p13-assisted period-52 glider gun

p13-assisted period-52 glider gun
x = 126, y = 97, rule = B3/S23 64bo$62b3o$61bo$61b2o4$47bo3bo6bo$43bo2b2ob3o4b2ob2o$42bobo3bobo5b2o$ 43bo3b3o5b2o24b2o$39bo16b2o15bo7bo9bo$38bobo2bo2b2o25b3o3bobo7b3o$37bo 2b7o29bob3o7bo$38b2o5b2o28bob2o9b2o$40bo34bo2bo$40bobo41bo$41bo41bobo$ 38b3o35bo2bo2bo2bo$38bo27b3o8b2o4b2o$66bo$57b2o8bo$44bo11bobo$42b2o6b 2o4bo$43b2o3bo2bo2b2ob4o27b2o$48b2obobobobo2bo27bobo$51bobobobo19bobo 8bo$51bobob2o20b2o31b2o$52bo25bo31bo$108bobo$65b2o2b2o4b2o29b2obo$56b 2o7bo3b2o3bo2bo25b6o$56b2o5bobo3b2o4bobo25b3o$63b2o3b2o6bo32b2o$68b2o 15b2o22bo$31bo35bobo10b2o4bo17bo5b3o$29b2o37bo2b2o7bo5bob2o22bo$30b2o 15bo17b3o3bobo7b3o3bo4bo7b2o$46bo11b3o4bo7bo9bo4bo4bo7bo$46b3o9bo14b2o 12b3o3bo8b3o$53b2o4bo26b2o4bo10bo$54bo32bo23b2o$9bo41b3o30b3o21b2o2bo$ 9b3o39bo32bo7bo15bob2o$12bo78bobo16bo$11b2o65b2o10bo2bo16bo$78bo12b2o 2b3o13b2o$80bo14bo12b3o2bo$3b2o13bo41b2o14b5o15bo10bo3bo2bo$3bo12b2o 43bo13bo11b2o18bob2ob2o$2obo13b2o15bo22bo3bobo12b3o7bobo19bobo$o2b3o4b 2o21bo21b3o4b2o3b2o10bo6bo22b3o4bo$b2o3bo3b2o21b3o10bob2o4bo11bob2o6b 4o5b2o24b2o2bobo$3b4o39b2o2bobo2b5o6bo3bo5bo3b2o7bo22bobo2bo$3bo15b2o 18b2o8b2ob3o2bo2bo6b3o7b3o2bo6b3o20bo$4b3o12bobo18bo5b3o6b2o2b2o7bo10b ob2o4b2o3bo19bo4bo$7bo13bo18bobo2bo3bobobo25bo6bo3b2obo18bo4b3o$2b5o 14b2o15b2obobo2b2obo3bo24b2o5bo2b2obobo20b3o$2bo34bobobob2obo2bobob2o 31b2obobob2o22bo$4bo32bo3bo4bobo2bob2o32bo3bo4bo11b3o6bo$3b2o12bo16b2o bo3bob4obob3o17b2o15bo3bob4o11bo8b2o$18b2o14bo2bob2obo4bobo20bo14bobob o2bo16bo$17b2o16b2obobo3b2obo23b3o11b2obob3ob2obo$38bo4b2ob2o8b3o14bo 14bobo2b2ob2o$38b2o18bo29b2o28bo$27b2o28bo6bo42bo9bobo$27b2o35b3o38b3o 9bo2bo$28b3o36bo36bo13b2o$22bo5bo37b2o36b2o$22bo6bo2b2o44b3o30bo$30bo 9bobo37bo9b3o18b2o9b2o$29b2o8bo2bo36b2o9bo4bo14bobo9bobo$28b3o9bo2bob 2o44bo3b2o27bo$17bo2bob2o19bo2bo49b2o26b2o$17b4obo21b2o16bo30bo2bo$22b obo19b2o17b2o11bo17b2o$19b2o2b2o39b2o10b2o29b3o2b2o$19bo34bo11bo8bo2bo 31b4o$20bo20b2o11b2o5b5o10bob2o11b2o14bo2bo$19b2o21bo21bo11b3o13bo15b 2o$39b3o35bo11b3o8b2o$39bo49bo11bo$63b2o33b3o$63bo4b2ob2o25bo$60b2obob 2o2b2obo$59bo2bob2obo4bobo$59b2obo3bob4obobo2bo$62bo3bo4bobob2obo$62bo bobob2obo2bobobo9bo$63b2obobo2b2obobobo10b2o$65bobo2bo3b5obo7b2o$65bo 5b3o6bo3b2o$64b2o8b2ob3o2bo2bo$71b2o2bobo2b5o$71bob2o4bo$80b3o$82bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ MAXGRIDSIZE 9 HEIGHT 680 WIDTH 800 POPUPHEIGHT 680 POPUPWIDTH 800 THUMBSIZE 3 ZOOM 6 GPS 40 LOOP 52 ]]
View static image
Pattern type	Gun
Number of cells	898
Bounding box	126 × 97
Period	52
Barrels	1
Discovered by	Chris Cain Matthias Merzenich Entity Valkyrie Dave Greene
Year of discovery	2018
Rules Outer-totalistic rules B3/S23 – B38/S238 # of rules 22 = 4 Isotropic rules B3/S23 – B34c8/S238
Pattern files RLE period52gun5.rle

