`x = 25, y = 20, rule = B34c/S2-i34cqz6e8`

17bo$15bo$10bo4bo$8b2obo3b2o6b2o$8bo4bo9b2o$8bo3bo$9b3o3b2o$11bo$15b2o

bo$19b2o$14b2o3b2o$19b2o$5bo$4bob2o$bo6bobo$o3bo3b2obo$o5b4obo9b2o$2ob

o4b3o10b2o$2bobo3bo$3bobobo!

`x = 459, y = 202, rule = B34c/S2-i34cqz6e8`

217b2o$217b2o$218b3o$219b2o$219bo7$184b3o$186bo$185bo22b3o$208bo$209bo

7$151b3o$153bo$152bo44b3o$197bo$198bo7$118b3o$120bo$119bo66b3o$186bo$

187bo7$85b3o$87bo$86bo88b3o$175bo$176bo7$52b3o127b2o$54bo126bo2bo$53bo

110b3o15b2o$164bo103bobobobo$165bo102bo3bobo$244b2o22bobo$240bo3bobo$

183b4o52bo33bo14b2o20b2o20b2o20b2o20b2o20b2o$183b4o44b2o7bo3bobo6b2o

32bo2bo18bo2bo18bo2bo18bo2bo18bo2bo18bo2bo49b2o$182bo3bo21b2o21b2o7bo

4bo7b2o33bobo19bobo19bobo19bobo19bobo19bobo49b2o$176bo4b3obo16bo6b2o

31bo46bo21bo21bo21bo21bo20b2o52bo$19b3o140b2o12b2o4bo3bo14bobo4bobo13b

2o171b3o$21bo139b2o12bobo4b2ob2o14bobo6b2o51bo133bo53bobo$20bo67b2o63b

3o4bo2bob3o15bobo16bo5bo2bo10b2o17bobo18bobo94bo39bo28bo22b2o$56b2ob2o

3bo18b2o3b2o3b2o58bo7b2obobo17bo24b2o11b2o18bo114bo40bo27b2obo$7bo35bo

12b2obob2obo2b2o14b2o3b2o2b2obo58bo7b4o57bo37bobo93bo2bo3bo60bobob2o$

5b3o4bo29bobo10bo3bobo2bob3o22bob2o69bo96bo94bo8bo20b2o3bo37b2o21bo2bo

$4bo3bo2bobo20b2o5bob3o9bo2b2obo5b2o15bob2o4bo9bo12b2o23b3o66bo146b2o

5b2o20bobo2b4o19b2o9bo3b2o5b2o15bo$4bo2bo4b2o9b2o9b2o4b2o4bo9bob3obo3b

2o15b4o3bo15bo8bobo21bo2b2o63b3o4bo142bobo3b2o20bo4bob2o8b2o9b2o10b2ob

2o5b2o15bo4bo$4b2o2b2o13b2o16b2o3bo12b2obo19b4o5bo14bo9b2o22bo3bo61bo

3bo2bobo20b2o56bo19b2o20b2o20bo26b3o5bo8b2o22b2o29b2o$6b3o36bo16bo7bo

10bobo3b3o15bo12b2o22b2o62bo2bo4b2o9b2o9b2o9b2o43b2obo17bo2bo18bo2bo

51b2o61bo4bo$58bo3bo17bo6bobo13b2ob2o3b2o5bobo18b4o11b2o14b3o3b2o28b2o

2b2o13b2o20b2o38b2o3bobo18bo2bo14b5o2bo50bo62bob5o$58bo2bo5bo13b2o4bo

