2-engine Cordership

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2-engine Cordership
x = 41, y = 49, rule = B3/S23 19b2o$19b4o$19bob2o2$20bo$19b2o$19b3o$21bo$33b2o$33b2o7$36bo$35b2o$34b o3bo$35b2o2bo$40bo$37bobo$38bo$38bo$38b2o$38b2o3$13bo10bo$12b5o5bob2o 11bo$11bo10bo3bo9bo$12b2o8b3obo9b2o$13b2o9b2o12bo$2o13bo21b3o$2o35b3o 7$8b2o$8b2o11b2o$19b2o2bo$24bo3bo$18bo5bo3bo$19bo2b2o3bobo$20b3o5bo$ 28bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 600 WIDTH 600 THUMBSIZE 2 ZOOM 8 Y 2 GRID OFF CELLBORDERS GPS 32 TRACKLOOP 96 1/12 1/12 ]]
View static image
Pattern type Spaceship
Family Cordership
Number of cells 100
Bounding box 41 × 48
Direction Diagonal
Period 96
Mod 96
Speed c/12 | 8c/96
Heat 110.4
Discovered by praosylen
Year of discovery 2017

The 2-engine Cordership is a c/12 diagonal spaceship that was discovered by praosylen on December 31, 2017.[1] It is the Cordership that uses the fewest number of switch engines known to be possible (ahead of the 3-engine Cordership) as well as the smallest Cordership in terms of population (ahead of a variant of the 4-engine Cordership) and the smallest engineered spaceship.[note 1]

The 2-engine Cordership was voted Pattern of the Year for 2017 on the ConwayLife.com forums.[5]

Reactions

Dave Greene noted that the 2-engine Cordership, like its 3-engine counterpart, can be stopped by a single glider from behind without releasing any gliders or other spaceships,[6] and updated Martin Grant's Model D Heisenburp device for the 2-engine Cordership.[6]

Dave Greene, BlinkerSpawn and Matthias Merzenich noted that the 2-engine Cordership can be eaten by a constellation of two eaters and three blocks:[6]

x = 83, y = 86, rule = B3/S23 19b2o$19b4o$19bob2o2$20bo$19b2o$19b3o$21bo$33b2o$33b2o7$36bo$35b2o$34b o3bo$35b2o2bo$40bo$37bobo$38bo$38bo$38b2o$38b2o3$13bo10bo$12b5o5bob2o 11bo$11bo10bo3bo9bo$12b2o8b3obo9b2o$13b2o9b2o12bo$2o13bo21b3o$2o35b3o 7$8b2o$8b2o11b2o$19b2o2bo$24bo3bo$18bo5bo3bo$19bo2b2o3bobo$20b3o5bo47b 2o$28bo47b2o20$79b2o$79bo$80b3o$82bo5$39b2o$39b2o4$66b2o$66bo$67b3o$ 47b2o20bo$47b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME 6 THUMBNAIL THUMBSIZE 2 ZOOM 6 HEIGHT 600 WIDTH 600 ]]
2-engine Cordership eater
(click above to open LifeViewer)
RLE: here Plaintext: here

gmc_nxtman pointed out that the 2-engine Cordership can reflect a glider 180 degrees, while preserving its mod-4 timing, resulting in an updated version of glider loop.[7]

Synthesis and seeds

Dave Greene found a 13-glider synthesis of the 2-engine Cordership on the day of its discovery,[8] which Luka Okanishi improved to 9 gliders [9]. Forum user 'vilc' found an 8-glider recipe in March 2024.[10]

Two-glider seeds using as few as 9 still lifes and one-glider seeds using 15 still lifes are known.[11][12]

