Okay, finally, here is a 44-glider synthesis for the "heart" of the Snark (the original version).
Code: Select all
x = 156, y = 164, rule = B3/S23
4bo$5bo$3b3o$53bo$b2o48b2o$obo24b3o17b3o2b2o13b2o18b2o18b2o18b2o18b2o$
2bo63bo2bo16bo2bo16bo2bo16bo2bo4bobo9bo2bo$54b3o9bobo17bobo17bobo17bob
o5b2o10bobo$46b2o6bo10b2ob2o15b2ob2o15b2ob2o15b2ob2o5bo2b3o4b2ob2o$45b
obo7bo82bo8bo2bo$47bo66b2o18b2o3bo7bobo$94bobo5b2o9bo2bo5b2o9bo2bo11bo
$81bobo10b2o5bo2bo8bo2bo4bo2bo3bo4bo2bo$82b2o11bo5bo2bo9b2o5bo2bo2b2o
5b2o$82bo19b2o18b2o3bobo$95b2o38bo$81b2o12bobo36b2o$80bobo12bo29b3o6bo
bo$82bo44bo$126bo5$153b2o$152bo2bo$153b2o11$119bobo$119b2o$120bo6$27b
2o18b2o18b2o5bo12b2o18b2o28b2o$26bo2bo16bo2bo16bo2bo4bobo9bo2bo3b2o11b
o2bo3b2o21bo2bo$26bobo17bobo17bobo5b2o10bobo4b2o11bobo4b2o21bobo2bo$
25b2ob2o15b2ob2o15b2ob2o7b2o6b2ob2o15b2ob2o11bo13b2ob4o$27bo2bo16bo2bo
16bo2bo6bobo7bo2bo16bo2bo9b2o15bo$27bobo17bobo17bobo7bo9bobo17bobo10bo
bo14bobo$28bo19bo19bo19bo19bo29b2o3$116b3o$116bo$117bo8$33b2o$32bo2bo$
33b2o$36b3o$36bo$37bo4$23bo$23bobo86bobo$23b2o87b2o$13bo99bo$14b2o12bo
4bobo3bobo$13b2o12bo5b2o4b2o$27b3o4bo5bo32bobo$47b2o18b2o4b2o32bo$15bo
30bo2bo16bo2bo4bo33bo$16b2o29b2o18b2o37b3o$15b2o$104b2o27bo$27b2o14b2o
b2o15b2ob2o15b2ob2o15bobo7b2ob2o14bobob2o$26bo2bo6b2o6bobobo15bobobo
15bobobo16bo8bobobo13bobobobo$26bobo2bo4bobo5bobobo2bo12bobobo2bo12bob
obo2bo22bobobo2bo9b2obobobo2bo$25b2ob4o4bo8b2ob4o13b2ob4o13b2ob4o23b2o
b4o13b2ob4o$27bo19bo19bo19bo29bo19bo$27bobo17bobo17bobo17bobo27bobo17b
obo$28b2o18b2o18b2o18b2o17bo10b2o18b2o$107b2o$106bobo21b2o$111b2o17b2o
$110b2o$100b2o10bo$101b2o$100bo9$63bo5bo$64bo3bo$62b3o3b3o3$66b2o$65bo
bo$23bo19bo23bo5bo19bo$22bobob2o14bobob2o24bobob2o14bobob2o$22bobobobo
13bobobobo23bobobobo13bobobobo$21b2obobobo2bo9b2obobobo2bo19b2obobobo
2bo8bobobobobo2bo$25b2ob4o13b2ob4o23b2ob4o8b2o3b2ob4o$27bo19bo29bo19bo
$27bobo17bobo27bobo17bobo$28b2o18b2o28b2o18b2o2$20b2o$20b2o2$18b2o$17b
obo$19bo7$23bo$11bo10bo$12b2o8b3o$11b2o5$12bo$13bo9bo19bo$11b3o8bobob
2o14bobob2o$22bobobobo13bobobobo$20bobobobobo2bo7b2obobobobo2bo$20b2o
3b2ob4o7bo2bo2b2ob4o$9b2o16bo13b2o4bo$8bobo16bobo17bobo$10bo17b2o18b2o
7$12b2o$13b2o$12bo$28b2o$28bobo$28bo!
There are three custom reactions I've found that made it possible.
Firstly, loop -> "oblique hat" reaction. Since the "oblique hat" is not stable, it should have been synchronized with a known 4-glider synthesis of the tail. A tough task here was to find reactions that wouldn't conflict with each other.
Code: Select all
x = 29, y = 19, rule = B3/S23
10bo$10bobo$10b2o$o$b2o12bo4bobo3bobo$2o12bo5b2o4b2o$14b3o4bo5bo2$2bo$
3b2o$2b2o2$14b2o$13bo2bo6b2o$13bobo2bo4bobo$12b2ob4o4bo2$17b2o$17b2o!
Secondly, eater -> integral reaction. It is different from a known reaction (above) in that it requires only 3 instead of 4 gliders and it is also much less fastidious to its surroundings. This is perhaps the most reusable finding of all three.
Code: Select all
x = 28, y = 35, rule = B3/S23
3b2o18b2o$3bobo17bobo$5bo19bo$5b2o18bobo$o9bo15b2o$b2o5b2o$2o7b2o2$2bo
$2b2o$bobo5b3o$11bo$10bo11$8bo5bo$9bo3bo$7b3o3b3o3$10b2o$10bobo$3b2o5b
o12b2o$3bobo17bobo$5bo19bo$5b2o18bobo$26b2o!
And finally the last reaction, that transforms the hook into a "carrierish" ending.
Code: Select all
x = 23, y = 29, rule = B3/S23
15bo$3bo10bo$4b2o8b3o$3b2o5$4bo$5bo9bo$3b3o8bobo$14bobo$12bobobobo$12b
2o3b2o$b2o$obo$2bo7$4b2o$5b2o$4bo$20b2o$20bobo$20bo!