Name
Pattern
Discoverer
Date of discovery
Reason
Tarantula x = 25, y = 9, rule = B3/S23
4bo15bo$3b3o13b3o$9b3ob3o$bo6bobo3bobo6bo$obobo3bo7bo3bobobo$3bob2o2b
3ob3o2b2obo$o23bo$2o4b2o9b2o4b2o$2o4b2o9b2o4b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 ]]
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Frank Everdij January 8
it ties Spider as the smallest c/5 orthogonal spaceship.
water strider (pattern too big)
FWKnightship January 31
it was the smallest spaceship of its speed until leaf bug 2
P80 gliderless HWSS gun x = 25, y = 44, rule = B3/S23
10b3o$13bo$9bo3bo$8bobo2bo$6bo2bobo$6bo3bo$6bo16b2o$7b3o13bo$21bobo$2o
2bo16b2o$o2b2o$b5o8bo$13bob2o$13bobo$b5o8bo$o2b2o$2o2bo4$6b2o$7bo$7bo
bo$8b2o$4b2o$5bo$5bobo$6b2o2$9b2o$9b2o5$4bo2bobo$2b2obob3o$3bo6bo$2b2o
5bo$15b2o$3bo5b2o3bobo$2bo6bo5bo$3b3obob2o$3bobo2bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 WIDTH 550 HEIGHT 650 ZOOM 12 ]]
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iNoMed February 8
it's the smallest heavyweight spaceship gun known
smaller p120 glider gun
x = 23, y = 31, rule = B3/S23
2b2o10b2o3b2o$3bo3b2o5bo3bobo$2bo5bo2b2obo3bo$2b2o4bobobob2ob2o$5b2ob
obo3bo$5obobobobo3b2obo$o3bo3bobo3bobob2o$2bo3bobo2bob3o$b2obo3bo3bo$
o2b3obo$2o4bo2$13b2o$12b2obo$13bob2o4b2o$14b2o5b2o2$9b3o$8bo3bo$2b2o4b
o3bo$bo2bo3bob2o7b2o$bobobo13bobo$2bo2bo8bo6bo$6bo8bo5b2o$3bobo7b3o$13bo2$9bo$4b3ob2o2b2o$4b4o4b2o$8b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 ZOOM 12 HEIGHT 500 ]]
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Caleb R. Hilton , iNoMed , and hotcrystal0 February 20
beats out the single-barrel form of the Simkin glider gun
smaller period-35 glider gun
x = 61, y = 40, rule = B3/S23
10b2o2bo21bo2b2o3bobo$10bo2bobo2b2o14b3o2bobo2b2obob2o$7b2obob2obo2bo
14bo3b2o2b3o3bobo$8bobo2bob2obo13bobobo2b2o3bobo2bo$7bo3bobo4bob2ob3o
6bo3bobo2bobo3bob2o$8b2o5b3obo2bo2bo4b2o4b2o2b2ob4obo$10b2o3bobo2bobob
obob2obo5bo4bobobobo$8b2obobo3b2o3b2ob3o3bob8obobobob2o$9bobobobobo4b
2o17bo2b2o$7bo2bobob2obobo3b4obo2bob4o2bobobo$7b2obobo5b2o8b4obo2bo2b
2o2bo$9bo2bo11bo4bo13b2o8b2o$9bobo6b2o4bo6bo21bo$8b2ob2o5bobo2bo6bobo
18bobo$9bo3bo5b3obob4o3bo5b2ob2ob2o5b2o3bo$7bo2bob4o11bob3o5bo8bo8bobo
$7b4obobobo7b3ob3o6bo8bo8bo2bo$11bo2bob2obo5b2o3bo6bo8bo7b2o3bo$5b5o2b
2o3b2o5b2o3b3o6b2ob2ob2o6bo3b3o$4bo2bo2b2o2b2o4b4ob2o4bo20bo3bo$4b2o3b
o2bo2bobobobobob2o3b2o6b2ob2ob2o6bo$6b4o2b2obobo3bobo4bo8bo8bo6bo$2b3o
