Execution of Old Guns by Variable-Speed Firing Squad

[Period1GliderGun]

Here are some reductions based on the new 29*31 p55 gun.

gun_110 reduction (1218 -> 1189)

Code: Select all

x = 41, y = 29, rule = B3/S23
25b2ob2o$26bob2o$5bo7b2o8b2o$5b3o5bobob2o3b2ob5o$8bo6bob2o6bo3bo$7b2o
5bo9bo2bo$14bob3o6b4o$9b2o4bo2bo5bo4bo$8bo2b6o4b2o3b2o2bo$8bo3b4o6bob
o2b3o$9bo13bobo$3bobo17bo2b4o4bo$2bob2o17bo3bo2bo2bobo$2bo20b2ob2obob
o2bobo$2ob5o15bo3bobob2obo2bo$bobo4bo15b2obobo2bob3o$bo2b2o2bo3bo12bo
b2obo$2o2bo6bo2bo9bo5b5o$2b2o3bo6bo9bob4o5bo$2bob2o3bo5bo9bo4b2o2b2o$
obobo6bo3bo10b3obobo3b2o$2o2bo4b3o2bo13bo3b2obo2bo$4b2o26bo3b3o$33b3o
$33bo3b2o$17b2o13b2obobobo$17bo10bo4bobobobo$18b3o8bo6b2ob2o$20bo6b3o
!

gun_165 reduction (1472 -> 1426)

Code: Select all

x = 31, y = 45, rule = B3/S23
19b3o2$18bo3bo4b2o$18bo3bo3bo2bo$29bo$19b3o3b4o$26bo$26bo$19b3o3b4o$29b
o$18bo3bo3bo2bo$18bo3bo4b2o2$19b3o$29b2o$28bobo$20bo9bo$18b3o$17bo$17b
2o2$11bo$4b2o5bo2bo$2o2bo10bo$obobo6bo2b2o$2bob2o4bo5bo$2bo2bo5bo3bo10b
o$2o2b2o9bo9bobob2o$bob3o19bobobo$bobo4bo15b2obobo$2ob5o15bo3bob2o$2b
o19b3ob2obo$2bob2o16b2obo4bo$3bobo16b2o2b4o$13b2o7b2obo$8b2obo4bo4b2o
b2ob3o$8bob2o4bo4b2o2b3o2bo$9b4o5bo10bo$8b2o4bob3o5b5o$7b2o5bo9bo2bo$
8bo6bob2o4bobo3bo$5b3o5bobob2o3b2ob5o$5bo7b2o7b3o$24bobob2o$25b2ob2o!

gun_220 reduction (1692 -> 1656)

Code: Select all

x = 46, y = 36, rule = B3/S23
16b2ob2o$16b2obobo$23bo7b2o7bo$16b5o6b2obobo5b3o$16bo3bob2o3b2obo6bo$
18bo3bo8bo6bo$17b5o5b2obobobo3bo$16bo4bo5bob2o2bo$15bo2bob5o3bo8bo$16b
3o11bo2b2ob2o$20bo$16b5o3bo6bo8bobo$15bo4bo3bo4b2o9b2obo$14bobob3o8b3o
11bo$14bobobo4bo4bobo7b5ob2o$15b2obob2o6b2o8bo5bo$18bobo19bobobo$12b2o
4bobo18bo4b2o$11b3o5bo19bo3bo$10bob2o20bo5b2obo$9bobo21bobo5bobobo$9b
o2bo9bobo8bobo5bo2b2o$10b2o10b2o10bo5b2o$4b2o10b2o5bo$3bobo9bo2bo$3bo
12b2o9b2o$2obo7bo16bo$bobob2o2b3o13b3o$bobob2o2b2o14bo$2obo7bo$o2b4o3b
o10b2o$b2o3bo3bo10bobo$3b2o18bo$3bo13bo5b2o$5bo12bo$4b2o10b3o!

gun_330 reduction (1886 -> 1840)

Code: Select all

x = 46, y = 40, rule = B3/S23
14bo2bo2b2o$14b4o3bo$12b2o4b3o$11bo2bobo$12bobo4b4o$2b2o7b2obobo2bo2b
o$3bo10bo2b2o$3bob2o7b2o$4bo3b2o$9bo$20b2o$6bo2bo9bo2bo$7bobo10b2o$2b
2o2bo8bo$2bo2bo7bo2bo$3b2ob2obo7bo$7bo6bo2b2o$3b2obobo6b3o7b2o$3b2ob2o
6b3o8bobo$15b2o10bo6bobo2bobo$27b2ob2obo2bo2bo2bob2o$8bo2b2o21bobo2bo
bo$2bobo3bo5bo$4b2o2bo$bo4b3o6bo7bobo$o2b2obobob4ob3o6b2o8bo6bo$2obo2b
o4bobo4bo5bo7bo2bo4bo2bo$3bob2ob2obob5o14bo2bo4bo2bo$2obo2bo2bobo20bo
2bo4bo2bo$2ob2o2bobobob5o16bo6bo$8bo3bobo2bo3$18b2o$11b3o4b2o$10b5o6b
2o$9bobo3bo5b3o5b2o$9b2o3bo6b2o6b2o7bo$18b2o19bo$18b2o17b3o!

gun_440 reduction (1974 -> 1936)

Code: Select all

x = 42, y = 46, rule = B3/S23
14bo2bo2b2o$14b4o3bo$12b2o4b3o$11bo2b3o$12bobob2ob4o$2b2o7b2obob4o2bo
$3bo10bo$3bobo8bo$4b3ob2o5bo$6b2obo10bo$7b2o12b2o$7b3o10b2o$7bo$2b2o6b
o6bo$2bo2b2o3bo7b3o$3b2o13b3o$6bob2o$3b2obo18b2o$3b2ob2o17bobo$27bo$27b
2o$8b2o23bo6b2o$2b2o4b6o17b3o5bobo$2b3o5b5o15bo10bo$b2o2b2o2bo3bobo14b
2o$o2b2obob3obo2b3o$2obo2bobo2bobo4bo$3bob2ob2obob5o$2obo2bo2bobo$2ob
2o2bobobob3o$8bo3bo2bo22b2o$13b2o23b2o$17b3o10bo$17b3obo7bobo$18bobob
o6bobo5b2obo$19bo2bo7bo7bobo$20b2o17bo$38b2o$38b2o$27b2ob2o6b2o$23b2o
2b2obo3b2o$23bo6bobo2bo$24b7ob2o$31bo$26b4obo$26bo2b2o!

2 miscellaneous others:
gun_408 reduction (2255 -> 1968)

Code: Select all

x = 48, y = 41, rule = B3/S23
21bo$21b3o7bo$24bo5bobo$23b2o6bo3$4b2o$5bo$5bobo$6b2o26b2o$27b2o5bobo
$20b4o2bo2bo6bo$2b2o11b2ob3o5bobo7b2o$3bo10bobob4o2bo2bo4b2o7bo$3bobo
7b2ob6ob2o7bobo4b3o$4b2o4bo2bo2b4obobo10bo3bo$2o7bobo5b3ob2o11b3o2bo6b
2o$bo6bo2bo2b4o19b3o5bobo$bobo5b2o25bo10bo$2b2o32b2o5$22b2o$6bo6b2o6b
o2bo19b2o$5bobo5bo7bobo20b2o$6bo7b3o5bob2o10bo$16bo6b3o9bobo$24b2o9bo
bo5b2obo$36bo7bobo$45bo$44b2o$44b2o$33b2ob2o6b2o$29b2o2b2obo3b2o$29bo
6bobo2bo$30b7ob2o$37bo$32b4obo$32bo2b2o!

gun_477 reduction (4189 -> 4029)

Code: Select all

x = 51, y = 75, rule = B3/S23
26bo$25bobo9bo$24b2ob2o6b3o$24bo9bo$7b2o13bobo9b2o$8bo11b2obo$7bo11bo
bo3bob2o$7b2o10b4o5b2o$5b2o2bo16bo2b3o$5bo2b2o3b2o10b2o3bobo$6b2o5b2o
7bo2b2o6bo$8b2o17b2obobo$8bo14bo4bo2bo3b2o$5b2obobo2bo8bo5bo6bobo$5bo
b2ob4o13bo9bo$16bo7b3o10b2o$12b5o7b2o6b2o$12bo19bo$14bo19bo$13b2o6b2o
7b5o$8b2o10b3o7bo$9bo9bo13b4ob2obo$9bobo6bo5bo8bo2bobob2o$10b2o3bo2bo
4bo14bo$14bobob2o17b2o$13bo6b2o2bo7b2o5b2o$14bobo3b2o10b2o3b2o2bo$15b
3o2bo16bo2b2o$17b2o5b4o10b2o$3bo14b2obo3bobo11bo$3b3o17bob2o11bo$6bo4b
2o9bobo13b2o$5bo2bo3bo9bo16bo$4bob6o6b2ob2o15bo$4bo14bobo17b3o$ob2ob7o
8bo21bo$2obobo6bo28b2o$5bob2o2b2o$4b2ob2o35b2o$43bobo$43b2o$7b2o21b3o
$4b2ob2o21bo3bo14b2o$6bob2o6b2o12b5o14bo$16bo9b2o4b2o8b2o3bobo$14bobo
8bobo14bobo2b2o$14b2o9bo19bo$24b2o16bo2bo$o41bo2bo$obo40bo$2o15bo23bo
bobo$17b3o20bob2ob3o$20bo19bo7bo$4b2o13b2o4bo13b2o6b2o$5bo18bo$2b3o19b
3o$2bo4$29b2o$29bobo$31bo$21b2o8b2o$21b2o4$19b2ob2o$20bob2o2b2o$15b2o
bobo6bo$15bob2ob7o$19bo$19bob4o$20b2o2bo!

[KtT]

guntrue_208 in 1312, down from 1394:

Code: Select all

x = 40, y = 32, rule = B3/S23
b2o8b2o$b2o9bo7bo$12bobo4bobo$13b2o5bo12b3o$3o6b2o22b3obo$2o7b2o23bob
obo$3b2o30bo2bo$2b3o31b2o$bobo15b2o$b2o16bobo$19bob2o$16b6o14b2o$10b2o
3bo4bo15b2o$b2o6bo2bo2bo2bo$o2bo6b2o4b2o$obobo23b2o5b3o$bob3o22b2o5b2o
$3b3o12bo19b2o$17bobo17b3o$18bo17bobo$21bo14b2o$20bobo$12b2o7bo$12b2o
bo$16bo5b2o$13bo7b3o$14bob2o3b3o$16b2o3$22b2o$22b2o!

