Gun Discussion Thread

[BlinkerSpawn]

p18 glider gun, based on partial by Period1GliderGun

Code: Select all

x = 73, y = 83, rule = B3/S23
rle

40 cells of population reduction, some of which comes at the cost of an extra row and column:

Code: Select all

x = 74, y = 84, rule = B3/S23
35b2o$36bo$33b3o7bo$33bo2b3o3bobo$28bob2obobo3bo3bo$28b2obobobo2b2o$
33b4o2b4o$32bo5b2o25b2o$32b3ob2ob5o21bobo$35bobo29bo$34bo2bobobobo19b
4ob2o2b2o$34b6o4bo2bo2bo2bob2o6bo2bobobo2bo$42bob4o2b4obobo3b2o2bo4b2o
$34b2ob3o8b2o5bobo2bo2b2o2b2obo$34b2obo3bob2obo2bob4obo4b2o2b2obobo$
37bo3bobob3o2bobobo8bo5bo$34b2ob2ob2obo8bobo6b2obob3o$34b2obo2b3ob4o3b
2o2b2obobobobobo$37bo6bo3bo2bo4bob2o$37bobo4bo2bobob2obo2bo5b3o$35bobo
b2o2b2ob3obobob2obo$34bobobobo3bobobo3bo4b2o$34bobobo5bobobo2bobobo2bo
8b2o$35bobobo3b2obo4bobobobo$37bo2b2o5bob2o2bo2bo9bobo$6b2o22b2o5bo2b
2ob3obobo2b2obobo7b3o$6bo3b2o18bo3b2obo8bobobo2bob2o7b2o$7bo2bo2b2o3b
2o12bo2bobobob2o2bo2bob4obo2bo7bo$6b2o4b2obo2bo12b3o3bob2o5b2obo3bobob
2o$o2b2o3b4o3bo4bo15bo3bo8bob2o2bo11bo$4ob2o6b2ob4obo11b4obobo5b3obobo
bo2bobo3b2o2bo$7b2ob2o4bo2bobo7b2obo5b2o2b2obo2bobo3b3o2bo5b2o$2b2obo
3bo5bob2o2b2o5bobob4ob2o7bobobo2bo3bo3b2o$2bo2bobobob2ob2o3b2o3bo4bo3b
2o3bo2bo5b2o3b2o2bob2o$3b2o2b2o2bob3o3bob2ob2o2b2o4bobobo5bo2bo3b2obo
2b3o8bo$4bobo2bobo2bo4bo6b3o7b3o2bob2ob2o3b2ob2o4b3o6bo$4bob2obobo5bob
ob2obo7bob2o3bo4b2obobob2o5b2ob2o4b3o$3b2o2bob2ob6obo2bobob3ob3o9bob2o
3b2ob2o4b3o$2bo2b2o5bo5bobo2bo3b2o5b2o6b2o2b4o3bo2b2obo$2b2o8bob2o2bob
2obob2o3b3obo5bo2bo6bo3bo2bo2bo2bo9bo$13bobo3bo2bobobo2bo2bobo4bob2o6b
o2bobobo4b2o8bobo$20bobobo3bob2o2b2o3bo12b2obob4o4bo6b2o$19b2obobo4bob
obo4b2o10b2o3bo5bo$23bo3bobo3bo18b3obob4o2bo$24b2obo5b2o11b3o2bo2bobob
o$25bobo2bo17b2ob3o2bobo2b2o2bo$24b2obobobo15b4o3b2o3b2o$20b2o2b2o2bo
2bo14b3obob2o7b2ob2o$20bo2bo7bob2o7b2o4bobo2bo3b3ob2o$21b4o2b5ob2o6bob
3ob3o2bo3bo2bo$18b3o3bo16bo4bo6b4o3b3o$17bo3b2o2b2ob2o12b2o4b5o8b4o$
18bo2bo3b2obobo8b3o2bo2bo4bobo5bo4bo$19bobob2obo3bo8bo2b3o2b3o3bobo8b
2o2bo$20b2ob3o4b2o8bobob3o3bo3bo5bob2o2b3o$26bobobo10bo4bobobo4b3o6b2o
$20b3ob2ob2obo8bobobo2bobobobo4bo2b4o2bo$17bobo9bo9b2obobobob2obobo7bo
2bobo$17b2ob2o2bob3o13bo4bo3bo2bo3bo2bobobo$20bob3obo15bob3o2b2o2b2o3b
obob2o$20bob3obo12b2obobo2b2o5bobo7bo$19b2obo3bob2o9b2obob2o2bo4bo2b2o
b6o$19bo2bobobo2bo12bo2bobo5bobo$21bo5bo14b2o2bo7bob2ob4o$22b5o29bo6bo
$24bo29bobo3bo2bo$54b2o5b2o$60bo4bo$61b5o$57bob2o$56bo3bob2o$54b3obob
2obo$53bo3bobo$54b2obobob2o$55bo5bo$55bob3obobo$51bob2obo3bob2o$51b2ob
obo3bo$56bobobo$55bo5b2o$55b2ob2obo$56bobo2bo$54bo4b2o$54b2o!

[iNoMed]

Fusing the previously-found stator reductions with the endcaps from the original 73x83 period-18 glider gun design for the purpose of retaining the minimised bounding box, here's the p18 gun variant that I currently have in my p14-p99 true-period glider gun collection:

Code: Select all

x = 73, y = 83, rule = B3/S23
34b2o$35bo$32b3o7bo$32bo2b3o3bobo$27bob2obobo3bo3bo$27b2obobo4bo2b2o$
32bob3o3bo$31bo10bo21b2o$31b6ob4o22bobo$34bobobo3bo23bo$33bo4b2o22b4ob
2o2b2o$33b4ob2obobo2bo2bo2bob2o6bo2bobobo2bo$42b5o2b4obobo3b2o2b2obob
2o$33b2ob2o3bo5b2o5bobo2bo2b2o2b2obo$33b2obo2bo2b2obo2bob2obobo4b2o2b
2obobo$36bo3bobob3o2bo3bo8b2o4bo$33b2ob3o3bo8bobo6b2obob3o$33b2obob2ob
ob4o3b3ob2obobobo3bo$36bo2b2o2bo3bo4bo2bob2o$36bob2o3bobo2bo2bobo2bo6b
o$34bobo2bo2b2obo3bobob2obo6bo$33bobobobo3bobobo3bo2bob2o$33bobobo5bob
o4bobo4bo$34bobob2o2b2obob2obobobobo10bo$2o34bobobo5bob3obobobo7b2o$o
28b2o5b2ob3ob2obo3b3obobo6bo2bo$2bo6b2o18bo3b2obo5bo2bobobo4bobo6bo2bo
$b4obo2bo2b2o3b2o12bo2bobobobo3bo2bob2obobo2bo6bo$o4b2o4b2obo2bo12b3o
3bobo6b2obo3bobob2o$ob2o3b4o3bo4bo15bobob2o7bob2o2bobo$b2ob2o5bobob4ob
o11b4obob2o4b3obobobo3bo5b2obo$4bob4o3bo4bobo7b2obo12bo2bobo3b4o2bob5o
$b3o2bobo2bob2ob2o2b2o5bobobo2bobo4bo3bobo2b3o3bob2o$bo2bobobob2o6bo4b
2o4bobo3bob2o6bob2o4bobo2b2o$2b2o2bobobo6b2obob4o2bo3b2obob2o2b4o8bob
2o3bo$3bobo2bobob3o3bo4bob4o3b2obob2o3bo3bo6b2obo4bo4bobo$2bo2b2obobo
5bobob2o6bo2b2ob4o3bo4bobo4bo3bo3bo5b2o$2b2o2bob2ob6obo2bob3ob2ob2o9bo
10bo7bo6bo$6bo4bo5bobo2bo4bo5b2o5b2o2b4o2b4ob2o$5b2o4bob2o2bob2obob2ob
5obo5bo2bo3bo2bo3bo2b2ob3o$12bobo3bo2bobob2obo2bobo4bob2o8b2obobo4b2o$
19bobobo3bo2bo2b2o3bo10bob2obob4obo$18b2obobo4bobobo4b2o11bo3bo5bo$22b
ob2o3bo2bo13bo2bob3obob4o$23b2obo5b2o12b5o2bobobo3bo$26bo2bo15bo4b3o2b
obob2o$26bobobo14bo7b2o3b2o2b3o$19b2obob2obo2bo14bo3bob2o8b2o$19bo4bob
o3bob2o7b2obo4bo2bo3b3ob3o$20b2obo3b4ob2o6bob7o2bo3bo2bo$17b3o3bobo14b
o3b2o6b4o3bo$16bo3b2obobob2o12b2o3b6o10b2o$17bo2bobo4bobo8b3o2bo2bo4bo
bo6b2o2bo$18bobobo2b2o2bo8bo2bo4b3o3bobo5bob3o2bo$19b2obo2b2o2b2o8bobo
bobo3bo3bo8bo2b3o$25bobobo10bob2obo3bo4b3o2bo3b2o$19b2o3b4obo8bobobo2b
obobobo4bo2b4o2bo$16bobo2b3o4bo9b2obo2b2ob2obobo10bobo$16b2ob3obob3o
13bobo2bo3bo2bo4b3obobo$19bo5bo15bob3o2b2o2b2o2bobob3o$19bo3bobo12b2ob
o4b2o5bobobo5bo$18b2obobobob2o9b2obob2o2bo4bo2b2o2b5o$18bo2b2ob2o2bo
12bo2bobo5bobo$20bo5bo14b2o2bo7bob2o2b3o$21b5o29bo2bo3bo$23bo29bobo4bo
bo$53b2o4b3o$59bo4bo$58bob5o$58b2o$55bobo3b2o$53b3obob2obo$52bo3bobo$
53b2o5b2o$54bobobobo$52bobob3obo$50b3o2bobobob2o$49bo3bobo3bobo$50b3o
2b2ob2o2bo$52bobo2bo2bobo$54b2ob2obob2o$52bo2bobo2bo$52b2o5b2o!

