User:MDA/OCA:Haven

Haven
x=64, y = 64, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak ! #C [[ THEME Inverse ]] #C [[ RANDOMIZE2 THUMBLAUNCH THUMBNAIL THUMBSIZE 2 GRID ZOOM 6 WIDTH 600 HEIGHT 600 LABEL 90 -20 2 "#G" AUTOSTART PAUSE 2 GPS 8 LOOP 256 ]] LifeViewer-generated pseudorandom soup
Rulestring	2-a3-a4nq5aeknr6-ak/3-ry4acenqt5eir6-ek B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak
Character	Chaotic
Black/white reversal	B012ak3cijqy4-rw5a6a78/S012ek3-eir4jknqtyz5ry678

Haven is an isotropic 2-state rule discovered by MDA on March 21st, 2026. It is notable for supporting Life’s standard xWSSes and OWSSes of arbitrary length.

It also has multiple kinds of infinitely-expanding OWSSes, detailed in the Quadratic Growth subsection.

Oscillators

Haven has known oscillators of period 1, 2, 3, 4, 6, 7, 8, 13, 14, 18, 36, and 116:

x = 78, y = 45, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak 25b2o$25bobo2b2o31b2o$26bo2bo2bo29bob2o5bo2bo$b2o10bo13b4o2bo5bo3bo19b 2o6bo2bo$obo10bo17b2o6bo2b2o27bo2bo$bo11bo13bobo9bobobo27bo2bo$26bob2o b2o$27b2obo2bo$31b2o5$8b3o4b3o$7bobo6bobo$8b2o6b2o7b2o$bo8bo4bo10b2o$ b2o7bo4bo11bobo$bo6b2o6b2o11b3o$7bobo6bobo12bo26b2o2b2o2b4o2b2o2b2o$8b 3o4b3o41bo3bo8bo3bo$59bo3bo8bo3bo$58b2o2b2o2b4o2b2o2b2o5$29bo$27b5o$26b o2bo2bo$26bobobobo8bo$25b3obob3o6b3o$26bobobobo8b3o$26bo2bo2bo9bo$27b 5o$29bo7$30b2o$27bobobo$30b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

SKOP collection, contains all known periods (click above to open LifeViewer)

The p116 is isotropically endemic to Haven.

Spaceships

Haven has spaceships of speed c/2o, c/3o, c/4o, c/5o, 2c/4o, 2c/5o, c/6o, 2c/6o, 3c/6o, 4c/8o, c/3d, c/4d, c/5d, and (2,1)c/5.