#N 2-engine Cordership, slow salvo construction of 1-glider seed #O Dave Greene, 2018 #C http://conwaylife.com/forums/viewtopic.php?p=57674#p57674 #C http://conwaylife.com/wiki/2-engine_Cordership x = 761, y = 777, rule = B3/S23 2o$2o4$3o$o$bo9$11b3o$11bo$12bo8$13b2o$12b2o$14bo5$13b3o$13bo$14bo$31b 3o$31bo$32bo39$75b2o$74b2o$76bo2$80b2o$79b2o$81bo11$59b2o29b2o$58b2o 29b2o$60bo30bo11$99b2o$98b2o$100bo$113b2o$112b2o$114bo21$144b2o$119b2o 22b2o$118b2o25bo$120bo$113b2o$112b2o$114bo8$128b2o$127b2o$129bo3$117b 2o$116b2o$118bo24b2o$142b2o$144bo2$133b2o$132b2o$134bo7$155b2o$154b2o$ 156bo10$165b3o$165bo$166bo4$165b2o$164b2o$166bo8b2o$174b2o$176bo13$ 193b2o$192b2o$194bo2$196b3o$196bo$197bo8$209b3o$209bo$210bo4$217b3o$ 217bo$218bo2$207b3o$207bo$208bo23b3o$232bo$213b3o17bo$213bo$214bo$203b 2o$202b2o$204bo29b3o$234bo$224b3o8bo$224bo$225bo$236b2o$214b2o19b2o$ 213b2o22bo$215bo8$240b2o$230b2o7b2o$229b2o10bo$231bo11$228b2o$227b2o$ 229bo14$246b2o$245b2o$247bo36$266b3o$266bo$267bo8$279b3o$279bo$280bo5$ 294b3o$294bo$295bo3$291b2o$290b2o$292bo21$319b3o$319bo$320bo9$313b3o$ 313bo$314bo14b3o$329bo$330bo3$320b3o$320bo$321bo2$338b3o$338bo$339bo5$ 353b3o$353bo$354bo9$378b2o$377b2o$365b3o11bo$365bo$366bo8$380b3o$380bo $381bo5$374b3o$374bo$375bo2$392b3o$369b2o21bo$368b2o23bo$370bo6$384b2o $383b2o$385bo7$376b2o$375b2o$377bo$413b2o$412b2o$414bo$417b3o$417bo$ 418bo2$414b2o$413b2o$415bo3$470b2o$393b2o74b2o$392b2o77bo$394bo5$427b 3o$427bo$428bo3$479b2o$438b2o38b2o$437b2o41bo$439bo2$442b2o$441b2o$ 443bo3$495b2o$490b2o2b2o$489b2o5bo$491bo10$517b2o$516b2o$518bo13$512b 3o$512bo$513bo3$434b3o93b2o$434bo94b2o4b2o$435bo95bo2b2o$536bo4$507b3o $507bo$508bo3$502b2o$501b2o$503bo5$463b2o$462b2o52b3o$464bo51bo$517bo 9$528b3o$528bo$529bo$521b2o$483b3o34b2o$483bo38bo$484bo3$488b2o$487b2o $489bo44b2o$482b2o49b2o10b2o6b3o$481b2o52bo8b2o7bo$483bo62bo7bo8$498b 2o$497b2o$499bo7b2o$506b2o$508bo48b3o$557bo7b3o$558bo6bo$566bo2$572b2o $571b2o$573bo2$519b2o$518b2o66b3o$520bo56b2o7bo$530b2o44b2o9bo$529b2o 47bo$531bo2$579b3o$579bo26b2o$580bo24b2o$607bo5$605b3o$605bo$554b2o50b o$553b2o$555bo6$618b3o$618bo$619bo6$621b3o$621bo$622bo$629b3o$629bo$ 567b2o61bo$566b2o$568bo55b3o$624bo$625bo3$566b2o$565b2o$567bo2$645b3o$ 645bo$646bo3b3o$650bo$651bo12$670b3o$670bo$671bo125$758b2o$758bobo$ 758bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME 6 THUMBNAIL THUMBSIZE 2 AUTOSTART X -375 Y -375 ZOOM 6 GRID OFF CELLBORDERS LOOP 5000 ]] #C [[ PAUSE 2 LINEAR ZOOM WIDTH 600 HEIGHT 600 ]] #C [[ T 500 ]] #C [[ T 1000 X -200 Y -200 Z -1 STEP 5 ]] #C [[ T 3000 X -350 Y -350 Z 4 LINEAR ZOOM ]] #C [[ T 3200 X -380 Y -380 Z 8 LINEAR ZOOM ]] #C [[ T 4000 X -425 Y -425 ]]
Slow salvo construction of a one-glider seed
(click above to open LifeViewer)
RLE: here Plaintext: here

