this spark is known for it's property of making a glider when preturbed by a domino spark .
sparkers that produce this spark
These are not mine.
These can create a glider with a domino spark, notably one of the p21 honey farm hasslers and the 29-cell p45 pi-heptomino hassler .
x = 32, y = 21, rule = B3/S23
18b3o2$13bo6bo4b3o$12bobo2bo6b3o$13bo5bo$16b6o$19b3o$24b3o$25b3o$14bo$
13bobo$5b2o5bo3bo$5bobo4bo3bo13b2o$6b2o2b3ob2ob3o10bo$2b2o6b2obo3b2ob
2o6bobo$bobo6b2ob2o3bob2o6b2o$bo10b3ob2ob3o2b2o$2o13bo3bo4bobo$15bo3bo
5b2o$16bobo$17bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 ]]
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p14(click above to open LifeViewer )
x = 39, y = 15, rule = B3/S23
5b2o8bo$4bobo4bob2obo$2o2bo2b2obobo3bo$obob2obo15b3o6b2obo$2bo2bobobo
2bobobo15b2ob3o$bo2bo2bo3bo4b2o3bo3bo12bo$bobob2o2b2o6bo3bo2bo7b2ob3o$
2o2b2o8bo2bo3bo8bo2bobo$bobob2o2b2o6bo11bob2o$bo2bo2bo3bo4b2o10b2o$2bo
2bobobo2bobobo12bob4o$obob2obo17b2o2b2o3bo$2o2bo2b2obobo3bo7bobo6bo$4b
obo4bob2obo7bo9b3o$5b2o8bo7b2o11bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 ]]
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p24(click above to open LifeViewer )
x = 30, y = 42, rule = B3/S23
20bo$19bobo2$10b3o6bo7b2o$19b2o6bobo$10bo5b5o3b2obobo$12b2o2b2ob2o3bob
obo$5bo13bo6bo$5b2o18b2o$24b3o$14bo4b2o3b3o$14bo3bo2bo2b3o$17bo6b3o$b
2o15bob2o3b2o$o2bo15bo6bo$obo2bo18bobobo$bo3bo18b2obobo$5bo14bo6bobo$
2bo14b2ob2o5b2o$3b2o4b2o6b4obo$10b2obo7bobo$11bo8bo2bo$21b2o$6bo$4bob
2o$7b2o4b2o$15bo$12bo$3b2o7bo3bo$7bo4bo2bobo$5bo8bo2bo$5b2obo6b2o$4b2o
2bo$9bo$4b2ob2o4$3b2o$4bo$b3o$bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 ]]
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Jason's p36 (click above to open LifeViewer )
x = 24, y = 23, rule = B3/S23
8b3o$17bo$5bo2bo6b3o$5bo3bo4bo$14b2o3$19b3o$18b3o2$8b3o$8bobo$8bo2bo$
9bobo$3b2o4b3o$3bo16b2o$2obo17bo$ob2ob2o14bobo$5bo8b2o6b2o$5bobo6b2o2b
2o$6b2o10bobo$20bo$20b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 ]]
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p52(click above to open LifeViewer ) RLE : here Plaintext : here
x = 43, y = 44, rule = B3/S23
2o$obo$b2o2b2o$2b2o2bo$2bo2bo3$4b2o$4b2o$8bo$5bo$6b2obo$9bo18b2o$28bo$
9bo16bobo$7bobo16b2o$7b2o$16b3o$16bobo$8b2o6bobo$7bobo$7bo27b2o$6b2o
27bo$33bobo$24bobo6b2o$24bobo$24b3o$34b2o$15b2o16bobo$14bobo16bo$14bo$
13b2o18bo$33bob2o$37bo$34bo$37b2o$37b2o3$37bo2bo$36bo2b2o$36b2o2b2o$
40bobo$41b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 STARTFROM 31 ]]
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p55(click above to open LifeViewer ) RLE : here Plaintext : here
x = 42, y = 51, rule = B3/S23
39b2o$39bo$37bobo$37b2o$27b3o$33b3o$27bob3o3bo2$26bo7b4o$32bo5bo$26bo
2b2o3b2ob2o$35bobo$35bobo$36bo4$15bo$14bobo$8b2o4bobo$8bo4b2ob3o$2o3b
2obo10bo$o4bobo5b2ob3o10b2o$b3obo7b2obo12b2o$3bob2o$36bob2o$36b2obo3$
