Sir Robin

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Sir Robin
#N Sir Robin #O Adam P. Goucher, Tom Rokicki; 2018 #C The first elementary knightship to be found in Conway's Game of Life. #C http://conwaylife.com/wiki/282P6H2V1 x = 31, y = 79, rule = B3/S23 4b2o$4bo2bo$4bo3bo$6b3o$2b2o6b4o$2bob2o4b4o$bo4bo6b3o$2b4o4b2o3bo$o9b 2o$bo3bo$6b3o2b2o2bo$2b2o7bo4bo$13bob2o$10b2o6bo$11b2ob3obo$10b2o3bo2b o$10bobo2b2o$10bo2bobobo$10b3o6bo$11bobobo3bo$14b2obobo$11bo6b3o2$11bo 9bo$11bo3bo6bo$12bo5b5o$12b3o$16b2o$13b3o2bo$11bob3obo$10bo3bo2bo$11bo 4b2ob3o$13b4obo4b2o$13bob4o4b2o$19bo$20bo2b2o$20b2o$21b5o$25b2o$19b3o 6bo$20bobo3bobo$19bo3bo3bo$19bo3b2o$18bo6bob3o$19b2o3bo3b2o$20b4o2bo2b o$22b2o3bo$21bo$21b2obo$20bo$19b5o$19bo4bo$18b3ob3o$18bob5o$18bo$20bo$ 16bo4b4o$20b4ob2o$17b3o4bo$24bobo$28bo$24bo2b2o$25b3o$22b2o$21b3o5bo$ 24b2o2bobo$21bo2b3obobo$22b2obo2bo$24bobo2b2o$26b2o$22b3o4bo$22b3o4bo$ 23b2o3b3o$24b2ob2o$25b2o$25bo2$24b2o$26bo! #C [[ THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 6 -1/6 -1/3 THUMBSIZE 2 HEIGHT 480 ZOOM 4 GPS 12 ]]
Pattern type Spaceship
Number of cells 282
Bounding box 31×79
Direction Oblique
Slope 2
Period 6
Mod 6
Speed (2,1)c/6
Heat 271
Discovered by Adam P. Goucher
Tomas Rokicki
Year of discovery 2018

Sir Robin[note 1] (also known by its systematic name 282P6H2V1, and alternatively called seahorse) is a (2,1)c/6 spaceship found by Adam P. Goucher on March 6, 2018 using his ikpx search program. It is based on a partial found by Tomas Rokicki, which makes up about 62% of the ship,[1] and which was itself an independent rediscovery of roughly half of a partial found by Josh Ball in April 2017.[2] Sir Robin is the first elementary knightship in Conway's Game of Life.

A scientific paper describing the method used to find the ship is forthcoming.[3]

Partials

Josh Ball's original partial from April 2017 is shown below:

#O Josh Ball, April 2017 #C Knightship partial, later independently rediscovered in extended form by Tom Rokicki #C and developed into a true elementary knightship, Sir Robin, by Adam P. Goucher. #C http://conwaylife.com/wiki/Partial_result #C http://conwaylife.com/wiki/Sir_Robin x = 26, y = 31, rule = B3/S23 4b3o$3bo2b2o$3bo4bo2$3b3o3b2ob3o$b2obobo4bob2o$3bo2bo4bo2b2o$o2bo8bo$o 4bo2b2o2bo2bo$bob3o2b2o3b2o$3b2obob2obo3bo$9b2ob3o$9bo5bo$12b3o2b3o$ 15bob2o$10b2obo3b3o$10b2o2bo2b2o$12b4o3bo$13b2obo2bo$11b2obobobo$14bo$ 11bo7b2o$12b2o5b2o$14b2obo$16b3o2bobo$16b2o3bo$17bo$18b5obo$19b2o2b3o$ 19b2o4bo$23b2o! #C [[ THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ ZOOM 16 THUMBSIZE 2 WIDTH 640 HEIGHT 560 GPS 6 ]]
(click above to open LifeViewer)

Synthesis

No glider synthesis for Sir Robin exists as of March 10, 2018; finding a synthesis is considered a challenging task at best, due to the large size of the ship, and the amount of space dust it contains.

