo5bo8bo6b2o\$95b2o6bob o13bo2bo2bo2bob2o\$102bob2o13bo6b2o2b2o\$101b2ob2o14bobo\$102bob2o15b2o\$ 98b2o3bobo\$97bobo4bo\$97bo\$96b2o! #C [[ GRID THEME BOOK ]]```
Figure 6.43: life computes pi

A pattern with population in generation t equal to approximately (pi-2)t^2/720.

RLE code: Select all
```x = 324, y = 324, rule = B3/S23 163bo13bo\$162b3o11b3o\$132bo13bo14b2obo5bo4b2obo\$131b3o11b3o13b3o5b3o3b 3o\$131bob2o4bo5bob2o13b2o5bob2o3b2o\$132b3o3b3o5b3o\$132b2o3b2obo5b2o2\$ 172bo\$162b3o5b3o\$137bo24bo2bo5bo\$137b3o5b3o14bo5bo2bo\$138bo5bo2bo14bo 5b3o\$138bo2bo5bo15bo\$139b3o5bo\$146bo2\$179bo\$178b3o\$130bo47bob2o\$129b3o 47b3o\$128b2obo47b2o\$128b3o27bo5bo\$129b2o26b3o3b3o\$145bo5bo4b2obo3bob2o \$144b3o3b3o3b3o5b3o7b2o\$143b2obo3bob2o3b2o5b2o7b2o\$134b2o7b3o5b3o21bo\$ 135b2o7b2o5b2o8bo\$134bo25b3o\$148bo10bo3bo5b2o\$147b3o9bo3bo4b2o\$139b2o 5bo3bo19bo9b3o11b3o\$140b2o4bo3bo29bo2bo10bo2bo\$113b3o11b3o9bo40bo6b3o 4bo\$112bo2bo10bo2bo30bo19bo5bo2bo4bo\$115bo4b3o6bo30bo20bo4bo3bo4bo\$ 115bo4bo2bo5bo19bo10bo26b4o\$79bo13bo20bo4bo3bo4bo20bo39bo\$78b3o11b3o 24b4o26bo\$77b2obo5bo4b2obo25bo74bo18b3o11b3o\$77b3o5b3o3b3o100b3o16bo2b o10bo2bo\$78b2o4bo2b2o3b2o20bo79bob2o18bo4b3o6bo\$84b2ob2o24b3o79b3o18bo 4bo2bo5bo\$83b3o2bo23b2obo79b2o18bo4bo8bo\$84b2obo24b3o\$85bo27b2o53bo16b 2o32bo\$85bo3bo2b3o72b3o16bo32bo\$86bobo3bo2bo27b2o16bo24b2obo45bo5bo\$ 87bo4bo30bo16b3o23b3o45b3o3b3o\$92bo47bob2o22b3o9b3o6b3o23b2obo3b3o\$93b o6bo5bo34b3o23b2o9bo2bo4bo3bo22b3o4b2o\$99b3o3b3o12b3o6b3o9b3o34bo6bo5b o22b2o5b5o\$98b2obo3bob2o10bo3bo4bo2bo9b2o35bo7bo14b3o3b3o13b3o\$98b3o5b 3o9bo5bo6bo47bo7b4o10bo2bobo2bo\$77bo21b2o5b2o15bo7bo69bo7bo10bo\$76b3o 40b4o7bo70bo7bo10bo\$76bob2o23bo63b3o3b3o26bobobobo13bo7b3o\$77b3o22b3o 55b2o5bo2bobo2bo46b2o6bo2bo\$77b2o22bo3bo28b3o3b3o16bobo5bo7bo29bo15b2o 7bo\$134bo2bobo2bo5b2o9b2o6bo7bo28b3o14bo8bo\$134bo7bo5bobo17bobobobo28b 2ob2o23bo\$81bo19b2ob2o28bo7bo6b2o53b3o\$81b2o12bo7bo31bobobobo29bo9bo 22b3o\$80bobo11b3o12b3o58b3o6b2o23b3o\$93b2obo12bo2bo15bo9bo21bo8b2ob2o 