12b3o7b3o$14b2o5bo2bo$14b2o5bo2b2o$15b2o4b2ob2o$14bo2bo8bo$15bo2bo4bo
2bo$15bo8bo2bo$16b2ob2o4b2o$16b2o2bo5b2o$17bo2bo5b2o$17b3o7b3o4$13b2o$
13b2o20b2obo$25bob2o7bob3o$23b3ob2o5bobo4bo$22bo10bob2o3b2o$23b3ob2o4b
o$25b2o2bo2b2o$28b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 ]]
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p83(click above to open LifeViewer )
x = 41, y = 32, rule = B3/S23
23b2o$23b2o2$24bo$23bobo$11b3o4b2o2bo2bo$18b2obo$11bo10b2o$12bobo$13b
3o$8b2obo4bo19bo2bo$8bo5bob2o18bo$9bo3bob2obo16bo4bo$11b2o5bo15bobo2b
2o$17bo14b2obo3$32bo2bo$5b2o13b4o10b2o$5b2o11bo4b2o$5b2o13b2o2b2o$6bo
9bo3bobobo$5bobo8bo2bo2b2o$3obobo8bo3bo$4obo9bo2bo$4bo11bobo3$25bo$23b
3o$22bo$22b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 ]]
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Raucci's p102 (click above to open LifeViewer )
x = 46, y = 27, rule = B3/S23
5b2o32b2o$5b2o32b2o3$20b2o$2o4b2o11bo18b2o4b2o$2o3bo2bo10b3o16bobo3b2o
$5bobo16bo13b3o$6bo15b2ob3o$22b2o3bo$3bo17bo20bo$2bobo17bo3bo14bobo$2b
2o18b4o16b2o2$2b2o18b4o16b2o$2bobo17bo3bo14bobo$3bo17bo20bo$22b2o3bo$
6bo15b2ob3o$5bobo16bo13b3o$2o3bo2bo10b3o16bobo3b2o$2o4b2o11bo18b2o4b2o
$20b2o3$5b2o32b2o$5b2o32b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 STARTFROM 52 ]]
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p130 shuttle (click above to open LifeViewer ) RLE : here Plaintext : here
Dominoes available
x = 26, y = 23, rule = B3/S23
16bo$4bo9b3o$3bobo7bo$3bobo7b2o$b3ob2o$o$b3ob2o10b2o5b2o$3bob2o3b2o5b
2o4bobo$9bo3bo3b3o3b2o$9bo4bo3bo2bobo$9b2o4bo2b2o2b2o$19bobo$8bo4b2o4b
o3bo$8bo4bo4bobo3bo$4bobo10bo5b2o$6bo3b3o$6bo10bob2o2bo$17bo2b4o$18bob
o$17b2obobobo$19bobob2o$19bobo$20b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 ]]
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p21(click above to open LifeViewer )
x = 28, y = 20, rule = B3/S23
16b2o$14bo4bo$13bo6bo$12bo8bo$12bo8bo$12bo8bo$13bo6bo$14bo4bo$16b2o8b
2o$25bobo$15b2o4b2o3bo$14b2obob2o$15b2obo$17bo$3b2o2$3o2$2bo14b2o$17b
2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 ]]
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p45 pi-heptomino hassler (click above to open LifeViewer )
x = 42, y = 47, rule = B3/S23
32b2o$32bo$33bo$20bo11b2o$20b3o11b2o$23bo8b2o2bo$22b2o9bobo$17b2o7bo4b
obob2o$18bo6bobo3b2o$18bobo4bo2bo$19b2o5b2o$41bo$39b3o$38bo$25b2o3bo2b
o5bo$24bo3b5o2bobobo$17b2o6bo4bo$17b2o8bo$12bo13b3o$12b3o11b2o7bob2o$
15bo5bo2bob2o4b2o$14b2o9bo13b3o$21bo3bo$19bo3bo15bo$17bo3bo$17bo9b2o5b
o$9b2o4b2obo2bo5bo6b2o$4b2obo7b2o11b3o$14b3o13bo$15bo8b2o$2bo2bo6bo4bo
6b2o$2o4b2o2b5o3bo$2b2o5bo2bo3b2o$bo3$15b2o5b2o$14bo2bo4bobo$10b2o3bob
o6bo$6b2obobo4bo7b2o$7bobo9b2o$6bo2b2o8bo$7b2o11b3o$9b2o11bo$9bo$10bo$
9b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ GPS 4 THUMBSIZE 2 ]]
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p82(click above to open LifeViewer )