bo8bo2b4obobo4bo6bo8bo7bobo$bo2b3ob2o5b3o6bo4b2o6bo8bo6bo$obo4b2obo7b
5obo2b2o9b2ob2ob2o6b2obobob2o$bo8bo6bo4bo2b2o26bobob2obo$10b2o6b3obo
28bobob2o$2bob3o6b2o5bob2o6b3o17bo2bo4b2o$2b2ob2o3b6o5bo2bo4bo3bo16b2o
bob3obo$7bobo5b2o5b3o4bo3bo3bobo13bobo$2b8o3bo2b2o7bo3bo3bo4b2o13b2o$
2bo7bobobo2b6o3bo3b3o5bo$3b3ob4obobo11bo$5b2o4bo3b3obo3bobo9b2o$8b2obo
b2o2bobobobobobo7bobo$9bo2bobobo2bobobo2bobo8bo$7bobo6b4ob2ob2o2bo8b2o
$7b2o6bo8bo3b2o17bo$15b2o2b4obo23bo$19bo2b2o22b3o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 ]]
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Matthias Merzenich February 23
it's the new smaller period-35 glider gun
reduced period-47 glider gun
x = 80, y = 41, rule = B3/S23
61b2o$62bo11bo$62bob2o6b3o$63bo2bo4bo$11bo7bo45b2o4b2o$10bobo5bobo$11b
o7bo30b2o$50bo5b2o$51b3obobo$53bobo$6bo17bo21b2o6bobo$6bo5bo5bo5bo22b
o7bo13bo$6bo4b3o3b3o4bo22bobo18bobo$2b2o6bobobobobobo6b2o19b2o17bo3bo
$bobo5b3ob2ob2ob3o5bobo5b2o30bo3bo$bo8bobobobobobo8bo6bo30b2ob2o$2o9b
3o3b3o9b2o5bobo15b2ob2o$12bo5bo18b2o15bo3bo$7b2o13b2o30bo3bo17b2o$7b2o
13b2o17b3o11bobo18bobo$12bo5bo21bo3bo11bo13bo7bo$2o9b3o3b3o9b2o9bo3bo
24bobo6b2o$bo8bobobobobobo8bo10bo3bo25bobo$bobo5b3ob2ob2ob3o5bobo11b3o
24bobob3o$2b2o6bobobobobobo6b2o39b2o5bo$6bo4b3o3b3o4bo19b2o28b2o$6bo5b
o5bo5bo19bo$6bo17bo20b3o5b2o4b2o$47bo6bo4bo2bo$51b3o6b2obo$33b2o16bo11b
o$11bo7bo12bo2bo27b2o$10bobo5bobo12bobo$11bo7bo13b3o4$36b2o$36bo10bo$30b2o5b3o8bo$30b2o7bo6b3o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 WIDTH 600 ZOOM 6 ]]
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Period1GliderGun , Caleb R. Hilton March 4
massive reduction to the p47 glider gun
true period-14 glider gun
x = 72, y = 64, rule = B3/S23
39b2o$38bo2bob2o$37bo2b2obobo$37b2obo4bo$38bo2b2o2bob2o$36bo2bobo2b2o
2bo$35bob3obobo2bo$26bo9bo5bob2o$26b3o8b3o$4b2o23bo10b6o$4bobo4b2o3b2o
6b4o2bo4b3ob2o4bo$7bo3b2o2bobo6bo3b2o4bo3bobob2o$2o3b2obo6bobob2ob2o3b
o4bo2b4obobo$bo2bobob7obobobobo5b6obobo2bo3bo$o3bo2bo8bo3bo2bo4bo6bo2b
o2b4o$4obo2b6o2b2ob6o5b5o3b2o$5b3o4bo2b3obo4bo8bo5bob2o$2o3bobobo4bo5b
ob2o10b2obobobobo$o4bobobob10obo4bo6bo3bobo2bo$b3ob2o2bo12bo3bobo5bo3b
obobo$4bo4b4o2b2o2b2obob3obo4b5o3bo$b2obo7bo2bo4bo2bo4b2o2b5o$bobo7bo
4bo3bo3b4o2bo5bo$10bob4o2b2ob3o4b2o5bo$11bo4b2obobo3b2obobo3b2o3b2o$12b
3obo9bobo2b2obo3bo2bo$14bo2b4o4bo2bo4bo4b3o$15b2o4bo4b3ob3obo$17b5o7b
ob2o3b3o$17bob4o3b2obo4b2o3bo$4b2o8b2obo5bobobob2o4bo3bo$5bo8bo2bo2bo
