86P107

86P107
x = 51, y = 30, rule = B3/S23 6bo$6b3o$9bo$8b2o32b2o$42b2o2$b2o29b2o$bo30bo16b2o$2b3o25bobo16bo$4bo 25b2o15bobo$47b2o$10b2o$2o7bo2bo$2o6b2ob2o$10bo$40bo$38b2ob2o6b2o$38b o2bo7b2o$39b2o$2b2o$bobo15b2o25bo$bo16bobo25b3o$2o16bo30bo$17b2o29b2o 2$7b2o$7b2o32b2o$41bo$42b3o$44bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 480 WIDTH 640 THUMBSIZE 2 ZOOM 10 GPS 12 ]]
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Pattern type	Oscillator
Number of cells	86
Bounding box	51 × 30
Period	107 (mod: 107)
Heat	51.4
Volatility	0.91 | 0.91
Kinetic symmetry	.e
Discovered by	Mitchell Riley
Year of discovery	2023
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1 Isotropic rules B3/S23 – B3/S234c
Glider synthesis Fewest gliders 31† Catagolue-generated RLE synthesis †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext p107rpentominohassler.cells RLE p107rpentominohassler.rle
Identifiers apgcode xp107_y232acysooz06a8oyloge2y9g0s4zccy3sqa4yu11zwggyu4ab7y366z4701y98e13yl32aczy333ys6a8o

86P107 is a period-107 oscillator found by Mitchell Riley on September 18, 2023. It is the first known engine-based period-107 oscillator (all previously known oscillators of this period were closed tracks made out of conduits). The oscillator features two R-pentomino descendants hassled by four blocks and eight eater 1s.

With minimum population of 86 cells, it is the smallest known oscillator of this period, beating the 136-cell p107 rectifier loop.

Chris857 found a 33-glider synthesis of the oscillator on the day of its discovery. He lowered the cost to 31 gliders on March 3, 2024.

See also

• R-pentomino hasslers

External links

• 86P107 at Adam P. Goucher's Catagolue