6b2o16bo5bobo5b3o\$93b3o5b3o5bo19b2o6b3o20b2o7b2ob2o23b3o4bobo4bo2bo\$ 86bo6b3o6b2o5bo18b2o6b2ob2o7bo12bo8bobo23b2obo5bo8bo8b3o\$86b2o5b3o13bo 26b2ob2o7b2o21bo24b3o15bo8bo\$85bobo6b2o13bo27bobo9bo46b3o15bo9bo\$110bo 27bo57b3o15bo\$197b2o14bo\$91bo126b3o\$91b2o125bo\$90bobo126bo2\$266b2o\$96b o116b3o48b2ob2o13b2o\$96b2o115bo50b4o13b4o\$95bobo90bo25bo50b2o14b2ob2o\$ 187b3o69bo23b2o\$121bo64b2obo70b2o\$113b3o4b3o63b3o70b2o\$113bo2bo3bob2o 63b2o5bo84bo\$113bo7b3o69b3o82b4o\$113bo7b2o69b2obo58bo21b5obo\$114bo77b 3o60b2o18bo6b2o\$193b2o59b2o18bo3bob3o\$275bo3b3o\$276bo\$58bo190bo\$57bo 192b2o30b2o\$57bo3bo36b3o148b2o22b4o4b4o\$40b4o13b4o37bo2bo107bo45b4o13b o3bo4b2ob2o\$40bo3bo53bo109b3o43b6o16bo6b2o\$40bo57bo108b2obo33bo9b4ob2o 14bo\$41bo56bo108b3o35b2o11b2o\$99bo107b3o34b2o\$52b2o13bo140b2o17b5o37b 2o\$43bo8b2o13bobo156bo4bo36b4o\$42bo9b2o4bo8b2o150bo11bo36b2ob2o\$42bo6b 2obo4b3o160bo9bo26bo3bo2bo5b2o\$42b2o4b5o6b2o153bo5bo35b2o3bo3bo\$44bo4b 3o3b2o15bo28b3o111b6o35b2o2bo4b2o\$46b2o24bobo25bo2bo102bo54bo3bo\$72b2o 29bo101b3o53bo2bo5b2o\$103bo101bob2o59b2ob2o\$40b4o5b2o52bo102b3o59b4o\$ 40bo3bo3b2ob2o24bo25bo102b3o60b2o\$40bo8b4o12b6o6bobo22bo103b3o45b6o\$ 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31bo5b3o20bobo5b2o192bo3bo30b2o\$4b2o24b2o28b2o5b2o194b4o29bobo21b2o\$3b 4o4b4o16bo287b4o\$2b2ob2o4bo3bo9b2o5b2o285b2ob2o\$3b2o6bo12b2ob2o241b4o 30b2o15b2o\$12bo12b4o230bo9bo3bo28b2ob2o\$26b2o22b3o205b2o13bo14b4o10b4o \$49b5o5b4o195bobo11bo14bo3bo11b2o\$13b2o18bo14b2ob3o5bo3bo143bo83bo\$5b 2o7bo17b2o15b2o8bo7b2o139bo81bo\$4b2o5bo2bo17bobo25bo2bo2b4o134bo3bo\$5b 2o4b3o51b2o3bo134b4o62bo5bo\$6bo3b2o48bo2bo2b4o171b2o27bobo3b2o9b2o\$28b o30bo7b2o171b4o25bo3bo12bo2bo\$27b2o30bo3bo176b2ob2o24bo3bo12bo2bo\$4b2o 21bobo29b4o179b2o25bo3bo11b2ob2o\$3b4o262bo2bo13b2o\$2b2ob2o264bo\$3b2o 15b2o30b4o181b2o\$19b2ob2o28bo3bo9bo169b4o\$20b4o10b4o14bo13b2o168b2ob2o 40b2o5b4o\$21b2o11bo3bo14bo11bobo170b2o39b2ob2o3bo3bo\$34bo218b4o22b4o8b