2bobo3bo2b2o3bob2o$5bobo7b2o2bobobo2bo2bo6b2o3bo$6b3ob2o5b5ob3o2b2obo
6b3o3b2o$8b2obo5bo4bo7b2obo4bo5bo2b2o$8b3o7b3obob6o2b2o11bobo$4b2o3bo
10bobobo9b2o8b2obo2b2o10b2o$4bo2bobo17b2obo2bobo7bo3bobobo10bobob2o$6b
2obo2bo8b3o3bo4bo2bo6b3ob2obo14bobobob2o$10b2o16bo3bo2b2ob2o23b2o3bob
o$29b2ob2o6bo5b2o4b2ob2o7bo3bo2bo$22bo9b2o3bo2bo4b3o3b6o2b2o2bo5b2o$21b
3o13bo2bo3bo13bo5b5o$11b2o7b5o12b2obo3b2o4bobo2bobo3bo6bo$11b2o6b2o3b
2o4bo7bobo3bo3bobob2obob11o$10bo8b2ob3o3bobo7bobobobobobobo14bo$9b3o8b
4o5b2o8bobob2ob2o2bobob9o$19bo2bo10bo7bo3bo4bob2o5bo2bo$34bo5b2o3bob3o
5b2o$14b3o7bo7b3o11b2o8bo$15bo7bobo28bo$13b2o9bo12bo16b2o$13b2o20bobo
$36b2o$40bo$41bo$14b2o23b3o$14bobo$15b2o27bo$42bobo$12b2o29b2o$13bo33bo$10b3o35bo$10bo35b3o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 ]]
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Matthias Merzenich March 16
it's the first p14 glider gun of true period.
true period-18 glider gun
x = 68, y = 50, rule = B3/S23
31b2o4bo$32bo3bobo$32bob3obo$33bo3bo9b2o13b2o$35bo9bo2bo3b2o3b2o4bo$34b
3o6b4obob3obo2bo2b3o$37bo4bo4bobo4bo3bobo$32b3ob3o4b2o2bo2b2obob4obob
3o$30b2o3bo4b2obob3o2b2obo8bo2bo$28bo2b3o2bo3b2ob2o3bo2bob2o2b2o5b2o$
28b5obobo7bob2ob2obo3bobo$24b2o7b2obob7o2bobo2b3o3bobo$25bo2b4o2bob2o
7b2o3b2o3b4ob3o$8bo16bobobo9b2o2b2o7b2o9bo$7bobobo2b2o6bob2obo2b2o3b4o
2bo2bo7bob3o5b2o$6bobob2o2b2o4b3obo2bo5bobo2bo2b2o13bo$3bobo2bo10bo6b
2ob3obo$b3ob3o2b8o2b6o2b2o4bo$o7bobo7b2o6bo2bo3bo5bo8b2o$obob2o2b2o2b
2o2bo3bob2obo4bo2bo3b3o9bo2b2o$bobobo2bo3bo4bob2obobo2bo3bo4bo12bobo2b
o$3bobob3obobo3bo4bo2b4o6bobo8b2obo2b2o2bo2bo$3bob2o2b2o3bo7bo7b2ob3o
bo7bo2bob2o2b6o$bo3bobo3b3o3bo2bob2o7bob4o8b2obo4bo$b3o4b2obo2b7obo7b
2o16bo2b2ob3ob4o$b2o6bo2bobo7bobo3b2obo11b2o3bobo3bobobo2bo$3o6bob2ob
o2b4o2bobobob4o2bo5b4o4b6obo$8b2o2bobobo4b2o2bobo3bo3b2o3b2obo2bobobo
4bobo$10bo4bo3b2o2b2o2b7ob2o4b2o2b2obob2ob2o2bo$10b2o4b2ob3o3b2o3bo10b
2o3bobobo3bobo$8b2o2bo6bo3b2o2b3o6b4o5bo2bo2b3o2b2o$9bobo2b3o2b2o3bob
o2bo5bo6bobo3bo5b2o$9bo2b2o2b3o5bob2ob2o4bobo2bobobobob2o3bo2b2o$8b2o
bo7b5obo3bob3o4bobobob2obo6bo3bo3b2o$7bo3b3o2b2o9b2ob4ob3o2b2obo3bo7b
2o2bo3bo$8b3o3bo2b2o2b6obo4b3o2b2o3bo3bob2ob3o2b2o3bo$11b2ob2o12bobo4b
obo2b3o3b2ob2obo2bobo4b4o$10bo2bo2b3ob4ob2ob2ob2ob2o2bo6bo8b2obo2b2o3b
o$8b3obo2bo2b8obo3b2o2b2obob3o2bo8bo2bobo2bo$7bo4bob2o14bo7bobo2bob2o
5b3o2bobobo$7b5obo14bo2bo3b2obobob2obo6b2o4b2o2bo$5b2o6bo14bob4o6bobo
2b2ob3o2bobobo2bob2o$4bo2bobobob2o17b2ob2ob5o3bobo2bobobob4obobob2o$4b