2bo13bob2o3bobo5b2o6b2o11bo8b2o3b2o14b3o3b2o30b3o57bo17bo2bo24b2o17bo

2b2o114bob2obo$58bo2bo4bobo10b3o6bo2bo13bo6b2o12bo2bo18bo2bo18b3o94b4o

18bo42bo$59b2o5b6o7bo5bo3b2o23b2o11b2o20b2o115bo4bo2bo11bob2o$57bo4bo

7b3o7bo3b3o27bobo52bobo94bob2o5bo10b2o3b3o25bo40bo$58bo4bo6b3o11b2o21b

2o6b2o50bob3o94bo2bo3bobo10bo4bobo23b3o4bo35bo$57bo5bo43bo2bo57b2o96bo

6b2o13bo4bo22bo3bo2bobo20b2o11bobo6b2o20b2o$9b3o46bob2o46bobo153b3o3bo

7b3o4bo2b2ob3o22bo2bo4b2o9b2o9b2o20b2o20b2o$11bo25bo20b2o218b3o4bo3bo

26b2o2b2o13b2o23bo$3bo6bo24bobo21bo72b3o129b2o14bo3bo4bo28b3o$b3o32b2o

45b2o23b2o21bo4bo19b2o20b2o20b2o20b2o15bo4b2o39b2o3b3o$o3bo21b2o9bo10b

2o20b2o10bo9b2o13bo2bo3b2o21bo17bo2bo18bo2bo18bo2bo18bo2bo12bobo3bo2bo

32bo6bo$o4bo9b2o9b2o9b2o9b2o20b2o11b2o7b2o14bobo3b2o14bobobobo18bo2bo

18bo2bo18bo2bo18bo2bo13b2o3bo2bo36bobo5b2o$2obo3b2o6b2o20b2o70bo20bobo

2bo20b2o20b2o20b2o20b2o20b2o37bobo$2bo4bo123b2o$7bo251b2o7b2o$9bo249b

3o5b3o$59bo198bo2b3ob3o2bo$58b3o198b3o5b3o79bo$58b3o198b2o7b2o77bobo$

348b2o$27bo31bo$25bobo$26b2o3$26b2o$25bobo$27bo31bo$348b2o$58b3o198b2o

7b2o77bobo$58b3o198b3o5b3o79bo$59bo198bo2b3ob3o2bo$9bo249b3o5b3o$7bo

251b2o7b2o$2bo4bo123b2o$2obo3b2o6b2o20b2o70bo20bobo2bo20b2o20b2o20b2o

20b2o20b2o37bobo$o4bo9b2o9b2o9b2o9b2o20b2o11b2o7b2o14bobo3b2o14bobobob

o18bo2bo18bo2bo18bo2bo18bo2bo13b2o3bo2bo36bobo5b2o$o3bo21b2o9bo10b2o

20b2o10bo9b2o13bo2bo3b2o21bo17bo2bo18bo2bo18bo2bo18bo2bo12bobo3bo2bo

32bo6bo$b3o32b2o45b2o23b2o21bo4bo19b2o20b2o20b2o20b2o15bo4b2o39b2o3b3o

$3bo6bo24bobo21bo72b3o129b2o14bo3bo4bo28b3o$11bo25bo20b2o218b3o4bo3bo

26b2o2b2o13b2o23bo$9b3o46bob2o46bobo153b3o3bo7b3o4bo2b2ob3o22bo2bo4b2o

9b2o9b2o20b2o20b2o$57bo5bo43bo2bo57b2o96bo6b2o13bo4bo22bo3bo2bobo20b2o

11bobo6b2o20b2o$58bo4bo6b3o11b2o21b2o6b2o50bob3o94bo2bo3bobo10bo4bobo

