Tutorials/Software - Revision history

Dvgrn at 09:42, 24 March 2026

2026-03-24T09:42:50Z

← Older revision		Revision as of 09:42, 24 March 2026
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	* CatForce variant ([https://github.com/mvr/CatForce GitHub link]) that includes symmetry options by [[Mitchell Riley]].		* CatForce variant ([https://github.com/mvr/CatForce GitHub link]) that includes symmetry options by [[Mitchell Riley]].
	* CatForce-based oscillator searcher ([https://github.com/luke-kiernan/CatForce/tree/osc_search_revisited GitHub link]) by [[Luke Kiernan]].		* CatForce-based oscillator searcher ([https://github.com/luke-kiernan/CatForce/tree/osc_search_revisited GitHub link]) by [[Luke Kiernan]].
	* LocalForce ([https://github.com/nicobrownmath/LocalForce GitHub link]): a CatForce-based oscillator searcher by [[~~Nico~~ Brown]]. It includes a version for searching with periodic catalysts ([https://github.com/nicobrownmath/LocalForce/tree/periodic GitHub link]).		* LocalForce ([https://github.com/nicobrownmath/LocalForce GitHub link]): a CatForce-based oscillator searcher by [[Nora Brown]]. It includes a version for searching with periodic catalysts ([https://github.com/nicobrownmath/LocalForce/tree/periodic GitHub link]).

	=== Soup searchers ===		=== Soup searchers ===

C28: /* Catalysis */

2023-08-15T13:33:21Z

Catalysis

← Older revision		Revision as of 13:33, 15 August 2023
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	=== Catalysis ===		=== Catalysis ===
	These programs attempt to perturb a reaction by placing [[catalyst]]s at the edge of the reaction [[envelope]]. The main use of the first five programs is finding new [[Herschel]] [[conduit]]s and other [[stable technology]]. The remaining programs are CatForce variants that have been used since 2020 to search for oscillator stabilizations, partly in an attempt to fill in ~~the remaining~~ missing oscillator periods (see [[Omniperiodic]]).		These programs attempt to perturb a reaction by placing [[catalyst]]s at the edge of the reaction [[envelope]]. The main use of the first five programs is finding new [[Herschel]] [[conduit]]s and other [[stable technology]]. The remaining programs are CatForce variants that have been used since 2020 to search for oscillator stabilizations, partly in an attempt to fill in then missing oscillator periods (see [[Omniperiodic]]).

	* '''catalyst''': the original catalysis search program by [[Gabriel Nivasch]]. This found the [[boojum reflector]].		* '''catalyst''': the original catalysis search program by [[Gabriel Nivasch]]. This found the [[boojum reflector]].

Confocal: ce

2023-06-07T15:15:21Z

Dvgrn: /* Catalysis */ make the summary more accurate, and correct a minor mis-statement about what software found the boojum reflector

2023-02-09T13:20:56Z

Catalysis: make the summary more accurate, and correct a minor mis-statement about what software found the boojum reflector

← Older revision		Revision as of 13:20, 9 February 2023
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	=== Catalysis ===		=== Catalysis ===
	These programs attempt to perturb a reaction by placing [[catalyst]]s at the edge of the reaction envelope. ~~Their~~ main use is finding new [[Herschel]] [[conduit]]s and other stable technology.		These programs attempt to perturb a reaction by placing [[catalyst]]s at the edge of the reaction envelope. The main use of the first five programs is finding new [[Herschel]] [[conduit]]s and other stable technology. The remaining programs are CatForce variants that have been used since 2020 to search for oscillator stabilizations, partly in an attempt to fill in the remaining missing oscillator periods (see [[Omniperiodic]]).