This article is about a smaller true period-52 glider gun, constructed in November 2018. For other uses, see p52 gun (disambiguation).

p13-assisted period-52 glider gun is a period 52 glider gun discovered by Chris Cain on November 18, 2018, based on observations by Entity Valkyrie and Matthias Merzenich. By using period-52 oscillators (consisting of a welded 53P13 and p4) to liberate gliders from the middle of the Herschel track, it has a vastly reduced bounding box compared with the original period-52 glider gun, and its population is almost eight times smaller. Its mechanism is shown below in an uninterrupted 394 × 394 Herschel loop:

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41bob3obobo41bo5bobo8bo4bo$17bo2b2ob2o2bo23b2obobo3b2obo37b2obob3ob2ob o37b2obobobob2obo37b2obobobob2obo37b2obobo3b2obo37b2obobobob2obo37b2ob obobob2obo7b5o$17b2o7b2o23bobob2obo4bo6b2o29bobobo2bo4bo6b2o29bobobo2b o4bo6b2o29bobob2obo4bo6b2o29bobo2b2obo3bo6b2o29bobobo2bo4bo6b2o29bobob 2obo4bo$53bo3bob4o7bo32bo3bob4o7bo32bo2b3ob3o7bo32bo3b3ob2o7bo32bobobo 3b2o7bo32bo3bob4o7bo32bo3bob4o10bo$53bo3bo4bobo6b3o29bo3bo4bobo6b3o29b o3bo4bobo6b3o29bo2b2o4bobo6b3o29bobobobo2bobo6b3o29bobobobo2bobo6b3o 29bo3bo4bobo7bobo$52b2obobob2o2b2o8bo28b2obobob2o2b2o8bo28b2obobob2o2b 2o8bo28b2obo3b2o2b2o8bo28b2obobob2o2b2o8bo28b2obobob2o2b2o8bo28b2obobo b2o2b2o8bo$51bo2b2obobo41bo2b2obobo41bo2b2obobo41bo2b2obobo41bo2b2obob o41bo2b2obobo41bo2b2obobo$52bo3b2obo42bo3b2obo42bo3b2obo42bo3b2obo42bo 3b2obo42bo3b2obo42bo3b2obo$53b2o3bo44b2o3bo44b2o3bo44b2o3bo44b2o3bo44b 2o3bo44b2o3bo$55b3o47b3o47b3o47b3o47b3o47b3o47b3o$55bo49bo49bo49bo49bo 49bo49bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ MAXGRIDSIZE 9 WIDTH 840 HEIGHT 840 THUMBSIZE 2 ZOOM 2 GPS 26 AUTOSTART OFF LOOP 52 ]]

a 394 × 394 period-52 emu (click above to open LifeViewer) RLE: here Plaintext: here

Further reductions were found by Dave Greene, Adam P. Goucher, Dongook Lee, and Matthias Merzenich shortly after. In November 2021, additional reductions using a new glider loop design were found by cvojan, Tanner Jacobi, and iNoMed, leading to a 93 × 87 glider gun.