23b3o4bo35bo$57bo4bo7b3o7bo3b3o27bobo52bobo94bob2o5bo10b2o3b3o25bo40bo

$59b2o5b6o7bo5bo3b2o23b2o11b2o20b2o115bo4bo2bo11bob2o$58bo2bo4bobo10b

3o6bo2bo13bo6b2o12bo2bo18bo2bo18b3o94b4o18bo42bo$58bo2bo5bo13b2o4bo2bo

13bob2o3bobo5b2o6b2o11bo8b2o3b2o14b3o3b2o30b3o57bo17bo2bo24b2o17bo2b2o

114bob2obo$58bo3bo17bo6bobo13b2ob2o3b2o5bobo18b4o11b2o14b3o3b2o28b2o2b

2o13b2o20b2o38b2o3bobo18bo2bo14b5o2bo50bo62bob5o$6b3o36bo16bo7bo10bobo

3b3o15bo12b2o22b2o62bo2bo4b2o9b2o9b2o9b2o43b2obo17bo2bo18bo2bo51b2o61b

o4bo$4b2o2b2o13b2o16b2o3bo12b2obo19b4o5bo14bo9b2o22bo3bo61bo3bo2bobo

20b2o56bo19b2o20b2o20bo26b3o5bo8b2o22b2o29b2o$4bo2bo4b2o9b2o9b2o4b2o4b

o9bob3obo3b2o15b4o3bo15bo8bobo21bo2b2o63b3o4bo142bobo3b2o20bo4bob2o8b

2o9b2o10b2ob2o5b2o15bo4bo$4bo3bo2bobo20b2o5bob3o9bo2b2obo5b2o15bob2o4b

o9bo12b2o23b3o66bo146b2o5b2o20bobo2b4o19b2o9bo3b2o5b2o15bo$5b3o4bo29bo

bo10bo3bobo2bob3o22bob2o69bo96bo94bo8bo20b2o3bo37b2o21bo2bo$7bo35bo12b

2obob2obo2b2o14b2o3b2o2b2obo58bo7b4o57bo37bobo93bo2bo3bo60bobob2o$56b

2ob2o3bo18b2o3b2o3b2o58bo7b2obobo17bo24b2o11b2o18bo114bo40bo27b2obo$

20bo67b2o63b3o4bo2bob3o15bobo16bo5bo2bo10b2o17bobo18bobo94bo39bo28bo

22b2o$21bo139b2o12bobo4b2ob2o14bobo6b2o51bo133bo53bobo$19b3o140b2o12b

2o4bo3bo14bobo4bobo13b2o171b3o$176bo4b3obo16bo6b2o31bo46bo21bo21bo21bo

21bo20b2o52bo$182bo3bo21b2o21b2o7bo4bo7b2o33bobo19bobo19bobo19bobo19bo

bo19bobo49b2o$183b4o44b2o7bo3bobo6b2o32bo2bo18bo2bo18bo2bo18bo2bo18bo

2bo18bo2bo49b2o$183b4o52bo33bo14b2o20b2o20b2o20b2o20b2o20b2o$240bo3bob

o$244b2o22bobo$165bo102bo3bobo$164bo103bobobobo$53bo110b3o15b2o$54bo

126bo2bo$52b3o127b2o7$176bo$175bo$86bo88b3o$87bo$85b3o7$187bo$186bo$

119bo66b3o$120bo$118b3o7$198bo$197bo$152bo44b3o$153bo$151b3o7$209bo$

208bo$185bo22b3o$186bo$184b3o7$219bo$219b2o$218b3o$217b2o$217b2o!

EDIT: 4 engines, similar approach:

`x = 274, y = 246, rule = B34c/S2-i34cqz6e8`

253b3o$255bo$254bo16b3o$271bo$272bo7$220b3o$222bo$221bo38b3o$260bo$

261bo7$187b3o$189bo$188bo60b3o$249bo$250bo7$154b3o$156bo$155bo82b3o$

238bo$239bo7$121b3o$123bo$122bo104b3o$227bo$228bo7$88b3o$90bo$89bo126b

3o$216bo$217bo7$55b3o$57bo$56bo148b3o$205bo$206bo7$22b3o$24bo$23bo170b

3o$194bo$195bo$8bo$8b3o$2b2o4bo$bobo9b2o20b2o20b2o20b2o$bo11b2o9b2o9b

2o9b2o9b2o9b2o9b2o9b2o20b2o20b2o$b3o20b2o20b2o20b2o20b2o20b2o20b2o$7bo

122b3o$5bobo121bo2bo$6b2o75bo49bo49b3o$76bo7bo44b2o52bo$74bo2bo4bobo

44b2o3bo49bo$83bo46bo3bo$71b2o19bo17b2o4b2o12bo$53b2o3bo13bo5bo12b3o

16b2o4bobo11bobo$52b4ob2o18bo2bo10bobob2ob2o11bob4obo11b2o$52bo3bo20bo

bo13bobo12b2obobo3b3o10bo$54bobo16b3o15b2o3bo11b4o6bobo$40b2o12bo4bo

17bo15b4o10bo5bo5b2o$38bo12b2obo5b2o15b2o12bo3b2o11bo5b2o18bo$39bo2b3o

8bo3b2o7b2o40bo5bobo15bo39b3o$40bo3bo12b2o4bo2b2o69b2o33bo$43bo11b2ob

4obo47b2o23bo36bo$56bob2obobo47bo3b2ob2o16bo2bo$57bo2bobo49bo4bobo15bo

$58bo2b2o50bo2bo3bo14b2o$58bo55b2obob2o15bo$117bobo20bo$118bo17b2obobo

$137bob2ob3o$137bob2o2b2o$9b3o126bobo6bo13b3o$11bo126bo2bo2bo2bo13bo$

3bo6bo127bobo4bo16bo$b3o135bo$o3bo21b2o20b2o20b2o20b2o20b2o$o4bo9b2o9b

2o9b2o9b2o9b2o9b2o9b2o9b2o9b2o9b2o9b2o20b2o$2obo3b2o6b2o20b2o20b2o20b

2o20b2o20b2o20b2o$2bo4bo$7bo$9bo3$9bo$7bo$2bo4bo$2obo3b2o6b2o20b2o20b

2o20b2o20b2o20b2o20b2o$o4bo9b2o9b2o9b2o9b2o9b2o9b2o9b2o9b2o9b2o9b2o9b

2o20b2o$o3bo21b2o20b2o20b2o20b2o20b2o$b3o135bo$3bo6bo127bobo4bo16bo$

11bo126bo2bo2bo2bo13bo$9b3o126bobo6bo13b3o$137bob2o2b2o$137bob2ob3o$

118bo17b2obobo$117bobo20bo$58bo55b2obob2o15bo$58bo2b2o50bo2bo3bo14b2o$

57bo2bobo49bo4bobo15bo$56bob2obobo47bo3b2ob2o16bo2bo$43bo11b2ob4obo47b

2o23bo36bo$40bo3bo12b2o4bo2b2o69b2o33bo$39bo2b3o8bo3b2o7b2o40bo5bobo

15bo39b3o$38bo12b2obo5b2o15b2o12bo3b2o11bo5b2o18bo$40b2o12bo4bo17bo15b

4o10bo5bo5b2o$54bobo16b3o15b2o3bo11b4o6bobo$52bo3bo20bobo13bobo12b2obo

bo3b3o10bo$52b4ob2o18bo2bo10bobob2ob2o11bob4obo11b2o$53b2o3bo13bo5bo

12b3o16b2o4bobo11bobo$71b2o19bo17b2o4b2o12bo$83bo46bo3bo$74bo2bo4bobo

44b2o3bo49bo$76bo7bo44b2o52bo$6b2o75bo49bo49b3o$5bobo121bo2bo$7bo122b

3o$b3o20b2o20b2o20b2o20b2o20b2o20b2o$bo11b2o9b2o9b2o9b2o9b2o9b2o9b2o9b

2o20b2o20b2o$bobo9b2o20b2o20b2o20b2o$2b2o4bo$8b3o$8bo$195bo$194bo$23bo

170b3o$24bo$22b3o7$206bo$205bo$56bo148b3o$57bo$55b3o7$217bo$216bo$89bo

126b3o$90bo$88b3o7$228bo$227bo$122bo104b3o$123bo$121b3o7$239bo$238bo$

155bo82b3o$156bo$154b3o7$250bo$249bo$188bo60b3o$189bo$187b3o7$261bo$

260bo$221bo38b3o$222bo$220b3o7$272bo$271bo$254bo16b3o$255bo$253b3o!