[JP21]

My reduction of the p18 glider gun:

Code: Select all

x = 69, y = 83, rule = B3/S23
34b2o$35bo$32b3o7bo$32bo2b3o3bobo$29b2obo2bo2bobobo$27bo2bobobob2ob3o$
27b2o3b2ob2o3bo$31bo5bo23b2o$31b4obob5o17bobo$36bo4bo18bo$33bo2bo3bobo
10bo4b2ob4o$33b3ob4o2bo2bo2bo2bobo2bobo4bo$38bob2ob4o2b4obo2bobob2o2b
2o$33b2ob2o3bo5b2o5b2obobo3b2o2bo$33b2obo3bob2obo2bobob2o3bobob2o2b2o$
36bob2o2bob3o2bobobob2obo4bo$36bobobobo8bobo2bobob2obob2o$33b2obo4bob
4o3bo3b2o3bob2ob2o2bo$33b2obo6bo3bo2bo4bob2o8b2o$36bobo4bo2bobob2obo2b
o$36bo2b2ob2obo2bo2bob2obo$37bo5bobo5bo2bob2o$35bobobo3bobob4obo4bo$
34bobob2o2b2obob2obobo3b2o$34bobo9bobo3bobob2o6b3o$32b3obob7obo5bobob
2o5bo2bo$3b2o2b2o22bo4bobo3bo2bobobo2bobob2o5b3o$b3obo2bo2bobo3b2o12bo
b2obo2bo4bo2bob3o2bo2bo$o4b2o4b2obo2bo14b2o2bobobo4b2obo3bobob2o$ob2o
3b4o3bo4bo15bobo2bo7bob2o2bobo$b2ob2o6b2ob4obo11b4o3b2o4b3obobobo3bo$
4bobob3o2bo4bobo7b2obo4bo3bo3bo2bobo3b4o2b2obo2bo$b4obo4bob2o2b2ob2o7b
ob2o2b3o6b2obob4o3bo5b3o$bo2bobobob3o3bobobo4bo3bobobobo2bo2bobobob2o
2bobobo2bobo$2b2o2bobobob2o3b2o3bo5b2obobobo3bob7o4b2o2b2ob2o$3bobo2bo
bo2bo4bobo2bob2ob2o15bobo4b2o2b2o2b2o6bo$2bo2b2obobo5bobob2obo6bo3b2ob
2o2b2o4bo4b3o5b2o4bobo$2b2o2bob2ob6obo2bob2ob6o4bo4b2o11bobo10b2o$6bo
4bo5bobo2bo10b2o5b3o2b3o2b2ob5obobo$5b2o4bob2o2bob2obob2o3b3obo5bo2bo
3b2obo3bo3bobobo$12bobo3bo2bobobo5bobo4bob2o7bobobobo6bo$19bobobo2b3ob
o2b2o3bo10bo2bobob4obo$18b2obobo4bobobo4b2o10bo4bo6bo$22bo2bo3bo2bo13b
o4b3obob5o$23b2obo5b2o11b4o4bobobo3bo$26bo2bo15bob2ob3o2bobob5o$26bobo
bo13b3o6b2o3b2o2b2o$19b2o2b2o2bo2bo13b2o4b3o$19bo2bobobo3b2o9b2o4bobo
2bo3b5obo$20bob2ob5o10bobo3b3o2bo3bo2bob2o$17b3o3bo6b2o8bo11b4o$16bo3b
2obo3b2o2bo9b4ob6o8b4o$17bo2bob4obob2o7b3o4bo5bobo6bo3bo$18bobob2obobo
bo8bo2bo2b5o3bobo5bobobo2bo$19b2o3bo2bobo9bobobobobobo3bo7b2o2b3o$21bo
5bob2o9bo2bobo3bo4b3o2bo3b2o$19b7obo2bo7bobobo2bobob2o5bo2b4o2bo$18bo
4bo4bo9b2obob3ob2o2bo6bo4bobo$17bobobobob3o13bobo2bo3bo6b2obobobo$19bo
2bo2bo15bob3o2b2o6bobobobo$16b2obo2bo2bo14b2o4b2o7bob2o4bo$19bobobob2o
14bob2o2bo7b2o3b4o$18bo2b4o2bo13bo2bobo6b2o$19b2o4b2o15bo2bo6bo2b2o2b
3o$21b4o18b2o6bobobo6bo$21bo2bo27bo2bo4bobo$53b2o4bobo$58bo5bo$58bob5o
$57b3o$55bobo3b2o$53b3obob2obo$52bo3b3o$53b2o5b2o$54bobobobo$52bobo5bo
bo$52b2obobobob2o$55bobobo$55b5o$53b2o5b2o$52bo2b2ob2o2bo$53bo2bobo2bo
$54b2o3b2o!

(quick edit, removed eater 1)
note: this reduction removes 54 cells from the original, while also reducing bounding box further
[EDIT, 2 hours after posting] A slight population improvement:

Code: Select all

x = 69, y = 83, rule = B3/S23
35bob2o$35b2obo$33b2o7bo$32bo2b3o3bobo$32bobo3bo3bo$31b2o4bo2b2o$34b3o
3bo$31b2o9bo18b2o$30bo2b4ob4o18bobo$31b2o3bobo3bo17bo$33bo4b2o13bo4b2o
b4o$33b4ob2obobo2bo2bo2bobo2bobobo2bo$42b5o2b4obo2bobob2o2b2o$33b2ob2o
3bo5b2o5bob2ob2o2b2o2bo$33b2obo2bo2b2obo2bob2obobo3bob2o2b2o$36bo3bobo
b3o2bo3bobob2o4b2o$36b3o3bo8bobo2bo2b3obob2o$33b2obob2obob4o3b3ob2o2bo
2bo3bo2bo$33b2obo2b2o2bo3bo4bo2bob2o8b2o$36bob2o3bobo2bo2bobo2bo6bo$
36bo2bo2b2obo3bobob2obo6bo$37bobo3bobobo3bo2bob2o$35bobo5bobo4bobo4bo$
34bobob2o2b2obob2obobobobo10bo$34bobobobo5bob3obobobo7b2o$32b3ob2ob3ob
2obo3b3obobo6bo2bo$3b2o2b2o22bo4bo5bo2bobobo4bobo6bo2bo$b3obo2bo2bobo
3b2o12bob2obobobo3bo2bob2obobo2bo6bo$o4b2o4b2obo2bo14b2o2bobo6b2obo3bo
bob2o$ob2o3b4o3bo4bo15bobob2o7bob2o2bobo$b2ob2o5bobob4obo11b4obob2o4b
3obobobo3bo5b2obo$4bob4o3bo4bobo7b2obo12bo2bobo3b4o2bob5o$b3o2bobo2bob
2ob2o2b2o5bobobo2bobo4bo3bobo2b3o3bob2o$bo2bobobob2o6bo4b2o4bobo3bob2o
6bob2o4bobo2b2o$2b2o2bobobo6b2obob4o2bo3b2obob2o2b4o8bob2o3bo$3bobo2bo
bob3o3bo4bob4o3b2obob2o3bo3bo6b2obo4bo$2bo2b2obobo5bobob2o6bo2b2ob4o3b
o4bobo4bo3bo3bo$2b2o2bob2ob6obo2bob3ob2ob2o9bo10bo7bo$6bo4bo5bobo2bo4b
o5b2o5b2o2b4o2b4ob2o$5b2o4bob2o2bob2obob2ob5obo5bo2bo3bo2bo3bo2b2ob3o$
12bobo3bo2bobob2obo2bobo4bob2o8b2obobo4b2o$19bobobo3bo2bo2b2o3bo10bob
2obob4obo$18b2obobo4bobobo4b2o11bo3bo5bo$22bob2o3bo2bo13bo2bob3obob4o$
23b2obo5b2o12b5o2bobobo3bo$26bo2bo15bo4b3o2bobob2o$26bobobo14bo7b2o3b
2o2b3o$19b2obob2obo2bo14bo3bob2o8b2o$19bo4bobo3b2o9b2obo4bo2bo3b3ob3o$
20b2obo3b3o10bob7o2bo3bo2bo$17b3o3bobo4b2o8bo3b2o6b4o3bo$16bo3b2obobob
2o2bo9b2o3b6o10b2o$17bo2bobo4bob2o7b3o2bo2bo4bobo6b2o2bo$18bobobo2b2o
2bo8bo2bo4b3o3bobo5bob3o2bo$19b2obo2b2o2bo9bobobobo3bo3bo8bo2b3o$25bob
ob2o9bob2obo3bo4b3o2bo3b2o$19b2o3b4o2bo7bobobo2bobob2o5bo2b4o2bo$18bo
2b3o4bo9b2obo2b2ob2o2bo11bobo$19b3obob3o13bobo2bo3bo7b3obobo$16b2obo5b
o15bob3o2b2o6bobob3o$19bo3bobo14b2o4b2o7bobo5bo$17bobobobob2o14bob2o2b
o7b2o2b5o$18bo2b2obo2bo13bo2bobo6b2o$19b2o4b2o15bo2bo6bo2b2o2b3o$21b4o
18b2o6bobobo2bo3bo$21bo2bo27bo2bo4bobo$53b2o4b3o$59bo4bo$58bob5o$58b2o
$55bobo3b2o$53b3obob2obo$52bo3bobo$53b2o5b2o$54bobobobo$52bobob3obobo$
52b2obobobob2o$55bo3bo$55b2ob2o$53b2o2bo2b2o$52bo2b2ob2o2bo$53bo2bobo
2bo$54b2o3b2o!