	* '''catalyst''': the original catalysis search program by [[Gabriel Nivasch]].		* '''catalyst''': the original catalysis search program by [[Gabriel Nivasch]]. This found the [[boojum reflector]].
	* '''catgl''': [[Dave Greene]]'s modification of catalyst with the ability to detect and remove escaping [[glider]]s~~. This found the [[boojum reflector]]~~.		* '''catgl''': [[Dave Greene]]'s modification of catalyst with the ability to detect and remove escaping [[glider]]s.
	* [[ptbsearch]]: a catalysis search program by [[Paul Callahan]].		* [[ptbsearch]]: a catalysis search program by [[Paul Callahan]].
			* [https://conwaylife.com/forums/viewtopic.php?f=9&t=2246 CollisionsSearch]: a catalysis search program by 'Guam', written in Delphi.
	* [https://github.com/simsim314/CatForce CatForce]: a catalysis search program by [[Michael Simkin]].		* [https://github.com/simsim314/CatForce CatForce]: a catalysis search program by [[Michael Simkin]].
	* [https://github.com/mvr/CatForce CatForce variant] that includes symmetry options by [[Mitchell Riley]].		* [https://github.com/mvr/CatForce CatForce variant] that includes symmetry options by [[Mitchell Riley]].
	* [https://github.com/luke-kiernan/CatForce/tree/osc_search_revisited CatForce-based oscillator searcher] by [[Luke Kiernan]].		* [https://github.com/luke-kiernan/CatForce/tree/osc_search_revisited CatForce-based oscillator searcher] by [[Luke Kiernan]].
	* [https://github.com/nicobrownmath/LocalForce LocalForce]: a CatForce-based oscillator searcher by [[Nico Brown]]. It includes [https://github.com/nicobrownmath/LocalForce/tree/periodic a version] for searching with periodic catalysts.		* [https://github.com/nicobrownmath/LocalForce LocalForce]: a CatForce-based oscillator searcher by [[Nico Brown]]. It includes [https://github.com/nicobrownmath/LocalForce/tree/periodic a version] for searching with periodic catalysts.
	* [https://conwaylife.com/forums/viewtopic.php?f=9&t=2246 CollisionsSearch]: a catalysis search program by 'Guam', written in Delphi.

	=== Soup searchers ===		=== Soup searchers ===

Confocal: refs (p154260 p154263), formatting (rm markup from section headings)

2022-11-30T17:53:49Z

refs (p154260 p154263), formatting (rm markup from section headings)

← Older revision		Revision as of 17:53, 30 November 2022
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	== Types of Software ==		== Types of Software ==
	There are many types of Life search programs. Some search for exotic spaceships and others search for fancy oscillators. Some can do both and some more.		There are many types of Life search programs. Some search for exotic spaceships and others search for fancy oscillators. Some can do both and some more.<ref name="post154260" /><ref name="post154263" />

	=== Row-by-row ===		=== Row-by-row ===
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	* [https://conwaylife.com/forums/viewtopic.php?p=86954 dr]: a search program by [[Dean Hickerson]] for finding stabilisations of perturbations moving across a stable background. It can find [[billiard table]] oscillators, signals, and eaters. Written in C.		* [https://conwaylife.com/forums/viewtopic.php?p=86954 dr]: a search program by [[Dean Hickerson]] for finding stabilisations of perturbations moving across a stable background. It can find [[billiard table]] oscillators, signals, and eaters. Written in C.

	=== [[Catalysis]] ===		=== Catalysis ===
	These programs attempt to perturb a reaction by placing [[catalyst]]s at the edge of the reaction envelope. Their main use is finding new [[Herschel]] [[conduit]]s and other stable technology.		These programs attempt to perturb a reaction by placing [[catalyst]]s at the edge of the reaction envelope. Their main use is finding new [[Herschel]] [[conduit]]s and other stable technology.

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	* [[ikpx]]: a heuristic-driven spaceship search program by [[Adam P. Goucher]]. It extends partials in a row-by-row fashion, but performs deep lookaheads by locally executing a cell-by-cell search similar to Logic Life Search (and parallelises). It was used to discover the first [[elementary]] [[knightship]], [[Sir Robin]].		* [[ikpx]]: a heuristic-driven spaceship search program by [[Adam P. Goucher]]. It extends partials in a row-by-row fashion, but performs deep lookaheads by locally executing a cell-by-cell search similar to Logic Life Search (and parallelises). It was used to discover the first [[elementary]] [[knightship]], [[Sir Robin]].
	* [[Bellman]]: a search program for [[conduit]]s and [[stable reflector]]s. It constructs catalysts at the edge of the reaction envelope, and shares properties with both catalyst and dr.		* [[Bellman]]: a search program for [[conduit]]s and [[stable reflector]]s. It constructs catalysts at the edge of the reaction envelope, and shares properties with both catalyst and dr.

