72P119

72P119
x = 51, y = 32, rule = B3/S23 24b2o$24b2o$19bo$17b3o$16bo25b2o$16b2o24b2o3$2b2o$2b2o$25bo$24b3o$23bo 3bo$23b2ob2o19b2o$47bobo$2o47bo$bo47b2o$bobo$2b2o19b2ob2o$23bo3bo$24b 3o$25bo$47b2o$47b2o3$7b2o24b2o$7b2o25bo$31b3o$31bo$25b2o$25b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 119 GPS 9 THUMBSIZE 3 ZOOM 12 WIDTH 700 HEIGHT 500 ]]
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Pattern type	Oscillator
Number of cells	72
Bounding box	51 × 32
Period	119 (mod: 119)
Heat	67.4
Volatility	0.95 | 0.95
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/S234c6e
Glider synthesis Fewest gliders (canonical) 24† Catagolue-generated RLE (canonical) synthesis Fewest gliders (cheapest variant) 22† Catagolue-generated RLE (cheapest variant) synthesis †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext 72p119.cells RLE 72p119.rle
Identifiers apgcode (canonical) xp119_y3ggyc33y0c88gzy311yk11y8ooz0g8oyfca3acz23yho808oyfc871zwccyg131zyc6a8oyi66zyk33 apgcode (cheapest variant) xp119_y3ggyb33y1c88gzy311yk11y8ooz0g8oyfca3acz23yho808oyfc871zwccyg131zyc6a8oyi66zyl33

72P119 is the smallest known period-119 oscillator, discovered by Mitchell Riley on April 1, 2023.

A 24-glider synthesis for this oscillator was found by Carson Cheng, and reduced to 22 gliders by Entity Valkyrie 2 on the same day with a slightly different block placement (Catagolue: here).

The two pi-heptominoes that are hassled in this oscillator are arranged in the same way as in the p44 pi-heptomino hassler, and an intermediate pentadecathlon forms in the middle.

The spark that forms from the honey farm hitting a block can rephase a blinker. If a blinker is placed here, it can support another p119 that uses a non-rephasing transparent blinker; by 72P119 rephasing the blinker once per cycle, it can survive.

x = 51, y = 32, rule = B3/S23 24b2o$24b2o$19bo$17b3o$16bo25b2o$16b2o24b2o3$2b2o$2b2o$25bo$24b3o$23bo 3bo$23b2ob2o19b2o$47bobo$2o47bo$bo47b2o$bobo$2b2o19b2ob2o$23bo3bo$24b 3o$25bo$47b2o$47b2o3$7b2o24b2o$7b2o25bo$31b3o$31bo$25b2o$25b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 WIDTH 670 HEIGHT 500 GPS 9 THEME Book AUTOSTART ]]

72P119 with visible reaction envelope (click above to open LifeViewer) RLE: here Plaintext: here

See also

• p44 pi-heptomino hassler
• p29 pentadecathlon hassler
• Snacker

External links

• 72P119 at Adam P. Goucher's Catagolue
• 72P119 at Adam P. Goucher's Catagolue