[Entity Valkyrie 2]

gun_18 reduced from 151×64 (9664) to 150×64 (9600):

Code: Select all

x = 150, y = 64, rule = B3/S23
85b2o$86bo5bo47b3o$2o5b2o69bo2bo2bo5b3o48b2o$o5bobo25b2o42b4o2b2o3bo
51b2obo$b3o2bo28bo5bo34b2o4b2o3bo2bo50bo5b2o$4bobo3bo16bo2bo2bo5b3o8b
2o23bo2b4o2b5obo51bo2b3obo$b2obobo3b4o13b4o2b2o3bo12bo24bobo3bobo3b2o
9bo14b2o27bo5bo$4bo3bo16b2o4b2o3bo2bo11bobo8bobob2o4b4obo3bobob2o10b3o
8bo5bo30b4o$bo22bo2b4o2bob3obo12b2o3b2o3bo9b2ob2o5bobo11bo11b3o5bo2bo
2bo21b2o$o24bobo3b3o3b2o9bo8b3o8bo6bo20b2o13bo3b2o2b4o21b2o$obo18b4obo
3bo3b2o10b3o11b2o6bo14bo26bo2bo3b2o4b2o21b3o$b2o8b3o7b2ob2o4bobo12bo
11b3o7bo15bo10bo15bo3b3o2b4o2bo$10b2o3bo8bo6b3o11b2o10b3ob2o2b2o26b3o
5bo9b2o3b3o3bobo2bo21bo$9b2o2bobo56b2obo9b2o5bobobo4b3o11bo3bo3bo4bo
17b2obo$10bo5bo6bo47bo4bob2o5bobo3b3ob3o6bo10bobobo8bo7b2o4b2o4bo$11b
2o2bo5bo33bo14bo6b2o8b2o3bobobo6b2o11b3o5b3o7b2o3bo2b2o$15bo5bo2b2o28b
obo6bo6bo7b2o6b2o5b3o21bo17bob3o$13bo6bo5bo15b3o5b2obo2bo5b2ob2o9bo2b
4o11bo39bo3b3o4b2o$21bobo2b2o14bo3bo4bob2o2b2o2bob4o4b2ob2o4b2o38b2o
22bo$12bo8bo3b2o15bob2o3bo2bo2bobo2bobo43bo11bo22b2o$9b2ob2o9b3o10bobo
10b2obob2o2bobo2bo41b3o8b2o4b3o3bo$9b5o23b2o11bo2bo3b2o2b2o53bo6b3obo$
12b2o23bo12bo2bo5b2o2b3o13b2o2b2o9bo21bo2b2o2bo3b2o7b3o$12bo38b2ob5o2b
obo2bo11bo2b2o2bo6bobo22bob2o4b2o13bo$30b2o23bo2bobobo2b2o9bobob4obobo
5b2o40bo4bo$12bobo14b4o16b6o2b2obo13b3obobo2bobob3o49bo$13bo14bo4bo15b
o4bo3bo2bo3b2o6bo3b2ob4ob2o3bo17bo27b2o$25bobobo2bobobo13b3obob2ob2obo
bobo7b2o3bo4bo3b2o18bobo25bo$23b3obobo2bobob3o13bo6bo2bobo11b2o2bo2bo
2b2o20b2o6b6o14bo$22bo3b2ob4ob2o3bo5bobo13b2ob2o10bob2o4b2obo26b2o6b2o
12bo$23b2o3bo4bo3b2obo5b2o5bo4bo54bobobo2bobobo$25b2o2bo2bo2b2o2bobo4b
o8b2o54b3obo6bob3o$25bob2o2bob2obo2bobo68bo3b2ob4ob2o3bo$29b3obo3b2obo
18b2o16b2o16b2o14b2o3bo4bo3b2o$26b2o5bob2o3bobobo13b2ob2o13b2ob2o13b2o
b2o14b2o2bo2bo2b2o$27bob3ob2o2b3obob2o14b4o14b4o14b4o14bob2o4b2obo$26b
o2bo2bo3bo4bo3b2o13b2o16b2o16b2o11b2o21bo$26b2o2bo3b2ob4ob2o3bo60bo2bo
20bobo$31b3obobo2bobob3o7bobo51bobo20bobo$33bobobo2bobobo5bo4b2o52bob
4o7b2o9bo$36b2o2b2o8b2o3bo54b2ob2o10bo$20b3o13b2o2b2o7bobo52b2o5bo8b2o
4b2o$21b2o36bo37bo5b2o14b2o6bo$20b2o38b2o29bo4bobo6bo12b2o7bo$21bo37b
2o30b3o2bobo11bo8bo3bo2bo6b2o$17b2o9b2ob2o4b2o55bobob2o8bo2bo3bo8bo8bo
bo$18bob2o6b2ob2o4bo2bo2bo47b4obo3bo6bo7b2o18bo$20bo6b2o3bo3bo3bo3bo5b
3o10bobo25bo2bobo3bo6bo6b2o19b2o$20bo7b2ob2ob2o8bo4bo3bo10b2o27b2obo3b
o6b2o4b2o8bo$29b5o8bobo4bo3bo10bo22b2o2bo2bo5bo8bo12b2ob2o6bo$30bo4bob
o3bobo5bo3bo33bo2bobobo2bo2bo10b2o8bob4o5bobo$14b2o2b2o2bo27b3o15bo19b
5ob2obo2bo19bobo9bob3o$14b2obob5o45b2o22bo2bob2o20bo2bo9bo3bo$20b2ob2o
7bo6b3o26b2o18b4obob2obo7b2ob2o10b2o12b3o$14b4o2bo3b2o6bo20b2o33bo2bob
obo2bo7b2o6b2o9b2o6bo$9b2o4bo3b3ob2o5bob2o4bobobo10bo38bo3b2o7bo3bo3b
3o10b3o2b2o2b3o$8bobo9b2ob2o4b2o3bo3bo3bo11b3o15bobo31b3o4bo2b4obobob
3obo2b3o2bo$8bo24bobo3b2o2bo2bo9bo16b2o33bo3bobob2o4bo6bobo3bo$7b2o23b
o2b4o3b4obo25bo32b2o4bobobobobobobo2bo4bobo$33b2o4b2o5b2o58bo6bo2bobo
3bob8obo$35b4o2b2o3bo30bo26bobo4bobob2obob2obo7bobobo$35bo2bo2bo5b3o
28b2o24b2o3b3ob2o2bobo3bob2o2bobob2obo$43bo5bo27b2o29bo7bo2bo3b2obo2b
2o5bo$42b2o64b2o7b2o17b2o!

[Vort]

This idea wasn't as bad as I initially thought
gun_2647: 33043 -> 20608:

Code: Select all

x = 322, y = 64, rule = LifeHistory
29.2A68.2A24.2A40.2A24.2A38.2A20.2A31.A11.A$21.2A5.A.A27.2A31.2A5.A.A
24.A.A31.2A5.A.A24.A.A29.2A5.A.A20.A.A30.3A7.3A$21.A.A4.A29.A.A30.A.A
4.A28.A4.2A25.A.A4.A28.A4.2A23.A.A4.A24.A4.2A27.A5.A$23.A2.2A.4A27.A
4.2A26.A2.2A.4A20.4A.2A2.A2.A25.A2.2A.4A20.4A.2A2.A2.A23.A2.2A.4A16.
4A.2A2.A2.A24.2A5.2A15.A$22.2A.A.A.A2.A23.4A.2A2.A2.A23.2A.A.A.A2.A
20.A2.A.A.A.A.2A24.2A.A.A.A2.A20.A2.A.A.A.A.2A22.2A.A.A.A2.A16.A2.A.A
.A.A.2A24.5B3.B13.3A$23.A.ABABAB25.A2.A.A.A.A.2A24.A.ABABAB24.BABABA.
A28.A.ABABAB24.BABABA.A26.A.ABABAB20.BABABA.A29.4B2.4B9.A$23.A.AB2AB
28.BABABA.A27.A.AB2AB26.B2ABA.A28.A.AB2AB26.B2ABA.A26.A.AB2AB22.B2ABA
.A27.15B6.2A$24.AB.2B30.B2ABA.A28.AB.2B28.2B.BA30.AB.2B28.2B.BA28.AB.
2B24.2B.BA27.17B2.5B$19.A7.3B30.2B.BA32.3B26.3B36.3B26.3B34.3B22.3B
29.23B$17.3A7.4B6.2A20.3B35.4B6.2A8.2A6.4B36.4B6.2A8.2A6.4B34.4B6.2A
4.2A6.4B29.22B2A$16.A8.3B2AB6.A12.2A6.4B33.3B2AB6.A10.A6.B2A3B32.3B2A
B6.A10.A6.B2A3B30.3B2AB6.A6.A6.B2A3B27.22B2A$15.A.A7.3B2AB3.BA.A13.A
6.B2A3B31.3B2AB3.BA.A10.A.AB3.B2A3B32.3B2AB3.BA.A10.A.AB3.B2A3B30.3B
2AB3.BA.A6.A.AB3.B2A3B25.2AB.19B.B$14.BA.A5.10B.B2A14.A.AB3.B2A3B29.
10B.B2A12.2AB.10B28.10B.B2A12.2AB.10B26.10B.B2A8.2AB.10B22.A.AB2.18B$
13.3BA5.13B17.2AB.10B26.13B16.13B26.13B16.13B24.13B12.13B21.A6.16B$
11.4B6.14B19.13B24.14B16.14B24.14B16.14B22.14B12.14B19.2A6.15B$9.6B5.
15B19.14B22.15B16.15B22.15B16.15B20.15B12.15B28.12B$8.7B4.4B2.8B21.
15B20.4B2.8B20.8B2.4B20.4B2.8B20.8B2.4B18.4B2.8B16.8B2.4B27.15B$.B.4B
.8B2.4B5.6B23.8B2.4B18.4B5.6B20.6B5.4B18.4B5.6B20.6B5.4B16.4B5.6B16.
6B5.4B26.16B$2AB.17B4.9B22.6B5.4B16.4B4.9B18.9B4.4B16.4B4.9B18.9B4.4B
14.4B4.9B14.9B4.4B24.4B.12B7.2A$2A18B5.2A4.4B20.9B4.4B14.4B5.2A4.4B
16.4B4.2A5.4B14.4B5.2A4.4B16.4B4.2A5.4B12.4B5.2A4.4B12.4B4.2A5.4B22.
4B3.11B2.2A2.A2.A$.2B.16B6.A5.4B18.4B4.2A5.4B12.4B7.A5.4B14.4B5.A7.4B
12.4B7.A5.4B14.4B5.A7.4B10.4B7.A5.4B10.4B5.A7.4B20.4B2.4B.8B2.A.A2.2A
$4.16B3.3A7.4B16.4B5.A7.4B10.4B5.3A7.4B12.4B7.3A5.4B10.4B5.3A7.4B12.
4B7.3A5.4B8.4B5.3A7.4B8.4B7.3A5.4B18.4B3.2A4.7B3.B.2A$5.15B3.A10.4B
14.4B7.3A5.4B8.4B6.A10.4B10.4B10.A6.4B8.4B6.A10.4B10.4B10.A6.4B6.4B6.
A10.4B6.4B10.A6.4B16.4B5.A4.7B2.2B2.A$6.12B.B2A.A11.4B12.4B10.A6.4B6.
4B19.4B8.4B19.4B6.4B19.4B8.4B19.4B4.4B19.4B4.4B19.4B14.4B3.3A6.6B.2BA
B.A.2A$6.11B2.BA.A.2A10.4B10.4B19.4B4.4B21.4B6.4B21.4B4.4B21.4B6.4B
21.4B2.4B21.4B2.4B21.4B12.4B4.A8.8BA.A.2A.A$7.10B5.A2.A11.4B8.4B21.4B
2.4B23.4B4.4B23.4B2.4B23.4B4.4B23.8B23.8B23.4B10.4B14.8B.A.A$7.6B2A2B
5.2A14.4B6.4B23.8B25.4B2.4B25.8B25.4B2.4B25.6B25.6B25.4B8.4B16.5B4.A
2.2A$7.6B2A3B21.4B4.4B25.6B27.8B27.6B27.8B27.4B27.4B27.4B6.4B17.6B4.
2A.3A$7.10B23.4B2.4B27.4B29.6B29.4B29.6B27.6B25.6B27.4B4.4B17.6B6.B4.
A$3.A.2AB.8B24.8B27.6B29.4B29.6B29.4B27.8B23.8B27.4B2.4B18.7B3.B2AB3A
$.3AB2AB3.7B24.6B27.8B27.6B27.8B27.6B25.4B2.4B21.4B2.4B27.8B20.8B.B2A
.A$A4.B6.6B25.4B27.4B2.4B25.8B25.4B2.4B25.8B23.4B4.4B19.4B4.4B27.6B
21.10B$.3A.2A4.6B25.6B25.4B4.4B23.4B2.4B23.4B4.4B23.4B2.4B21.4B6.4B
10.A6.4B6.4B27.4B21.3B2A6B$3.2A2.A4.5B24.8B23.4B6.4B21.4B4.4B21.4B6.
4B21.4B4.4B19.4B8.4B7.3A5.4B8.4B25.6B14.2A5.2B2A6B$6.A.A.8B22.4B2.4B
21.4B8.4B19.4B6.4B19.4B8.4B19.4B6.4B6.A10.4B10.4B5.A7.4B10.4B23.8B11.
A2.A5.10B$2.A.2A.A.A8B8.A9.B2.3AB4.4B19.4B10.4B10.A6.4B8.4B6.A10.4B
10.4B10.A6.4B8.4B5.3A7.4B12.4B4.2A5.4B12.4B21.4B2.4B10.2A.A.AB2.11B$
2.2A.A.BA2B.6B6.3A7.7BA6.4B6.A10.4B12.4B7.3A5.4B10.4B5.3A7.4B12.4B7.
3A5.4B10.4B7.A5.4B14.9B4.4B14.4B19.4B4.4B11.A.2AB.12B$5.A2.2B2.7B4.A
8.8BA8.4B5.3A7.4B14.4B5.A7.4B12.4B7.A5.4B14.4B5.A7.4B12.4B5.2A4.4B16.
6B5.4B16.4B6.A10.4B6.4B10.A3.15B$5.2A.B3.7B4.2A7.8B10.4B7.A5.4B16.4B
4.2A5.4B14.4B5.2A4.4B16.4B4.2A5.4B14.4B4.9B17.8B2.4B18.4B5.3A7.4B8.4B
7.3A3.16B$3.2A2.A.A2.8B.4B6.8B12.4B5.2A4.4B18.9B4.4B16.4B4.9B18.9B4.
4B16.4B5.6B16.15B20.4B7.A5.4B10.4B5.A6.16B.2B$2.A2.A2.2A2.11B7.10B12.
4B4.9B20.6B5.4B18.4B5.6B20.6B5.4B18.4B2.8B16.14B22.4B5.2A4.4B12.4B4.
2A5.18B2A$3.2A7.12B6.9B14.4B5.6B21.8B2.4B20.4B2.8B20.8B2.4B20.15B14.
13B24.4B4.9B14.9B4.17B.B2A$12.12B7.7B16.4B2.8B19.15B22.15B16.15B22.
14B12.2AB.10B26.4B5.6B16.6B5.4B2.8B.4B.B$13.11B5.9B9.A7.15B17.14B24.
14B16.14B24.13B11.A.AB3.B2A3B29.4B2.8B16.8B2.4B4.7B$16.7B3.14B6.A.A7.
14B17.13B26.13B16.13B26.10B.B2A9.A6.B2A3B30.15B12.15B5.6B$15.9B.16B5.
A.A8.13B15.2AB.10B28.10B.B2A12.2AB.10B29.3B2AB3.BA.A7.2A6.4B33.14B12.
14B6.4B$11.29B4.B2A2.2A7.10B.B2A12.A.AB3.B2A3B32.3B2AB3.BA.A10.A.AB3.
B2A3B31.3B2AB6.A16.3B34.13B12.13B5.A3B$9.32B2.BA2.A.A.A8.3B2AB3.BA.A
11.A6.B2A3B32.3B2AB6.A10.A6.B2A3B33.4B6.2A16.2B.BA32.10B.B2A8.2AB.10B
5.A.AB$8.35BABA.A.A.A8.3B2AB6.A10.2A6.4B36.4B6.2A8.2A6.4B35.3B24.B2AB
A.A33.3B2AB3.BA.A6.A.AB3.B2A3B7.A.A$8.36BA.A.A.A11.4B6.2A18.3B36.3B
26.3B32.AB.2B24.BABABA.A33.3B2AB6.A6.A6.B2A3B8.A$8.37B.A.A13.3B28.2B.
BA30.AB.2B28.2B.BA28.A.AB2AB21.A2.A.A.A.2A34.4B6.2A4.2A6.4B7.3A$6.2AB
.30B2.2B.BAB.A9.AB.2B28.B2ABA.A28.A.AB2AB26.B2ABA.A27.A.ABABAB20.4A.
2A2.A35.3B22.3B7.A$5.A.AB3.27B6.2B2AB8.A.AB2AB26.BABABA.A28.A.ABABAB
24.BABABA.A26.2A.A.A.A2.A22.A4.A.A30.AB.2B24.2B.BA$5.A5.29B7.2B9.A.AB
ABAB23.A2.A.A.A.2A26.2A.A.A.A2.A20.A2.A.A.A.2A26.A2.2A.4A20.A.A5.2A
29.A.AB2AB22.B2ABA.A$4.2A6.14B.12B7.2B9.2A.A.A.A2.A21.4A.2A2.A28.A2.
2A.4A20.4A.2A2.A25.A.A4.A24.2A37.A.ABABAB20.BABABA.A$13.12B4.9B7.B2AB
9.A2.2A.4A25.A4.A.A24.A.A4.A28.A4.A.A23.2A5.A.A60.2A.A.A.A2.A16.A2.A.
A.A.A.2A$13.4B.4B2AB6.7B8.2A8.A.A4.A27.A.A5.2A24.2A5.A.A24.A.A5.2A31.
2A61.A2.2A.4A16.4A.2A2.A2.A$14.2B3.3B2A6.9B17.2A5.A.A25.2A40.2A24.2A
100.A.A4.A24.A4.2A$13.B2AB2.2B.B7.10B24.2A195.2A5.A.A20.A.A$14.2A6.2A
7.8B230.2A20.2A$23.A8.8B$22.A9.8BA$22.2A10.7BA$36.B2.3AB!