o\$35bo216b6o22b2o8bo\$114b2o136b4ob2o\$48bo5bo58b2ob2o138b2o\$37b2o9b2o3b obo27b2o29b4o\$36bo2bo12bo3bo25b4o29b2o150b4o\$36bo2bo12bo3bo24b2ob2o 180bo3bo\$36b2ob2o11bo3bo25b2o178bo7bo\$38b2o13bo2bo82bo117b7o2bo2bo\$54b o83bo78b2o37bo2b3ob2o\$138bo60b2o12b4ob2o37b7o2bo2bo\$83bo54bo2bo57b3o 11b6o7b3o33bo7bo\$34b4o5b2o37bo55b3o57bob2o12b4o7b5o36bo3bo\$34bo3bo3b2o b2o35bo3bo111b3o24b3ob2o36b4o\$34bo8b4o35b4o113bo28b2o\$35bo8b2o19bo191b o\$64bo193bo\$64bo5bo45b2o127b2o5bo5bo13b2o8bo\$64b6o45b3o103bo22bobo6b6o 12b4o8bo\$53b2o60b3o102bo25bo24b2ob2o3bo3bo\$52b4o59b3o102bo52b2o5b4o\$ 51b2ob2o59b2obo101bo\$52b2o5bo2bo53b3o101bo29b2o\$58bo3bo54bo102bo2bo25b obo24b2o\$57b2o4bo2b2o35b6o111b3o28bo15b2o3b3o4bo\$58bo3bo3b2o35bo5bo 153b2o6b5o4b2o\$52b2o5bo2bo3bo26bo9bo160b3o4bob2o6bo\$51b2ob2o36bo11bo 150b2o8bo4b2o9bo\$52b4o36bo4bo156bobo13b2o8bo\$53b2o37b5o17b2o140bo13b2o \$78b2o34b3o107bo\$64b2o11b2o35b3o108bo56bo\$48bo14b2ob4o9bo33bob2o108bo 57bo\$39b2o6bo16b6o43b3o109bo53bo3bo\$38b2ob2o4bo3bo13b4o45bo107bo2bo37b 4o13b4o\$39b4o4b4o22b2o148b3o36bo3bo\$40b2o30b2o192bo\$74bo190bo\$47bo\$42b 3o3bo\$41b3obo3bo18b2o59b2o\$40b2o6bo18b2o60b3o77bo\$41bob5o21bo58bob2o 69b2o7bo\$42b4o82b3o69b3o7bo\$44bo84bo5b2o63b2obo3bo2bo\$63b2o70b3o63b3o 4b3o\$62b2o70bob2o64bo\$39b2o23bo69b3o\$38b2ob2o14b2o50bo25bo90bobo\$39b4o 13b4o50bo115b2o\$40b2o13b2ob2o48b3o116bo\$56b2o2\$104bo126bobo\$105bo125b 2o\$103b3o126bo\$110bo14b2o\$109bo15b3o57bo27bo\$99bo9bo15b3o46bo9bobo27bo 13b2o6bobo\$100bo8bo15b3o24bo21b2o7b2ob2o26bo13b3o5b2o\$98b3o8bo8bo5bob 2o23bobo8bo12bo7b2ob2o6b2o18bo5b2o6b3o6bo\$109bo2bo4bobo4b3o23b2ob2o7b 2o20b3o6b2o19bo5b3o5b3o\$109b3o5bobo5bo16b2o6b2ob2o8bo21bo9bo15bo2bo12b ob2o\$117b3o23b2o6b3o58b3o12b3o11bobo\$117b3o22bo9bo29bobobobo31bo7bo12b 2o\$117b3o53b2o6bo7bo28b2ob2o19bo\$92bo23b2ob2o28bobobobo17bobo5bo7bo\$ 93bo8bo14b3o28bo7bo6b2o9b2o5bo2bobo2bo\$93bo7b2o15bo29bo7bo5bobo16b3o3b 3o28bo3bo22b2o\$90bo2bo6b2o46bo2bobo2bo5b2o55b3o22b3o\$91b3o7bo13bobobob