Reactions

Martin Grant constructed a Sir Robin eater with a repeat time of 557 on March 8, 2018:[4]

#N Sir Robin eater #O Martin Grant; March 2018 #C Eater for Sir Robin (but not his minstrels), repeat time 557. #C http://conwaylife.com/wiki/Sir_Robin #C http://www.conwaylife.com/forums/viewtopic.php?p=57499#p57499 x = 176, y = 354, rule = B3/S23 67b2o$67bobo$69bo4b2o$44b2o19b4ob2o2bo2bo$44bobo18bo2bobobobob2o$46bo 4b2o15bobobobo$42b4ob2o2bo2bo14b2obobo$42bo2bobobobob2o18bo$45bobobobo $46b2obobo7b2o$50bo9bo7b2o$60bobo5b2o$36b2o23b2o$37bo7b2o$37bobo5b2o$ 38b2o$27b2o$26bo2bo3b2o$26bobo3bobo$27bob4obob2o33b2o22bo$29bo4bo2bo 33bo3bo17b3o$28bo3b2obo36b4o16bo$27bo3bobob2o11b2o42b2o$27b2o3bo15bo 21b4o$49b3o17bo3bo$21b2o28bo17b2o29b2o$22bo78bo$22bobo76bob2o$23b2o52b 2o14b2o4b3o2bo$78bo14b2o3bo3b2o$78bob2o16b4o$70b2o4b3o2bo2b2o15bo$70b 2o3bo3bobobobo12b3o$75b4o2bobo13bo$61b2o15bobo2bo14b5o$60bobo12b3o2bob o19bo$60bo13bo5b2o18bo$59b2o14b5o20b2o$79bo$77bo$77b2o9$63bo$63b3o$66b o$65b2o2$24b2o$23bobo$23bo$22b2o2$75b2o$68b2o5bobo$58b2o8b2o7bo$58bo 18b2o$56bobo$56b2o6bo$63bobob2o$63bobobobo$60b2obobobobo2bo$60bo2bo2b 2ob4o$62b2o4bo$68bobo$69b2o4$9bo$9b3o$12bo$11b2o14b2o$26bobo$26bo$3b2o 20b2o$3bo$2obo$o2b3o4b2o$b2o3bo3b2o$3b4o$3bo15b2o$4b3o12bobo$7bo13bo 34b2o$2b5o14b2o33bo2bo$2bo53bo3bo$4bo53b3o$3b2o28b2o19b2o6b4o$33b2o19b ob2o4b4o$53bo4bo6b3o$54b4o4b2o3bo$52bo9b2o$53bo3bo$35bo22b3o2b2o2bo$ 33b3o18b2o7bo4bo$32bo32bob2o$32b2o28b2o6bo$63b2ob3obo$62b2o3bo2bo$62bo bo2b2o$62bo2bobobo$62b3o6bo$63bobobo3bo$22b2o42b2obobo$21bobo5b2o32bo 6b3o$21bo7b2o$20b2o41bo9bo$63bo3bo6bo$34bo29bo5b5o$30b2obobo28b3o$29bo bobobo32b2o$26bo2bobobobob2o26b3o2bo$26b4ob2o2bo2bo24bob3obo$30bo4b2o 25bo3bo2bo$28bobo32bo4b2ob3o$28b2o35b4obo4b2o$65bob4o4b2o$71bo$72bo2b 2o$72b2o$73b5o$77b2o$71b3o6bo$72bobo3bobo$71bo3bo3bo$71bo3b2o$70bo6bob 3o$71b2o3bo3b2o$72b4o2bo2bo$74b2o3bo$73bo$73b2obo$72bo$71b5o$71bo4bo$ 70b3ob3o$70bob5o$70bo$72bo$68bo4b4o$72b4ob2o$69b3o4bo$76bobo$80bo$76bo 2b2o$77b3o$74b2o$73b3o5bo$76b2o2bobo$73bo2b3obobo$74b2obo2bo$76bobo2b 2o$78b2o$74b3o4bo$74b3o4bo$75b2o3b3o$76b2ob2o$77b2o$77bo2$76b2o$78bo 108$149b2o$148b2o$150b2obo$148bo3b3ob2o$147b6ob2o2bo$146b2ob2o4bo$146b o4bo6bobo$146b5o4b3o2bo$146b3obo4b2o$151b2o2bobo$147bo3b2o3b2o$152bo3b o2bobo$155b3o2b3o$155b2obo$157bob3ob2o$155bo2bo$154b2obo2bobo$154b2o2b 3o$155bo2bo2bobo$155b2obob2o2b2o$157bob3o$163b3o$164b2o2$156b2o6bo2bo$ 156b2obo4b4o$157b2o3b5o$157bo3b2o$157b2o4bo$157bo4b2o$155b5o2bo2bo$ 158bo5b2o$157b2o6bob3o$158bo4b2o3b2o$161b4o$164b3o$165bo4bo$165b7o$ 168bob2o$164b3o3b2o$167bo5bo$164b2ob3o2bo$163b2o3b2ob2o$163bobo2bobobo bo$164b2ob5o3bo$164b2o3bo2bobo$165bo2bo$166bo$165b3o$164bo$164bob3o$ 169bo$163bo6bo$162b2obo3bo$165bob2o$166b3o$169b2o$162b4o4bo$163b5obobo $163bo6bo$170bo2bo$170bo2bo$168b6o$166bob2obo$166bo7bo$166bo4b3obo$ 167bo3bobo$167b2o4bobo$168b2obob2o$169bob5o$167bob2o2bo$170bo$167bo4bo 2bo$168bo3b2o$172bo$170b2o$169b2o$170bo$170bo! #C [[ THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ]]
(click above to open LifeViewer)