[Vort]

I have found gun family with pretty compact arrangement of snarks.
I uploaded some of them, but it probably makes sense to upload all of them.
Example: gun_9720, 56x61, 3416:

Code: Select all

x = 56, y = 61, rule = LifeHistory
24.A2.2A$24.4A.A$29.A$22.7A.2A$21.A2.B3.A.A2.A$21.2A2.2A.AB2.2A$24.B
2AB2A$25.5B$26.3B$25.5B$24.4BAB$16.2A6.3BABA2B$.4B4.A7.A5.4BABA2B$.3B
AB3.3A5.A.AB3.4BA2B13.A$4ABA6.A5.2AB.10B10.3A$3A.A.AB3.2A7.13B8.A$.B
3.ABAB2.6B3.14B7.2A$6.A2B4.B2A19B3.5B$5.2A2B2.3B2A14B2.4B2.3B9.2A$4.B
2A2B.18B5.9B8.A.A$5.2A3.20B4.8B.B8.A$9.15B4.2A5.11B3.B.BA.2A$9.15B4.A
6.12B.B2A.A.A$10.6B2A3B3.AB3.3A3.14B2A.A.A$12.4BABA4.B2A5.A3.8B2A5B2.
A.2A$12.4BA3B4.2AB4.A.2AB.5BA2BA3B4A2.A$12.9B3.BA3.2A.A.AB.6B2A2B.BAB
2.2A$13.9B7.A2.A5.7B6.2A$13.10B8.2A5.4B.2B7.A$9.B2AB4.7B13.4B9.A$8.B
4A5.7B11.4B10.2A$8.A2BABA5.7B9.4B$6.BA.A.B2A6.7B7.4B$5.BABA3.B8.7B5.
4B$5.2AB14.7B3.4B$5.3AB8.2A4.7B.4B11.2A$5.BABAB6.A2.A4.10B11.B2A2B$7.
2A5.BA.A.A5.8B13.4B$14.3A.A7.7B14.A2B$14.3AB9.7B8.B3.ABAB$15.3B8.9B6.
2AB.A.BA$18.2B5.11B5.2ABA2B$18.3B3.4B2.7B5.3B2A$7.2A9.B2A.5B4.7B4.4B$
6.A.A8.BA2BA4B6.10B$6.A8.B.2B2A4B8.9B$3.2A.AB.B3.11B10.9B$4.A.A.2AB.
12B3.2A6.8B$4.A.A.2A14B4.A7.7B$3.2A.A2.5B2A8B4.A.AB2.11B$3.A2.4A3BA2B
A5B.B2A3.2AB.13B$4.2A2.BAB.2B2A6B.BA.A4.15B$6.2A6.7B5.A4.14B3.2A$6.A
7.2B.4B5.2A3.14B.A2BAB$7.A10.4B10.7B2A3B2.4B$6.2A11.4B11.5B2AB4.3B$
20.4B14.6B2.2ABA3.B$21.4B17.2A3.BA.A.B2A$22.3BA16.A6.A4BA$23.3BA16.3A
3.BA3B$24.3AB17.A4.A2BA!

[Vort]

The known x7 examples are not very compact. The same holds for many other pulse division coefficients. I think one could simply link to known examples for every coefficients, without showing many large patterns.

Nevertheless, they can be used for optimization:
gun_791 after, 5766:

Code: Select all

x = 62, y = 93, rule = LifeHistory
51.2A$51.2A$45.2A$40.2A3.A.A.6A$34.A5.A6.A.A5.A$34.3A4.3A2.B2A3.3A$
37.A5.A3.2B2.A$36.2A6.4B3.2A4.2A$36.4B3.10B4.A$38.13B3.BA.A$36.17B.B
2A$34.21B$34.18B2AB$34.17BA2BA$35.16BABAB$39.13BA2B$40.14B$41.7B4.4B$
29.2A6.2B2.6B5.B2A3B$29.A5.5B.5B7.A2.A.A.2A$30.3A.12B8.3A.2A.A$32.A
13B11.A$33.14B9.A2.2A$34.13B10.2A.A$34.13B$31.B3.9B2.B2A$30.3B2.9B2.B
A.A$30.3B.10B5.A$29.16B4.2A$28.3B2A3B.7B$27.4BABA10B$26.6B2A2B2A7B$
26.10B2A6B$27.17B$27.8B.8B$26.4B.B5.8B$25.4B.3B5.6B$24.4B2.B2AB4.6B6.
2A$23.4B4.2A5.7B6.A$22.4B12.8B2.3A$21.4B11.12BA$20.4B12.11B$19.4B13.
5B2A4B$18.4B14.5B2A3B$17.4B15.10B$10.2A4.4B16.9B$A8.B2AB2.4B17.9B$3A
7.3B.4B19.8B$3.A7.6B19.8B$2.2A6.2B3AB21.6B$2.3B.2B2.4BAB15.2A4.6B$2.
11BA2B16.A4.6B$.19B12.A.AB.7B$.19B13.2AB2.6B$.21B13.8B$3.19B.2B10.8B$
5.19B2A10.8B$6.18B2A11.7B$7.15B.2B13.6B$7.13B18.7B$8.13B17.7B2.2B$8.
2B2A6BA3B2.B13.12B$8.2B2A5B3A2B.B2A12.12B$9.7BA2B2A3B2A12.13B2.B$10.
5B2A2BA2B.2B6.2A5.13B.B2A$12.4B3A.2B9.A.A5.14B2A$13.4BA2B13.A8.9B.2B$
14.7B12.2A6.10B$15.3B.3B13.AB2.11B$16.7B10.3A14B3.2A$17.2BA4B8.A2.B.
12B2.BA.AB$15.2B.3A4B7.2A3.15B2A2B$12.2B.2BA2B2A5B10.17B.B2A$11.2A3B
2A2BA7B7.2AB.10B2A4.BA.A$11.2AB.2B3A5B2A2B5.A.AB2.8B.ABA6.A$12.B2.3BA
6B2A2B5.A7.4B5.A6.2A$16.13B4.2A6.5B5.3A$17.13B9.2AB.4B7.A$12.2B.15B8.
A.AB2.4B5.2A$11.2A18B7.A6.4B$11.2A19B5.2A7.4B$12.2B.19B13.4B$15.21B
12.4B$17.19B13.4B$17.19B14.4B$21.2BA11B16.4B$21.BA4B2.2B.3B17.4B$21.B
3A2B6.2A18.4B$21.5B7.A20.4B$19.2AB2.3B7.3A18.4B$18.A.AB2.B2AB8.A19.3B
A$18.A6.2A30.3BA$17.2A39.3AB!

gun_791 before, 6384:

Code: Select all

x = 114, y = 56, rule = LifeHistory
72.2A11.A$71.B2AB9.A.A$72.3B9.A.A2.2A3.A$71.B.B9.2A.2A2.A2.A.A6.2A$
71.5B8.B2.A.A3.A.A4.2B2AB$71.6B6.2ABA2.4A.A5.4B$71.8B4.2A.A.A3.A7.6B$
72.13B2.A.AB2.A7.5B$70.13B5.A.A2B.A6.6B$69.15B5.A2B.2A6.7B$69.15B4.3B
10.6B$68.15B2A.B.2B10.7B$68.14B5A10B4.6B$67.15BA4BA10B2.7B$66.16B3A2B
A10B2.7B$65.2AB3.12BA2B2A10B.9B$64.A2.A4.12B2A22B$63.A.2A5.6B3.B2.2B
2.20B4.B$63.A7.6B14.19B.B2A$62.2A6.9B14.19B2A$69.4B4.2A15.17B.B$68.4B
5.A15.17B$40.A26.4B7.3A12.17B$40.3A23.4B10.A10.2AB.15B$43.A21.2A2B21.
A.AB4.12B$42.2A20.2B2A22.A9.10BA$42.4B17.2BAB22.2A8.12BA$44.B2A15.4B
33.11BA$43.BA2B14.4B35.10B$14.2A4.2A11.2A8.2B2AB12.4B19.A17.4BA4B$14.
A2.2A2.A11.A8.3BA2B11.4B.3B.B12.3A17.5BA3B$15.3A.2A9.BA.A8.2BA5B2.18B
10.A20.5BA3B$4.A.2A11.B6.3B.B2A8.3BA22B2A2B5.B3.2A11.A8.5B$4.2A.A5.5A
B2A3.7B11.25B2A2B3.8B11.3A6.4B$13.A3.A.2A.9B12.7B.20B.5BA2B16.A5.4B$
4.3A3.A4.A3.3B.7B12.33B2ABAB15.2A4.4B$3.A2.AB.A.A2.3A4.10B11.3BA15B2.
2B.8BA3BA2B14.9B6.2A$3.3A2B.BABA4.B2.13B8.4BA12B8.8BA2B2A4B14.6B7.A$.
2A2.A2B.2B3AB2AB2.16B2.2B.15B11.7B2AB2A7B2.2B2.B3.6B5.2A.A$2.A.2A5.3A
2.2A2.18B2A15B12.9B2A3BA15BA4B4.A2.A$.A2.A5.5B3A7B.11BA2BA5B.8B13.7B.
6B2A13BABA3B3.B2A$A3.A5.5B3AB2.4B.11BA2BA5B3.8B10.14B2A9B2A3B2A9B$A.A
.2A5.3A2.2A4.15B2AB2A4B5.B3.2A9.26B2A13B$.2A2.A2B.2B3AB2AB5.16B2A4B
10.A11.8B2.29B$3.3A2B.BABA4.B6.4B6.4B.3B.B12.3A8.6B11.2B.B.17B$3.A2.A
B.A.A2.3A8.4B6.3B20.A9.5B10.3B4.15B$4.3A3.A4.A10.4B6.4B28.4B7.2A.2BA
5.15B$13.A3.A9.4B7.2A28.4B7.A.2BA.A5.13B$4.2A.A5.5A10.4B6.A27.2AB.B9.
A2.BA.A2.13B$4.A.2A21.4B6.3A23.A.AB12.A3.A.A.2A4.8B$15.A14.4B7.A23.A
13.A.4A2.AB2A6.6B$14.A.A14.4B29.2A12.A.A3.A.A2.B8.5B$15.A16.4B42.A.A
2.A2.2A.2A9.B.B$33.3BA42.A3.2A2.A.A9.3B$34.3BA49.A.A9.B2AB$35.3AB49.A
11.2A!

[confocaloid]

[...]
gun_791 after, 5766:

Code: Select all

x = 62, y = 93, rule = LifeHistory

[...]

gun_791 in 113-by-47 (bounding box area 5311 cells), using a different period multiplication mechanism that involves a repeated two-glider collision catalysed by a Thessalonic constellation:

Code: Select all

x = 113, y = 47, rule = B3/S23
66b2o$67bo$67bobo$68b2o4$78bo$76bo3bo$81bo$45b2o18b2o7b2o5b2o$45bo19b
2o7bo8bo9b2o4b2o$43bobo28bo5bo3bo8b2o4b2o$43b2o30b3ob2o3bo$80b4o$39bo
42bo10b2o$38b3o52b2o$37bo2b2o70bo$37b3o70b3o$109bo$30b2o14b2obo32b2o
25b2o$12b2o4b2o10b2o14b2ob3o8bobo19b2o10bo$12b2o4b2o18b2o12bo7b2o31b4o
$27b2o8bobo2bobo6b2o8bo30bo3b2ob3o$26bo2bo7bo4bobo31b2o4b2o8bo3bo5bo$
18b2o7b2o6bo2bo4bo32b2o4b2o9bo8bo7b2o$18b2o14bo2bo33b2o21b2o5b2o7b2o$o
33bo3b3o30bo23bo$3o10b2o19b2o33bobo24bo3bo$3bo4b3o3bo54b2o27bo$2b2o7bo
2bo14b2o$10bo2bo6b2o7b2o$11bo7bo2bo$9bobo8b2o85b2o$9b2o18b2o4b2o70bobo
$b2o14b2o10b2o4b2o72bo$b2o14b2o90b2o$46b2o21b2o$9b3o35bo3b2o16bobo$7b
2o2bo32b3o5bo18bo$8b3o33bo4b3o19b2o$9bo39bo2$4b2o$3bobo59bo$3bo62bo$2b
2o60b3o!
#C [[ MAXGRIDSIZE 9 THEME Catagolue KILLGLIDERS ]]

edit 1: submissions processed in jobs/7286388440 (93-by-62) and jobs/7288936662 (113-by-47).

[Vort]

I decided to check if periodic splitters can be used for gun optimization.
Good result emerged right away: gun_316 was reduced from 5236 to 4200:

Code: Select all

x = 60, y = 70, rule = LifeHistory
34.2A$33.A.A$27.2A4.A$25.A2.A2.2A.4A$25.2A.A.A.A.A2.A$28.A.ABABAB$28.
A.AB2AB$29.AB.2B$32.3B$32.4B6.2A$30.3B2AB6.A$30.3B2AB3.BA.A$28.10B.B
2A$27.13B$26.14B$25.15B$24.4B2.8B$9.A13.4B5.6B$9.3A10.4B4.7B2A$12.A8.
4B5.2A4.BABA$11.2A7.4B7.A5.A3B$11.5B3.4B5.3A7.4B$13.3B2.4B6.A10.4B$3.
2A7.9B19.4B$3.A8.8B21.4B10.2A$2A.A.B3.10B9.A13.4B9.A$A2.3AB.2B2A7B8.A
.A2.A10.4B10.A$.2A2.BA3B2A7B8.A.4A4.2A5.4B5.5A$3.4A12B9.A9.A5.4B4.A$
3.A.2B3.7B.B2A4.A4.5A3.A.AB.7B2.B3A$4.3AB2.7B.BA.A3.5AB4.A3.2AB.7B3.
2B.A$7.A4.4B5.A9.3A.A5.12B4A$2.5A5.4B5.2A4.A2B.B.BA6.7B2A3BAB2.2A$2.A
10.4B9.A.ABA2BA7.7B2A2B.B3A2.A$4.A9.4B8.2A.B2A9.10B3.B.A.2A$3.2A10.4B
11.B9.8B8.A$16.4B10.B3.B4.9B7.2A$17.4B4.2B.3B2.9B2.3B$18.4B2.7B.9B3.
5B$19.4B.16B7.2A$20.20B7.A$20.21B7.3A$20.20B10.A$19.21B$18.23B$17.2A
23B$17.2A19B.4B$18.17B5.4B$19.16B6.4B$19.18B5.4B$20.8B2A8B5.4B$19.8BA
2BA7B6.4B$18.10BABA6B8.4B$18.11BA8B.BAB4.4B$19.18B.B2A2B4.4B$14.2A3.
17B3.BA.BAB3.4B$14.A3.17B4.4B2A4.4B$16.A.2AB.14B4.2A.2A5.4B$15.2AB2AB
5.B2.B2.B2AB5.BA2.B5.4B$18.B6.3B5.2A7.B3A6.4B$15.2A.2A5.B2AB13.A.2B2.
2A3.4B$16.A.A7.2A10.4BA.A.A2.A4.4B$16.A.A11.2A6.4A.2A.2A7.4B$17.A11.A
3B.BA.BA2.A2.A.A9.3BA$29.A.5BAB2A.3A2.A10.ABA$27.A.A.3A.AB.A.A3.2A12.
2A$27.2A.A.B4.2A.A.2A15.B$30.A7.A2.A.A$30.2A4.A.A$36.2A!

[Vort]

Dots located in unusual places usually hide something interesting - either 1. they point to overlooked/outdated versions, which can be optimized right away; or 2. they can give ideas how other places can be optimized.
As an example, here is cluster of 3 dots:

gun_coll_area_1k_v1_marked.png (22.83 KiB) Viewed 12284 times

This is gun_463, gun_479 and gun_503.
Before my changes, gun_503, for example, looked like this:

Code: Select all

x = 132, y = 57, rule = LifeHistory
28.2A30.2A44.A11.2A$20.2A5.A.A30.A.A5.2A35.A.A9.B2AB$20.A.A4.A34.A4.A
.A27.A3.2A2.A.A9.3B$22.A2.2A.4A26.4A.2A2.A25.A2.A.A2.A2.2A.2A9.B.B$
21.2A.A.A.A2.A26.A2.A.A.A.2A15.2A5.3A2.A.A3.A.A2.B8.5B$22.A.ABABAB30.
BABABA.A15.B2AB3.A6.A.4A2.AB2A6.6B$22.A.AB2AB32.B2ABA.A16.2B4.2A7.A3.
A.A.2A4.8B$23.AB.2B34.2B.BA18.7B6.A2.BA.A2.13B$26.3B32.3B20.6B7.A.2BA
.A5.13B$26.4B6.2A14.2A6.4B19.8B6.2A.2BA5.15B$24.3B2AB6.A16.A6.B2A3B
16.9B10.3B4.15B$9.A14.3B2AB3.BA.A16.A.AB3.B2A3B14.12B10.2B.B.17B$9.3A
10.10B.B2A18.2AB.10B11.12B4.29B$12.A8.13B22.13B11.12B2.16B2A13B$11.2A
7.14B22.14B10.12B2.16B2A14B$11.5B3.15B22.15B8.14B.21B3A3B3.B2A$13.3B
2.4B2.8B26.8B2.4B6.37BA4B4.A2.A$3.2A7.9B5.6B26.6B5.4B4.4B2.21B2.2B2.B
3.2BA3B5.2A.A$3.A8.8B4.9B24.9B4.4B2.4B4.17B14.6B7.A$2A.A.B3.10B5.2A4.
4B22.4B4.2A5.8B4.16B14.9B6.2A$A2.3AB.2B2A7B6.A5.4B20.4B5.A7.6B5.15B
15.2A4.4B$.2A2.BA3B2A7B3.3A7.4B18.4B7.3A5.4B5.17B15.A5.4B$3.4A12B3.A
10.4B16.4B10.A4.6B5.8B.7B12.3A6.4B$3.A.2B3.7B.B2A.A11.4B14.4B15.8B5.
6B4.3B.B2A10.A8.2BA2B$4.3AB2.7B.BA.A.2A10.4B12.4B15.4B2.4B5.4B9.BA.A
17.4B2A3B$7.A4.4B5.A2.A11.4B10.4B15.4B4.4B4.6B10.A17.3B3A3B$2.5A5.4B
5.2A14.4B8.4B15.4B6.4B4.B.B2A.A8.2A16.9B$.A2.A8.3BA21.4B6.4B15.4B8.4B
5.B2AB3A23.10B$.2A11.3BA21.4B4.4B15.4B10.4B6.B4.A21.10B2A$15.3AB21.4B
2.4B15.4B12.4B4.2A.3A12.2A8.9BA2BA$16.4B21.8B15.4B14.4B4.A.A15.A9.10B
A$17.4B21.6B4.A10.4B16.4B3.A.A15.A.AB4.8BA2BA$18.4B21.4B5.3A7.4B18.4B
3.A6.A10.2AB.10BA4B$19.4B19.6B7.A5.4B20.4B7.3A12.17B$20.4B10.A6.8B5.
2A4.4B22.4B5.A15.17B$21.4B7.3A5.4B2.4B4.9B24.4B4.2A15.17B.B$22.4B5.A
7.4B4.4B5.6B18.2A6.9B14.19B2A$23.4B4.2A5.4B6.4B2.8B19.A7.6B14.19B.B2A
$24.9B4.4B8.15B17.A.2A5.6B3.B2.2B2.20B4.B$25.6B5.4B10.14B18.A2.A4.36B
$25.8B2.4B12.13B19.2AB3.27B.9B$23.15B14.10B.B2A18.14B2A16B2.7B$23.14B
17.3B2AB3.BA.A18.13B2A16B2.7B$23.13B18.3B2AB6.A19.29B4.6B$21.2AB.10B
21.4B6.2A18.17B.B.2B10.7B$20.A.AB3.B2A3B23.3B28.15B4.3B10.6B$20.A6.B
2A3B20.AB.2B29.15B5.A2B.2A6.7B$19.2A6.4B21.A.AB2AB29.13B5.A.A2B.A7.5B
$28.3B21.A.ABABAB30.13B2.A.AB2.A8.6B$29.2B.BA17.2A.A.A.A2.A27.8B4.2A.
A.A3.A7.9B$28.B2ABA.A17.A2.2A.4A27.6B6.2ABA2.4A.A5.2A.7B$27.BABABA.A
15.A.A4.A31.5B8.B2.A.A3.A.A5.A5.4B$25.A2.A.A.A.2A14.2A5.A.A29.B.B9.2A
.2A2.A2.A.A2.3A7.4B$25.4A.2A2.A23.2A30.3B9.A.A2.2A3.A3.A10.4B$29.A4.A
.A52.B2AB9.A.A23.3BA$27.A.A5.2A53.2A11.A25.ABA$27.2A101.2A!