x = 258, y = 80, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak 5b2o5bo21b2o16b3o17b3o19bo15b3o20bo17bo2bo21bo18b3o14bo12bo16bo12bo$4b 2obo4b3o18b4o14b2ob3o14bo20b5o13bo2bo17b4o15b6o19bobo17bobo13b3o3bo2bo 3b3o14bobo10bobo$3b3o4b4o17b2obo2bo14b3o2bobo10b2o4bo13b2o2bo2b2o11bo 19b2o2bo15bo4bo20bo17b2ob2o12bobo10bobo14b3o10b3o$2bo8b2o17bo3bobob2o 10bo2b2o4bo11b4obo13bo2b3o2bo11bo20bo19bo2bo17bobobobobo13b2ob2o16b8o 18b2o12b2o$2b2obo5bo19b5obob2o12bo3bobo11bo4bo14bob3obo14bo58bob3ob3ob o11bobobobo11bo3b3o2b3o3bo15bo12bo$b2ob2o24bo3bo16b3o5bo10b3o3bo93bo5b o5bo8bob3ob3obo9bo3b2o4b2o3bo15bobo3b2o3bobo$bo2bo25bob3o2bobo13b3obob o14bo95b2ob3ob3ob2o27b2o3b3o2b3o3b2o13b3o3b4o3b3o$2ob2o26bob5obo14b2o 114b2o2b2ob2o2b2o9bob5obo9bob2o3bo2bo3b2obo13b16o$bo4bo2b2o28bo15bobo 134b3o3b3o14bo6bo18bo2b2o6b2o2bo$bobo3bo2bo21bo2b2o2b2o131b2o5b2o12bo 5bo10bo3b3o4b3o3bo15b3o6b3o$2bo3bo2bob3o18b2ob2o2bo150bo2bo5bo2bo7b3ob o8bob3o15b4ob2ob4o$3bo4b3obo27bo149bobo2bobo2bobo40bobo6bobo$11bo3bo 22bo151b3obo3bob3o41b4o2b4o$14b2o176b2o2bo2b2o41bo3bob2obo3bo$12bo2bo 176b2obobob2o45b2o2b2o$12b2ob2o2b2o173bo3bo44bobo6bobo$13bob2ob3o174bo bo46bobo4bobo$13b4o3bo5bo166b3ob3o47b4o$13b4o3bo173bobobo45b3o4b3o$14b o6b2o2bo2bo165b5o43b2obo6bob2o$20bobo2b2o167b5o42b4o8b4o$21b3obobo164b o2b3o2bo39b4o10b4o$21b3o170b5o$22bo4bo166b2ob2o43b3o8b3o$23b3o165b4o3b 4o42bob6obo$24b2o165bob7obo39bob2o2b4o2b2obo$24b3o3bo161b2o2bo2b2o42bo 3b4o3bo$31b2o158bo2b2ob2o2bo$27b2o2b2o160b3ob3o48b2o$28bob2o162b2ob2o 47b2o2b2o$29bob2o160bobobobo44bo2bo2bo2bo$30b3o160b2o3b2o45b2o4b2o$30b 3o161b2ob2o44bo4b2o4bo$31bo162b5o46b8o$244b3o4b3o$194bo3bo46b3o2b3o$ 196bo48b2ob2ob2o$196bo45b3ob6ob3o$196bo46b4ob2ob4o$195b3o43bo2b2o6b2o 2bo$244b2o2b2o2b2o$243b12o$247bo2bo$244bobo4bobo$242bo3b2o2b2o3bo$241b 3ob8ob3o$243bobo6bobo$243bo10bo$247b4o$244bo2bo2bo2bo$246bo4bo$246bo4b o$242bo4bo2bo4bo$241b3o2b2o2b2o2b3o$243bobobo2bobobo$243bo3bo2bo3bo$ 242b2obob4obob2o$245b2ob2ob2o$240bo2b5o2b5o2bo$243bob3o2b3obo$242bob4o 2b4obo$244bobob2obobo$246bo4bo$243b2o2bo2bo2b2o$242bobo8bobo$243bo10bo $242b2o10b2o$242bob10obo$241b16o$243b12o$246bo4bo$245b2o4b2o$244bob2o 2b2obo$244bob6obo$244b2ob4ob2o$244bob6obo$244bo8bo$244bo3b2o3bo$245bo 6bo$247bo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 600 WIDTH 1200 ]]

Spaceship collection, contains all known speeds (click above to open LifeViewer)

The 3c/6 ship and its longer relative both have a spark on which a tagalong can be attached. The tagalong has the same kind of spark as the ship, so the tagalong is infinitely extendable:

x = 106, y = 18, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak 4bo19bo18b3o18bo18b3o18bo$2b4o16b4o15b2o2bo16b4o15b2o2bo16b4o$3o2bo14b 3o2bo14b2o2bo15b3o2bo14b2o2bo15b3o2bo$b2o15b2ob2o35b2ob2o35b2ob2o$17b 2o22bo15b2o22bo15b2o2$18bo21b3o15bo21b3o15bo$40b3o37b3o$40b3o14b3o20b 3o14b3o$57b3o37b3o$57b3o37b3o$80b3o2$79bo3bo13b3o2$81bo14bo3bo2$98bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

3c/6 spaceships in Haven, from Catagolue and assembled from components found on the same website. (click above to open LifeViewer)

The component used to extend the 3c/6 spaceship into the wider one can also be repeated. Each repetition has the same spark, on which an infinite number of tagalongs can be placed:

x = 66, y = 10, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak 4bo19bo18b3o18bo$2b4o16b4o15b2o2bo16b4o$3o2bo14b3o2bo13b3o2bo15b3o2bo$ b2o15b2ob2o14b3o18b2ob2o$17b2o16b2ob2o16b3o$34b2o18b3o$18bo33b2ob2o$ 35bo15b2o2$52bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

More 3c/6 spaceships in Haven, from Catagolue and assembled from components found on the same website. (click above to open LifeViewer)

Spaceship Attributions

Dates in italic are uncertain.