(quick edit, added a more preferable stator variant for the second pattern)

[This is the edit that appears as "edited 2 times"] Alright, I missed a reduction (minus 2 cells), here it is, applied to Scorbie's reduction:

Code: Select all

x = 69, y = 81, rule = B3/S23
35bob2o$35b2obo$33b2o7bo$32bo2b3o3bobo$32bo2bo2bobobo$31b2obob2ob3o$
33bob2o3bo$31b2o4bo23b2o$30bo2b4ob5o17bobo$31b2o3bo4bo18bo$33bo2bo3bob
o10bo4b2ob4o$33b3ob4o2bo2bo2bo2bobo2bobo4bo$38bob2ob4o2b4obo2bobob2o2b
2o$33b2ob2o3bo5b2o5bob2obo3b2o2bo$33b2obo3bob2obo2bobob2obo3bob2o2b2o$
36bob2o2bob3o2bobobobob2o4bo$36bobobobo8bobo2bo2b3obob2o$33b2obo4bob4o
3bo3b2o2bo2b2ob2o2bo$33b2obo6bo3bo2bo4bob2o8b2o$36bobo4bo2bobob2obo2bo
$36bo2b2ob2obo2bo2bob2obo$37bo5bobo5bo2bob2o$35bobobo3bobob4obo4bo$34b
obob2o2b2obob2obobo3b2o$34bobo9bobo3bobob2o6b3o$32b3obob7obo5bobob2o5b
o2bo$3b2o2b2o22bo4bobo3bo2bobobo2bobob2o5b3o$b3obo2bo2bobo3b2o12bob2ob
o2bo4bo2bob3o2bo2bo$o4b2o4b2obo2bo14b2o2bobobo4b2obo3bobob2o$ob2o3b4o
3bo4bo15bobo2bo7bob2o2bobo$b2ob2o6b2ob4obo11b4o3b2o4b3obobobo3bo$4bobo
b3o2bo4bobo7b2obo4bo3bo3bo2bobo3b4o2b2obo2bo$b4obo4bob2o2b2ob2o7bob2o
2b3o6b2obob4o3bo5b3o$bo2bobobob3o3bobobo4bo3bobobobo2bo2bobobob2o2bobo
bo2bobo$3bo2bobobob2o3b2o3bo5b2obobobo3bob7o4b2o2b2ob2o$2b2obo2bobo2bo
4bobo2bob2ob2o15bobo4b2o2b2o2b2o6bo$3bob2obobo5bobob2obo6bo3b2ob2o2b2o
4bo4b3o5b2o4bobo$3bo2bob2ob6obo2bob2ob6o4bo4b2o11bobo10b2o$4b2o5bo5bob
o2bo10b2o5b3o2b3o2b2ob5obobo$11bob2o2bob2obob2o3b3obo5bo2bo3b2obo3bo3b
obobo$12bobo3bo2bobobo5bobo4bob2o7bobobobo6bo$19bobobo2b3obo2b2o3bo10b
o2bobob4obo$18b2obobo4bobobo4b2o10bo4bo6bo$22bo2bo3bo2bo13bo4b3obob5o$
23b2obo5b2o11b4o4bobobo3bo$26bo2bo15bob2ob3o2bobob5o$26bobobo13b3o6b2o
3b2o2b2o$19b2o2b2o2bo2bo13b2o4b3o$19bo2bobobo3b2o9b2o4bobo2bo3b5obo$
20bob2ob5o10bobo3b3o2bo3bo2bob2o$17b3o3bo6b2o8bo11b4o$16bo3b2obo3b2o2b
o9b4ob6o8b4o$17bo2bob4obob2o7b3o4bo5bobo6bo3bo$18bobob2obobobo8bo2bo2b
5o3bobo5bobobo2bo$19b2o3bo2bobo9bobobobobobo3bo7b2o2b3o$21bo5bob2o9bo
2bobo3bo4b3o2bo3b2o$19b7obo2bo7bobobo2bobob2o5bo2b4o2bo$18bo4bo4bo9b2o
bob3ob2o2bo6bo4bobo$17bobobobob3o13bobo2bo3bo6b2obobobo$19bo2bo2bo15bo
b3o2b2o6bobobobo$16b2obo2bo2bo14b2o4b2o7bob2o4bo$19bobobob2o14bob2o2bo
7b2o3b4o$18bo2b4o2bo13bo2bobo6b2o$19b2o4b2o15bo2bo6bo2b2o2b3o$21b4o18b
2o6bobobo6bo$21bo2bo27bo2bo4b2o2bo$53b2o6bob2o$59bobobo$58b2obo2bo$58b
o3b3o$57bo2b2o$55bobobo2bo$53b3ob2o2b2o$52bo4bo$52b4obo$56bobo$54bo3b
3o$53bob2o4bo$53bo4b3o$54b3obo$56b2o!

note: I changed stators in some parts, without any real reduction on those parts, just for neatness preference

[Scorbie]

A modest reduction on the bottom of the p18 gun:

Code: Select all

x = 69, y = 81, rule = B3/S23
35bob2o$35b2obo$33b2o7bo$32bo2b3o3bobo$32bo2bo2bobobo$31b2obob2ob3o$
33bob2o3bo$31b2o4bo23b2o$30bo2b4ob5o17bobo$31b2o3bo4bo18bo$33bo2bo3bob
o10bo4b2ob4o$33b3ob4o2bo2bo2bo2bobo2bobo4bo$38bob2ob4o2b4obo2bobob2o2b
2o$33b2ob2o3bo5b2o5b2obobo3b2o2bo$33b2obo3bob2obo2bobob2o3bobob2o2b2o$
36bob2o2bob3o2bobobob2obo4bo$36bobobobo8bobo2bobob2obob2o$33b2obo4bob
4o3bo3b2o3bob2ob2o2bo$33b2obo6bo3bo2bo4bob2o8b2o$36bobo4bo2bobob2obo2b
o$36bo2b2ob2obo2bo2bob2obo$37bo5bobo5bo2bob2o$35bobobo3bobob4obo4bo$
34bobob2o2b2obob2obobo3b2o$34bobo9bobo3bobob2o6b3o$32b3obob7obo5bobob
2o5bo2bo$3b2o2b2o22bo4bobo3bo2bobobo2bobob2o5b3o$b3obo2bo2bobo3b2o12bo
b2obo2bo4bo2bob3o2bo2bo$o4b2o4b2obo2bo14b2o2bobobo4b2obo3bobob2o$ob2o
3b4o3bo4bo15bobo2bo7bob2o2bobo$b2ob2o6b2ob4obo11b4o3b2o4b3obobobo3bo$
4bobob3o2bo4bobo7b2obo4bo3bo3bo2bobo3b4o2b2obo2bo$b4obo4bob2o2b2ob2o7b
ob2o2b3o6b2obob4o3bo5b3o$bo2bobobob3o3bobobo4bo3bobobobo2bo2bobobob2o
2bobobo2bobo$2b2o2bobobob2o3b2o3bo5b2obobobo3bob7o4b2o2b2ob2o$3bobo2bo
bo2bo4bobo2bob2ob2o15bobo4b2o2b2o2b2o6bo$2bo2b2obobo5bobob2obo6bo3b2ob
2o2b2o4bo4b3o5b2o4bobo$2b2o2bob2ob6obo2bob2ob6o4bo4b2o11bobo10b2o$6bo
4bo5bobo2bo10b2o5b3o2b3o2b2ob5obobo$5b2o4bob2o2bob2obob2o3b3obo5bo2bo
3b2obo3bo3bobobo$12bobo3bo2bobobo5bobo4bob2o7bobobobo6bo$19bobobo2b3ob
o2b2o3bo10bo2bobob4obo$18b2obobo4bobobo4b2o10bo4bo6bo$22bo2bo3bo2bo13b
o4b3obob5o$23b2obo5b2o11b4o4bobobo3bo$26bo2bo15bob2ob3o2bobob5o$26bobo
bo13b3o6b2o3b2o2b2o$19b2o2b2o2bo2bo13b2o4b3o$19bo2bobobo3b2o9b2o4bobo
2bo3b5obo$20bob2ob5o10bobo3b3o2bo3bo2bob2o$17b3o3bo6b2o8bo11b4o$16bo3b
2obo3b2o2bo9b4ob6o8b4o$17bo2bob4obob2o7b3o4bo5bobo6bo3bo$18bobob2obobo
bo8bo2bo2b5o3bobo5bobobo2bo$19b2o3bo2bobo9bobobobobobo3bo7b2o2b3o$21bo
5bob2o9bo2bobo3bo4b3o2bo3b2o$19b7obo2bo7bobobo2bobob2o5bo2b4o2bo$18bo
4bo4bo9b2obob3ob2o2bo6bo4bobo$17bobobobob3o13bobo2bo3bo6b2obobobo$19bo
2bo2bo15bob3o2b2o6bobobobo$16b2obo2bo2bo14b2o4b2o7bob2o4bo$19bobobob2o
14bob2o2bo7b2o3b4o$18bo2b4o2bo13bo2bobo6b2o$19b2o4b2o15bo2bo6bo2b2o2b
3o$21b4o18b2o6bobobo6bo$21bo2bo27bo2bo4b2obo$53b2o6bobo$59bobob2o$58b
2obo3bo$58bo3b3o$57bo2b2o$55bobobo2bo$53b3ob2o2b2o$52bo4bo$52bob2obo$
53bo2bobo$54bo3b3o$55b2o4bo$58b3o$53b4obo$53bo2b2o!