			== Further reading ==
			<references>
			<ref name="post154260">{{LinkForumThread\|format=ref\|p=154260\|title=Re: Thread for basic questions\|author=Mark Niemiec\|date=November 30, 2022}}</ref>
			<ref name="post154263">{{LinkForumThread\|format=ref\|p=154263\|title=Re: Thread for basic questions\|author=Matthias Merzenich\|date=November 30, 2022}}</ref>
			</references>

	{{Tutorial}}		{{Tutorial}}
	[[Category:Software\| ]]		[[Category:Software\| ]]

Sokwe: /* Catalysis */ Added Mitchell Riley's CatForce modification

2022-11-25T21:36:37Z

Catalysis: Added Mitchell Riley's CatForce modification

← Older revision		Revision as of 21:36, 25 November 2022
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	* [[ptbsearch]]: a catalysis search program by [[Paul Callahan]].		* [[ptbsearch]]: a catalysis search program by [[Paul Callahan]].
	* [https://github.com/simsim314/CatForce CatForce]: a catalysis search program by [[Michael Simkin]].		* [https://github.com/simsim314/CatForce CatForce]: a catalysis search program by [[Michael Simkin]].
			* [https://github.com/mvr/CatForce CatForce variant] that includes symmetry options by [[Mitchell Riley]].
	* [https://github.com/luke-kiernan/CatForce/tree/osc_search_revisited CatForce-based oscillator searcher] by [[Luke Kiernan]].		* [https://github.com/luke-kiernan/CatForce/tree/osc_search_revisited CatForce-based oscillator searcher] by [[Luke Kiernan]].
	* [https://github.com/nicobrownmath/LocalForce LocalForce]: a CatForce-based oscillator searcher by [[Nico Brown]]. It includes [https://github.com/nicobrownmath/LocalForce/tree/periodic a version] for searching with periodic catalysts.		* [https://github.com/nicobrownmath/LocalForce LocalForce]: a CatForce-based oscillator searcher by [[Nico Brown]]. It includes [https://github.com/nicobrownmath/LocalForce/tree/periodic a version] for searching with periodic catalysts.

Sokwe: /* Catalysis */ Added CatForce-based oscillator searchers

2022-11-25T20:15:01Z

Catalysis: Added CatForce-based oscillator searchers

← Older revision		Revision as of 20:15, 25 November 2022
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	* [[ptbsearch]]: a catalysis search program by [[Paul Callahan]].		* [[ptbsearch]]: a catalysis search program by [[Paul Callahan]].
	* [https://github.com/simsim314/CatForce CatForce]: a catalysis search program by [[Michael Simkin]].		* [https://github.com/simsim314/CatForce CatForce]: a catalysis search program by [[Michael Simkin]].
			* [https://github.com/luke-kiernan/CatForce/tree/osc_search_revisited CatForce-based oscillator searcher] by [[Luke Kiernan]].
			* [https://github.com/nicobrownmath/LocalForce LocalForce]: a CatForce-based oscillator searcher by [[Nico Brown]]. It includes [https://github.com/nicobrownmath/LocalForce/tree/periodic a version] for searching with periodic catalysts.
	* [https://conwaylife.com/forums/viewtopic.php?f=9&t=2246 CollisionsSearch]: a catalysis search program by 'Guam', written in Delphi.		* [https://conwaylife.com/forums/viewtopic.php?f=9&t=2246 CollisionsSearch]: a catalysis search program by 'Guam', written in Delphi.

Confocal: add to category "Software"

2022-11-10T01:16:43Z

add to category "Software"

← Older revision		Revision as of 01:16, 10 November 2022
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	{{Tutorial}}		{{Tutorial}}
			[[Category:Software\| ]]

Confocal: /* Soup searchers */ + link to readme page; archive copy https://web.archive.org/web/20220215093431/https://www.gabrielnivasch.org/fun/life/random-agar

2022-10-04T01:28:37Z

Soup searchers: + link to readme page; archive copy https://web.archive.org/web/20220215093431/https://www.gabrielnivasch.org/fun/life/random-agar