Speed	Date	Discoverer	Search Program	Minimal?
c/2o	March 21st, 2026	MDA	ikpx2	Yes
c/3o	March 21st, 2026	MDA	LLSSS	Yes
c/4o	March 21st, 2026	MDA	qfind
c/5o	March 21st, 2026	MDA	qfind
c/6o	June 19th, 2026	FWKnightship	qfind
2c/4o	March 21st, 2026	MDA	manual	Yes
2c/5o	June 10th, 2026	vilc	LLSSS
2c/6o	June 2026	MDA	qfind
3c/6o	March 24th, 2026	MDA	apgsearch	Yes
4c/8o	March 24th, 2026	MDA	apgsearch	Yes
c/3d	March 21st, 2026	MDA	ikpx2	Yes
c/4d	March 21st, 2026	MDA	ikpx2	Yes
c/5d	March 21st, 2026	MDA	manual	Yes
2c/6d	September 8th, 2026	MDA	LLSSS-ng
c/5k	March 22nd, 2026	MDA	ikpx2

Infinite Growth

Linear Growth

The first linear-growth pattern found in Haven is a c/3d spaceship stretching a wick which resembles a barberpole in Life:

x = 9, y = 10, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak 2b4o$2bo2b3o$bo3bo$6o2$3b4o$4b3o$4b3obo$8bo$8bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

c/3d wickstretcher in Haven, found by MDA using ikpx2 (click above to open LifeViewer) Catagolue: here

The wick it stretches can be eaten by a proper wickeater:

x = 69, y = 68, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak 3b2o$2b5o$b3o$2obo$b5o$b6o2$3bo3bo2$5bobobo2$9bobo2$11bobo2$13bobo2$ 15bobo2$17bobo2$19bobo2$21bobo2$23bobo2$25bobo2$27bobo2$29bobo2$31bobo 2$33bobo2$35bobo2$37bobo2$39bobo2$41bobo2$43bobo2$45bobo2$47bobo2$49bo bo2$51bobo2$53bobo3bo$58bob2o$55bob4o$58b3obo$57bobo2bo$57b2obobo$57bo 2b2obo$59b7o$63b4o$62bobo3bo$62bobo3bo$63bo3b2o$64bo3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

c/3d wickstretcher + wickeater in Haven, found by MDA using ikpx2 (click above to open LifeViewer) Catagolue: here

By combining three out-of-phase wickstretchers, one-per-generation growth is possible:

x = 35, y = 11, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak 16b2o10bo2bo$2b4o9b5o7b5o$2bo2b3o6b3o9bo2bobo$bo3bo7b2obo9bo2bo$6o8b5o 7bo2bo2bo$14b6o$3b4o21b5o$4b3o9bo3bo$4b3obo23bobo$8bo9bob3o11bo$8bo25b o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

One per generation in Haven, found by MDA by hand (click above to open LifeViewer)

A series of 2c/4 puffers have been independently discovered by MDA and FWKnightship:

x = 332, y = 60, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak 301b3o$10bo58b3o48bo179bo2bo$9b3o18b3o36bo2bo7bo38b3o57b3o56b3o62bo$8b 2obo18bo2bo35bo9b3o36b2obo57bo2bo55bo2bo57bo3bo$8b3o19bo38bo3bo4b2obo 36b3o58bo58bo60bo3bobo$8b3o19bo3bo32bobo3bo4b3o37b3o10bo47bo3bo54bo3bo 56bo3bo17b3o$8b3ob3o13bobo3bo34bo3bo4b3o37b3ob3o5b3o44bobo3bo11b3o38bo bo3bo56bo3bo3bo12bo2bo$8b3ob3o15bo3bo30bo3bo3bo4b3ob3o33b3ob3o4b2obo 46bo3bo10bo2bo40bo3bo54bobo3bo3bo15bo$8b3ob3o11bo3bo3bo34bo3bo2bob3ob 3o33b3ob3o4b3o43bo3bo3bo13bo36bo3bo3bo56bo3bo3bo11bo3bo$4b3ob3ob3o11bo 3bo3bobo30bobo8b3ob3o29b3ob3ob3o4b3o43bo3bo3bobo7bo3bo36bo3bo3bobo50bo 3bo3bo3bo11bo3bobo$4b3ob3ob3o11bo3bo3bo36bo2b3ob3ob3o29b3ob3ob3o4b3ob 3o39bo3bo3bo9bo3bobo34bo3bo3bo13b3o36bo3bo3bo3bobo9bo3bo$4b3ob3ob3o11b o3bo3bo3bo35b3ob3ob3o29b3ob3ob3o4b3ob3o39bo3bo3bo3bo5bo3bo36bo3bo3bo3b o8bo2bo36bo3bo3bo3bo11bo3bo3bo$4b3ob3ob3ob3o5bobo3bo3bo3bo39b3ob3o29b 3ob3ob3o4b3ob3o37bobo3bo3bo3bo5bo3bo3bo30bobo3bo3bo3bo11bo36bo3bo3bo3b o3bo5bobo3bo3bo$4b3ob3ob3ob3o7bo3bo3bo3bo39b3ob3ob3o25b3ob3ob3o4b3ob3o 39bo3bo3bo3bo3bobo3bo3bo32bo3bo3bo3bo7bo3bo34bobo3bo3bo3bo3bo7bo3bo3bo $4b3ob3ob3ob3o3bo3bo3bo3bo3bo39b3ob3ob3o25b3ob3ob3o4b3ob3o35bo3bo3bo3b o3bo5bo3bo3bo28bo3bo3bo3bo3bo7bo3bobo34bo3bo3bo3bo3bo3bo3bo3bo3bo$3ob 3ob3ob3ob3o3bo3bo3bo3bo3bobo35bob3ob3ob3o21b3ob3ob3ob3o4b3ob3o35bo3bo 3bo3bo3bo5bo3bo3bo28bo3bo3bo3bo3bobo5bo3bo36bo3bo3bo3bo3bo3bo3bo3bo3bo bo$3ob3ob3ob3ob3o3bo3bo3bo3bo3bo37bo5b3o25b3ob3ob3ob3o4b3ob3ob3o31bo3b o3bo3bo3bo5bo3bo3bobo26bo3bo3bo3bo3bo7bo3bo3bo30bobo3bo3bo3bo7bo3bo3bo 3bo$4b3ob3ob3ob3obobo3bo3bo3bo3bo37bo5bobo29b3ob3ob3o4b3ob3ob3o31bo3bo 3bo3bo3bo5bo3bo3bo28bo3bo3bo3bo3bo3bobobo3bo3bo36bo3bo3bobo5bo3bo3bo3b o3bo$4b3ob3ob3o5b3o3bo3bo3bo3bobo73b3ob3ob3o4b3ob3ob3o35bo3bo3bo3bo5bo 3bo3bo3bo28bo3bo3bo3bobobo3bo3bo3bo34bobo3bo9bobo3bo3bo3bo3bo$8b3ob3o 5bo3bobo3bo3bo83b3ob3o4b3ob3ob3o33bobo3bo3bo5bo3bo3bo3bo3bo26bobo3bo3b o7bo3bo3bo3bo40bobo5b2o2bo3bo3bo3bo3bo$8b3o19bo3bobo81b3o8b3ob3ob3o39b o3bobo3bo3bo3bo3bo3bo32bo3bobo5bo3bo3bo3bobo36bo9bo3bo3bo3bo3bo3bo$10b o17bobo89bo4b2o2b3ob3ob3o37bobo9bo3bo3bo3bo3bo30bobo11bo3bo3bo3bo48b3o bo3bo3bo3bo$32bo96b3ob3ob3ob3o37bo7bo3bo3bo3bo38bo9bo3bo3bo3bo3bo52bo 3bo3bobo$20b3o53bo50bobo3b3ob3ob3o43bo5bo3bo3bobo44bobo3bo3bo3bo3bo50b obo3bo$76bo54bob3ob3ob3o43b3obobo3bo49bo2bo3bo3bo3bo3bo56bobo$76bo49bo 2bo7b3ob3o43bo9bobo46bo3bo3bo3bo3bo3bo48bobo3bo$127bobo7b3o55bo50b3obo 3bo3bo3bo$20b3o103b3o10bo114bo3bo3bobo48b3o$127bo124bobo3bo$258bobo$ 256bo$20b3o53bo$76bo168b2o$76bo167bobo$245bo$20b3o164bo$186b2o$187bo2$ 76bo50bo$76bo50bo117b2o$76bo49b3o115bobo$245bo$313b3o4$76bo$76bo168b2o $76bo167bobo$127bo117bo$126b3o4$76bo110bo$76bo108b3o57b2o$76bo110bo56b obo$245bo$313b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

2c/4 puffers discovered by MDA and independently rediscovered by FWKnightship (click above to open LifeViewer)

Quadratic Growth

The only known quadratic growth in Haven is a family of infinitely expanding OWSSes, shown below:

x = 7, y = 5, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak 3bo$bo3bo$o5bo$o5bo$7o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

Infinitely expanding OWSS, cis-odd form (click above to open LifeViewer) Catagolue: here

x = 6, y = 4, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak bo2bo$o4bo$o4bo$6o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