[affamatodidio]

Here's my reduction:

Code: Select all

x = 51, y = 81, rule = B3/S23
17bob2o$17b2obo$15b2o7bo$14bo2b3o3bobo$14bo2bo2bobobo$13b2obob2ob3o$15b
ob2o3bo$13b2o4bo23b2o$12bo2b4ob5o17bobo$13b2o3bo4bo18bo$15bo2bo3bobo10b
o4b2ob4o$15b3ob4o2bo2bo2bo2bobo2bobo4bo$20bob2ob4o2b4obo2bobob2o2b2o$
15b2ob2o3bo5b2o5b2obobo3b2o2bo$15b2obo3bob2obo2bobob2o3bobob2o2b2o$18b
ob2o2bob3o2bobobob2obo4bo$18bobobobo8bobo2bobob2obob2o$15b2obo4bob4o3b
o3b2o3bob2ob2o2bo$15b2obo6bo3bo2bo4bob2o8b2o$18bobo4bo2bobob2obo2bo$18b
o2b2ob2obo2bo2bob2obo$19bo5bobo5bo2bob2o$17bobobo3bobob4obo4bo$16bobo
b2o2b2obob2obobo3b2o$16bobo9bobo3bobob2o6b3o$14b3obob7obo5bobob2o5bo2b
o$13bo4bobo3bo2bobobo2bobob2o5b3o$13bob2obo2bo4bo2bob3o2bo2bo$14b2o2b
obobo4b2obo3bobob2o$17bobo2bo7bob2o2bobo$14b4o3b2o4b3obobobo3bo$10b2o
bo4bo3bo3bo2bobo3b4o2b2obo2bo$11bob2o2b3o6b2obob4o3bo5b3o$9bobobobobo
2bo2bobobob2o2bobobo2bobo$9b3obobobo3bob7o4b2o2b2ob2o$2o6bob2o15bobo4b
2o2b2o2b2o$o2b2o3bobobo3b2ob2o2b2o4bo4b3o5b2o$bobo2bobo2b3o4bo4b2o11b
obo$2obob2o2bo5b2o5b3o2b3o2b2ob5obobo$3bo2bobob4obo5bo2bo3b2obo3bo3bo
bobo$3b2o2b2o4bobo4bob2o7bobobobo6bo$8bo3bo2b2o3bo10bo2bobob4obo$12bo
bo4b2o10bo4bo6bo$9b2obobo13bo4b3obob5o$9b2obob2o11b4o4bobobo3bo$7bo4b
obo12bob2ob3o2bobob5o$6bob3obobo11b3o6b2o3b2o2b2o$6bobob3o2b2o9b2o4b3o
$3b2obo2bo3bobo7b2o4bobo2bo3b5obo$4bobo2bobobo2bo5bobo3b3o2bo3bo2bob2o
$3bo3b3ob2o2b2o5bo11b4o$4b3o3bo12b4ob6o8b4o$7bo3b2o7b3o4bo5bobo6bo3bo
$6bob2obobo6bo2bo2b5o3bobo5bobobo2bo$6bob3o2bo7bobobobobobo3bo7b2o2b3o
$5b2o4b2ob2o6bo2bobo3bo4b3o2bo3b2o$5bo2b3obo3bo3bobobo2bobob2o5bo2b4o
2bo$6b2o2bobob2o4b2obob3ob2o2bo6bo4bobo$8bo4bo9bobo2bo3bo6b2obobobo$8b
o2bobo9bob3o2b2o6bobobobo$6bobobo2bob2o5b2o4b2o7bob2o4bo$2b2obob2ob4o
2bo6bob2o2bo7b2o3b4o$2bob2o8b2o7bo2bobo6b2o$6b3o3b2o10bo2bo6bo2b2o2b3o
$6bo6bo11b2o6bobobo6bo$3b2obob2o3bobo18bo2bo4b2obo$3bob2obo5b2o19b2o6b
obo$8bo32bobob2o$8b2o30b2obo3bo$40bo3b3o$39bo2b2o$37bobobo2bo$35b3ob2o
2b2o$34bo4bo$34bob2obo$35bo2bobo$36bo3b3o$37b2o4bo$40b3o$35b4obo$35bo
2b2o!

[Period1GliderGun]

Here's my reduction:

One less column on the left:

Code: Select all

x = 50, y = 81, rule = B3/S23
16bob2o$16b2obo$14b2o7bo$13bo2b3o3bobo$13bo2bo2bobobo$12b2obob2ob3o$14b
ob2o3bo$12b2o4bo23b2o$11bo2b4ob5o17bobo$12b2o3bo4bo18bo$14bo2bo3bobo10b
o4b2ob4o$14b3ob4o2bo2bo2bo2bobo2bobo4bo$19bob2ob4o2b4obo2bobob2o2b2o$
14b2ob2o3bo5b2o5b2obobo3b2o2bo$14b2obo3bob2obo2bobob2o3bobob2o2b2o$17b
ob2o2bob3o2bobobob2obo4bo$17bobobobo8bobo2bobob2obob2o$14b2obo4bob4o3b
o3b2o3bob2ob2o2bo$14b2obo6bo3bo2bo4bob2o8b2o$17bobo4bo2bobob2obo2bo$17b
o2b2ob2obo2bo2bob2obo$18bo5bobo5bo2bob2o$16bobobo3bobob4obo4bo$15bobo
b2o2b2obob2obobo3b2o$15bobo9bobo3bobob2o6b3o$13b3obob7obo5bobob2o5bo2b
o$12bo4bobo3bo2bobobo2bobob2o5b3o$12bob2obo2bo4bo2bob3o2bo2bo$13b2o2b
obobo4b2obo3bobob2o$16bobo2bo7bob2o2bobo$13b4o3b2o4b3obobobo3bo$9b2ob
o4bo3bo3bo2bobo3b4o2b2obo2bo$10bob2o2b3o6b2obob4o3bo5b3o$8bobobobobo2b
o2bobobob2o2bobobo2bobo$8b3obobobo3bob7o4b2o2b2ob2o$b2o4bob2o15bobo4b
2o2b2o2b2o$o2bo3bobobo3b2ob2o2b2o4bo4b3o5b2o$b2o2bobo2b3o4bo4b2o11bob
o$2bob2o2bo5b2o5b3o2b3o2b2ob5obobo$2bo2bobob4obo5bo2bo3b2obo3bo3bobob
o$3bo2b2o4bobo4bob2o7bobobobo6bo$3o4bo3bo2b2o3bo10bo2bobob4obo$o10bob
o4b2o10bo4bo6bo$8b2obobo13bo4b3obob5o$8b2obob2o11b4o4bobobo3bo$6bo4bo
bo12bob2ob3o2bobob5o$5bob3obobo11b3o6b2o3b2o2b2o$5bobob3o2b2o9b2o4b3o
$2b2obo2bo3bobo7b2o4bobo2bo3b5obo$3bobo2bobobo2bo5bobo3b3o2bo3bo2bob2o
$2bo3b3ob2o2b2o5bo11b4o$3b3o3bo12b4ob6o8b4o$6bo3b2o7b3o4bo5bobo6bo3bo
$5bob2obobo6bo2bo2b5o3bobo5bobobo2bo$5bob3o2bo7bobobobobobo3bo7b2o2b3o
$4b2o4b2ob2o6bo2bobo3bo4b3o2bo3b2o$4bo2b3obo3bo3bobobo2bobob2o5bo2b4o
2bo$5b2o2bobob2o4b2obob3ob2o2bo6bo4bobo$7bo4bo9bobo2bo3bo6b2obobobo$7b
o2bobo9bob3o2b2o6bobobobo$5bobobo2bob2o5b2o4b2o7bob2o4bo$b2obob2ob4o2b
o6bob2o2bo7b2o3b4o$bob2o8b2o7bo2bobo6b2o$5b3o3b2o10bo2bo6bo2b2o2b3o$5b
o6bo11b2o6bobobo6bo$2b2obob2o3bobo18bo2bo4b2obo$2bob2obo5b2o19b2o6bob
o$7bo32bobob2o$7b2o30b2obo3bo$39bo3b3o$38bo2b2o$36bobobo2bo$34b3ob2o2b
2o$33bo4bo$33bob2obo$34bo2bobo$35bo3b3o$36b2o4bo$39b3o$34b4obo$34bo2b
2o!