← Older revision		Revision as of 01:28, 4 October 2022
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	* [https://www.ics.uci.edu/~eppstein/ca/gsearch.c gsearch]: brute-force search of small rectangular soups, with the ability to detect if the pattern evolves into an [[oscillator]], [[spaceship]], [[replicator]], or [[puffer]].		* [https://www.ics.uci.edu/~eppstein/ca/gsearch.c gsearch]: brute-force search of small rectangular soups, with the ability to detect if the pattern evolves into an [[oscillator]], [[spaceship]], [[replicator]], or [[puffer]].
	* [[apgsearch]]: family of distributed search programs which run pseudorandom soups and report to a centralised server, [[Catagolue]]. It found the [[pufferfish]] and [[Rich's p16]], in addition to rediscovering many known patterns and providing useful [[predecessor]]s thereof.		* [[apgsearch]]: family of distributed search programs which run pseudorandom soups and report to a centralised server, [[Catagolue]]. It found the [[pufferfish]] and [[Rich's p16]], in addition to rediscovering many known patterns and providing useful [[predecessor]]s thereof.
	* [https://drive.google.com/file/d/1nmK1RW6sFv5Inma96t8iey5AIh_LrZ9U/view Random Agar]: a soup searcher by [[Gabriel Nivasch]] supporting periodic grids, able to find [[wick]]s and [[agar]]s in addition to oscillators.		* [https://drive.google.com/file/d/1nmK1RW6sFv5Inma96t8iey5AIh_LrZ9U/view Random Agar] ([https://www.gabrielnivasch.org/fun/life/random-agar README page]): a soup searcher by [[Gabriel Nivasch]] supporting periodic grids, able to find [[wick]]s and [[agar]]s in addition to oscillators.

	=== Glider syntheses ===		=== Glider syntheses ===

DroneBetter: Replace Random Agar link with one from https://www.gabrielnivasch.org/fun/life (the previous one now 404's)

2022-10-03T22:50:05Z

Replace Random Agar link with one from https://www.gabrielnivasch.org/fun/life (the previous one now 404's)

← Older revision		Revision as of 22:50, 3 October 2022
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	* [https://www.ics.uci.edu/~eppstein/ca/gsearch.c gsearch]: brute-force search of small rectangular soups, with the ability to detect if the pattern evolves into an [[oscillator]], [[spaceship]], [[replicator]], or [[puffer]].		* [https://www.ics.uci.edu/~eppstein/ca/gsearch.c gsearch]: brute-force search of small rectangular soups, with the ability to detect if the pattern evolves into an [[oscillator]], [[spaceship]], [[replicator]], or [[puffer]].
	* [[apgsearch]]: family of distributed search programs which run pseudorandom soups and report to a centralised server, [[Catagolue]]. It found the [[pufferfish]] and [[Rich's p16]], in addition to rediscovering many known patterns and providing useful [[predecessor]]s thereof.		* [[apgsearch]]: family of distributed search programs which run pseudorandom soups and report to a centralised server, [[Catagolue]]. It found the [[pufferfish]] and [[Rich's p16]], in addition to rediscovering many known patterns and providing useful [[predecessor]]s thereof.
	* [~~http~~://~~www~~.~~gabrielnivasch~~.~~org~~/~~fun~~/~~life~~/~~RandomAgar11.zip?attredirects=0~~ Random Agar]: a soup searcher by [[Gabriel Nivasch]] supporting periodic grids, able to find [[wick]]s and [[agar]]s in addition to oscillators.		* [https://drive.google.com/file/d/1nmK1RW6sFv5Inma96t8iey5AIh_LrZ9U/view Random Agar]: a soup searcher by [[Gabriel Nivasch]] supporting periodic grids, able to find [[wick]]s and [[agar]]s in addition to oscillators.