x = 93, y = 87, rule = B3/S23 29b2o3b2o$28bo2bobobo11bo$3bo24bob2obo11b3o$2bobo3b2ob2o12b2obo2bob2o 9bo$3b2o2bobobobo11b2ob2o14b2o$5b3obobo2bo$b4o7bobo$bo2bo2b2obobob2o 14b2o17bo2b2o$3bob2obobobo2bo14b2o16bobo2bo$2b2obo2bo4b2o34b2obo$bo6b 2ob2o20bobo15bo$2b2o6bobo20b2o4b2o8b2o$5bobob3o22bo3bobo8bo$4b2obo31bo 4b2o5bo$4b4o2b2o31b2o5b2o$3bo2bo4bo33bo$3bo2bo3bo3b2o$3bo3bo2bobo2bo 20b2o2b2o$7b2obob2o22bo2b4o$2o2b5obobo24b6o$o4bo4bo3bob2o16b3o6b2o$b3o bobobob4obo17bo2bo6bo$2bo5bo2bo4bo18b2o8b2o$2bo3bob2o3b3o4bobo21bo$2b 2o2bo4bobo6b2o$4b2ob5o9bo19bo2bo2bo$b3o8bo26b3o2bob2o9b2o$b3o3bo3b2o 25bo3b2o12b2o$2bob2o30bo2b3ob6o9bo$5bo30b3o10bo$o32bo5b2o2b2ob3o$obo 30b6o2bo2bobo$b2o36bob2o$35b4obo$34bobobobo$6b2o27bobo2b2o$6bobo27bobo bo2bo42b2o$8bo26bobo2bob2o42bo$6b2o29bo2bo42b2obo$6bo27b3o2b2o29b2o8bo 4bo$69b2o8bo4bo$31bo5b4o30bo7bo3b3o$6b2o23b3o7bo6b2o30bo4b2o$7bo26bo3b o2bo6bo36bo$7bo25bo4b2ob2o2b2obo18bo18b3o$8b3o22bo2bo3bo3bo2bo17b3o12b o7bo$5b3o4bo7bo9b2obobo4bob2obo10bob2o4bo14bobo$7bo4bo8bo9bobo2bo4bo3b 2o9b2o2bobo2b5o9bo2bo$12bo6b3o8bo2bo2bobo2bobobo3b2o8b2ob3o2bo2bo9b2o$ 7bo2bobo17bobo3bo2bo5bo4bo5b3o6b2o2b2o$7bobo2b2o15b2ob2obo4bob2ob2o3bo bo2bo3bobobo9b3o$8bo4b3o15bo2b2o4b2o2bo3b2obobo2b2obo3bo11bo8b2o$14bob o14bo2b2o4b2o2bob2obobob2obo2bobob2o9bo9bobo$11b2ob2obo14b2o2b4o2b2obo bo3bo4bobo2bob2o21bo$10bo2bo3bo16bo2b2o2bo3bobo3bob4obob3o23b2o$11bobo 3b2o15bob4obo3bobobo2bo4bobo$12bo22bo4bo5bobob3ob2obo$48bobo2b2ob2o$ 48b2o$33bo$34bo26b3o9b2o$32b3o12bob2o10bo2bo9bo14b2o$39b2o6b4o9b2o2bo 9bobo12b2o$39b2o6bo3bo8bo2b2o10b2o$48b3o9b3o24b4o$27b2o19b3o10b2o16b2o 5bo3bo$26bobo19bo30bob2o4bo$26bo55bo2bobo$25b2o53bobo2b2o$64b2o9bobo2b 2o7b2o$63bo2bo8b2o13bo$31bo2bo29b2o10bo13bobo$31b4o16b2o11bo26b2o$52bo $31b2o16b3o$31b2o16bo$73b2o$73bobob3o$70b2obobobob3o$69bo2bobo7bo$69b 2obo2b2ob4obo$72bo3bo4bobo8bo$72bobobob2obob2o5bobo$73b2obobo2bo9b2o$ 75bobo2b2o$75bo$74b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ MAXGRIDSIZE 9 WIDTH 840 HEIGHT 840 THUMBSIZE 2 ZOOM 8 GPS 26 AUTOSTART OFF LOOP 52 ]]

93 × 87 p52 glider gun (click above to open LifeViewer) RLE: here Plaintext: here

Later designs & legacy

Upon first the discovery of the Hotcrystal0 reaction almost immediately after the final reduction above (that p13-assisted version was so quickly rendered obsolete that by the end of November 2021 the p52 no longer relied on overclocked herschel conduits) and later the introduction of Mitchell Riley's improved CatForce search tool the following year yielding multiple small engine-based p52 guns, later discoveries largely rendered the preceding years of effort on constructing optimized p52 guns almost entirely obsolete.

With all of these advancements that led to diminutive guns, it may be easy to fall to the temptation of saying that the work on these guns was not worth it. However, the legacy of these advancements is more important an important timeline cataloging the evolution of life technology. Novel innovations in spark searching were necessary to find minimized versions of the gun's sparkers, and searching for most efficient welds still plays a role in some other low-period guns.

See also

• 53P13