[JP21]

One less column on the left:

Plus reduced population:

Code: Select all

x = 50, y = 81, rule = B3/S23
16bob2o$16b2obo$14b2o7bo$13bo2b3o3bobo$13bo2bo2bobobo$12b2obob2ob3o$
14bob2o3bo$12b2o4bo23b2o$11bo2b4ob5o17bobo$12b2o3bo4bo18bo$14bo2bo3bob
o10bo4b2ob4o$14b3ob4o2bo2bo2bo2bobo2bobo4bo$19bob2ob4o2b4obo2bobob2o2b
2o$14b2ob2o3bo5b2o5bob2obo3b2o2bo$14b2obo3bob2obo2bobob2obo3bob2o2b2o$
17bob2o2bob3o2bobobobob2o4bo$17bobobobo8bobo2bo2b3obob2o$14b2obo4bob4o
3bo3b2o2bo2b2ob2o2bo$14b2obo6bo3bo2bo4bob2o8b2o$17bobo4bo2bobob2obo2bo
$17bo2b2ob2obo2bo2bob2obo$18bo5bobo5bo2bob2o$16bobobo3bobob4obo4bo$15b
obob2o2b2obob2obobo3b2o$15bobo9bobo3bobob2o6b3o$13b3obob7obo5bobob2o5b
o2bo$12bo4bobo3bo2bobobo2bobob2o5b3o$12bob2obo2bo4bo2bob3o2bo2bo$13b2o
2bobobo4b2obo3bobob2o$16bobo2bo7bob2o2bobo$13b4o3b2o4b3obobobo3bo$9b2o
bo4bo3bo3bo2bobo3b4o2b2obo2bo$10bob2o2b3o6b2obob4o3bo5b3o$8bobobobobo
2bo2bobobob2o2bobobo2bobo$8b3obobobo3bob7o4b2o2b2ob2o$b2o4bob2o15bobo
4b2o2b2o2b2o6bo$o2bo3bobobo3b2ob2o2b2o4bo4b3o5b2o4bobo$b2o2bobo2b3o4bo
4b2o11bobo10b2o$2bob2o2bo5b2o5b3o2b3o2b2ob5obobo$2bo2bobob4obo5bo2bo3b
2obo3bo3bobobo$3bo2b2o4bobo4bob2o7bobobobo6bo$3o4bo3bo2b2o3bo10bo2bobo
b4obo$o10bobo4b2o10bo4bo6bo$8b2obobo13bo4b3obob5o$8b2obob2o11b4o4bobob
o3bo$6bo4bobo12bob2ob3o2bobob5o$5bob3obobo11b3o6b2o3b2o2b2o$5bobob3ob
2o10b2o4b3o$4b2o2bo3bo9b2o4bobo2bo3b5obo$5bo2bobobo8bobo3b3o2bo3bo2bob
2o$3bo2b3ob2o9bo11b4o$3b3o3bo12b4ob6o8b4o$6bo3b2o7b3o4bo5bobo6bo3bo$5b
ob2obobo6bo2bo2b5o3bobo5bobobo2bo$5bob3o2bo7bobobobobobo3bo7b2o2b3o$4b
2o4b2ob2o6bo2bobo3bo4b3o2bo3b2o$4bo2b3obobo5bobobo2bobob2o5bo2b4o2bo$
5b2o2bobo2bo4b2obob3ob2o2bo6bo4bobo$7bo4bobo7bobo2bo3bo6b2obobobo$7bo
2bobob2o6bob3o2b2o6bobobobo$4b2obobo2bo8b2o4b2o7bob2o4bo$4bob2ob4o9bob
2o2bo7b2o3b4o$22bo2bobo6b2o$5b3o3b2o10bo2bo6bo2b2o2b3o$5bo6bo11b2o6bob
obo6bo$3bobob2o3bobo18bo2bo4b2o2bo$3b2o2bo5b2o19b2o6bob2o$7bobo30bobob
o$8b2o29b2obo2bo$39bo3b3o$38bo2b2o$36bobobo2bo$34b3ob2o2b2o$33bo4bo$
33b4obo$37bobo$35bo3b3o$34bob2o4bo$34bo4b3o$35b3obo$37b2o!

[confocaloid]

Here's my reduction:

One less column on the left: [...]

Looks like someone already submitted a reduced version of guntrue_18 in the last update ( https://gitlab.com/hatsya/open-source/c ... 9545451732 ):

Code: Select all

#CSYNTH guntrue_18 costs 4050 cells.
#C period 18 fullperiod 18 bbox 81 by 50
#CLL state-numbering golly
x = 81, y = 50, rule = LifeHistory
36.A4.2A$35.A.A3.A19.2A$35.A.3A.A6.A.A10.A3.2A$36.A3.A7.2A.A10.A2.
A$38.A12.A3.2A4.2A3.A$37.3A6.4A.A.3A.A2.A2.4A$34.2B4.AB3.A4.A.A4.A
3.A.A$34.B3AB3A2.B.2A2BA.B2ABA.4A.A.4A$32.B2A3.A4B2A.A.3A2B2A.A.B
3.3BA2.A$31.A.B3A2BA3B2AB2A2B.A.BAB2A2B2A3B$31.5A.A.A.B5.A.2A.2A.A
2.BA.A.B$8.A27.2A.A.7A2.A.A2.3A3.A.A$5.A.A.A16.2A3.4A.BA.2A7.2A3.
2A3.4A.3A$3.3A.A.A15.A2.A.A.A4B5.5A8.A.A4.A3.A$2.A3.A.A.2A.2A2.2A
6.A.2A.A.B2A3B4A2.A2.2A.A4.A.A2.A.A2.2A$2.A.BAB.A2.A.2A2.2A4.3A.A
2.A.B.B.A.A2.A5.A.2A5.A3.2A$2A.2A.A.A2.A10.A6.2A.3ABA$.A.A.2A.3AB.
8A2.6A2.2A2.2BA$A2.A.A.A3.A.A2.B.B2.2A2.B3.A2BA3BAB4.A$2A2.A3BA2B
2A2B2A2BAB2.AB2ABAB.B.A2BA3.3A9.2A2.2A$5.AB.A.BA3BA4BAB2ABA.A2BAB.
BA2B2.A12.A.A2.A$4.3A.A.3ABABA2B.AB2.BA2B4A.3B2.ABA8.2A.A2.2A3.A$
3.A.AB.2A.B2A3.A7.A.6B2A.3A.A7.A2.A.2A2.6A$2.A.A2.BABA.B.3A3.A2.A.
2A4.3BAB4A8.2A.A.B.BA6.A$3.A7.2A.A2.7A.A6.B2A4B8.3B.A2B2AB3ABA2.A$
12.A2.A.A7.A.A3.2ABA.4B6.2A3BABAB2.A.A.2A.A$12.A.2A.A.B4A2.A.A.A.
4AB.AB3.B4A4B6A.A3.A$11.2A2.A.A.AB3.2A2.A.A.2BA3B2A3.2ABAB.A.ABAB
3.A.A.A$13.A4.A.2B2A2.2A2.7AB2A.3B2A2B2A.A.2AB2A2.2A$13.2A4.2A.3AB
2.2A3.A5B.4B2AB2.A.A.A3.A.A$11.2A2.A4.B.A.B.2A2.3A3B.2B4A5BA2.A2.
3A2.A$12.A.A2.3A2.2A2B.A.A2.A.3B.A.B.3BA.A3.A4.A.A$12.A.B2AB.3A3.B
.A.2A.2A4BABA2BA.A.A.A.2A4.A6.A$11.2A.A2.2B3.5ABA3.AB3A2B2.A.A.A.
2A.A2.A9.A.A7.2A$10.A3.3A2.2A.B2.B4.2A.4A.3A2.2A.A3.A.A.A7.A.A.A5.
A2.A3.2A$11.3A3.A2.2A2B6A.A.3B3A2.2A3.A3.A2.A.A6.A3.A5.A.A.A2.A$
13.A.A.2A3.3B.B4.A.A2B.BA.A2.3A3.2A4.A4.2A.3A5.2A.A2.A.A$15.2A2.3A
.4A.2AB2A.2AB2AB.A6.A6.2A2.A.A.A5.2B2.2BABA.2A$11.4A3.A2.8A.A3B2A
2B2A.A.3A2.A7.B.ABA2B6.B5A2.B2.A$10.A4.2A.A3.6B2.3BA6B.A.A2.A.2A6.
B4AB.2B.2B2AB.A2B2A.2A$10.5A2.A4.6B3.A2BAB.B2ABA.AB2A.A.B.3B2A.2B.
2BA3B2A.BA4.A.A$8.2A2.3B.A5.4B5.AB4AB.4BABA.B2AB3AB.AB2ABA.A.A2.B.
A5.A.A$7.A2.ABABA.2A3.7B3.3B.2AB2AB5A3BABA2BA.A2.B.A.A.4A.A.A4.A$
7.2A.A.ABAB.A13B2A5.2BA4B2ABA2.A.2A.A.2A.A2.A4.A.2A$10.A2.A.2A8B2A
5BAB5.5B.2AB3.A.B.A.A2.2A3.3A.A$10.2A.A.B.A6BABA5BA2B6.B3.3B4.2A.A
2.A8.A.A$12.A.A.2A3.3BABA4BA4B18.A.2A10.A$12.A.A.A4.3B2A5B2.3BA17.
A$13.A4.A3.6B6.3BA15.2A$17.2A4.3B9.3AB!

Additionally, as far as I know the Gun Discussion Thread is intended for new gun mechanisms and designs. Reductions of existing designs should be posted in Execution of Old Guns by Variable-Speed Firing Squad instead.