	=== Glider syntheses ===		=== Glider syntheses ===

← Older revision		Revision as of 15:15, 7 June 2023
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	* [[gfind]]: this is a well-known breadth-first spaceship finder. It was written in C by [[David Eppstein]], who used it to find the [[weekender]]. Paul Tooke used it to find the [[dragon]]. It finds extensions of partial results by means of [[de Bruijn graphs]].		* [[gfind]]: this is a well-known breadth-first spaceship finder. It was written in C by [[David Eppstein]], who used it to find the [[weekender]]. Paul Tooke used it to find the [[dragon]]. It finds extensions of partial results by means of [[de Bruijn graphs]].
	* [https://github.com/rokicki/ntzfind ~~zfind~~]: a program made by ~~the user '~~zdr', who used it to find the [[copperhead]]. It differs from gfind in that partial extension is performed by a memory-intensive lookup table, making it suitable for narrow spaceships of relatively high periods. Improved by [[Matthias Merzenich]], [[Praosylen]] and [[Tomas Rokicki]], and renamed '''ntzfind'''.		* [[zfind]] ([https://github.com/rokicki/ntzfind GitHub link]): a program made by [[zdr]], who used it to find the [[copperhead]]. It differs from gfind in that partial extension is performed by a memory-intensive lookup table, making it suitable for narrow spaceships of relatively high periods. Improved by [[Matthias Merzenich]], [[Praosylen]] and [[Tomas Rokicki]], and renamed '''ntzfind'''.
	* [https://conwaylife.com/forums/viewtopic.php?f=9&t=3549 ~~ofind~~]: a breadth-first oscillator search program by David Eppstein, differing from gfind in its handling of [[stator]] cells and its approach of extending all [[phase]]s simultaneously.		* [[ofind]] ([https://conwaylife.com/forums/viewtopic.php?f=9&t=3549 forum thread]): a breadth-first oscillator search program by David Eppstein, differing from gfind in its handling of [[stator]] cells and its approach of extending all [[phase]]s simultaneously.
	* '''knight.*''': similar to gfind, but only stores one phase of the partial. This was written by [[Tim Coe]] to find spaceships, and succeeded in discovering the [[spaghetti monster]].		* '''knight.*''': similar to gfind, but only stores one phase of the partial. This was written by [[Tim Coe]] to find spaceships, and succeeded in discovering the [[spaghetti monster]].
	* [https://github.com/Matthias-Merzenich/qfind ~~qfind~~]: parallelised version of zfind, with some features of gfind. Maintained by [[Matthias Merzenich]].		* [[qfind]] ([https://github.com/Matthias-Merzenich/qfind GitHub link]): parallelised version of zfind, with some features of gfind. Maintained by [[Matthias Merzenich]].

	=== Cell-by-cell ===		=== Cell-by-cell ===
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	* [[lifesrc]]: the canonical search program, by David Bell. The programs [[JLS]] and [[WLS]] are derivatives thereof.		* [[lifesrc]]: the canonical search program, by David Bell. The programs [[JLS]] and [[WLS]] are derivatives thereof.
	* [[Logic Life Search]]: a Python program by Oscar Cunningham which serves as a frontend to one of several different SAT solvers.		* [[Logic Life Search]]: a Python program by Oscar Cunningham which serves as a frontend to one of several different SAT solvers.
	* [https://conwaylife.com/forums/viewtopic.php?p=86954 dr]: a search program by [[Dean Hickerson]] for finding stabilisations of perturbations moving across a stable background. It can find [[billiard table]] oscillators, signals, and eaters. Written in C.		* [[dr]] ([https://conwaylife.com/forums/viewtopic.php?p=86954 forum link]): a search program by [[Dean Hickerson]] for finding stabilisations of perturbations moving across a stable background. It can find [[billiard table]] oscillators, signals, and eaters. Written in C.

	=== Catalysis ===		=== Catalysis ===
	These programs attempt to perturb a reaction by placing [[catalyst]]s at the edge of the reaction envelope. The main use of the first five programs is finding new [[Herschel]] [[conduit]]s and other stable technology. The remaining programs are CatForce variants that have been used since 2020 to search for oscillator stabilizations, partly in an attempt to fill in the remaining missing oscillator periods (see [[Omniperiodic]]).		These programs attempt to perturb a reaction by placing [[catalyst]]s at the edge of the reaction [[envelope]]. The main use of the first five programs is finding new [[Herschel]] [[conduit]]s and other [[stable technology]]. The remaining programs are CatForce variants that have been used since 2020 to search for oscillator stabilizations, partly in an attempt to fill in the remaining missing oscillator periods (see [[Omniperiodic]]).