2obobobo2bo13b2o7bo4b2obo2bob2obob2o4bo2b2obo$7bo2bob2o8b2o5bo12b2o4b
o3bobo3bo2bobo$7b2obo3bo6bobo5bo19b2obo2bob2o3b2o$9bobob2o6bobo4bo22b
ob2o$9bobobo7b2o28bo$10bo2bo36b2o$11b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 ]]
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400spartans , Period1GliderGun ; reduced by several individualsMarch 25-26
it's the first p18 glider gun of true period.
154-cell unsynthesizable still life
x = 23, y = 22, rule = B3/S23
6b2o$5bo2bo3b2o$5bo2bo3bo3b2o$3b2ob2ob2obo2bo2bo$3bo2bo2bo2b2o2bo2bo$
b2o2bo2bo2bo2b2ob2obo$o2b2ob2ob2obo2bo2bobo$bobo2bo2bo2b2o2bo2bo$2o3b
o2bo2bo2b2ob2o$bo2b2ob2ob2o2bo2bo3b2o$bobo2bo2bo2b2o2bo2bo2bo$2bobo2b
o2bo2bob2ob2obo$4b2ob2ob2o2bo2bo2bo$3bo2bo2bo2b2o2bo2bo$3b2o3bo2bo2b2o
b2o$7b2ob2o2bo2bo$6bo2bo2b2o2bo2bo$5bobo2bo2bob2ob2o$5bob2ob2o2bo2bo$6bo2bo5bobo$7bobo6bo$8bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 ZOOM 12 ]]
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400spartans April 3
it is the smallest still life without a synthesis
Sawtooth 168#C A sawtooth with a repeating minimum population of 168.
#C This uses two period 120 glider guns whose gliders are
#C sent to a receding diagonal c/5 spaceship while being
#C thinned by the interaction of a period 45 sparker.
#C The first few gliders reaching the ship create a block
#C which is then pulled back to the guns by further gliders
#C using the standard block pull reactions. When the block
#C is close enough it is deleted by the thinning reaction.
#C This is a small adjustment of a previous version.
#C David I. Bell, 7 April 2025
x = 83, y = 84
25boo$25boo$24bobbo$21boobobbo$27bo$19boo3bobbo$19boo5bo$20bob5o$21bo
3$18b3o$18bo$16boo$10boo4bo$10b3o3bo$8bo4bo$8bo3bo$12bo$7boobobo$5boo
5bo$5boo4boo$7b4o$$46boo$46boo3$9boo38boo$9boo38boo$$46boo$46boo$10bo$
9b3o$8booboo$$bo$obo$oo46boo$$48boo$8bo4bo$6boob4oboo30bobo$8bo4bo33bo
$40b3o4bo$40bo26boboo$41bo25boobo$57boo$57boo$$54boo7boo$54boo7boo3$
57boo7boo$57boo7boo$$63boo$63boo7$65boo$$65boo$$63bobo$64bo$64bo3$74b
oo5boo$74boo6bo$81bo$71boo8boo$71boo3$74boo$74boo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 3 ]]
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David Bell April 6-7
it is the smallest sawtooth by minimum population.
Leaf bug 2 gun(pattern too big)
Entity Valkyrie August 14
first gun created to fire a 31c/240 orthogonal spaceship