[johamwit]

...

Code: Select all

x = 0, y = 0, rule = LifeHistory
2$38.B4.2B$37.B.B3.B19.2B$37.B.3B.B6.B.B10.B3.2B$38.B3.B7.2B.B10.B2.B
$40.B12.B3.2B4.2B3.B$39.3B6.4B.B.3B.B2.B2.4B$36.2D4.2D3.B4.B.B4.B3.B.
B$36.2D2B4D2.D.B4D.4DB.4B.D.4B$34.3D3.7D.D.7D.D.D3.3DB2.B$33.B.3DB13D
.D.12D$33.2B3D.D.B.D5.D.2B.2B.D2.2D.D.D$10.B27.DB.B.7B2.B.B2.3B3.B.B$
7.B.B.B16.2B3.2B2D.DB.2B7.2B3.2B3.4B.3B$5.3B.B.B15.B2.B.B.5D5.5B8.B.B
4.B3.B$4.B3.D.B.2B.2B2.2B6.B.2B.B.6D4B2.B2.2B.B4.B.B2.B.B2.2B$4.B.3D.
B2.B.2B2.2B4.3B.B2.B.D.D.D.B2.B5.B.2B5.B3.2B$2.2B.BD.B.B2.B10.B6.2B.
5D$3.B.B.2D.2B2D.8B2.6B2.2D2.3D$2.B2.B.B.D3.D.B2.D.D2.2B2.D3.9D4.B$2.
2B2.B3DB2DB9D2.B6D.D.4D3.3B9.2B2.2B$7.2D.B.15DB.5D.4D2.B12.B.B2.B$6.
2DB.B.9D.2D2.DB6D.3D2.2DB8.2B.B2.2B3.B$5.B.2D.BD.3D3.B7.D.8D.3D.B7.B
2.B.2B2.6B$4.B.B2.4D.D.3B3.B2.B.2D4.8DB8.DB.B.D.DB6.B$5.B7.2B.B2.7B.B
6.7D8.3D.3DB6DB2.B$14.B2.B.B7.B.B3.B3D.4D6.9D2.D.B.2B.B$14.B.2B.B.D4B
2.B.B.B.5D.2D3.13D2B.B3.B$13.2B2.B.B.2D3.2B2.B.B.8D3.5D.D.4D3.B.B.B$
15.B4.B.4D2.2B2.2B6DBD.8DB.B.B2D2B2.2B$15.2B4.BD.2DBD2.2B3.6D.7D2.B.B
.B3.B.B$13.2B2.B4.D.D.D.2B2.2B4D.2DB8DB2.B2.3B2.B$14.B.B2.B2D2.2B2D.B
.B2.D.3D.D.D.4D.D3.B4.B.B$14.B.2DBD.3B3.D.D.2B.12D.B.B.B.2B4.B6.B$13.
2B.D2.2D3.4B2DB3.7D2.B.B.B.2B.B2.B9.B.B7.2B$12.B3.3B2.2B.D2.D4.2B.4D.
D2B2.2B.B3.B.B.B7.B.B.B5.B2.B3.2B$13.3B3.B2.B5D4B.B.6D2.2B3.B3.B2.B.B
6.B3.B5.B.B.B2.B$15.B.B.2B3.3D.D4.D.3D.2D.B2.3B3.2B4.B4.2B.3B5.2B.B2.
B.B$17.2B2.3B.4D.B4D.6D.B6.B6.2B2.D.D.B5.2D2.2DB2D.2B$13.4B3.B2.B6DB.
10D.B.3B2.B7.D.5D6.3DB2D2.D2.B$12.B4.2B.B3.6D2.10D.B.B2.B.2B6.6D.2D.
5D.4DB.2B$12.B3DB2.B4.6D3.5D.5D.3DB.D.D.5D.2D.8D.DB4.B.B$10.2B2.3D.B
5.4D5.7D.7D.8D.B5D.B.D2.D.B5.B.B$9.B2.B4D.2B3.7D3.3D.DB18D.B2.D.B.B.
4B.B.B4.B$9.2B.B.4D.16D5.11D2.B.DB.B.2B.B2.B4.B.2B$12.B2.B.19D5.5D.3D
3.B.D.B.B2.2B3.3B.B$12.2B.B.D.18D6.D3.3D4.2B.B2.B8.B.B$14.B.B.2B3.15D
18.B.2B10.B$14.B.B.B4.10D2.4D17.B$15.B4.B3.6D6.4D15.2B$19.2B4.3D9.4D$
38.4D$39.4D$40.4D$41.4D$42.4D$43.4D!
#C [[ COLOR BACKGROUND BurlyWood WIDTH 600 ]]
#C [[ LABELSIZE 10 LABELSHADOW OFF LABELZOOMRANGE 2 7 LABEL 75 25 1 "A" ]]
#C [[ ARROWSIZE 1 0.1 ARROWSHADOW OFF ARROWALPHA 1.0 ARROWZOOMRANGE 2 7 ARROW 70 25 35 41 1 ]]
#C I really need a LifeViewer scripting tutorial :-)

I always think, when I see these quivering blobs, that there must be a way to simplify those branches. I can't even imagine the math, but this tree is yelling to be pruned. Imagine a cut at A.

BTW, It's nice to have agreed on the standard output of the guns being SE. It would be useful too to agree in the preferred display of the pattern. In rectangular patterns, we would choose between a "standard monitor" aspect ratio, being wider than tall, or a - ehem - modern, cellular display, taller than wide.

[confocaloid]

[...] BTW, It's nice to have agreed on the standard output of the guns being SE. It would be useful too to agree in the preferred display of the pattern. In rectangular patterns, we would choose between a "standard monitor" aspect ratio, being wider than tall, or a - ehem - modern, cellular display, taller than wide.

I think people interested in glider guns would need to get a real computer anyway. Which would mean "wider than tall" is better than "taller than wide".

Both the "wider than tall" choice and the output gliders going to SE match existing conventions for glider guns. Quoting from readme.txt (note in particular the definition of canonical form of a gun):

This is an updated version of Dieter and Peter's Gun Collection for Conway's Game of Life, compiled by Jason Summers.

Nearly all of the guns from the original collection (pre-1999) were built by Dietrich Leithner and/or Peter Rott. Most of the more recent guns and improvements are by David Eppstein, Scot Ellison, Dave Greene, and Karel Suhajda. The Life technology used in the guns was developed by many different people.
[...]
The goal of this collection is to include the smallest glider gun for each period. Size is measured by the area of the bounding rectangle of the gun. Every cell that is a part of the rotor or stator of the gun must be included in the bounding rectangle, excluding only the output gliders. It should be noted that the population of the gun is irrelevant, and it is often easy to reduce the population at a cost of increasing the bounding rectangle.
[...]
Why measure by bounding box area, rather than some other measure like cell population? Well, it wasn't my idea, but at least bounding box area is unambiguous and easy to measure, and avoids certain loopholes that other measures might have. For example, if you only considered cell population, most of the high-period guns might end up being boring glider relays that are extremely large in area but small in population.
[...]
If you send a large number of guns, it would be helpful if they are in the "canonical form" for this collection, which means:
1) The gliders travel to the lower right.
2) The pattern is in the last phase before a glider leaves the bounding box.
3) The width is greater than or equal to the height.
4) The initial pattern should recur exactly, except for the output gliders (and optional extra cells to mark the bounding box). Do not delete any extraneous sparks, etc.
[...]

[johamwit]

... It would be useful too to agree in the preferred display of the pattern. In rectangular patterns, we would choose between a "standard monitor" aspect ratio, being wider than tall, or a - ehem - modern, cellular display, taller than wide.

...
Quoting from readme.txt (note in particular the definition of canonical form of a gun):

...
3) The width is greater than or equal to the height.
...

Ouch... I didn't do my homework Maybe I'd rather edit my post than writing this... Let the Gods forgive me.
thx!

[WhiteHawk]

Completed p294 wing hassler by adding an absurd amount of additional cleanup compared to the above partial:

Code: Select all

Fun gun that unfortunately gets nowhere near the smallest gun for this period yet.

Code: Select all

x = 76, y = 82, rule = B3/S23
48bo2bo$47bo$46bo5bo$46bo4b2o$47bo$48bo$44bob4o$45bo3bo$47bo3bo$47b4o
bo$48bo$26b2o21bo$27bo9b2o5b2o4bo9bo$27bob2o5bo7bo5bo7b3o$28b2obo7bo9b
o7bo$30bo6b2o6bo2bo8b2o$30bo$30b2o$28bobob2o26b2o$26b3ob2o27bo2bo$25b
o3bo3b2o25bobo$20b2o4b2obobob2o22b4ob2o$15b2o2bo8bobobo24bo3bo2bo$15b
2o2bo8bobo28bobobobo$19b2o8b2o27b2ob2obobo3bo$22bo41bo2bobobo2bo$18bo
bobo41bob2obob4o$17b2o3bo40b2obo2bo$16bo3b2o41bo4bobob3o$16bobobo43bo
bobobo4bo$16bo47bobobob2o2b2o$18b2o44bobob3o$19bo2b2o9bo30bobo4bo$19b
o2b2o8bobo28bo2bobob2o$17b2o14b2o28b2obobo$64bobo2b3o$47bo16bobo4bo$32b
2o12b3o16bo$32bobo10bo2b2o$33bo5b2o4b3obo$39b2o7b2o$26b2o7b2o$26bob3o
4b2o5bo$26b2o2bo10bobo$10bo16b3o12b2o$4bo4bobo16bo$4b3o2bobo$7bobob2o
28b2o14b2o$4b2obobo2bo28bobo8b2o2bo$4bo4bobo30bo9b2o2bo$5b3obobo44b2o
$2o2b2obobobo47bo$o4bobobobo43bobobo$b3obobo4bo41b2o3bo$6bo2bob2o40bo
3b2o$b4obob2obo41bobobo$bo2bobobo2bo41bo$5bo3bobob2ob2o27b2o8b2o$10bo
bobobo28bobo8bo2b2o$11bo2bo3bo24bobobo8bo2b2o$12b2ob4o22b2obobob2o4b2o
$13bobo25b2o3bo3bo$13bo2bo27b2ob3o$14b2o26b2obobo$44b2o$45bo$27bo2bo6b
2o6bo$26bo9bo7bob2o$25bo5bo7bo5b2obo$25bo4b2o5b2o9bo$26bo21b2o$27bo$23b
ob4o$24bo3bo$26bo3bo$26b4obo$27bo$28bo$23b2o4bo$23bo5bo$28bo$24bo2bo!