Uses

David Bell built a log(t) growth from four 2-engine Corderships,[13] and a 4-engine Cordership rake from two adjacent 2-engine Corderships,[14] both on January 3rd, 2018. 2718281828, Dave Greene and Chris Cain posted glider syntheses for this rake on January 7th, allowing for the construction of breeders.[15][16][17]

Bell further built two different period-96 c/12 forward rakes, one using the 4-engine rake, along with the 2-engine Cordership and an older 3-engine block puffer,[18] the other using a new Cordership boat and block puffer, two 2-engine Corderships, and a sideways rake, both on January 6th, 2018.[18] He also built a different Cordership made from a two-engine boat puffer and a 2-engine Cordership that contains a glider which can escape if the boat is deleted by a sideways or forward glider.[18]

Chris Cain updated the infinite glider hotel to use the 2-engine Cordership on January 3rd, 2018.[19]

Entity Valkyrie built an 714 × 501 2-engine Cordership gun on January 6, 2018, using Luka Okanishi's 9-glider synthesis;[20] BlinkerSpawn noted that this gun could be compacted to 385 × 253 using the quadri-Snark.[21] Dave Greene built an unrelated period-556 2-engine Cordership gun on January 7.[22][23] Entity Valkyrie built a different gun using a boat keeper reaction on January 10.[24] On August 29 that year, Nathaniel Johnston completed a stable glider to 2-engine Cordership converter,[25] which converts an input glider to a 2-engine Cordership at repeat time 556 ticks, thus allowing for arbitrary high-period guns to be built. The following is an improved design by Dave Greene:

x = 561, y = 544, rule = B3/S23 296bobo$296b2o$297bo77$313b2o$313bobo$315bo4b2o$311b4ob2o2bo2bo$311bo 2bobobobob2o$314bobobobo$315b2obobo$319bo2$305b2o$306bo7b2o$306bobo5b 2o$307b2o7$317b2o$317bo$318b3o$320bo12$301b2o$301bobo$303bo4b2o$299b4o b2o2bo2bo$299bo2bobobobob2o$302bobobobo$303b2obobo$307bo2$293b2o$294bo 7b2o$294bobo5b2o$295b2o7$285b2o18b2o$286bo18bo$284bo21b3o$284b5o14b3o 2bo$289bo13bo2bo$286b3o12bobo2b2o$257b2o26bo15b2o$258bo26b4o$256bo26b 2o3bo3b2o$256b5o14b2o5bo2b3o4b2o$261bo13bo6b2obo$258b3o12bobo9bo$257bo 15b2o10b2o$163b2o11bo80b4o$163b2o10bobo77b2o3bo3b2o$175bobo2b2o3bo68bo 2b3o4b2o27b2o$174b2ob2o2bo2bobo12bo49bo4b2obo36bo$178bobo3bobo10b3o47b 3o7bo33b3o$174b2obo2b4obo10bo26bo22bo10b2o32bo$174b2obobo3bo12b2o25b3o 20b2o$178bobo3bo41bo73b2o$179bobo3bo39b2o38b2o33bo$180bo3b2o80bo31bobo $206bo49bo6b3o28b2o2b2o$206b3o47b3o4bo30b2o$209bo49bo44bo$171b2o35b2o 11b2o35b2o11b2o29b3o$171b2o48b2o48b2o28bo$156b2o143b2o$155bo2bo$154bob 2o$154bo$153b2o$168b2o$168bo135b2o$169b3o24b2o48b2o56b2o$171bo11b2o11b 2o35b2o11b2o34b2o$184bo49bo46bobo$181b3o47b3o47bo$181bo49bo48b2o$292b 2o$200b2o47b2o38bo3bo$201bo15b2o6b2o21bobo16b2o6b2o5b2o5b4o$198b3o15bo 2bo5b2o21bo17bo2bo5b2o5bobo$112bo85bo17bo2bo27b2o17bo2bo14bo4b2o$110b 3o104b2o48b2o11b4ob2o2bo2bo$109bo80bo89bo2bobobobob2o$108bobo79b3o90bo bobobo58b2o$108bobo82bo90b2obobo58bo$109bo82b2o43bo50bo61bo$237b3o90b 2o14b5o$240bo33b2o52bo2bo13bo$184b2o53b2o34bo7b2o43b2obobo12b3o$184bo 90bobo5b2o45bob2o15bo$93b2o86b2obo91b2o52bo15b4o$93b2o86bo2b3o4b2o38b 2o95b3o10b2o3bo3b2o$125b2o55b2o3bo3b2o38bo95bo13b2o4b3o2bo$126bo57b4o 40b2obo95b2o20bob2o2b2o$124bo59bo15b2o26bo2b3o4b2o109bo5bobo$113b2o9b 5o14b2o40b3o12bobo26b2o3bo3b2o108b2o7bo4b2o$113bobo13bo13bo44bo13bo28b 4o118b4ob2o2bo2bo$115bo10b3o12bobo39b5o14b2o27bo15b2o17b2o18b2o65bo2bo bobobob2o$106b2o7b2o8bo15b2o40bo48b3o12bobo17bo18bo53b2o14bobobobo$ 106b2o17b4o56bo49bo13bo15bo21b3o50bo16b2obobo$123b2o3bo3b2o50b2o44b5o 14b2o14b5o14b3o2bo27b2o22b3o17bo$96bob2o22bo2b3o4b2o96bo39bo13bo2bo28b obo5b2o17bo$94b3ob2o22b2obo106bo34b3o12bobo2b2o27bo7b2o21b2o$93bo31bo 105b2o33bo15b2o31b2o31bo7b2o$94b3ob2o25b2o90bo48b4o78bobo5b2o$96b2o2bo 114b3o46b2o3bo3b2o54bo19b2o$99bobo55bo56bo48bo2b3o4b2o50b2obobo$95bob 2obobo16bo13b2o20b3o56b2o47b2obo57bobobobo$95b2obo2bo15b3o14bo19bo111b o54bo2bobobobob2o$98bo17bo14b3o20b2o110b2o53b4ob2o2bo2bo$98b2o16b2o13b o5b2o83b2o101bo4b2o$96b2o2bobo19bo15bo84bo72b2o25bobo$95bo2bo2b2o17b3o 15bobo82bob2o47b2o20bo26b2o34b2o$96b2o21bo19b2o74b2o4b3o2bo48bo22bo60b o$119b2o94b2o3bo3b2o46b3o3b2o14b5o61b3o$220b4o48bo6bo13bo68bo$206b2o 15bo55bobo12b3o$159b2o44bobo12b3o57b2o15bo$159bobo43bo13bo74b4o$161bo 42b2o14b5o64b2o3bo3b2o$122b2o37b2o61bo64b2o4b3o2bo$103b2o17b2o98bo52bo 21bob2o$103b2o117b2o49b3o21bo$272bo23b2o35bo$172b2o98b2o57b3o$102b2o 