Beluchenko's other p37

Beluchenko's other p37
x = 47, y = 47, rule = b3/s23 18bo28b$18b3o26b$21bo25b$20b2o25b2$32b2o13b$32b2o13b$26bobo18b$28bo18b 2$22b3o22b$15b2o5bo2bo21b$15b2o5bo3bo20b$5b2o19bo20b$5b2o15bo3bo20b$ 22bo2bo8b2o11b$22b3o9b2o11b2$7b2o36b2o$45bob$7bo4b3o28bobob$11bo3bo27b 2o2b$10bo5bo13b3ob3o10b$10bo5bo13bo5bo10b$10b3ob3o13bo5bo10b$2b2o27bo 3bo11b$bobo28b3o4bo7b$bo45b$2o36b2o7b2$11b2o9b3o22b$11b2o8bo2bo22b$20b o3bo15b2o5b$20bo19b2o5b$20bo3bo5b2o15b$21bo2bo5b2o15b$22b3o22b2$18bo 28b$18bobo26b$13b2o32b$13b2o32b2$25b2o20b$25bo21b$26b3o18b$28bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 HEIGHT 600 WIDTH 600 ZOOM 12 GPS 9 LOOP 37 ]]
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Pattern type	Oscillator
Number of cells	132
Bounding box	47 × 47
Period	37 (mod: 37)
Heat	142.5
Volatility	0.97 | 0.97
Kinetic symmetry	rk
Discovered by	Nicolay Beluchenko
Year of discovery	2010
Rules Outer-totalistic rules B3/S23 – B3/S238 # of rules 21 = 2 Isotropic rules B3/S23 – B3/S236e8
Glider synthesis Fewest gliders 28† Catagolue-generated RLE synthesis Uploaded synthesis RLE 132p37_synth.rle †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext 132p37.cells RLE 132p37.rle
Identifiers apgcode xp37_ylca23zy933xc04zygs211ny166y4ooz8oy533y41223y988z0123y2s44044sy9sih1hisw1zy3a8w12221yn31e8zy1ccy4ggy1n112sy333zyb11y13221g0ozyg8oy633zye311

Beluchenko's other p37 (or 132P37) is a period-37 oscillator discovered by Nicolay Beluchenko on March 21, 2010. It is the second unique period-37 oscillator to be found, after Beluchenko's p37, and relies on a completely unrelated mechanism where four pi-heptominoes and four blocks are hassled in a rotationally symmetric manner.

The interaction between a pi and an eater 1 is essentially the same as in a PF35W converter, but the resulting wing is quickly cleaned up with another block to prevent it from crashing into the pi. Working at a small prime period, there is no known way for this oscillator to convert that wing to other usable outputs such as a glider or a Herschel.

When the wing is eaten, spark is emitted. Matthias Merzenich noticed that it can reflect gliders in a variety of ways, including a 90° reaction allowing for a p37 glider loop to be built. On June 4, 2021, David Raucci constructed a p74 honey farm hassler utilizing one of the dot sparks (which was since reduced).

x = 104, y = 73, rule = B3/S23 85bo$83b3o$82bo$76b2o4b2o$75bo2bo$70b2o2b2obo$70b2o3b2o5$81bo6bo$80bob o4b2o$79bo17b2o$80bobo14b2o$68b2o11bo$69bo$75bo8bo13bo$57b2o17bo6bo2bo 10b3o$44b2o12bo15bobo7b2o11bo2bo$45bo12bobo14bo22bobo$44bo14b2o8bobo 27bo$44b2o2b2o18bo3bo17bo$47bobo19bobo17bobo$42b4obo22bo17bo3bo$42bo2b ob2o12bo27bobo8b2o$28bo21b3o7bobo22bo14bobo$26b3o20bo3bo6bo2bo11b2o7bo bo15bo$25bo22bo5bo6b3o10bo2bo6bo17b2o$19b2o4b2o21bo5bo7bo13bo8bo$18bo 2bo26bo5bo36bo$13b2o2b2obo28bo3bo25bo11b2o$13b2o3b2o30b3o9b2o14bobo$ 62b2o17bo$72b2o4bobo$72bo6bo2$24bo6bo$23bobo4b2o$22bo17b2o$23bobo14b2o 9b3o30b2o3b2o$11b2o11bo25bo3bo28bob2o2b2o$12bo36bo5bo26bo2bo$18bo8bo 13bo7bo5bo21b2o4b2o$2o17bo6bo2bo10b3o6bo5bo22bo$bo15bobo7b2o11bo2bo6bo 3bo20b3o$bobo14bo22bobo7b3o21bo$2b2o8bobo27bo12b2obo2bo$11bo3bo17bo22b ob4o$12bobo17bobo19bobo$13bo17bo3bo18b2o2b2o$4bo27bobo8b2o14bo$3bobo 22bo14bobo12bo$3bo2bo11b2o7bobo15bo12b2o$4b3o10bo2bo6bo17b2o$5bo13bo8b o$34bo$22bo11b2o$5b2o14bobo$5b2o17bo$15b2o4bobo$15bo6bo5$27b2o3b2o$26b ob2o2b2o$25bo2bo$20b2o4b2o$21bo$18b3o$18bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 37 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 4 HEIGHT 600 WIDTH 600 ]]