[Period1GliderGun]

29*32 p24 gun based on a p24 pi hassler by iNoMed and the p3 B-G catalyst:

Code: Select all

x = 29, y = 32, rule = B3/S23
$6bo17bo$2b2o2b2ob3o7b3ob2o2b2o$2b2o4b4o7b4o4b2o$6b2o15b2o3$7b2o13b2o
$6bo17bo$6bo3bo9bo3bo$2b2o3bo3bo7bo3bo3b2o$3bo5b2o9b2o5bo$3bobo19bobo
$4b2o3b2o9b2o3b2o$8bobo9bobo$7b2o13b2o$8b2o11b2o$9bo11bo$10b3o5b3o$11b
2o5b2o$12bo5bo$5b2o$5bo15b2o$2b2obo8bo6bo$2bo2bob2o6bo6b3o$3b2obo2bo3b
3o8bo$6bob2o$3b2obo$2bobobo$bo2bobo2b2o9bo$o3bo3bo2bo9bo$b2o6b2o8b3o!

[PiSpaceships]

29*32 p24 gun based on a p24 pi hassler by iNoMed and the p3 B-G catalyst:

Code: Select all

x = 29, y = 32, rule = B3/S23
$6bo17bo$2b2o2b2ob3o7b3ob2o2b2o$2b2o4b4o7b4o4b2o$6b2o15b2o3$7b2o13b2o
$6bo17bo$6bo3bo9bo3bo$2b2o3bo3bo7bo3bo3b2o$3bo5b2o9b2o5bo$3bobo19bobo
$4b2o3b2o9b2o3b2o$8bobo9bobo$7b2o13b2o$8b2o11b2o$9bo11bo$10b3o5b3o$11b
2o5b2o$12bo5bo$5b2o$5bo15b2o$2b2obo8bo6bo$2bo2bob2o6bo6b3o$3b2obo2bo3b
3o8bo$6bob2o$3b2obo$2bobobo$bo2bobo2b2o9bo$o3bo3bo2bo9bo$b2o6b2o8b3o!

Is any other p24 gun known?

[Period1GliderGun]

Is any other p24 gun known?

At least three other p24 glider gun mechanisms are known. See the wiki page.

[wwei47]

I noticed that a P87 gun by Kazyan discovered all the way back in 2016 can be monomerized with the P3 block corner:
viewtopic.php?f=2&t=1437&p=27058&hilit= ... ian#p27060

Code: Select all

x = 46, y = 41, rule = B3/S23
10b2o$9bo$13b2o5b2o$6b2o6bo5b2o$6b2o7bo$26bo$25bobo$26bo$21b2o17b2o$
21b2o15bo2bo$38b2obob2o$17b3o20bo2bo$19bo20bo2bo$5b2o11b2o18bob2ob2o$
5b2o29b2o3b2o2bo$32b2o5b3o2b2o$8bo22bo2bo4bo$9bo21bo2bo2bobo$4b2o4bo
26b2o$10bo24bo$10bo19bo5bo$2bo27bo5bo$bob2obo2bo20bo4b2o$bo29bo$2o30bo
2$34b2o$21b2o11b2o$21bo$21b3o2$18b2o$18b2o$14bo$13bobo$14bo$25bo7b2o$
19b2o5bo6b2o$19b2o5b2o$31bo$29b2o!

[WhiteHawk]

I noticed that a P87 gun by Kazyan discovered all the way back in 2016 can be monomerized with the P3 block corner:
viewtopic.php?f=2&t=1437&p=27058&hilit= ... ian#p27060

Code: Select all

BB reduced, but still not close to the smallest P87 gun

Code: Select all

x = 45, y = 41, rule = B3/S23
9b2o$8bo$12b2o5b2o$5b2o6bo5b2o$5b2o7bo$25bo$24bobo$25bo$20b2o17b2o$20b
2o15bo2bo$37b2obob2o$16b3o20bo2bo$18bo20bo2bo$4b2o11b2o18bob2ob2o$4b2o
29b2o3b2o2bo$31b2o5b3o2b2o$7bo22bo2bo4bo$8bo21bo2bo2bobo$3b2o4bo26b2o
$9bo24bo$9bo19bo5bo$bo27bo5bo$ob2obo2bo20bo4b2o$o29bo$31bo$b3o$4b2o27b
2o$4b2o14b2o11b2o$b4o15bo$o5bo13b3o$ob3o2bo$b2o5bo8b2o$5bob2o8b2o$7b2o
4bo$7b3o2bobo$13bo$24bo7b2o$18b2o5bo6b2o$18b2o5b2o$30bo$28b2o!

[Jormungant]

p256 /p512 guns, for octo-hash friendly contraptions:

Code: Select all

x = 273, y = 127, rule = LifeHistory
18$203.2A$204.A$204.A.AB$205.2AB$207.3B$207.4B$208.4B$84.4B121.4B$85.
4B121.4B$86.4B121.4B$87.4B121.4B$88.4B121.4B$89.4B110.2A7.5BA$90.4B
110.A7.4B2AB$91.4B109.A.AB2.6BABC$92.4B109.2AB.11B$90.7B110.3BA9B$88.
9B96.A13.2BABA4BABA$87.11B95.3A11.2BABA5BAB$88.13B95.A10.3BA3B2.B$88.
14B68.2A23.2A10.6B$62.2A.2A20.16B66.B2AB22.5B6.6B$63.A.A20.17B67.3B
12.2A10.4B.10B$27.A30.2A.A5.A.2A15.18B65.B.B12.A2.A5.7BA10B$27.3A27.A
.A.2A3.2A.A.A13.19B65.5B10.A.2A5.5BA5BA6B$30.A5.2A18.A2.B2.BA.AB2.B2.
A12.20B64.6B6.2ABA2.A.2A.2A12BA6B$29.AB5.A.A.2A14.7AB.B7A13.20B63.8B
4.2A2.A.A2.ABAB4A8BA8B.2B$29.A2BA5.A.A7.2B10.3B.B.3B15.21B65.13B.2A.
2A3.BA2BA2B3A4BA10B2A$31.BAB3.BA.A5.6B6.3AB.3B.B3A13.21B63.13B12.3BAB
A3B3A12B2A$30.A.AB.A.B.A6.7B4.A.BA3BA3BAB.A12.19B64.15B12.3BA3B3A2B2A
6B.B.B$30.2A.BA2B2A6.9B3.2A3.BABAB3.2A13.17B65.15B10.B2.6B3A2B2A7B$
33.BA2B9.9B7.BABAB17.18B64.17B.B5.11B2AB2ABA8B$35.A10.10B6.2BA2B.B13.
20B64.36BAB2A11B$28.2A7.2B6.12B6.B.B.5B3.2B2.22B64.13B2A13B2A10BA2B2A
6B$29.A5.5B4.9B.4B2.14B2A3B2A20B63.14B2A13B2A8BA3BAB2A5B$29.A.AB.6B.
5B2A3B4.17B4A3BABA17B64.2AB3.34BA2B4A5B$30.2AB.11BA2BA2B5.15BA2BA2BA
3BA16B64.A2.A4.34B2ABA7B$32.14B2A2B7.14BA4BA3B2A16B63.A.2A5.6B3.B2.2B
2.29B$32.B2A14B9.14BA3BA21B63.A7.6B13.4B2.7B.13B$32.B2A16B8.9B2.B2.3B
.A3B4.13B62.2A6.9B17.6B2.12B$32.12B5.2A9.9B8.3B4.4B4.6B69.4B4.2A3.A
15.3B3.3B2A5B12.2A$33.10B6.A10.9B6.4B4.4B5.7B67.4B5.A3.A.A15.B4.2BA2B
A4BA11.A$33.11B6.3A7.9B6.2A5.4B6.6B67.4B7.4A2.A19.3B2A6BA6.2BA.A$32.
8B.4B7.A7.2B2A3B.B2A5.A4.4B6.6B67.4B5.A6.A.A19.8BA2BA4.B.2A.A$34.5B3.
4B12.3BA2BA2B.BA.A.3A4.4B7.6B66.4B6.4A2.2A.A.2A17.5BA3BAB3.6AB$34.4B
5.4B10.2A3BABAB5.A.A5.4B7.8B64.4B11.A3.A2.A19.4BA2BA2B3.3A5B$35.B8.4B
5.2A.A.AB.2BA4B3.2A5.4B9.6B52.2A10.4B8.4A.3A3.A.A17.4B3A2B5.2B.2B2A$
45.4B5.A.A.2B6.2A9.4B10.7B52.A9.4B9.A2.A.A6.2A12.2A3.10B3.3B3.A$46.4B
3.A2.2AB7.A9.4B9.12B47.A10.4B12.BABAB3A17.A3.11B2.2B5.3A$47.4B3.2A2.B
8.3A5.4B8.B.2B2A9B46.5A5.2A2B5.2A5.2B.2ABA2.A16.A.A15BAB6.A$48.4B4.2A
11.A4.4B8.2A3B2A9B51.A3.ABA2B5.A6.6B2.2A17.2A2.6B2.4BABAB$49.4B3.A16.
4B9.2A14B48.3AB2.3BA3B.BA.A3.9B25.6B3.3BA2BA$50.4B3.3A12.4B11.14B48.A
.2B3.7B.B2A4.10B23.7B2.5B2A2B$51.4B4.A11.4B10.5B2.B2.2B.3B48.4A12B4.
10B11.A12.8B.10B$52.4B14.4B11.2A4.3B5.2A46.2A2.BA3B2A7B4.11B10.3A6.2B
.8B.11B$53.4B12.4B13.A3.B2AB5.A46.A2.3AB.2B2A7B5.10B8.2A3.A4.16B.B.3B
.B2A$54.4B10.4B11.3A5.2A7.3A43.2A.A.B3.10B5.13B4.A2.3A5.6B.8B5.B2.BA.
A$55.4B8.4B12.A18.A46.A8.8B4.15B.B.A.A6.15B12.A$56.4B6.4B79.2A7.9B3.
17B2A5.2B.14B13.2A$57.4B4.4B90.3B2.4B2.5B2AB2A7B2.A3.2A15B$58.4B2.4B
89.5B3.4B.5B2AB2A5B4A.A2.2AB.13B$59.4BC3B90.2A7.19BAB.B.A3.B2.13B$60.
2BC3B92.A8.17B2.B2A.2A5.13B$60.2B3C2B88.3A9.17B4.A2.A6.12B$60.7B88.A
11.5B.8B.B5.A.A7.12B$59.7B2A97.2AB.B4.8B7.A8.12B$60.2B2AB.2A96.A.AB4.
2BA3B.4B15.11B$59.B.ABAB4.B94.A4.4BABA4.4B13.9B$58.2B.BAB99.2A4.2A.A.
A6.4B9.2B.10B$57.BAB2.4B102.ABABA.A.A5.4B7.16B.B4.3B$57.ABA2B2.2A102.
A4.A.A.A5.4B3.28B$56.A3BAB2.A104.4A2.A.A6.33B2A$55.A.2BAB4.3A107.2A8.
32B2A$53.BA2B.A8.A101.2A15.30B.B$52.BA3BA111.2A16.29B$52.2BABA132.25B
$54.BAB133.17B5.B$54.2B134.14B$190.14B$194.3B4.2B$195.B6.2B$201.B2AB$
202.2A!