47b2o18bobo156bo$103bo47b2o2b2o8b2o4bo116b2o40b2o$100b3o12b2o38bobo5bo 2bo2b2ob4o112bo$100bo14bo41bo5b2obobobobo2bo113b3o$66b2o48b3o38b2o7bob obobo118bo$65bobo50bo47bobob2o$59b2o4bo101bo94b2o29b2o$57bo2bo2b2ob4o 191bobo5b2o22bobo$57b2obobobobo2bo110b2o79bo7b2o24bo4b2o18b2o$60bobobo bo104b2o7bo79b2o29b4ob2o2bo2bo15bobo5b2o$60bobob2o105b2o5bobo110bo2bob obobob2o15bo7b2o$61bo116b2o94bo19bobobobo17b2o$270b2obobo19b2obobo$74b 2o193bobobobo23bo32bo$65b2o7bo105bo85bo2bobobobob2o49b2obobo$65b2o5bob o105b3o83b4ob2o2bo2bo6b2o40bobobobo$72b2o109bo86bo4b2o9bo7b2o28bo2bobo bobob2o$182b2o84bobo15bobo5b2o28b4ob2o2bo2bo$168b2o98b2o17b2o39bo4b2o$ 169bo156bobo$166b3o157b2o$166bo$221b2o$62b2o157bo$63bo128b2o25bobo$60b 3o75bo46b2o5bobo15b2o7b2o76b2o$60bo77b3o44b2o7bo15bobo84bo$141bo52b2o 15b2o85b3o$140b2o21b2o3b2o37b2o91bo$163b2o2bob3o9bo24bobo$167bo4bo7bob ob2o20bo$132b2o29b4ob2o2bo7bobobobo18b2o$132bo30bo2bobobob2o3b2obobobo bo2bo20b2o$129b2obo33bobobobo4bo2bo2b2ob4o20b2o$89bo39bo2b3o4b2o26b2ob obo6b2o4bo$89b3o38b2o3bo3b2o30bo13bobo98b2o$92bo39b4o50b2o98bobo$91b2o 39bo15b2o7b2o129bo4b2o$133b3o12bobo7bo7b2o116b4ob2o2bo2bo$136bo13bo7bo bo5b2o38bo77bo2bobobobob2o$131b5o14b2o7b2o45b3o78bobobobo$130bo2bo63bo 11bo78b2obobo$130b2o65b3o8b2o82bo$158bo41bo$101b2o53b3o28bo11b2o22b2o 53b2o$94b2o5bobo51bo29b3o35bobob2o50bo7b2o$94b2o7bo51b2o27bo40bobo51bo bo5b2o$103b2o64b2o13b2o38b2o2bo51b2o$169bo56b2o$19bo70bo79b3o51b2o2b3o $17b3o69bobob2o78bo51bobo2bo$16bo72bobobobo74b2o2bo44b2o4bo2b2o$15bobo 68b2obobobobo2bo70bo2b2o45bobo2b2o$15bobo68bo2bo2b2ob4o46b2o22b2o16b2o 32bo32bo$16bo71b2o4bo49bobo5b2o33b2o23b2o7b2o29b3o35b2o$94bobo47bo7b2o 58bo38bo38bo$95b2o46b2o68b3o35b2o38b3o$215bo70b2o5b3o$157bo38bo3b2o84b obo7bo$2o151b2obobo36bobo3bo86bo4b3o$2o150bobobobo35bobo3bo83b4ob2o2bo $149bo2bobobobob2o28b2obobo3bo84bo2bobobobo$149b4ob2o2bo2bo28b2obo2b4o bo85bobobobob2o$153bo4b2o34bobo3bobo38b2o45b2obobob2o$20b2o129bobo36b 2ob2o2bo2bobo37bobo5b2o42bo$20bobo128b2o38bobo2b2o3bo38bo7b2o$22bo156b 2o10bobo45b2o37b2o$13b2o7b2o155b2o11bo86bo7b2o$13b2o238bo25bobo5b2o$ 249b2obobo25b2o$3bob2o241bobobobo$b3ob2o238bo2bobobobob2o$o87bo49bo49b o56b4ob2o2bo2bo$b3ob2o79b3o47b3o47b3o60bo4b2o$3b2o2bo54bo22bo26bo22bo 26bo22bo26bo34bobo$6bobo53b3o20b2o25b3o20b2o25b3o20b2o25b3o32b2o$2bob 2obobo16bo38bo49bo49bo49bo23b2o49b2o$2b2obo2bo15b3o37b2o48b2o48b2o48b 2o23bo50bo$5bo17bo213bobo9bo41b3o$5b2o16b2o20bo49bo49bo49bo37b2o2b2o4b o3b3o43bo$3b2o2bobo19bo15b3o47b3o47b3o47b3o35b2o7bobobo$2bo2bo2b2o17b 3o18bo49bo49bo49bo42bo2bob4o$3b2o21bo20b2o11b2o35b2o11b2o35b2o11b2o35b 2o11b2o28bo3bo4bo$26b2o32b2o48b2o48b2o48b2o29b3obobo34b2o257bo$243bobo b2o33bobo256b3o$244bo39bo4b2o54bo198bo$280b4ob2o2bo2bo50b3o197bobo$ 280bo2bobobobob2o49bo200bobo$283bobobobo52b2o200bo$29b2o253b2obobo$10b 