p15240 synthesis by GUYTU6J
From this post:
x = 192, y = 202, rule = B3/S23
133bo$133bobo$133b2o$108bo$106b2o$107b2o2$obo$b2o$bo10$6bobo$7b2o$7bo
11$95bobo$37bo57b2o$38b2o56bo$37b2o2$110bo$109bo$109b3o4$92bo$90b2o$
91b2o5$43bo$41bobo40bobo$42b2o41b2o$85bo2$87bo$87bobo$87b2o32$54bo$55b
2o$54b2o$58b3o$60bo$59bo$47bo$47b2o$46bobo3$35b2o$36b2o115b2o$35bo117b
2o6$171b2o$12b2o157b2o$13b2o31b2o$12bo34b2o123bo$46bo104b2o3b2o13bobo$
171bobo$152bo3bo15bo$153b3o$153b3o$169b2obob2o$169bo5bo$170bo3bo$171b
3o2$152bo5bo$151b3o5bo$151b3o3b3o2$149b2o3b2o$149b2o3b2o14bo$13b3o153b
o$15bo153b3o$14bo3$154b2o$154bo17b5o$155b3o13bob3obo$157bo14bo3bo$173b
3o$128b2o44bo$128bo$129b3o$131bo$155bo17b2o$154bo18b2o$154b3o2$132b2o$
132bobo$133b3o$134b2o$131b2o$131b3o$144b3o$144bo$132b2o11bo$132b2o2$
141bo$135b2obobobo$135bob2ob2o10b2o$146b2o4bobo$147b2o3bo$146bo4$171b
2o$139bo19b3o2bo5bo3bo$139b2o14bo3bo9bo5bo$127bobo8bobo12bobo4bo8bo3bo
2bo$127bo3bo19b2o16bo$117b2o12bo10b2o7b2o17bo3bo3bo$117b2o8bo4bo7bo2bo
7b2o18b2o3b2obo$131bo7bo7b2o4bobo23bo$127bo3bo7bo6bo2bo5bo23b2o7b2o$
127bobo9bo7b2o39bobo$140bo2bo46bo$142b2o46b2o22$67b2o$68b2o$67bo!
x = 128, y = 143, rule = B3/S23
o$b2o$2o3$16bo$17b2o$16b2o5$12bo$13bo$11b3o3$28bo$29bo$27b3o3$96bo$94b
2o$20bo74b2o$18bobo$19b2o4$90bobo$90b2o$91bo2$93bo$92bo$92b3o2$13bo$
11bobo$12b2o10$92bobo$58bo33b2o$59bo33bo$57b3o14$34bo$35b2o$34b2o6$70b
o$69bo$69b3o3$37bobo$38b2o55bo$38bo54b2o$94b2o11$30b2o$30bo$31b3o$33bo
5$34b2o$34bobo$35b3o$36b2o$33b2o$33b3o$46b3o$46bo$34b2o11bo$34b2o3$37b
2obo48b3o$37bob2o13b2o33bo$48b2o4bobo33bo$49b2o3bo47bo$48bo52b2o$101bo
bo3$73b2o38b2o$41bo19b3o2bo5bo3bo35b2o$41b2o14bo3bo9bo5bo36bo$29bobo8b
obo12bobo4bo8bo3bo2bo$29bo3bo19b2o16bo$19b2o12bo10b2o7b2o17bo3bo3bo$
19b2o8bo4bo7bo2bo7b2o18b2o3b2obo$33bo7bo7b2o4bobo23bo$29bo3bo7bo6bo2bo
5bo23b2o7b2o$29bobo9bo7b2o39bobo$42bo2bo46bo$44b2o46b2o7$126bo$125b2o$
125bobo!
x = 232, y = 69, rule = B3/S23
bo$2bo$3o3$121bo43b2o$119bobo43bo$120b2o44b3o$3bo164bo$3b2o$2bobo3$9b
2o158b2o$9bobo157bobo55bo$10b3o157b3o52b2o$11b2o119bo38b2o53b2o$8b2o
123b2o33b2o$8b3o121b2o34b3o3$9b2o158b2o$9b2o158b2o$154bo$143bobo9b2o$
144b2o4bo3b2o16b2obo$9b3o132bo6bo20bob2o$11bo2b2o29bo103b3o$10bo2b2o3b
3o22bobo$15bo2bo25b2o19bo$9bo9bo43b2o$9b2o53b2o$8bobo4$62bo$60bobo$61b
2o7bo122b2o19b2o$33bo34b2o123bobo18bobo$33b2o3b2o29b2o123b2o20bo$32bob
o3bobo175b2o7b2o$38bo186bobo$227bo$27b3o197b2o$29bo$28bo9$142b2o$141bo
bo$143bo2$158bo$158b2o69b2o$157bobo69bobo$229bo3$161b2o$162b2o65bo$
161bo66b2o$228bobo!