[WhiteHawk]

p256 /p512 guns, for octo-hash friendly contraptions:

Code: Select all

What benefit would these guns have over the smaller p256 and 512 guns already known?

[confocaloid]

[...] What benefit would these guns have over the smaller p256 and 512 guns already known?

Look how they shoot the output gliders, it should be easy to imagine situations where such guns would work but those from Catagolue wouldn't.

Although the post would belong to the other thread ("Gun discussion thread") which is for general discussion of gun mechanisms and designs.

The forum thread "Execution of Old Guns by Variable-Speed Firing Squad" is for bounding-box reductions of glider guns that are currently maintained on Catagolue (and were maintained in different ways before).

Moved --hotdogPi

[Toroidalcube]

P920 gun i guess

Code: Select all

x = 53, y = 42, rule = B3/S23
3b2o10b2o$2bo2bo8bo2bo$2b3o2b6o2b3o$5b2o6b2o$4bo10bo$4b2obo4bob2o$9b2o
$44bo$42b3o$9b2o30bo$2o7b2o7b2o21b2o$bo16bo28b2o$bobo12bobo28bo$2b2o5b
o6b2o27bobo$8b2o35b2o$8bobo$29b2o$30bo$27bobo$26bo$26b2o2$51b2o$8bo23b
3o2b2o12bo$7bobo22b3o2b2o10bobo$7bobo39b2o$8bo24b2o$12b2o19b2o3b2o$12b
obo12b2o4b2o$14bo12b2o6bo$14b2o18bobo$31b2ob2o$31b2ob2o2$24b2o$25bo$
22b3o$22bo$35b2o$36bo$33b3o$33bo!

Edit: turns out the bipole wasnt even needed

Code: Select all

x = 53, y = 42, rule = B3/S23
3b2o10b2o$2bo2bo8bo2bo$2b3o2b6o2b3o$5b2o6b2o$4bo10bo$4b2obo4bob2o$9b2o
$44bo$42b3o$9b2o30bo$2o7b2o7b2o21b2o$bo16bo28b2o$bobo12bobo28bo$2b2o5b
o6b2o27bobo$8b2o35b2o$8bobo7$51b2o$8bo23b3o2b2o12bo$7bobo22b3o2b2o10bo
bo$7bobo39b2o$8bo24b2o$12b2o19b2o3b2o$12bobo12b2o4b2o$14bo12b2o6bo$14b
2o18bobo$31b2ob2o$31b2ob2o2$24b2o$25bo$22b3o$22bo$35b2o$36bo$33b3o$33b
o!

[PK22]

P920 gun i guess

Welcome to the forums!
It looks like you have rediscovered Period-184 glider gun with stable supports and combined it with a Quinti-Snark. If you look at guntrue_920 on Catagolue, it is very similar to your gun, but it uses a different sparker to achieve a smaller bounding box. Your variant does have a smaller population, but Catagolue only displays the glider gun with the smallest bounding box for its period.

What method did you use to find it?

[Toroidalcube]

P920 gun i guess

Welcome to the forums!
It looks like you have rediscovered Period-184 glider gun with stable supports and combined it with a Quinti-Snark. If you look at guntrue_920 on Catagolue, it is very similar to your gun, but it uses a different sparker to achieve a smaller bounding box. Your variant does have a smaller population, but Catagolue only displays the glider gun with the smallest bounding box for its period.

What method did you use to find it?

Basically i used a p750 gun that i forgot who made but heres the rle anyway

Code: Select all

x = 50, y = 47, rule = B3/S23
15b2o20b2o$15bobob2o16b3o$17bob2o18b2obo5b2o$16b2o21bo2bo5b2o$19b2o18b
2obo$20bo16b3o$20bobo2b3o9b2o$21b2o$10b2o3b2o12bo$13bo15bo6b2o$10bo5bo
12bo5bo2bo$11b2ob2o19bo$12bobo14bo5bo$13bo6bo7bobo4bobo3bo$13bo6b2o5bo
3bo4bobo3bo$3b4o14bo6b3o6bo4bo$2b6o18b2o3b2o5b4o$b8o9bo$2o6b2o8bo$b8o$
2b6o29b2o$3b4o29bobo$13bo22bo$13bo21b2o$12bobo17b2o$11b2ob2o17bob2o$
10bo5bo14bobobobo$13bo17b2o5bo$10b2o3b2o19b3o$35bo$35b2o$18bo$18b3o25b
o$21bo23b3o$10b2o8b2o22b2ob2o$11bo31b3ob3o$8b3o22bo4b2o3b3ob3o$8bo14b
2o9b2o2b2o3b3ob3o$4b2o16bo2bo7b2o8b3ob3o$2bo4bo15b2o19b2ob2o$bo6bo36b
3o$o8bo36bo$o8bo$o8bo25b2o$bo6bo26bo$2bo4bo28b3o$4b2o32bo!

Then i took the mentioned p184 gun and then searched for domino sparkers that are divisible by 184
And replaced the quinti snark's current domino sparker(the pentadecathlon) with a heavyweight emulator

[Toroidalcube]

Also for no reason at all heres a slightly smaller in bounding box one

Code: Select all

x = 49, y = 37, rule = B3/S23
4b2o8b2o$4bo2b6o2bo$5b2o6b2o25bo$2b3o10b3o20b3o$2bo2bobo4bobo2bo19bo$
3b2o4b2o4b2o20b2o$43b2o$43bo$9b2o30bobo$2o7b2o7b2o21b2o$bo16bo$bobo12b
obo$2b2o5bo6b2o$8b2o$8bobo3$47b2o$28b3o2b2o12bo$28b3o2b2o10bobo$45b2o$
29b2o$8bo20b2o3b2o$7bobo13b2o4b2o$7bobo13b2o6bo$8bo21bobo$12b2o13b2ob
2o$12bobo12b2ob2o$14bo$14b2o4b2o$21bo$18b3o$18bo$31b2o$32bo$29b3o$29bo
!

[confocaloid]

There is already a gun of that period with smaller bounding box (guntrue_920), and the forum rule 3a says "Do not post multiple messages consecutively in the same topic. If your message is the most recent one in a topic, simply edit it if you have additional things to add."

Also for no reason at all heres a slightly smaller in bounding box one

Code: Select all

x = 49, y = 38, rule = B3/S23