Infinitely expanding OWSS, cis-even form (click above to open LifeViewer)

x = 8, y = 7, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak bo$o$o$8o$7bo$7bo$6bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

Infinitely expanding OWSS, trans-odd form 1 (click above to open LifeViewer)

x = 9, y = 7, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak bo$o$o$9o$8bo$8bo$7bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

Infinitely expanding OWSS, trans-even form 1 (click above to open LifeViewer)

x = 8, y = 7, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak bo$o$o$10o$9bo$9bo$8bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

Infinitely expanding OWSS, trans-odd form 2 (click above to open LifeViewer)

x = 9, y = 7, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak bo$o$o$11o$10bo$10bo$9bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

Infinitely expanding OWSS, trans-even form 2 (click above to open LifeViewer)

Out of all six, the cis-odd form is the only one to have occurred naturally.

Evolutionary Sequences

Surprisingly, the B-heptomino still evolves into a Herschel in Haven. This has been referred to by MDA as “the Haven Herschel”:

x = 3, y = 4, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4nq5aeknr6-ak o$2o$b2o$2o! [[ STOP 72 ]] #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

“The Haven Herschel”, discovered by MDA (click above to open LifeViewer)

Variant Rules

4c Haven

4c Haven
x=64, y = 64, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4cnq5aeknr6-ak ! #C [[ THEME Inverse ]] #C [[ RANDOMIZE2 THUMBLAUNCH THUMBNAIL THUMBSIZE 2 GRID ZOOM 6 WIDTH 600 HEIGHT 600 LABEL 90 -20 2 "#G" AUTOSTART PAUSE 2 GPS 8 LOOP 256 ]] LifeViewer-generated pseudorandom soup
Rulestring	2-a3-a4cnq5aeknr6-ak/3-ry4acenqt5eir6-ek B3-ry4acenqt5eir6-ek/S2-a3-a4cnq5aeknr6-ak
Character	Chaotic
Black/white reversal	B012ak3cijqy4-erw5a6a78/S012ek3-eir4jknqtyz5ry678

4c Haven is an isotropic 2-state rule closely related to Haven. However, it is much more active and small soups can easily last for hundreds of thousands of generations.^{[citation needed]} It is a good example of an almost-exploding rule.

Most patterns in Haven are cross-compatible with 4c Haven. However, there are some exceptions, such as the 2c/5o found by vilc, this small c/3o, or the large p116.

However, two small c/3o spaceships are known:

x = 10, y = 7, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4cnq5aeknr6-ak 6bo$5b3o$5bobo$5bobo$2bo2b2obo$2obo2bo2bo$bobo5bo! [[ TRACK 0 -1/3 ]] #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

20-cell c/3o spaceship in 4c Haven, compatible with Haven and minimal in both rules (click above to open LifeViewer)

x = 13, y = 8, rule = B3-ry4acenqt5eir6-ek/S2-a3-a4cnq5aeknr6-ak 2b3o3b3o$2bobo3bobo$b2ob2ob2ob2o$b2ob2ob2ob2o$bo2bo3bo2bo$3ob2o b2ob3o$6bo$5bobo! [[ TRACK 0 -1/3 ]] #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

Small c/3o spaceship in 4c Haven, incompatible with Haven (click above to open LifeViewer)

The Haven Herschel also works in 4c Haven.

CheckerHaven

CheckerHaven
x=64, y = 64, rule = B3-ry4acnqt5eir6-ek/S2-a3-a4cnq5eknr6cin ! #C [[ THEME Inverse ]] #C [[ RANDOMIZE2 THUMBLAUNCH THUMBNAIL THUMBSIZE 2 GRID ZOOM 6 WIDTH 600 HEIGHT 600 LABEL 90 -20 2 "#G" AUTOSTART PAUSE 2 GPS 8 LOOP 256 ]] LifeViewer-generated pseudorandom soup
Rulestring	2-a3-a4cnq5eknr6cin/3-ry4acnqt5eir6-ek B3-ry4acnqt5eir6-ek/S2-a3-a4cnq5eknr6cin
Character	Chaotic
Black/white reversal	B012aek3-eknr4-erw5a6a78/S012ek3-eir4-aeirw5ry678

CheckerHaven is a variant of Haven, currently unrecognized.

It is more stable than 4c Haven and Haven, but is still chaotic enough to comply with MDA’s criteria.

It is also notable for supporting more still-lives than both of the aforementioned rules, due to S4c and the lack of B4e. Unlike Haven, CheckerHaven has no c/3d or (2,1)c/5 spaceships due to the lack of S5a.