2o17b2o257bo$10b2o73b2o48b2o48b2o163b2o$72b2o11b2o35b2o11b2o35b2o11b2o 34b2o29b2o20b2o75bo$73bo49bo49bo46bobo29bobo20bo7b2o66bob2o204b2o$9b2o 59b3o47b3o4bo42b3o47bo33bo20bobo5b2o17bo40b2o4b3o2bo204b2o$10bo59bo49b o6b3o40bo48b2o24b2o7b2o20b2o22b3o40b2o3bo3b2o$7b3o12b2o51bo54bo114b2o 52bo48b4o$7bo14bo16b2o34b3o51b2o168b2o33b2o15bo$23b3o14bo15b2o6b2o12bo 254bobo12b3o188b2o$25bo11b3o15bo2bo5b2o11b2o31b2o48b2o48b2o121bo13bo 147bo42bobo$37bo17bo2bo51bo10b2o37bo49bo22b2o72b2o23b2o14b5o140b3o16bo 25bo$30bo25b2o53b3o7bo39b3o47b3o19b2o73bo43bo139bo19b3o22b2o7b2o$30b3o 36b2o42bo4b2obo41bo49bo72b2o20bob2o38bo141b2o21bo30b2o$33bo35bo48bo2b 3o4b2o156bo13b2o4b3o2bo38b2o162bobo$32b2o32b2obo49b2o3bo3b2o157b3o10b 2o3bo3b2o203bobo37b2obo$66bo2b3o4b2o43b4o164bo15b4o11bo179b2o13bo38b2o b3o$67b2o3bo3b2o43bo15b2o64bo85bob2o15bo11b3o178bo58bo$24b2o43b4o49b3o 12bobo63b3o81b2obobo12b3o15bo40b2o135bob2o49b2ob3o$24bo44bo15b2o38bo 13bo66bo80bo2bo13bo17b2o40bobo126b2o4b3o2bo48bo2b2o$21b2obo45b3o12bobo 32b5o14b2o64b2o82b2o14b5o56bo4b2o120b2o3bo3b2o48bobo$21bo2b3o4b2o40bo 13bo32bo188bo52b4ob2o2bo2bo123b4o28b2o2bo16bobob2obo$22b2o3bo3b2o35b5o 14b2o33bo184bo6b2o46bo2bobobobob2o109b2o15bo28b2o2b3o15bo2bob2o$24b4o 40bo52b2o74b2o108b2o5bo50bobobobo111bobo12b3o36bo17bo$24bo15b2o28bo 126bo113b2obo51b2obobo111bo13bo38b2o16b2o$25b3o12bobo26b2o123b2obo113b 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107bo$264b2o58bo3b2o126b2o$264bo58bobo3bo126b4o$266bo55bobo3bo127bob2o $246b2o14b5o51b2obobo3bo$247bo13bo56b2obo2b4obo127bo$247bobo12b3o57bob o3bobo125b2o$248b2o15bo52b2ob2o2bo2bobo125b3o$262b4o53bobo2b2o3bo69bo 58bo$257b2o3bo3b2o39b2o10bobo77b3o68b2o$257b2o4b3o2bo38b2o11bo81bo67b 2o$265bob2o132b2o$265bo123b2o$264b2o61bo43b2o17bo$327b3o42bo17bobo$ 330bo28bo11bo19b2o$256b2o71b2o28b3o9b2o40b2o$256bo105bo50b2o58bo$257b 3o89b2o10b2o109b2o$259bo90bo120bo3bo$308bo41bobo119b2o2bo$306b3o42b2o 124bo$305bo68b2o98bobo$305b2o67b2o34b2o63bo$290b2o118bo64bo$229bo61bo 119b3o61b2o$227b3o61bob2o118bo61b2o$226bo65bo2bo107b2o$226b2o65b2o108b 2o2b2o$308b2o97bobo40bo10bo$308b2o74b2o23bo39b5o5bob2o11bo$365b2o18bo 23b2o37bo10bo3bo9bo$365bo16b3o64b2o8b3obo9b2o$366b3o13bo67b2o9b2o12bo$ 317bo3b2o45bo68b2o13bo21b3o$216b2o98bobo3bo114b2o35b3o$215bobo5b2o90bo bo3bo22b2o$215bo7b2o86b2obobo3bo17b2o5bo$214b2o95b2obo2b4obo15bobob3o$ 315bobo3bobo7b2o7bobo$228bo82b2ob2o2bo2bobo7b2o7b2o$224b2obobo82bobo2b 2o3bo$223bobobobo70b2o10bobo130b2o$220bo2bobobobob2o67b2o11bo131b2o11b 2o$220b4ob2o2bo2bo223b2o2bo$224bo4b2o230bo3bo$222bobo230bo5bo3bo$222b 2o232bo2b2o3bobo$457b3o5bo$465bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM -1.5 GPS 60 STEP 6 Y 36 AUTOSTART LOOP 4146 HEIGHT 480 ]]
Converts an input glider to a 2-engine Cordership
(click above to open LifeViewer)
RLE: here Plaintext: here