	* '''catalyst''': the original catalysis search program by [[Gabriel Nivasch]]. This found the [[boojum reflector]].		* '''catalyst''': the original catalysis search program by [[Gabriel Nivasch]]. This found the [[boojum reflector]].
	* '''catgl''': [[Dave Greene]]'s modification of catalyst with the ability to detect and remove escaping [[glider]]s.		* '''catgl''': [[Dave Greene]]'s modification of catalyst with the ability to detect and remove escaping [[glider]]s.
	* [[ptbsearch]]: a catalysis search program by [[Paul Callahan]].		* [[ptbsearch]]: a catalysis search program by [[Paul Callahan]].
	* [https://conwaylife.com/forums/viewtopic.php?f=9&t=2246 ~~CollisionsSearch~~]: a catalysis search program by 'Guam', written in Delphi.		* [[CollisionsSearch]] ([https://conwaylife.com/forums/viewtopic.php?f=9&t=2246 forum thread]): a catalysis search program by 'Guam', written in Delphi.
	* [https://github.com/simsim314/CatForce ~~CatForce~~]: a catalysis search program by [[Michael Simkin]].		* [[CatForce]] ([https://github.com/simsim314/CatForce GitHub link]): a catalysis search program by [[Michael Simkin]].
	* [https://github.com/mvr/CatForce ~~CatForce variant~~] that includes symmetry options by [[Mitchell Riley]].		* CatForce variant ([https://github.com/mvr/CatForce GitHub link]) that includes symmetry options by [[Mitchell Riley]].
	* [https://github.com/luke-kiernan/CatForce/tree/osc_search_revisited ~~CatForce-based oscillator searcher~~] by [[Luke Kiernan]].		* CatForce-based oscillator searcher ([https://github.com/luke-kiernan/CatForce/tree/osc_search_revisited GitHub link]) by [[Luke Kiernan]].
	* [https://github.com/nicobrownmath/LocalForce ~~LocalForce~~]: a CatForce-based oscillator searcher by [[Nico Brown]]. It includes [https://github.com/nicobrownmath/LocalForce/tree/periodic ~~a version~~] ~~for searching with periodic catalysts~~.		* LocalForce ([https://github.com/nicobrownmath/LocalForce GitHub link]): a CatForce-based oscillator searcher by [[Nico Brown]]. It includes a version for searching with periodic catalysts ([https://github.com/nicobrownmath/LocalForce/tree/periodic GitHub link]).

	=== Soup searchers ===		=== Soup searchers ===
	Instead of constructing a pattern piecewise, these programs run initial seeds in a cellular automaton and observe the resulting behaviour.		Instead of constructing a pattern piecewise, these programs run initial seeds in a cellular automaton and observe the resulting behaviour.

	* [https://www.ics.uci.edu/~eppstein/ca/gsearch.c ~~gsearch~~]: brute-force search of small rectangular soups, with the ability to detect if the pattern evolves into an [[oscillator]], [[spaceship]], [[replicator]], or [[puffer]].		* [[gsearch]] ([https://www.ics.uci.edu/~eppstein/ca/gsearch.c external link]): brute-force search of small rectangular soups, with the ability to detect if the pattern evolves into an [[oscillator]], [[spaceship]], [[replicator]], or [[puffer]].
	* [[apgsearch]]: family of distributed search programs which run pseudorandom soups and report to a centralised server, [[Catagolue]]. It found the [[pufferfish]] and [[Rich's p16]], in addition to rediscovering many known patterns and providing useful [[predecessor]]s thereof.		* [[apgsearch]]: family of distributed search programs which run pseudorandom soups and report to a centralised server, [[Catagolue]]. It found the [[pufferfish]] and [[Rich's p16]], in addition to rediscovering many known patterns and providing useful [[predecessor]]s thereof.
	* [https://drive.google.com/file/d/1nmK1RW6sFv5Inma96t8iey5AIh_LrZ9U/view ~~Random Agar~~] ([https://www.gabrielnivasch.org/fun/life/random-agar README page]): a soup searcher by [[Gabriel Nivasch]] supporting periodic grids, able to find [[wick]]s and [[agar]]s in addition to oscillators.		* [[Random Agar]] ([https://drive.google.com/file/d/1nmK1RW6sFv5Inma96t8iey5AIh_LrZ9U/view Google Drive link], [https://www.gabrielnivasch.org/fun/life/random-agar README page]): a soup searcher by [[Gabriel Nivasch]] supporting periodic grids, able to find [[wick]]s and [[agar]]s in addition to oscillators.

	=== Glider syntheses ===		=== Glider syntheses ===