o26b3o3b3o63bo23b2obo\$103bo10bo7bo70bo7b4o40b3o\$103bo10bo7bo69bo7bo15b 2o5b2o21bo\$114bo2bobo2bo10b4o7bo47bo6bo5bo9b3o5b3o\$98b3o13b3o3b3o14bo 7bo35b2o9bo2bo4bo3bo10b2obo3bob2o\$98b5o5b2o22bo5bo6bo34b3o9b3o6b3o12b 3o3b3o\$102b2o4b3o22bo3bo4bo2bo9b2o23b3o34bo5bo6bo\$101b3o3bob2o23b3o6b 3o9b3o22b2obo47bo\$101b3o3b3o45b3o23b3o16bo30bo4bo\$102bo5bo45bob2o24bo 16b2o27bo2bo3bobo\$104bo32bo16b3o72b3o2bo3bo\$104bo32b2o16bo53b2o27bo\$ 209b3o24bob2o\$94bo8bo4bo18b2o79bob2o23bo2b3o\$93bo5bo2bo4bo18b3o79b3o 24b2ob2o\$93bo6b3o4bo18b2obo79bo20b2o3b2o2bo4b2o\$93bo2bo10bo2bo16b3o 100b3o3b3o5b3o\$93b3o11b3o18bo74bo25bob2o4bo5bob2o\$174bo26b4o24b3o11b3o \$134bo39bo20bo4bo3bo4bo20bo13bo\$133b4o26bo10bo19bo5bo2bo4bo\$128bo4bo3b o4bo20bo30bo6b3o4bo\$129bo4bo2bo5bo19bo30bo2bo10bo2bo\$129bo4b3o6bo40bo 9b3o11b3o\$126bo2bo10bo2bo29bo3bo4b2o\$127b3o11b3o9bo19bo3bo5b2o\$154b2o 4bo3bo9b3o\$153b2o5bo3bo10bo\$161b3o25bo\$162bo8b2o5b2o7b2o\$148bo21b3o5b 3o7b2o\$149b2o7b2o5b2o3b2obo3bob2o\$148b2o7b3o5b3o3b3o3b3o\$157b2obo3bob 2o4bo5bo\$158b3o3b3o26b2o\$159bo5bo27b3o\$143b2o47bob2o\$142b3o47b3o\$142b 2obo47bo\$143b3o\$144bo2\$177bo\$176bo5b3o\$160bo15bo5bo2bo\$153b3o5bo14bo2b o5bo\$152bo2bo5bo14b3o5b3o\$152bo5bo2bo24bo\$151b3o5b3o\$151bo2\$176b2o5bob 2o3b2o\$175b3o5b3o3b3o\$146b2o3b2obo5b2o13b2obo5bo4b2obo\$146b3o3b3o5b3o 13b3o11b3o\$145bob2o4bo5bob2o14bo13bo\$145b3o11b3o\$146bo13bo! #C [[ GRID THEME BOOK ]]```
Exercise 6.5: glider to hwss to glider

How to convert two gliders into a heavyweight spaceship, and a heavyweight spaceship back into a glider.

RLE code: Select all
```x = 66, y = 18, rule = B3/S23 2bo\$obo11b2o38b2o6b2o\$b2o11bobo26b2o7bo4bo2bo4bo\$5b2o8bo25bo4bo5bo4bo 2bo4bo\$4bobo40bo4bo4bo2bo4bo\$6bo4bo2bo26bo5bo6b2o6b2o\$15bo26b6o\$16b2o\$ 10bob2o6bo28b2o\$10bo2bo3bo30b4o\$9bo3bob3o29bobo2bo\$8bo11bo26b2o2bobo\$ 11b3obo3bo32bobo\$11bo3bo2bo35b2o\$8bo6b2obo34b3o\$11b2o39bobo\$13bo38b2o\$ 14bo2bo! #C [[ GRID THEME BOOK ]]```
Exercise 6.6: any wss to glider