p74 supported by two Beluchenko's other p37s (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

x = 271, y = 47, rule = B3/S23 18bo67bo67bo67bo$18b3o65b3o65b3o65b3o$21bo67bo67bo67bo$20b2o66b2o66b2o 66b2o2$32b2o66b2o66b2o66b2o$32b2o66b2o66b2o66b2o$26bobo65bobo65bobo65b obo$28bo67bo67bo67bo$268bo$22b3o65b3o65b3o65b3o39bobo$15b2o5bo2bo57b2o 5bo2bo57b2o5bo2bo57b2o5bo2bo38b2o$15b2o5bo3bo56b2o5bo3bo56b2o5bo3bo56b 2o5bo3bo$5b2o19bo46b2o19bo46b2o19bo46b2o19bo$5b2o15bo3bo46b2o15bo3bo 46b2o15bo3bo46b2o15bo3bo$22bo2bo8b2o54bo2bo8b2o54bo2bo8b2o54bo2bo8b2o$ 22b3o9b2o54b3o9b2o18bo35b3o9b2o54b3o9b2o$122bobo$7b2o36b2o28b2o36b2o7b 2o19b2o36b2o28b2o36b2o9bo$45bo67bo67bo67bo8b2o$7bo4b3o28bobo29bo4b3o 28bobo29bo4b3o28bobo8bo20bo4b3o28bobo9b2o$11bo3bo27b2o34bo3bo27b2o34bo 3bo27b2o9bobo22bo3bo27b2o$10bo5bo13b3ob3o41bo5bo13b3ob3o41bo5bo13b3ob 3o17b2o22bo5bo13b3ob3o$10bo5bo13bo5bo41bo5bo13bo5bo41bo5bo13bo5bo41bo 5bo13bo5bo$10b3ob3o13bo5bo41b3ob3o13bo5bo41b3ob3o13bo5bo41b3ob3o13bo5b o$2b2o27bo3bo34b2o27bo3bo34b2o27bo3bo34b2o27bo3bo$bobo28b3o4bo29bobo 28b3o4bo29bobo28b3o4bo29bobo28b3o4bo$bo67bo67bo67bo$2o36b2o28b2o36b2o 28b2o36b2o28b2o36b2o2$11b2o9b3o54b2o9b3o54b2o9b3o54b2o9b3o$11b2o8bo2bo 54b2o8bo2bo54b2o8bo2bo54b2o8bo2bo$20bo3bo15b2o46bo3bo15b2o46bo3bo15b2o 46bo3bo15b2o$20bo19b2o46bo19b2o46bo19b2o46bo19b2o$20bo3bo5b2o56bo3bo5b 2o56bo3bo5b2o56bo3bo5b2o$21bo2bo5b2o23b2o32bo2bo5b2o57bo2bo5b2o57bo2bo 5b2o$22b3o29b2o34b3o65b3o65b3o$56bo$18bo67bo67bo67bo$18bobo65bobo65bob o65bobo$13b2o66b2o66b2o66b2o$13b2o66b2o66b2o66b2o2$25b2o66b2o66b2o66b 2o$25bo67bo67bo67bo$26b3o65b3o65b3o65b3o$28bo67bo67bo67bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ ZOOM 4 WIDTH 1200 HEIGHT 400 ]]

Glider-reflecting mechanisms (click above to open LifeViewer) RLE: here Plaintext: here

Mark Niemiec posted a 40-glider synthesis for this oscillator in September 2013. On September 24, 2025, KtT lowered the cost to 36 gliders. On February 11, 2026, PK22 lowered the cost to 32 gliders; the next day Chris857 lowered the cost to 28 gliders.

See also

• 56P27

External links

• Beluchenko's other p37 at Adam P. Goucher's Catagolue