After examining lower periods equal to 7 (mod 8 ), I found gun_431:

Code: Select all

x = 80, y = 64, rule = LifeHistory
47.2A.A$41.A.2A.A.A.3A$41.2A.A.A.A4.A$45.A.A.ABABA$47.A.A.2A4.2A$39.
2A5.ABA4B4.A$38.B2AB2.3BA2B4.BA.A$39.2B2.5B4.B.B2A$40.2B.6B2.4B$39.
16B$38.6B2A9B$37.6BA2BA9B$36.8B2A6B.4B13.A$35.16B3.4B10.3A$34.15B6.4B
8.A$33.4B.11B7.4B7.2A$32.4B3.10B8.4B3.5B$31.4B5.11B7.4B2.3B$30.4B5.2B
2.8B.2A5.9B7.2A$29.4B6.2AB2.7BA.A6.8B8.A$28.3AB3.2A.A.A5.B.2B.2A8.10B
3.B.A.2A$27.3BA4.A.2A.A.A2.3B2.B10.7B2A2B.B3A2.A$26.3BA11.2A2.B2AB2.
4A6.7B2A3BAB2.2A$25.4B17.2A4.A2.A5.12B4A$24.4B22.A3.2A3.2AB.7B3.2B.A$
23.4B23.2A6.A.AB.7B2.B3A$22.4B32.A5.4B4.A$21.4B32.2A5.4B5.5A$20.4B39.
4B10.A$19.4B39.4B9.A$18.4B39.4B10.2A$17.4B17.2A.2A17.4B$16.4B19.A.A
17.4B$8.2A5.4B15.2A.A5.A.2A11.4B$6.2B2AB3.4B5.A9.A.A.2A3.2A.A.A9.4B$
6.4B3.4B4.3A8.A2.B2.BA.AB2.B2.A7.4B$6.10B4.A11.7AB.B7A6.4B$6.9B.B3.2A
14.3B.B.3B9.4B$A6.15B12.3AB.3B.B3A6.4B$3A4.13B13.A.BA3BA3BAB.A4.4B$3.
A.15B13.2A3.BABAB3.2A3.4B$2.A.17B17.BABAB7.4B$2.2A19B13.B.2BA2B6.4B$
4.A21B2.2B3.5B.B.B6.4B$5A40B2.4B$A4.2B.7B.34B$3.2A3.24B2A15B$3.A4.24B
2A14B$.A.A3.40B$.2A5.7B.2B6.4B.3B2.B2.9B$7.8B10.3B8.9B$8.6B12.4B6.9B
5.2A$8.6B14.2A6.9B4.A.A$2.2A4.7B13.A5.2AB.3B2A2B4.A$2.A.A2.9B13.3A.A.
AB.2BA2BA2B.3A$4.A2.10B14.A.A5.BABA3BAB2.2A$4.2A12B14.2A3.4BA4B4A2.A$
8.AB5.4B18.2A5.4B.A.2A$4.5AB6.4B18.A7.2A.A$4.A6.A5.4B14.3A9.A.A$7.5A
6.4B13.A9.A.A.2A$7.A11.3BA22.2A$10.2A8.3BA$10.2A9.3AB!

Despite enlargement because of trombone slide expansion, such design allowed to get lower area than was present before.
If my calculation is correct:
gun_463: 6555 -> 5712
gun_479: 7227 -> 6020
gun_503: 7524 -> 6497

upd. New version of the chart (with primes marked red):

gun_coll_area_1k_v2.png (20.43 KiB) Viewed 12263 times

[Vort]

What is that eater 1 doing?

Sorry, I forgot to remove it when updating the previous gun to the reduced version, the old one was like this:

I cloned it to gun_1992 and gun_9960 and only then noticed
However, I "fixed" this problem in gun_166 itself (2520 -> 2365):

Code: Select all

x = 43, y = 55, rule = LifeHistory
29.2A$26.2A2.A2.2A$24.3A.2A4.A$23.A4.B5.A.2A3.2A$24.3AB2AB4.A.A4.A$
26.A.2AB6.A.3A$14.2A14.4B2.2A.A$13.B2A2B12.10B$14.4B8.B2.7B.2B$13.5B.
B5.13B$11.10B2.3B2A11B$11.6B.7BA2BA2BA7B$10.14BA4BA9B$11.13BAB2A5B3A
2B$11.5BA6B2A6B2ABAB$11.5BA15B2A$10.BA4BA10BA4BAB$10.2A15BA5B$8.BAB2A
6B2A6BA5B$6.2B3A5B2ABA13B$5.9BA4BA14B$5.7BA2BA2BA7B.6B$5.11B2A3B2.3B.
6B$6.13B5.B2.D2B2D2B$5.2B.7B2.B9.B3DB2AB2.2A.A$4.10B11.3BAD4A3BA.2A$
4.A.2A2.4B11.B2A2B2A4B$2.3A.A6.B2A.A7.3B2ACD4B$.A4.A.A4.B2AB3A5.5B2D
2BA$2.3A2.A.A5.B4.A4.6BABAB$4.2A.A2.A3.2A.3A5.6B2AB$6.A.2A5.A.A7.2B3A
2B2A$6.A8.A.A8.B2A3B2A$7.3A6.A8.2BA5B$10.A14.2B2ABAB$9.2A6.B7.3B3AB$
9.5B.4B6.4BA2B$11.9B3.B.8B$9.12B.12B$9.26B$7.28B$3.2A2.28B$3.A2.A28B$
4.2ABA27B$.3A2.AB.20B3D3B2A$A3.2A2B2.19BD5BA.A$.2A.B.B3.18B3D2B4.A$2.
A.2AB2.5B3.15B5.2A$2.A.BAB.5B6.5B.6B$3.2A4.5B6.3B4.6B$7.8B16.2A$7.2A
3.4B15.A$8.A4.3BA15.3A$5.3A6.3BA16.A$5.A9.3AB!

upd. gun_9960 is modified to use 166 x 15 x 4 multiplication instead of 166 x 12 x 5.

[hotcrystal0]

However, I "fixed" this problem in gun_166 itself (2520 -> 2365):

Obvious 1-column reduction:

Code: Select all

x = 44, y = 55, rule = LifeHistory
30.2A$27.2A2.A2.2A$25.3A.2A4.A$24.A4.B5.A.2A3.2A$25.3AB2AB4.A.A4.A$27.
A.2AB6.A.3A$15.2A14.4B2.2A.A$14.B2A2B12.10B$15.4B8.B2.7B.2B$14.5B.B5.
13B$12.10B2.3B2A11B$12.6B.7BA2BA2BA7B$11.14BA4BA9B$12.13BAB2A5B3A2B$12.
5BA6B2A6B2ABAB$12.5BA15B2A$11.BA4BA10BA4BAB$11.2A15BA5B$9.BAB2A6B2A6B
A5B$7.2B3A5B2ABA13B$6.9BA4BA14B$6.7BA2BA2BA7B.6B$6.11B2A3B2.3B.6B$7.13B
5.B2.D2B2D2B$6.2B.7B2.B9.B3DB2AB2.2A.A$5.10B11.3BAD4A3BA.2A$5.A.2A2.4B
11.B2A2B2A4B$3.3A.A6.B2A.A7.3B2ACD4B$2.A4.A.A4.B2AB3A5.5B2D2BA$3.3A2.
A.A5.B4.A4.6BABAB$5.2A.A2.A3.2A.3A5.6B2AB$7.A.2A5.A.A7.2B3A2B2A$7.A8.
A.A8.B2A3B2A$8.3A6.A8.2BA5B$11.A14.2B2ABAB$10.2A6.B7.3B3AB$10.5B.4B6.
4BA2B$12.9B3.B.8B$10.12B.12B$10.26B$3.2A3.28B$2.A2.A2.28B$3.2A2.A28B$
5.2ABA27B$3.2A2.AB.20B3D3B2A$2.A2.2A2B2.19BD5BA.A$2.2A.B.B3.18B3D2B4.
A$3.A.2AB2.5B3.15B5.2A$3.A.BAB.5B6.5B.6B$4.2A4.5B6.3B4.6B$8.8B16.2A$8.
2A3.4B15.A$9.A4.3BA15.3A$6.3A6.3BA16.A$6.A9.3AB!

[EvinZL]

Here is a reduction of gun_7802 to 72-by-52 (down from 77-by-49). The gun is shown in the canonical form (width >= height, the output glider stream goes to SE, the output glider will make a cell outside the bounding box of the gun alive in the next generation):

Code: Select all

x = 72, y = 52, rule = B3/S23
15b2o3bo$16bo2bobo$14bo4bobo$14b5obo21b2o$18bo23bobo$7b2o5b2o3bo24bo$
8bo5b2o4bo23b2o$2o6bobo8b2o$bo7b2o31b4o$bobo38bo2bo$2b2o39bo$40b3o$16b
o23bo$15b3o5b2o$14b5o4b2o$2o11bo5bo30bo$bo10b2o2bo24bob2o4bobo12b2o$bo
bo7b3obobo21b3ob2o4bobo2b3o7b2o$2b2o8b2o2bo21bo11bo$13bo7b2o16b3ob2o7b
o5bo$14b4o3bobo17bobo8bo5bo$15b3o5bo17bobo8bo5bo$16bo6b2o17bo$2o$2o$
68bo$42b2o8bo5bo8bobo$43bo8bo5bo8bobo$43bobo6bo5bo7b2ob2o$14b2o28b2o
14bo9bo$4b2o8bobo37b3o2bobo4b2obo$4bo4b2o5bo42bobo4b2obobo$5bo3b2o5b2o
42bo9b2o$6bo27b2o6b2o$4bob5o23b2o6b2o$3bobo4bo7b2o50bo$3bobo2bo10bo15b
o32b3o$4bo3b2o9bobo12bobo30bo$20b2o11bo3bo27bo2bo$25bo7bo3bo27b4o$24bo
bo6b2ob2o$25b2o38b2o$44bo21bo$43bobo20bobo$44b2o21b2o4$37b2o$37bobo25b
o$30b2o7bo26bo$30b2o7b2o23b3o!
#C [[ MAXGRIDSIZE 9 THEME Catagolue KILLGLIDERS ]]

70 by 50

Code: Select all

x = 70, y = 50, rule = B3/S23
15b2o3bo$16bo2bobo18b2o$14bo4bobo18bobo$14b5obo21bo$18bo23b2o$7b2o5b2o
3bo$8bo5b2o4bo19b4o$2o6bobo8b2o19bo2bo$bo7b2o30bo$bobo34b3o$2b2o10bo
23bo$13bobo$13bo$14bo8b2o23bo$23b2o14bob2o4bobo12b2o$2o35b3ob2o4bobo2b
3o7b2o$bo13b3o18bo11bo$bobo11bobo19b3ob2o7bo5bo$2b2o11bo2bo20bobo8bo5b
o$16b2o3b2o16bobo8bo5bo$21bobo16bo$23bo$23b2o$2o64bo$2o38b2o8bo5bo8bob
o$41bo8bo5bo8bobo$41bobo6bo5bo7b2ob2o$42b2o14bo9bo$52b3o2bobo4b2obo$3b
2o52bobo4b2obobo$2bobo8b2o43bo9b2o$2bo5b2o4bo17b2o6b2o$b2o5b2o3bo18b2o
6b2o$12bo3b2o50bo$8b5obo2bo15bo32b3o$8bo4b3obobo12bobo30bo$9b3o4bob2o
11bo3bo27bo2bo$11bob2obo6bo7bo3bo27b4o$12b2ob2o5bobo6b2ob2o$23b2o38b2o
$42bo21bo$41bobo20bobo$42b2o21b2o4$35b2o$35bobo25bo$28b2o7bo26bo$28b2o
7b2o23b3o!
#C [[ MAXGRIDSIZE 9 THEME Catagolue KILLGLIDERS ]]