Two queen bees can be used to convert an xWSS into a glider.

RLE code: Select all
```x = 60, y = 28, rule = B3/S23 18bo\$16bo3bo\$b6o14bo11b4o\$o5bo9bo4bo10bo3bo10b2o\$6bo10b5o14bo10bobo\$o 4bo26bo2bo6b2o6bo\$2b2o37bo2bo2bo2bo7b2o\$42b2o6bo7b2o\$47bobo\$47b2o2\$41b 3o\$41b3o\$40bo3bo\$39bo5bo\$40bo3bo\$41b3o10\$41b2o\$41b2o! #C [[ GRID THEME BOOK ]]```
Exercise 6.9: lwss filter

An LWSS filter.

RLE code: Select all
```x = 31, y = 16, rule = B3/S23 \$25b4o\$25bo3bo\$25bo\$26bo2bo7\$3o\$2bo\$bo! #C [[ GRID THEME BOOK ]]```
Exercise 6.19: twin bees large spark

A configuration of two twin bees shuttles that creates a very large spark.

RLE code: Select all
```x = 51, y = 23, rule = B3/S23 21b2o\$22bo\$22bobo\$23b2o8bo\$32b2o15b2o\$31b2o16b2o\$32b2o2b2o4\$13b2o17b2o 2b2o\$15bo15b2o16b2o\$2o10b2o2bo15b2o15b2o\$2o11bo2bo16bo\$14bobo\$14b2o2\$ 14b2o\$14bobo\$2o11bo2bo\$2o10b2o2bo\$15bo\$13b2o! #C [[ GRID THEME BOOK ]]```
Exercise 6.25: skewed p29

A skewed p29 pre-pulsar shuttle.

RLE code: Select all
```x = 23, y = 25, rule = B3/S23 10b2o\$9bobo\$9bo\$7b2ob4o\$6bobobo2bo\$6bobo\$4b2o2bo\$3bo4b2o\$3b5o\$b2o4bo 12bo\$o2b2o8b3o3bobo\$2obo9bobo4bo\$3bo9b3o\$3b2o3\$7b2o6b3o3b2o\$7b2o6bobo 3b2o\$15b3o3\$10b2o\$11bo\$8b3o\$8bo! #C [[ GRID THEME BOOK ]]```
Exercise 6.30: minimum snark loop

A single-glider Snark loop with period 216, which is the minimum possible.

RLE code: Select all
```x = 49, y = 49, rule = B3/S23 28b2o\$27bobo\$21b2o4bo\$19bo2bo2b2ob4o\$19b2obobobobo2bo\$22bobobobo\$22bob ob2o\$23bo2\$36b2o\$27b2o7bo\$9bo17b2o5bobo\$9b3o22b2o\$12bo\$11b2o3\$3b2o\$3bo \$2obo20b2o18b2o\$o2b3o4b2o13bo18bo\$b2o3bo3b2o10b3o21bo\$3b4o15bo2b3o14b 5o\$3bo15b2obobo2bo13bo\$4b3o12bobobobobobo12b3o\$7bo13bo2bobob2o15bo\$2b 5o14b3o2bo15b4o\$2bo21b3o10b2o3bo3b2o\$4bo18bo13b2o4b3o2bo\$3b2o18b2o20bo b2o\$45bo\$44b2o\$21bo\$22bo\$20b3o13b2o\$36bo\$13b2o22b3o\$12bobo5b2o17bo\$12b o7b2o\$11b2o2\$25bo\$21b2obobo\$20bobobobo\$17bo2bobobobob2o\$17b4ob2o2bo2bo \$21bo4b2o\$19bobo\$19b2o! #C [[ GRID THEME BOOK ]]```
Solution 6.24(a): p16 bumper

A p16 bumper reflector.

RLE code: Select all
```x = 21, y = 26, rule = B3/S23 13b3o\$15bo\$14bo2\$3bobo\$4b2o\$4bo3\$7b2o\$6bo2bo\$6bobo3bo2bo\$7bo3bo4bo\$11b o5bo\$2b2o10b2ob2o\$3bo7bo7bo\$3o8bobob3o2bo\$o11b2obob3o2\$12b2obob3o\$11bo bob3o2bo\$11bo7bo\$14b2ob2o\$11bo5bo\$11bo4bo\$12bo2bo! #C [[ GRID THEME BOOK ]]```
Solution 6.24(b): p22 bumper

A p22 bumper reflector.

