Period-201 glider gun

Period-201 glider gun
x = 58, y = 37, rule = B3/S23 41b2o$5b2o35bo$4bobo35bobo$4bo38b2o$b2ob2o10bo6b2o$b2obo11b3o4b2o28b2o $4bob2o11bo33b2o$b4o5bo7b2o16b3o$o5bo3b3o21bob3o$b4o8bo19bo$4b2o6b2o18b 2o$4b2o27b2o$b3o30bo2$o$obo$b2o7$55b2o$55bobo$57bo2$23bo24b2o4b3o$23b 2o24bo2b2o$24b2o18b2o2bo3b2o$24bo19bo3b2o3b4o$19b3obo21b3o3bo5bo$19b3o 16b2o8b3o2b2ob2o$3b2o33bo6b4o2bobo$3b2o28b2o4b3o3bo3b2o2bo$33b2o6bo4b 3o4b2o$48bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ MAXGRIDSIZE 9 THUMBSIZE 2 ZOOM 10 HEIGHT 540 WIDTH 700 GPS 30 ]]
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Pattern type	Gun
Number of cells	84
Bounding box	60 × 32
Period	201
Barrels	2
Discovered by	iNoMed
Year of discovery	2023
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1 Isotropic rules B3/S23 – B3/S234c
Pattern files Plaintext period201glidergun.cells RLE period201glidergun.rle

A period-201 glider gun is any glider gun with true period 201.

The smallest known p201 gun was discovered by iNoMed on October 22, 2023, and reduced by WhiteHawk and Elijah Ken on December 11, 2025 The smallest known period-201 oscillator is a capped version of this gun with standard eaters, with 98 cells (84 + 14 for two fishhooks).

x = 60, y = 40, rule = B3/S23 43bo$43b3o$46bo$45b2o$17bo6b2o$17b3o4b2o28b2o$20bo33b2o$11bo7b2o16b3o$ 11b3o21bob3o$14bo19bo$13b2o18b2o$34b2o$35bo$2o$bo$bobo$2b2o7$56b2o$56b obo$58bo$58b2o$24bo$24b2o$25b2o18b2o$25bo19bo$20b3obo21b3o$20b3o16b2o 7bo$4b2o33bo$4b2o28b2o4b3o$34b2o6bo$13b2o$13bo$14b3o$16bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 10 HEIGHT 450 WIDTH 700 GPS 30 AUTOSTART ]]

98P201 (click above to open LifeViewer) RLE: here Plaintext: here

External links

• 98P201 at Adam P. Goucher's Catagolue