EDIT: gun_2656 from 3780 to 3480

Code: Select all

x = 58, y = 60, rule = B3/S23
7bo2bo19bo2bo$6bo4bo17bo4bo$5bo5bo17bo5bo$4b2ob2o7b2o5b2o7b2ob2o$3bo7b
o4b2o5b2o4bo7bo$2bo2b3obobo17bobob3o2bo17b2o$3b3obob2o6bo5bo6b2obob3o
17bobo$16bobo3bobo32bo$3b3obob2o4bo3bobo3bo4b2obob3o$2bo2b3obobo2b2o3b
obo3b2o2bobob3o2bo$3bo7bo2b2o9b2o2bo7bo$4b2ob2o23b2ob2o$5bo5bo4b2o5b2o
4bo5bo$6bo4bo17bo4bo$7bo2bo19bo2bo2$17b2o3bo$16bo2bo3b2o$6bo3bo5bo3b2o
3bo27b2o$5bobobobo5b2ob2o3bo26bobo$6b2ob2o11b3o27bo$34b2o15b2o$34bo$2b
2o9b2o17bobo16b4o$2bob4ob4obo14bob3o17bo2bo$3bo3bobo3bo14b4o21bo$3bo3b
obo3bo4b2o3b2obobob2o22b3o$4b3o3b3o5b2o2bo2bob5o24bo$22bobob2o2bo$23bo
4b2o10bo$40b3o13b2o$17bob2o4bo26b2obobo$15b3ob2o3bobo25b2obo$14bo10bo
4b2o5b3o4bo11bo$15b3ob2o8bobo6b2o3bobo6b2ob2o$17bobo9bo9bo2bobo8bobo$
17bobo8b2o10b2ob2o8bobo$18bo22b3o10bo$42bo$40bo$28bo10b3o$27bobo8b2ob
2o$27bobo8bobo2bo$25b3ob2o6bobo3b2o$24bo13bo4b3o$25b3ob2o19b2o$27bob2o
19b2o$40b3o$42bo2$26bo$26b3o$29bo$28bo2bo$28b4o2$30b2o$30bo$2o26bobo$
2o26b2o!
#C [[ MAXGRIDSIZE 9 THEME Catagolue KILLGLIDERS ]]

old build:

Code: Select all

#C [[ GRID MAXGRIDSIZE 14 THEME Catagolue ]]
#CSYNTH gun_2656 costs 3780 cells.
#C period 2656 fullperiod 2656 bbox 70 by 54
#CLL state-numbering golly
x = 70, y = 54, rule = LifeHistory
57.2B$40.8B8.4B$39.5B2A3B6.B3AB$39.4BA2BA2B6.A4B$38.8B2A2B5.A2BAB$
37.3BA5B3A2B3.6B$38.BA.A3BAB.AB5.ABA3B$40.2A3B3A6.BABA3B$54.BA2BAB
$40.2A3B3A6.6B$38.BA.A3BAB.AB4.3A4B$37.3BA5B3A2B3.2ABA3B$28.2A8.8B
2A2B4.B3A2B2.B$27.A.A9.4BA2BA2B5.2BA3B.B2A$27.A11.5B2A3B5.BA6B2A$
25.B2A12.11B3.A2BA2B.2B$20.3B.2B21.BABAB.BA3BAB$19.7B4A17.8BA3BAB$
19.5B.BA2.A17.3BA10B$18.8B2.A18.6B.6B$18.8B3.3A14.10BA3B$12.B3.11B
4.A14.BA3BA8B$10.17B20.BA3BAB.BABAB$10.9B2A6B17.2B.2BA2BA3.11B$7.B
.9B2AB2A6B14.2A6BAB5.3B2A5B$6.2A7B4AB3A2B2.2A.A12.2AB.3BA2B5.2BA2B
A4B$6.2A5B2AB2A2B2A2B3.2AB3A11.B2.2B3AB4.2B2A8B$7.9B2AB2A3B4.B4.A
12.3BAB2A3.2B3A5BA3B$7.4B.4B2ABA5B2.2A.3A13.4B3A4.BA.BA3BA.AB$10.
7BABA4B4.A.A16.6B6.3A3B2A$9.5BA3BA4B5.A.A16.BA2BAB$10.5B3A5B6.A16.
3BABAB6.3A3B2A$11.11B24.3BABA5.BA.BA3BA.AB$11.11B25.6B3.2B3A5BA3B$
3.A6.5B3A5B24.BA2BA5.2B2A8B$2.A.A5.4BA3BA5B23.4BA6.2BA2BA4B$2.A.A
4.4BABA7B2.7B.B13.B3AB6.3B2A5B$.2A.2A2.5BAB2A4B4.13B.B7.4B8.8B$.A
2.B4.3B2AB2A28B.4B$2.AB2A3.2B2A2B2AB2A29B$A.A.2A2.2B3AB4A32B$2A2.
6B2AB2A12B2A22B$6.6B2A13B2A16B3.4B$6.28B3.2B2.4B4.4B$.A4.11B3.B2.
10B8.4B5.4B$.3A3.8B9.6B11.2B2AB5.4B$4.A2.8B10.3B12.A.A2BAB5.4B$3.A
2.AB.5B11.B12.3A.A.2AB6.4B$3.4A7B10.2A11.A4.A2.4B5.4B$7.2B.3B11.A
13.3A.A4.2A6.4B$5.2AB17.A14.2A5.A8.4B$5.A18.2A22.3A6.3BA$3.A.A44.A
7.3BA$3.2A54.3AB!

[Vort]

Clearance according to which direction / geometric constraints, exactly?
It is certainly possible to change the geometry, which may or may not be considered "improved clearance" depending on your goal(s):
...

Goal is smaller guns.
More specifically, smaller by bounding box area, as this is default metric for Catagolue.
More specifically, guns with period 166 * x, where x is from 7 (smallest possible period of glider gun divided by 2) to 60 (produces largest period accepted by Catagolue).
Some of these guns are small enough already, so there is no sense in trying to find sparking eater which will allow to optimize them further.

gun_7802 (x47) is good test example, which can guide searches of glider-to-dot-spark converters.
If gun with specific converter applied is smaller, then, most likely, such converter is better.

Another interesting multiplier to try is x12.
gun_1992 have area of 3780 right now.
This failed multiplication attempt have area of 2196:

Code: Select all

x = 61, y = 36, rule = LifeSuper
39.Q$37.3Q$15.A20.Q15.2A$14.A.A20.5Q10.A3.A.2A$8.2A4.A.A25.Q5.2A3.5A.
A$8.A4.2A.3A12.B3.4Q2.2Q5.A2.A.A$2A3.2A.A5.B4.A3.A6.2QB.Q2.BQ11.2A2.A
2B2A$A4.A.A4.B2AB3A4.3A4.Q4BQ4B5.A6.2A2BABA$.3A.A6.B2A.A9.A4.4BQB.2B
5.3A4.A.A3B$3.A.2A2.4B12.AB4.Q2B3.4B7.A4.A2B$3.10B12.A3BAB7.4B5.2A5.B
$4.2B.7B2.B10.3BAB7.4B4.4B3.A$5.13B5.B2.BAB2A2B7.B3A5.3B3A$4.16B2.3B.
8B7.A9B5A$4.7BA13B.9B7.A7B2A5B$4.7B2A23B7.6B3A5B$5.5BABA2BA14BAB.4B7.
6B2A5B$7.4BAB3A15BA2.4B6.7B3AB.B2A$9.2B2A2BAB2A4B2A2BA4B3.4B4.G2.4B.B
2AB.BA.A$9.2BA18BA2B3.4B2.2G7.2BA5.A$10.4BA2B2A4B2ABA2B2A2B4.4B.2G15.
2A$10.A15B3ABA4B3.4BG$10.BA14BA2BABA5B2.4B$9.20B2A7B2.4B$10.6B.13BA7B
3.4B$10.10B2.16B4.4B$12.5B.B5.13B6.4B$13.4B8.B2.7B.2B6.4B$12.B2A2B12.
10B6.4B$13.2A14.4B2.2A.A7.4B$25.A.2AB6.A.3A6.4B$23.3AB2AB4.A.A4.A6.4B
$22.A4.B5.A.2A3.2A7.4B$23.3A.2A4.A16.4B$25.2A2.A2.2A17.4B$28.2A22.4B!

So replacement converter (with suitable repeat time) can make area almost twice larger and still produce competitive gun.

As for why I was talking about specific glider direction: I think all possibilities should be explored.
1. There may be globally better converters for some direction. 2. There may be generally worse converter for some direction, but better suited for some specific gun.

[EvinZL]

Here's a small decent clearance g-to-dot, originally by apg I think

Code: Select all

x = 56, y = 44, rule = B3/S23
26bo$25bobo$25bobo$23b3ob2o8bo$22bo9b2o3b2o15b2o$23b3ob2o3b2o3b2o15bo$
25bob2o9bo2b2obo7bobo$44b3o5b2o$31b2o6b2o3b4o$30bo2bo5bo5bo2bo$15bo11b
o3bobo5bo3bo2b2o$14bobo9bobo3bo7bo2bo2bo$8b2o4bobo10bo3bobo$8bo4b2ob3o
12b2o$2o3b2obo10bo3bo6bob3o7b2o$o4bobo5b2ob3o4b3o4bobob2o7bo4bo$b3obo
7b2obo9bo4b4o5b3o4bob2o$3bob2o18b2o5b4o4bo6bob2ob2o$35b2o8b2o2b2ob2o$
35bo7bo2bobo$36b3o4b2o3b5obo$38bo8bo3bob2o$47b2o$16bo9bo$15bob2o6b2o$
16bob2o4b3o$12bo4bob2o2bo5b2o$12bo5b2o2b2o5bo$11b2o5bo2b2obo4bo$15b3o
4b2obo$15b2o6b2obo$15bo9bo5$13b2o$13b2o20b2obo$25bob2o7bob3o$23b3ob2o
5bobo4bo$22bo10bob2o3b2o$23b3ob2o4bo19bo$25b2o2bo2b2o20bo$28b2o22b3o!

This gives gun_1992 in 2464

[Vort]

Here's a small decent clearance g-to-dot, originally by apg I think
...
This gives gun_1992 in 2464

Nice find. Thank you.
It allows to optimize gun_3320 as well (2950 -> 2773):

Code: Select all

x = 59, y = 47, rule = LifeHistory
55.2A$54.BA2BA$40.A14.4B$26.E13.3A12.A2BA$25.E.E15.A10.A2BA$25.E.E14.
2A10.ABAB$23.3E.2E13.5B6.2BAB$22.E4.B4.2E10.3B3.B2.4B$23.3EB2C3B2CB7.
10B.2B2AB$25.E.2C.4B8.11B2.2A$30.3B7.10BA2B$30.B2CB5.A9B3A2B$30.C2BCB
3.BABA6BA2BA2B$15.A11.E2.BCBCB2.2B2A7B3AB$14.A.A9.E.E.2BC7B2.7BA2B$8.
2A4.A.A10.E2.2B.6B5.7B$8.A4.2A.3A11.8B4.7B2.B2AB$2A3.2A.A5.B4.A3.A5.B
2C5B5.2A7.4A$A4.A.A4.B2AB3A4.3A4.2C4B7.A6.AB2ABA$.3A.A6.B2A.A9.A4.4B
5.3A5.3A.2B.3A$3.A.2A2.4B12.2A4.D5B3.A6.A3.A2.A3.A$3.10B12.6B2.D.CE9.
A.4AB.2A.2A$4.2B.7B2.B10.5B3.E10.A.B2.2B2.A.A$5.13B5.B2.7B3.3E5.A.A.
3AB3.A.A$4.16B2.3B.8B4.E5.2A.A.2AB4.A$4.21B.9B12.A.B$4.12BA9BA9B11.2A
$5.10BAB2A6B2A5B.4B$7.9BAB2A4B3A5B2.4B$9.3BA4BAB2A2BA5B2AB3.4B$9.3BA
5B2A2B2A5BA3B3.4B$10.B2A5BA2B2ABA4BA3B4.4B$10.5B3A4B2ABA9B3.4B$10.5B
2A6B2ABA10B2.4B$9.6BA9BA12B2.4B$10.6B.21B3.4B$10.10B2.16B4.4B$12.5B.B
5.13B6.4B$13.4B8.B2.7B.2B6.4B$12.B2A2B12.10B6.4B$13.2A14.4B2.2A.A7.4B
$25.A.2AB6.A.3A6.4B$23.3AB2AB4.A.A4.A6.4B$22.A4.B5.A.2A3.2A7.4B$23.3A
.2A4.A16.3BA$25.2A2.A2.2A17.3BA$28.2A22.3AB!

upd. Actually, x5 x4 version with proper snark placement is better (2613). However, x20 may have more possibilities for improvements.