RLE code: Select all
```x = 26, y = 29, rule = B3/S23 2bo8b2o\$3b2o5bobo\$2b2o8bo10bo\$21b3o\$20bo\$20b2o\$14b2o\$7b2o9bo\$6bo2bo3bo 4bo\$6bobo3bo6b2o\$7bo8bob2o2bo\$13bo4bo4bo\$2b2o10bo2bo2bobo\$3bo11b2o\$3o 14b3o\$o\$18b3o\$21b2o\$15bobo2bo2bo\$14bo4bo4bo\$15bo2b2obo\$17b2o6bo\$19bo4b o\$19bo\$22b2o\$16b2o\$17bo\$14b3o\$14bo! #C [[ GRID THEME BOOK ]]```
Solution 6.24(c): p4 bumper fountain

A p4 bumper reflector.

RLE code: Select all
```x = 30, y = 23, rule = B3/S23 obo\$b2o\$bo6\$24b2o\$9bobo8bob3obo\$10b2o8bo3bobo\$10bo8bo2bobob2o\$19bo3b2o 3bo\$12b2o7bo3b2o2bo\$11bo2bo6bob2o2b3o\$11bobo3bo2bo5bo\$12bo8bob2o2bo\$ 21bo3b3o\$7b2o10bo3b2o\$8bo10bo2bobob2o\$5b3o12bo3bobo\$5bo14bob3obo\$24b2o ! #C [[ GRID THEME BOOK ]]```
Solution 6.24(d): p15 bumper

A p15 bumper reflector.

RLE code: Select all
```x = 26, y = 20, rule = B3/S23 13b2o\$12bobo\$14bo2\$5bo\$3bobo\$4b2o3\$7b2o\$6bo2bo4b3o4b3o\$6bobo3b6o2b6o\$ 7bo6b3o4b3o2\$2b2o\$3bo\$3o\$o15bo4bo\$14b2ob4ob2o\$16bo4bo! #C [[ GRID THEME BOOK ]]```
Solution 6.24(e): p5 bumper

A p5 bumper reflector.

RLE code: Select all
```x = 30, y = 19, rule = B3/S23 12bo\$12b2o\$11bobo5bo\$5bo12bobo\$3bobo11bo2bo\$4b2o11bob2ob2o\$16b2o2bobo\$ 18bobo3bo2b2o\$7b2o5bob3obobob4obo\$6bo2bo7bo2bo4bo3bo\$6bobo3bo3bo4b3o2b 3o\$7bo8bo5bobo\$13bo3b2obo3b3o\$2b2o11b2ob2ob3o3bo\$3bo12bo4bo2b3o\$3o13bo b3o3bo\$o16bo\$18bo\$17b2o! #C [[ GRID THEME BOOK ]]```
Solution 6.25: p29 pip reflector

A p29 pipsquirter reflector.

RLE code: Select all
```x = 39, y = 43, rule = B3/S23 10b2o\$9bobo\$9bo\$7b2ob4o\$6bobobo2bo\$6bobo\$4b2o2bo\$3bo4b2o\$3b5o\$b2o4bo 12bo\$o2b2o8b3o3bobo\$2obo9bobo4bo11bo\$3bo9b3o16b2o\$3b2o26bobo3\$7b2o6b3o 3b2o\$7b2o6bobo3b2o\$15b3o\$24b3o\$26bo\$10b2o13bo\$11bo\$8b3o5bo\$8bo6bobo\$ 16b2o\$12b2o7b3o\$11bobo7bo\$11bo5b2o3bo\$10b2o5b2o4\$29b2o\$28b2o\$30bo5\$36b 2o\$36bobo\$36bo! #C [[ GRID THEME BOOK ]]```
Solution 6.30(a): minimum period snark loop a

A single-glider Snark loop with period 232.

RLE code: Select all
```x = 51, y = 51, rule = B3/S23 29b2o\$28bobo\$22b2o4bo\$20bo2bo2b2ob4o\$20b2obobobobo2bo\$23bobobobo\$23bob ob2o\$24bo2\$37b2o\$28b2o7bo\$28b2o5bobo\$9bo25b2o\$9b3o\$12bo\$11b2o3\$3b2o\$3b o21b2o\$2obo22bo19b2o\$o2b3o4b2o11b3o20bo\$b2o3bo3b2o11bo24bo\$3b4o21b2o 14b5o\$3bo15b2o8bo13bo\$4b3o12bobo7bobo12b3o\$7bo13bo8b2o15bo\$2b5o14b2o 21b4o\$2bo24bo11b2o3bo3b2o\$4bo20b3o11b2o4b3o2bo\$3b2o19bo22bob2o\$24b2o 21bo\$46b2o2\$22bo\$23bo14b2o\$21b3o14bo\$39b3o\$14b2o25bo\$13bobo5b2o\$13bo7b 2o\$12b2o2\$26bo\$22b2obobo\$21bobobobo\$18bo2bobobobob2o\$18b4ob2o2bo2bo\$ 22bo4b2o\$20bobo\$20b2o! #C [[ GRID THEME BOOK ]]```
Solution 6.30(b): minimum period snark loop b

A single-glider p4 bumper loop with period 252.