Tagalongs

A tagalong dubbed the Minstrel[note 2], or alternatively Minstrel 1, was discovered by Adam P. Goucher on July 15, 2018, after resuming the original ikpx search:[5]

Dave Greene modified Martin Grant's Sir Robin eater to act as a Minstrel 1 detector/remover the same day.[6]

On July 19, 2018, Adam P. Goucher found a second and third minstrel, dubbed Minstrel 2 and Minstrel 3, that follow Sir Robin more closely.[7] Shown below are all three minstrels, in order from left to right:

x = 146, y = 104, rule = B3/S23 4b3o47b3o47b3o$3bo2b2o45bo2b2o45bo2b2o$3bo4bo44bo4bo44bo4bo2$3b3o3b2ob 3o38b3o3b2ob3o38b3o3b2ob3o$b2obobo4bob2o36b2obobo4bob2o36b2obobo4bob2o $3bo2bo4bo2b2o37bo2bo4bo2b2o37bo2bo4bo2b2o$o2bo8bo37bo2bo8bo37bo2bo8bo $o4bo2b2o2bo2bo34bo4bo2b2o2bo2bo34bo4bo2b2o2bo2bo$bob3o2b2o3b2o36bob3o 2b2o3b2o36bob3o2b2o3b2o$3b2obob2obo3bo37b2obob2obo3bo37b2obob2obo3bo$ 9b2ob3o44b2ob3o44b2ob3o$9bo5bo43bo5bo43bo5bo$12b3o2b3o42b3o2b3o42b3o2b 3o$15bob2o46bob2o46bob2o$10b2obo3b3o40b2obo3b3o40b2obo3b3o$10b2o2bo2b 2o41b2o2bo2b2o41b2o2bo2b2o$12b4o3bo42b4o3bo42b4o3bo$13b2obo2bo43b2obo 2bo43b2obo2bo$11b2obobobo42b2obobobo42b2obobobo$14bo49bo49bo$11bo7b2o 40bo7b2o40bo7b2o$12b2o5bo42b2o5bo42b2o5bo$13bob2o2bob2o40bob2o2bob2o 40bob2o2bob2o$19bo3bo45bo3bo45bo3bo$12b3o5bo41b3o5bo41b3o5bo2$16b3o3bo 43b3o3bo43b3o3bo$12bo2bo46bo2bo46bo2bo$11b2obo46b2obo46b2obo$12bob2o3b 2o41bob2o3b2o41bob2o3b2o$14b2ob4o43b2ob4o43b2ob4o$22b3o47b3o47b3o$12b 2ob2o3bo2bo38b2ob2o3bo2bo38b2ob2o3bo2bo$21bob2o46bob2o46bob2o$21b2o48b 2o48b2o2$21b5o45b5o45b5o$20b5ob2o42b5ob2o42b5ob2o$20bo6b2o41bo6b2o41bo 6b2o$21b2o48b2o48b2o$23b2o48b2o48b2o$18b3o47b3o47b3o$23b2ob4o43b2ob4o 43b2ob4o$18bo2b3o2bobo39bo2b3o2bobo39bo2b3o2bobo$23b2o2b2o44b2o2b2o44b 2o2b2o$20bo2bo46bo2bo46bo2bo$23bo49bo49bo$20bo2bo46bo2bo46bo2bo$20b5o 45b5o45b5o2$19b2obo46b2obo46b2obo$19b2ob2o45b2ob2o45b2ob2o$18bob2obobo 42bob2obobo42bob2obobo$18bo3bobo43bo3bobo43bo3bobo$18b8o42b8o42b8o$18b o7bo41bo7bo41bo7bo$18bo2bo3b3o40bo2bo3b3o40bo2bo3b3o$19bo7b2o40bo7b2o 40bo7b2o$24b5o45b5o45b5o$21bo7bo41bo7bo41bo7bo$23bo49bo49bo$23bo2bo3bo 42bo2bo3bo42bo2bo3bo2$21b2obo2bobo41b2obo2bobo41b2obo2bobo$21b2obo4b2o 40b2obo4b2o40b2obo4b2o$25bobo47bobo47bobo$24b2obob2o43b2obob2o43b2obob 2o$24b2obobo44b2obobo44b2obobo$24b2ob2o45b2ob2o45b2ob2o$24b2o3bo44b2o 3bo44b2o3bo$24b4obo44b4obo44b4obo$24b4obo44b4obo44b4obo$28b3o47b3o47b 