[confocaloid]

I suggest to move recent discussion of reductions of existing gun mechanisms and designs, into the thread Execution of Old Guns by Variable-Speed Firing Squad.

T̶h̶i̶s̶ ̶t̶h̶r̶e̶a̶d̶ (edit: Gun Discussion Thread) is intended for new gun mechanisms or designs. For example, there was a post "Can we get a p35 gun by rubbing together two of these?" that got buried in a flood of "down from" reduction posts.

Edit by Sokwe: posts moved

[Vort]

Here's a small decent clearance g-to-dot, originally by apg I think
...
This gives gun_1992 in 2464

xs20_gbbgra96z11 instead of Eater 2 allows for 1 row reduction (2464 -> 2408):

Code: Select all

x = 56, y = 43, rule = LifeHistory
28.2A$25.2A2.A$23.3A.2A8.AB$22.A4.B4.2A2.B2A15.2A$22.A.2AB2A3B2AB2.2A
B6.3B5.A$23.A.A.2A.4B3.BA2.2ABA.4B.BA.A$30.3B6.5B3A3B.B2A$30.B2AB5.2A
3B4A4B$30.A2BAB3.BA5BA2BA3B$15.A11.A2.BABAB2.2BA3BA2B2A4B$14.A.A9.A.A
.2BA7BA2BA2BA4B$8.2A4.A.A10.A2.BA.A5B5.6B$8.A4.2A.3A11.B2A5B4.4B3.B$
2A3.2A.A5.B4.A3.A5.BAB3A2B5.2A5.B$A4.A.A4.B2AB3A4.3A4.ABAB2A7.A4.A2B$
.3A.A6.B2A.A9.A4.4A5.3A4.A.2A2B$3.A.2A2.4B12.2A4.B4AB3.A6.AB2AB2A$3.
10B12.6B2.B.2A8.2A2.2AB2A$4.2B.7B2.B10.5B3.A7.A2.A.A$5.13B5.B2.7B3.3A
4.2A3.5A.A$4.16B2.3B.8B4.A8.A3.A.2A$4.21B.9B12.2A$4.12BA9BA9B$5.10BAB
2A6B2A5B.4B$7.9BAB2A4B3A5B2.4B$9.3BA4BAB2A2BA5B2AB3.4B$9.3BA5B2A2B2A
5BA3B3.4B$10.B2A5BA2B2ABA4BA3B4.4B$10.5B3A4B2ABA9B3.4B$10.5B2A6B2ABA
10B2.4B$9.6BA9BA12B2.4B$10.6B.21B3.4B$10.10B2.16B4.4B$12.5B.B5.13B6.
4B$13.4B8.B2.7B.2B6.4B$12.B2A2B12.10B6.4B$13.2A14.4B2.2A.A7.4B$25.A.
2AB6.A.3A6.4B$23.3AB2AB4.A.A4.A6.4B$22.A4.B5.A.2A3.2A7.4B$23.3A.2A4.A
16.3BA$25.2A2.A2.2A17.3BA$28.2A22.3AB!

upd: xs19_3pm0mmzw343 works as well.

Code: Select all

x = 17, y = 21, rule = LifeHistory
6.2E$3.2E2.E$.3E.2E$E4.B4.2E$.3EB2C3B2CB$3.E.2C.4B$8.3B$8.B2CB$8.C2BC
B$5.E2.BCBCB2.A$4.E.E.2BC3BA2B$5.E2.2B.3B3A$8.8B$7.B2C5B$8.2C4B$9.4B$
9.D5B$11.D.CE$13.E$14.3E$16.E!

[EvinZL]

xs20_gbbgra96z11 instead of Eater 2 allows for 1 row reduction (2464 -> 2408):

Code: Select all

x = 56, y = 43, rule = LifeHistory
28.2A$25.2A2.A$23.3A.2A8.AB$22.A4.B4.2A2.B2A15.2A$22.A.2AB2A3B2AB2.2A
B6.3B5.A$23.A.A.2A.4B3.BA2.2ABA.4B.BA.A$30.3B6.5B3A3B.B2A$30.B2AB5.2A
3B4A4B$30.A2BAB3.BA5BA2BA3B$15.A11.A2.BABAB2.2BA3BA2B2A4B$14.A.A9.A.A
.2BA7BA2BA2BA4B$8.2A4.A.A10.A2.BA.A5B5.6B$8.A4.2A.3A11.B2A5B4.4B3.B$
2A3.2A.A5.B4.A3.A5.BAB3A2B5.2A5.B$A4.A.A4.B2AB3A4.3A4.ABAB2A7.A4.A2B$
.3A.A6.B2A.A9.A4.4A5.3A4.A.2A2B$3.A.2A2.4B12.2A4.B4AB3.A6.AB2AB2A$3.
10B12.6B2.B.2A8.2A2.2AB2A$4.2B.7B2.B10.5B3.A7.A2.A.A$5.13B5.B2.7B3.3A
4.2A3.5A.A$4.16B2.3B.8B4.A8.A3.A.2A$4.21B.9B12.2A$4.12BA9BA9B$5.10BAB
2A6B2A5B.4B$7.9BAB2A4B3A5B2.4B$9.3BA4BAB2A2BA5B2AB3.4B$9.3BA5B2A2B2A
5BA3B3.4B$10.B2A5BA2B2ABA4BA3B4.4B$10.5B3A4B2ABA9B3.4B$10.5B2A6B2ABA
10B2.4B$9.6BA9BA12B2.4B$10.6B.21B3.4B$10.10B2.16B4.4B$12.5B.B5.13B6.
4B$13.4B8.B2.7B.2B6.4B$12.B2A2B12.10B6.4B$13.2A14.4B2.2A.A7.4B$25.A.
2AB6.A.3A6.4B$23.3AB2AB4.A.A4.A6.4B$22.A4.B5.A.2A3.2A7.4B$23.3A.2A4.A
16.3BA$25.2A2.A2.2A17.3BA$28.2A22.3AB!

1 less row:

Code: Select all

x = 56, y = 42, rule = B3/S23
14b2obo3bo$14bob2o2b4ob2o10bo$22bo3bobo3b2o3b2o15b2o$15b2ob2obo7bo2b2o
3b2o15bo$13bo2bob2ob5o2bo9bo2b2obo7bobo$13b2o2bo2bo23b3o5b2o$18bo2bo2b
2o5b2o6b2o3b4o$19b2o3bo5bo2bo5bo5bo2bo$15bo9b3o3bobo5bo3bo2b2o$14bobo
11bo3bo7bo2bo2bo$8b2o4bobo5bo2b3o3bobo$8bo4b2ob3o3b4o5b2o$2o3b2obo10bo
10bob3o7b2o$o4bobo5b2ob3o3b4o4bobob2o7bo4bo$b3obo7b2obo5bo3bo4b4o5b3o
4bob2o$3bob2o18b2o5b4o4bo6bob2ob2o$35b2o8b2o2b2ob2o$35bo7bo2bobo$36b3o
4b2o3b5obo$38bo8bo3bob2o$47b2o$16bo9bo$15bob2o6b2o$16bob2o4b3o$12bo4bo
b2o2bo5b2o$12bo5b2o2b2o5bo$11b2o5bo2b2obo4bo$15b3o4b2obo$15b2o6b2obo$
15bo9bo5$13b2o$13b2o20b2obo$25bob2o7bob3o$23b3ob2o5bobo4bo$22bo10bob2o
3b2o$23b3ob2o4bo19bo$25b2o2bo2b2o20bo$28b2o22b3o!

[squareroot12621]

xs20_gbbgra96z11 instead of Eater 2 allows for 1 row reduction (2464 -> 2408):

Code: Select all

<removed>

1 less row:

Code: Select all

<removed>

3 less population:

Code: Select all

x = 56, y = 42, rule = B3/S23
14b2obo3bo$14bob2o2b4ob2o10bo$22bo3bobo3b2o3b2o15b2o$15b2ob2obo7bo2b2o
3b2o15bo$13bo2bob2ob5o2bo9bo2b2obo7bobo$13b2o2bo2bo23b3o5b2o$18bo2bo2b
2o5b2o6b2o3b4o$19b2o3bo5bo2bo5bo5bo2bo$15bo9b3o3bobo5bo3bo2b2o$14bobo
11bo3bo7bo2bo2bo$8b2o4bobo8b3o3bobo$8bo4b2ob3o4b3o5b2o$2o3b2obo10bo2b
o7bob3o7b2o$o4bobo5b2ob3o4b3o4bobob2o7bo4bo$b3obo7b2obo9bo4b4o5b3o4bo
b2o$3bob2o18b2o5b4o4bo6bob2ob2o$35b2o8b2o2b2ob2o$35bo7bo2bobo$36b3o4b
2o3b5obo$38bo8bo3bob2o$47b2o$16bo9bo$15bob2o6b2o$16bob2o4b3o$12bo4bob
2o2bo5b2o$12bo5b2o2b2o5bo$11b2o5bo2b2obo4bo$15b3o4b2obo$15b2o6b2obo$15b
o9bo5$13b2o$13b2o20b2obo$25bob2o7bob3o$23b3ob2o5bobo4bo$22bo10bob2o3b
2o$23b3ob2o4bo19bo$25b2o2bo2b2o20bo$28b2o22b3o!

[Entity Valkyrie 2]

xs20_gbbgra96z11 instead of Eater 2 allows for 1 row reduction (2464 -> 2408):

Code: Select all

<removed>

1 less row:

Code: Select all

<removed>

3 less population:

Code: Select all

x = 56, y = 42, rule = B3/S23
14b2obo3bo$14bob2o2b4ob2o10bo$22bo3bobo3b2o3b2o15b2o$15b2ob2obo7bo2b2o
3b2o15bo$13bo2bob2ob5o2bo9bo2b2obo7bobo$13b2o2bo2bo23b3o5b2o$18bo2bo2b
2o5b2o6b2o3b4o$19b2o3bo5bo2bo5bo5bo2bo$15bo9b3o3bobo5bo3bo2b2o$14bobo
11bo3bo7bo2bo2bo$8b2o4bobo8b3o3bobo$8bo4b2ob3o4b3o5b2o$2o3b2obo10bo2b
o7bob3o7b2o$o4bobo5b2ob3o4b3o4bobob2o7bo4bo$b3obo7b2obo9bo4b4o5b3o4bo
b2o$3bob2o18b2o5b4o4bo6bob2ob2o$35b2o8b2o2b2ob2o$35bo7bo2bobo$36b3o4b
2o3b5obo$38bo8bo3bob2o$47b2o$16bo9bo$15bob2o6b2o$16bob2o4b3o$12bo4bob
2o2bo5b2o$12bo5b2o2b2o5bo$11b2o5bo2b2obo4bo$15b3o4b2obo$15b2o6b2obo$15b
o9bo5$13b2o$13b2o20b2obo$25bob2o7bob3o$23b3ob2o5bobo4bo$22bo10bob2o3b
2o$23b3ob2o4bo19bo$25b2o2bo2b2o20bo$28b2o22b3o!