Using a variant of the same script used to discover it, praosylen combined the 2-engine Cordership with an additional switch engine to obtain various puffers.[26]

Toward the end of 2018, Adam P. Goucher added a "0-degree" slow-salvo synthesis of a 2-engine Cordership to slmake, to allow more efficient long elbow pushes to be automatically compiled in self-constructing spaceship recipes.[27]

See also

Notes

  1. ↑ Its status as engineered is debated. In the sep_stdin census, which generated and simulated soups comprised of randomly-filled regions behind switch engine pairs at random displacements, with no human intervention, it is the only switch-engine-based spaceship to have occurred, and Oscar Cunningham found a 16 × 16 initial pattern from which it emerges using Logic Life Search[2] (later reduced to 15 × 15 and then 14 × 14 by b3s23love[3][4]), so its unnatural nature is only due to a lack of computing power.
    x = 16, y = 16, rule = B3/S23 o2bob2o$o3b2ob2o2bob2o$bo2bo4bo3bobo$10b4o$2b2obo3bobobo$o4b4o3bob2o$ 4b2o2b3o2bo$b2o2bo2bo6bo$4b2o2b2o3bobo$3o2b2o2b2o4bo$ob2ob2o2b2obo$o2b obo4b2obo$3ob2ob2o4b3o$o2bob2o2bo3bobo$3o4bo3b2ob2o$b2obo2b4obo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART THEME 6 ZOOM 16 THUMBNAIL GPS 20 THUMBSIZE 2 T 0 PAUSE 3 ZOOM 2 GPS 32 LOOP 500 ]]
    16x16 initial pattern which produces a 2-engine Cordership
    (click above to open LifeViewer)

References

  1. ↑ praosylen (December 31, 2017). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  2. ↑ Macbi (August 29, 2018). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. ↑ b3s23love (September 25, 2023). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  4. ↑ b3s23love (April 6, 2024). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  5. ↑ Dave Greene (February 19, 2018). Re: Pattern of the Year 2017 -- votes (discussion thread) at the ConwayLife.com forums
  6. ↑ 6.0 6.1 6.2 Dave Greene (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  7. ↑ gmc_nxtman (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  8. ↑ Dave Greene (December 31, 2017). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  9. ↑ Luka Okanishi (AbhpzTa) (December 31, 2017). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  10. ↑ vilc (March 21, 2024). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  11. ↑ Dave Greene (January 1, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  12. ↑ Dave Greene (March 10, 2018). Re: Thread For Synthesisable Spaceship Guns (discussion thread) at the ConwayLife.com forums
  13. ↑ David Bell (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  14. ↑ David Bell (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  15. ↑ 2718281828 (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  16. ↑ Dave Greene (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  17. ↑ Chris Cain (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  18. ↑ 18.0 18.1 18.2 David Bell (January 6, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  19. ↑ Chris Cain (January 3, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  20. ↑ Entity Valkyrie (January 6, 2018). Guns Discussion Thread (discussion thread) at the ConwayLife.com forums
  21. ↑ BlinkerSpawn (January 6, 2018). Re: Guns Discussion Thread (discussion thread) at the ConwayLife.com forums
  22. ↑ Dave Greene (January 7, 2018). Re: Guns Discussion Thread (discussion thread) at the ConwayLife.com forums
  23. ↑ Dave Greene (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  24. ↑ Entity Valkyrie (January 10, 2018). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  25. ↑ Nathaniel Johnston (August 29, 2018). Re: Stable Signal Converters (discussion thread) at the ConwayLife.com forums
  26. ↑ praosylen (January 7, 2018). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
  27. ↑ Adam P. Goucher (September 23, 2018). Re: Slow-salvo recipes (discussion thread) at the ConwayLife.com forums

External links

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