RLE code: Select all
```x = 49, y = 49, rule = B3/S23 21b2o\$13bo7bo9bo\$13b3o3bobo7b3o\$16bob3o7bo\$15bob2o9b2o\$15bo2bo\$24bo\$ 23bobo\$16bo2bo2bo2bo\$17b2o4b2o4\$46b2o\$46bo\$44bobo\$42b2obo\$b2o36b6o\$2bo 36b3o\$2bobo40b2o\$3b2o40bo\$46b3o\$40bo7bo\$7b2o30bobo\$6bo2bo29bo2bo\$7bobo 30b2o\$o7bo\$3o\$3bo40b2o\$2bo41bobo\$2bo2bo2b2o36bo\$5bo2b2o36b2o\$3bobo\$2bo bo\$2bo19bo\$b2o20bo\$21b3o3\$24b2o4b2o\$23bo2bo3b2o\$23bobo\$24bo6bo\$31b2o\$ 19b2o12bo\$20bo7b2o2bo\$17b3o7bobo3b3o\$17bo9bo7bo\$26b2o! #C [[ GRID THEME BOOK ]]```
Solution 6.30(c): minimum period snark loop c

A single-glider p4 and p6 bumper loop with period 252.

RLE code: Select all
```x = 49, y = 49, rule = B3/S23 21b2o\$13bo7bo9bo\$13b3o3bobo7b3o\$16bob3o7bo\$15bob2o9b2o\$15bo2bo\$24bo\$ 23bobo\$16bo2bo2bo2bo\$17b2o4b2o4\$46b2o\$46bo\$44bobo\$42b2obo\$b2o36b6o\$2bo 36b3o\$2bobo40b2o\$3b2o40bo\$46b3o\$40bo7bo\$7b2o30bobo\$6bo2bo29bo2bo\$7bobo 30b2o\$o7bo\$3o\$3bo40b2o\$2bo41bobo\$2bo2bo2b2o36bo\$5bo2b2o36b2o\$3bobo\$2bo bo\$2bo19bo\$b2o20bo\$21b3o3\$24b2o\$23bo2bo4b2o\$23bobo4bobo\$24bo4b3o\$29b2o \$19b2o9bobo\$20bo10bobo2b2o\$17b3o12bo2bobo\$17bo15b4o\$34b2o! #C [[ GRID THEME BOOK ]]```
Solution 6.30(e): minimum period snark loop e

A single-glider p4 and p5 bumper loop with period 220.

RLE code: Select all
```x = 45, y = 46, rule = B3/S23 21b2o\$13bo7bo9bo\$13b3o3bobo7b3o\$16bob3o7bo\$15bob2o9b2o\$15bo2bo\$24bo\$ 23bobo\$16bo2bo2bo2bo\$17b2o4b2o17b2o\$42bo\$40bobo\$38b2obo\$35b6o\$35b3o\$ 41b2o\$41bo\$b2o39b3o\$2bo33bo7bo\$2bobo30bobo\$3b2o30bo2bo\$36b2o2\$7b2o\$6bo 2bo30b2o\$7bobo30bobo\$o7bo33bo\$3o39b2o\$3bo\$2bo29bo\$2bo2bo2b2o8bo12bobo\$ 5bo2b2o9bo10bo2bo\$3bobo11b3o10bob2ob2o\$2bobo24b2o2bobo\$2bo25bo2bobo3bo 2b2o\$b2o17b2o6b2obob2ob2o2bobo\$19bo2bo5bo2bobo8bo\$19bobo6b8ob5o\$20bo7b 2o5bo\$28bo2bobo3b3o\$15b2o11b2ob2ob3o3bo\$16bo12bo4bo2b3o\$13b3o13bob3o3b o\$13bo16bo\$31bo\$30b2o! #C [[ GRID THEME BOOK ]]```