Well... you could just replace the P6 thumb with a regular one:

Code: Select all

x = 56, y = 42, rule = B3/S23
14b2obo3bo$14bob2o2b4ob2o10bo$22bo3bobo3b2o3b2o15b2o$15b2ob2obo7bo2b2o
3b2o15bo$13bo2bob2ob5o2bo9bo2b2obo7bobo$13b2o2bo2bo23b3o5b2o$18bo2bo2b
2o5b2o6b2o3b4o$19b2o3bo5bo2bo5bo5bo2bo$15bo9b3o3bobo5bo3bo2b2o$2b2o10b
obo11bo3bo7bo2bo2bo$3bo10bobo8b3o3bobo$2bo10b2ob3o4b3o5b2o$2b2o2b2o11b
o2bo7bob3o7b2o$5bobo5b2ob3o4b3o4bobob2o7bo4bo$4obo7b2obo9bo4b4o5b3o4bo
b2o$o2bob2o18b2o5b4o4bo6bob2ob2o$35b2o8b2o2b2ob2o$35bo10bobo$36b3o7bob
6o$38bo8bo5bo$48b3o$16bo9bo23bo$15bob2o6b2o$16bob2o4b3o$12bo4bob2o2bo
5b2o$12bo5b2o2b2o5bo$11b2o5bo2b2obo4bo$15b3o4b2obo$15b2o6b2obo$15bo9bo
5$13b2o$13b2o20b2obo2bo$25bob2o7bob4o$23b3ob2o5bobo$22bo11b2o2b2o$23b
3ob2o10bo13bo$25b2o2bo8bo15bo$28b2o8b2o12b3o!

[Period1GliderGun]

1 less row:

3 less population:

1 less row and 42 less population:

Code: Select all

x = 56, y = 41, rule = B3/S23
37bo$24bo7b2o3b2o15b2o$22bo3b4o2b2o3b2o15bo$22bo3bo11bo2b2obo7bobo$22b
o21b3o5b2o$25bo5b2o6b2o3b4o$23b2o5bo2bo5bo5bo2bo$15bo15bobo5bo3bo2b2o
$14bobo9b3o3bo7bo2bo2bo$8b2o4bobo14bobo$8bo4b2ob3o12b2o$2o3b2obo10bo3b
o6bob3o7b2o$o4bobo5b2ob3o4b3o4bobob2o7bo4bo$b3obo7b2obo9bo4b4o5b3o4bo
b2o$3bob2o18b2o5b4o4bo6bob2ob2o$35b2o8b2o2b2ob2o$35bo10bobo$36b3o7bob
6o$38bo8bo5bo$48b3o$16bo9bo23bo$15bob2o6b2o$16bob2o4b3o$12bo4bob2o2bo
5b2o$12bo5b2o2b2o5bo$11b2o5bo2b2obo4bo$15b3o4b2obo$15b2o6b2obo$15bo9b
o5$13b2o$13b2o20b2obo$25bob2o7bob3o$23b3ob2o5bobo4bo$22bo10bob2o3b2o$
23b3ob2o4bo19bo$25b2o2bo2b2o20bo$28b2o22b3o!

[Entity Valkyrie 2]

guntrue_208 in 1312, down from 1394:

Code: Select all

x = 40, y = 32, rule = B3/S23
b2o8b2o$b2o9bo7bo$12bobo4bobo$13b2o5bo12b3o$3o6b2o22b3obo$2o7b2o23bob
obo$3b2o30bo2bo$2b3o31b2o$bobo15b2o$b2o16bobo$19bob2o$16b6o14b2o$10b2o
3bo4bo15b2o$b2o6bo2bo2bo2bo$o2bo6b2o4b2o$obobo23b2o5b3o$bob3o22b2o5b2o
$3b3o12bo19b2o$17bobo17b3o$18bo17bobo$21bo14b2o$20bobo$12b2o7bo$12b2o
bo$16bo5b2o$13bo7b3o$14bob2o3b3o$16b2o3$22b2o$22b2o!

https://catagolue.hatsya.com/object/gun_18/b3s23 still hasn't been updated yet...?

[Vort]

gun_250 is reduced from 3150 to 2310:

Code: Select all

x = 55, y = 42, rule = LifeHistory
11.2A4.2A$11.A.A2.A.A$13.A2BA5.2A5.2A$11.BA4BAB2.A2.A4.A$11.BA4BAB3.
3A5.A$12.A4BA7.2A2.2A2.A$6.2A6.2A4.4A.A.A3.3A$7.A6.B5.A2.A2B.2A.A3.2A
$7.A.AB2.2B9.3BA3.3A2.A$5.2A.2AB.B2A2B7.4B3A4.2A4.2A$4.A.A3.2BABA6B2.
5BA.B.3A2.2A2.A$4.A.A3.2BA5B2A5B.B2ABA.A3.A2.A.A$2.2A.A.2A.2B3A2BAB2A
4B2.BABA.A.2A.ABA.2A$3.A.A.B.A.4B2A2BA5B3.B2.2A2.A.B.B.A$3.A.2ABAB5.
2A9B7.A3.3A3.A$2A.A.ABAB7.BA2B3.4B4.2A.3A.A.3A.A$A2.2A3B16.BABA4.A3.
5B3.A5.2A.2A$2.A4.AB16.B2AB3.A.2A.3B.3A5.2BA.2A$3.5A18.A3B3.A.A5BA5.B
2A$13.B13.4B5.5A6.2AB5A$2.A.2A6.2AB2.BA9.4B4.5B5.3B.A3.A$2.2A.A5.B2AB
.BA.A9.4B5.B8.2BA2.A$11.B.5BA3.A7.4B4.B9.2B4A$10.6B.B4.3A6.8B8.B.A4.A
$6.B3.5B10.A6.10B4.2A3B2A.A$5.2AB.2A5B8.2A5.12B3.BABAB.2A$5.2A2B2A6B
7.20B3.BA.A$6.B.10B8.16B2A4BA2B3A$10.2B2.5B6.2B2A13B2A.3BA2B2.A$9.B5.
5B4.2BA2BA13B4.B2AB2A$7.B3AB4.5B3.3B2A4B2.7B5.BAB2.A.A$7.5A5.14B4.7B
7.2A2.2A$6.AB3ABA5.12B6.3B8.A.A$4.3A.3B.3A4.10B7.5B5.A.A2.A$3.A3.A3BA
3.A4.9B10.2A5.A.A.2A$3.A.3A.A.4A6.9B9.A7.A.A$4.A3.3A11.7B11.3A6.A$6.A
.A.A.2A.A7.6B13.A6.2A$5.2A.BAB.A.2A9.4B$6.A.A2.A14.3BA$6.A2.2A16.3BA$
5.2A21.3AB!

[Period1GliderGun]

gun_250 is reduced from 3150 to 2310:

Code: Select all

x = 55, y = 42, rule = LifeHistory
11.2A4.2A$11.A.A2.A.A$13.A2BA5.2A5.2A$11.BA4BAB2.A2.A4.A$11.BA4BAB3.
3A5.A$12.A4BA7.2A2.2A2.A$6.2A6.2A4.4A.A.A3.3A$7.A6.B5.A2.A2B.2A.A3.2A
$7.A.AB2.2B9.3BA3.3A2.A$5.2A.2AB.B2A2B7.4B3A4.2A4.2A$4.A.A3.2BABA6B2.
5BA.B.3A2.2A2.A$4.A.A3.2BA5B2A5B.B2ABA.A3.A2.A.A$2.2A.A.2A.2B3A2BAB2A
4B2.BABA.A.2A.ABA.2A$3.A.A.B.A.4B2A2BA5B3.B2.2A2.A.B.B.A$3.A.2ABAB5.
2A9B7.A3.3A3.A$2A.A.ABAB7.BA2B3.4B4.2A.3A.A.3A.A$A2.2A3B16.BABA4.A3.
5B3.A5.2A.2A$2.A4.AB16.B2AB3.A.2A.3B.3A5.2BA.2A$3.5A18.A3B3.A.A5BA5.B
2A$13.B13.4B5.5A6.2AB5A$2.A.2A6.2AB2.BA9.4B4.5B5.3B.A3.A$2.2A.A5.B2AB
.BA.A9.4B5.B8.2BA2.A$11.B.5BA3.A7.4B4.B9.2B4A$10.6B.B4.3A6.8B8.B.A4.A
$6.B3.5B10.A6.10B4.2A3B2A.A$5.2AB.2A5B8.2A5.12B3.BABAB.2A$5.2A2B2A6B
7.20B3.BA.A$6.B.10B8.16B2A4BA2B3A$10.2B2.5B6.2B2A13B2A.3BA2B2.A$9.B5.
5B4.2BA2BA13B4.B2AB2A$7.B3AB4.5B3.3B2A4B2.7B5.BAB2.A.A$7.5A5.14B4.7B
7.2A2.2A$6.AB3ABA5.12B6.3B8.A.A$4.3A.3B.3A4.10B7.5B5.A.A2.A$3.A3.A3BA
3.A4.9B10.2A5.A.A.2A$3.A.3A.A.4A6.9B9.A7.A.A$4.A3.3A11.7B11.3A6.A$6.A
.A.A.2A.A7.6B13.A6.2A$5.2A.BAB.A.2A9.4B$6.A.A2.A14.3BA$6.A2.2A16.3BA$
5.2A21.3AB!

2255:

Code: Select all

x = 55, y = 41, rule = B3/S23
11b2o4b2o$11bobo2bobo$13bo2bo5b2o5b2o$12bo4bo3bo2bo4bo$12b6o4b3o5bo$13b
4o8b2o2b2o2bo$6b2o12b4o3bo3b3o$7bo12bo2bobob2obo3b2o$7bob2o2b2o9b3o4b
3o2bo$5b2obo3bo14b4o4b2o4b2o$4bobo10bo2bo6bo2bob3o2b2o2bo$4bobo6b2o6b
o6bo3bo3bo2bobo$2b2obob2o3bo2b2o4bo5bo4bob2obobob2o$o2bobobobobo3b2ob
o2bo6bo2b2o2bobobobo$2obo2bobo8b2obo12bo9bo$bobo2bo12bo11b2ob3obob3ob
o$o2b2o27bo4b3o4bo5b2ob2o$obo4bo18bobo3bob2ob3ob3o6b2ob2o$bob5o19b2o4b
ob7o6b2o$2bo8b2o4bo9bo19bo2b5o$3b3o5b2o3bobo27bo3bo3bo$5bo11bo34bo$22b
o26b5o$22b3o22bo6bo$4b2o2b2o15bo20bo3bobobo$4b2o2b2o14b2o21bo4b2o$48b
obo$42b2o5b5o$27b2o13b2o5bo3bo$7b3o16bo2bo19b4o$6b5o16b2o20bo2bobo$5b
ob3obo37b2o2b2o$3b3o5b3o33bobo$2bo3bo3bo3bo31bobo2bo$2bob3obob4o25b2o
5bobob2o$3bo3b3o29bo7bobo$5bobobob2obo25b3o6bo$4b2o2bo2bob2o27bo6b2o$
5bobo2bo17bo$5bo2b2o19bo$4b2o21b3o!

[Sokwe]

[p250 gun] 2255:

Code: Select all

x = 55, y = 41, rule = B3/S23
...

54 x 41 = 2214 using a custom p5 sparker to bring the quniti-Snark diagonally one cell closer to the p50 gun:

Code: Select all

x = 54, y = 41, rule = B3/S23
11b2o4b2o$11bobo2bobo$13bo2bo12b2o$12b2o2b2o3bo2bo5bo$11b3o2b3o2b4o5bo
b2o4bo$13bo2bo8b2o2b2o2bo4b3o$6b2o12bob2obobo3bo9bo$7bo12b2obobob2obo
5b3o2bo$7bobo15bo5b3obobobob3o$5b2ob2o5b2o7b2ob4o2bobo3bo4bo$6bo7bo15b
obo2b2obo2b3o$4bobo7bo4bo6bo2bo2bobo5b2o$3bobob2o5b2o4bo6b2o3bob3o$3bo
bo3bo9bo11b2o4bo$2obobob2o7b4o14b3ob2o$bobobobo10bo5bobo4b3o15b2ob2o$o
2b2obo18b2o4bo2bo15bob2o$3o4bo17bo8bo3b2o7b2o$3b5o27b5o6b2ob5o$2bo8b2o
4bo31bo3bo$3b3o5b2o3bobo29bo2bo$5bo11bo3bo27b4o$21b3o24bo4bo$24bo20b2o
3b2obo$4b2o2b2o13b2o21bobo2b2o$4b2o2b2o37bobo$41b2o4bo2b3o$26b2o13b2o
4bo4bo$25bo2bo18b2ob2o$7b3o16b2o19bo3bobo$6b5o37b2o2b2o$5bob3obo31bo2b
obo$3b3o5b3o29b4obo$2bo3bo3bo3bo23b2o7bo$2bob3obob4o24bo6bo$3bo3b3o29b
3o3b2o$5bobobob2obo26bo$4b2o2bo2bob2o$5bobo2bo17bo$5bo2b2o19bo$4b2o21b
3o!