3o$29b2o48b2o48b2o$26b4o46b4o46b4o$25b4o46b6o44b6o$25bo6bo42bo49bo$31b 3o46bobo47bobo$31b2o2bo46b3o47b3o$32bo3bo42b2o2b2o44b2o2b2o$33bobo45bo 2bo46bo2bo$32bo2bo2b3o43bo49bo$31bo2b2o46bob3o45bob3o$30bo4b5o42b5o45b 5o$30bo2bob3o46bo49bo$31bo52bobobo45bobobo$33bobo48b2o2b2o44b2o2b2o$ 34b2o48b2o2bobo43b2o2bobo$35bo48b2ob2o45b2ob2o$34b3o47bo2b5o42bo2b5o$ 88b2o3b2o43b2o3b2o$32b2o50bob2o4b2obo38bob2o4b2obo$35b3o47b2o8bo39b2o 8bo$31bo2bo50bo4bo3bo40bo4bo3bo$31bo2bo55bo49bo$31bo5bo51b2o2bo45b2o2b o$30b2ob2obobo49b2o48b2o$30b2ob2o3bo48b3o47b3o$31b2obo52b3o47b3o$32bob 2obo50bobo46b3o$89bo47b3o$138bobo$139bo! #C [[ THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ TRACKLOOP 6 -1/6 -1/3 THUMBSIZE 2 WIDTH 720 HEIGHT 480 ZOOM 4 GPS 12 ]]
Minstrel 1 (left), Minstrel 2 (middle), Minstrel 3 (right) (click above to open LifeViewer)

On July 21, 2018, Goldtiger997 built a stable circuit that can accept any of the four known knightships, emitting a glider in one of four directions (depending on the input spaceship) along with a Sir Robin travelling along the original path. When the original input is a Sir Robin, this circuit is a Heisenburp; otherwise, it is a downconverter. This was later optimised by including a bend in the 2c/3 signal wire.

Sir Robin is also partially capable of supporting knightwave.[8]

Notes

  1. The name is in reference to Sir Robin, the knight who "bravely ran away", from Monty Python's movie Monty Python and the Holy Grail.
  2. "Minstrel", like "Sir Robin", is a reference to Monty Python's movie Monty Python and the Holy Grail.

References

  1. Adam P. Goucher. Elementary knightship (discussion thread) at the ConwayLife.com forums
  2. Josh Ball. Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  3. Adam P. Goucher. Re: Elementary knightship (discussion thread) at the ConwayLife.com forums
  4. Martin Grant. Re: Elementary knightship (discussion thread) at the ConwayLife.com forums
  5. Adam P. Goucher. Minstrel (discussion thread) at the ConwayLife.com forums
  6. Dave Greene. Re: Minstrel (discussion thread) at the ConwayLife.com forums
  7. Adam P. Goucher. Re: Minstrel (discussion thread) at the ConwayLife.com forums
  8. http://www.conwaylife.com/forums/viewtopic.php?f=2&t=3303#p57379

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