Among its known patterns are several spaceships of speeds c/2o, 2c/4o, 3c/6o, 4c/8o, c/3o, 2c/6o, c/4o, 2c/5o, and c/4d:

x = 177, y = 84, rule = B3-ry4acnqt5eir6-ek/S2-a3-a4cnq5eknr6cin 2bo18b3o16b3o18b3o5b3o10b4o20b3o13b3o3b3o12bo5bo18bo$2obo2bo13bobobo 15bo2bo16bobobo3bobobo8bo4bo18bobobo12bobo3bobo11b3o3b3o15bo3bo$o2b2o 2bo13b3o16bo20b3o5b3o8b2o4b2o33b2ob2ob2ob2o10bobo3bobo14b7o$2ob2o2bo 12b5o15bo19b5o3b5o31bobobobo10b2ob2ob2ob2o10bobo3bobo12bo9bo$2obobobo 14bo19bo19bo7bo32b2ob3ob2o9bo2bo3bo2bo10b3o3b3o12b4o3b4o$bob2o2bo14bo 39bobobobobo30b2ob2o3b2ob2o6b3ob2ob2ob3o8b3o5b3o10bo3bo3bo3bo$b2o2b3o 56b5o32bob2o5b2obo12bo14b2obo3bob2o9bob2o7b2obo$bo4b2o56bo3bo31b2o11b 2o10bobo12bo2bo5bo2bo8bo5b3o5bo$64b5o33bo9bo27bo2bo2bo2bo2bo12b2obob2o $2bo101b2o3b2o32bo2bo2bo14b9o$4b2o59b3o35bobobobobo29b4obob4o10b5o3b5o $65bobo38b3o34bobobobo10b2o2bo2bobo2bo2b2o$64b5o38bo35bo2bo2bo11bo5b3o 5bo$65b3o36b3ob3o32b2obob2o12b2obo2bo2bob2o$65bobo35bo2b3o2bo30bo7bo9b ob3ob5ob3obo$64b5o33bo9bo27b3o7b3o10b3obobob3o$65b3o34b2o2bobo2b2o27b 2o9b2o10b3obobob3o$65b3o34bo2bo3bo2bo28bo9bo11b3obobob3o$64b5o35bob3ob o30bobo5bobo9b2obob2ob2obob2o$102b3o5b3o48bob3obobob3obo$101bo5bo5bo 46bo3b3o3b3o3bo$102bob2o3b2obo53bo3bo$105b2ob2o52b6ob6o$102b2o7b2o51bo b2ob2obo$104bo5bo53bobo3bobo$164b2obobob2o$162bobob5obobo$161b2o2b2o3b 2o2b2o$161bo2bob2ob2obo2bo$161bo13bo$161b2o5bo5b2o$163bobobobobobo2$ 167b3o$168bo$165b7o$164bob5obo$164bo3bo3bo$168bo$165bo2bo2bo$166b5o$ 165b2o3b2o$165bo2bo2bo$164b2o2bo2b2o$163b3ob3ob3o$163b3o5b3o$163b3o5b 3o$163bobo5bobo$162bo2b3ob3o2bo$161bo3b3ob3o3bo$160b3o2b3ob3o2b3o$162b o2b3ob3o2bo$162bo2b3ob3o2bo$165b3ob3o$163bob3ob3obo$165b3ob3o$161b3ob 2obob2ob3o$161b3obobobobob3o$161b3o4bo4b3o$161b3o4bo4b3o$163bobo5bobo$ 163b5ob5o$165b3ob3o$165bobobobo2$165bob3obo$165bobobobo$166b5o$165bo2b o2bo2$165bob3obo$166bo3bo$164b3o3b3o$162b2ob7ob2o$167bobo$164bobo3bobo $165bo5bo$164bob5obo$166b5o$166bo3bo$164b2o5b2o$163b3ob3ob3o$162b2o3b 3o3b2o$161b2o11b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 600 WIDTH 1200 ]]

Spaceships in CheckerHaven (click above to open LifeViewer)

All the spaceships above were found by MDA using qfind, except for the c/4d (ikpx2) and the ones compatible with Haven. For their discovery methods, see the Spaceship Attribution Subsection.

CheckerHaven has its own C1 census on Catagolue.

Haven Minor

This page is under construction. Sorry for the inconvenience.

Haven 2

This page is under construction. Sorry for the inconvenience.

Updates

This section is to be kept up to date with all the variant rules listed in this forum thread. All CA rules in this section must comply with the four criteria in the thread.