7-in-a-row Cordership

7-in-a-row Cordership
95bo18b$78b3o8bo5bo18b$77bo3bo6bo7bo17b$78b2o9b4o2b2o17b$80b2ob2o9b3o 17b$82b2o11bobo16b$96bo7b2o8b$96bo7b2o8b3$88bo25b$87bobo24b$87bobo24b$ 74b3o11bo25b$75bo36b2o$75bo2bo33b2o$75bo2bo35b$76bobo35b$96bo17b$95bob o16b$95bobo16b$96bo17b2$75b2o37b$53bobo18b2o38b$52bo19b3o39b$53bo2bo 57b$55bobo14b2o40b$58bo55b$57b3o54b$57bo56b$39bo15b2o57b$39bo5b3o9bo 13b3o40b$38bobo3b2o2bo6bo2bo12b3o40b$39bo3bo5bo5bobo13b2o41b$39bo3bo 11bo14bo21b3o19b$44bo2b2o19b2o2bo21bo19b$45b2o22bo3bo19bo20b$69bo2bo 41b$70b3o41b5$55b2o57b$55b2o57b$42b2o70b$42b2o70b$41b2obo69b$28bobo13b o69b$27bo16b2ob3o64b$28bo2bo12bob2obo64b$30bobo9b2o3b2o14b2o49b$33bo8b 2o19b2o49b$32b3o4bob3o9b2o59b$32bo6bo13b2o59b$30b2o82b$32bo81b$30bo2bo 80b$30bobo81b$30bo83b2$54bobo57b$54bo2bo56b2$22b3o30bobo56b$23bo31b3o 56b$23bo2bo29bobo55b$23bo2bo30b2obo53b$24bobo31b3o53b2$48bo65b$48bobo 63b$48b2o64b2$23b2o89b3$b3o8b2o100b$o3bo6bo2bo99b$b2o9b2o100b$3b2ob2o 106b$5b2o107b4$20b2o92b$19bo2bo91b$20b2o92b6$26b2o86b$7b2o15bo3bob2o 82b$7b2o15bo3bob2o82b$24bo3b2o84b$25b3o86b$25b3o86b4$15b2o15bo81b$15b 2o15bobo79b$32b2o80b6$23b2o89b$23b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKBOX -1/12 -1/12 -1/12 -1/12 THUMBSIZE 2 GPS 18 ZOOM 3 WIDTH 480 HEIGHT 480 ]]
View static image
Pattern type	Spaceship
Family	Cordership
Number of cells	289
Bounding box	114 × 113
Direction	Diagonal
Period	96
Mod	48
Speed	c/12 | 8c/96
Heat	258.3
Discovered by	Dean Hickerson
Year of discovery	1998
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1 Isotropic rules B3/S23 only
Glider synthesis Fewest gliders 25† Catagolue-generated RLE synthesis Uploaded synthesis RLE 7inarowcordership_synth.rle †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext 7inarowcordership.cells RLE 7inarowcordership.rle
Identifiers apgcode xq96_yzyy4e1msgzyzyzw167y8cczyzyzciczyzyzy5gyb33zyzyl8s0soyd343y3oggy8oozyzy7sy4gy461yk49dq052zyzy826ik465c12yu321y186czyso8ozyshh9ogy5cgmgogkgb5zyr27d0877y78kgeyegcozylsy4gyfoozym26ik465c12y433yc11259p0cgzyzy9ooya11zyvgoggzy9g0gy3g0ogy04a1951dc72zgo4ogy31303r4y1321z0106ruzw8gy28kk8zw2jjgyo8okz0324447y72552zy2ggzy211zyacc

The 7-in-a-row Cordership is a diagonal spaceship that was discovered by Dean Hickerson on July 23, 1998. It is one of the Corderships with a known glider synthesis and shares many properties with the 6-in-a-row Cordership.

Synthesis and destruction

A 48-glider synthesis for the 7-in-a-row Cordership has been known since June 2003, consisting of a 21-glider salvo meeting a 27-glider salvo. At that time a gun was constructed that fires 7-in-a-row Corderships; it is known as the V gun due to its shape.

Due to Luka Okanishi's discovery of a three-glider switch engine synthesis in 2017, the 7-in-a-row Cordership can now be constructed with only 25 gliders.

This Cordership can also be eaten, as shown by the pattern below that was created on July 4, 2003, based on a glider-extraction reaction found by Karel Suhajda which might be considered a Cordership Heisenburp, since the Cordership passes by the tub catalyst without being permanently affected. The Cordership eater consists of seven eater 2s and two tubs to do the majority of the eating, along with some Herschel tracks that produce gliders to clean up some blocks that are left behind.

x = 420, y = 428, rule = B3/S23 250bo$90b2o157bobo$90b2o158bo3$244b2o$244b2o23b2o$236b2o31bo$237bo29bo bo$98b2o137bobo27b2o$98b2o138b2o4b2o$244b2o2$76bo201b2o$76b2o23bobo 132b2o40bo$75bobo10bo11bo3bo131bo39bobo$86bo2bo9bo5bo132bob2o34b2o$84b 2o13b3o4bo130b2ob2o$84b2o14bob2obo152b2o$84b2o151b2ob2o16b2o$86bob2obo 146bobo$88b3o147bobo$88b2o149bo3$93b2o$92bo2bo$93b2o2$100bo$100bo164b 2o$105b3o145bo11b2o$106bo144b3o$92bo5bo6b3o119bo22bo$87bobobobo4b4o4b 5o104bo11b3o20b2o$88bo3bo4bo3b4ob2o105b3o14bo34b2o$76b2ob2o7b2o8bo4b2o 92bo14bo16b2o34b2o$79b2o7bobo15b2o89b3o12b2o$76b2ob2o7bo2bo108bo58b2o$ 78b3o7b2ob2o106b2o59bo$72b3o4b2o179bobo$79b2o8bo3bo167b2o$64bo8b2o14bo 3bo106b2o$64b2o23bo3bo106b2o17b2o$63b3o24b3o126b2o$58bobo2bo$58bobob2o $58b3o2$286b2o$52b2o162b2o32b2o34bo$52b2o162bo20b2o11b2o35b3o$218bo19b o50bo$217b2o16b3o$78bo134b2o20bo42b2o$79bo133bo64b2o$69bo10bo133b3o$ 68b3o11b2o132bo$60b2o6bo2bo3bo6b3o$60b2o9b2o2b3o7bo$50b2o19bo4b9o$50b 2o18bo6b7o113b2o$69b2o8b3o114bobo$68bobo125bo25b2o$68bo4bo121b2o25bo 50b2o$68bob2obo129b2o15bobo50bo$71b2obo128b2o15b2o52b3o$72bo203bo$58b 2o12b2o$58b2o12b2o$72bo$27bo43bobo$25b2o45bo$26b2o4$69b3o145b2o2b2ob2o $69bo3bo128b2o13bobo2bobo$53bo16b2obo127bobo16b2o3bo$54bo146bo19bob2o$ 44bo10bo15b3o126b2o16bo2bobo$43b3o11b2o12b3o143bobobobo$43bo2bo3bo6b3o 158b2ob2o$46b2o2b3o7bo$40bo5bo4b9o$35bobobobo3bo6b7o$36bo3bo13b3o$36b 2o$36bobo$36bo2bo172b2o$36b2ob2o171b2o$18bo$17bobo17bo3bo$17bobo17bo3b o$18bo18bo3bo$38b3o$201b2o$b2o199bo19b2o$b2o199bobo17bo$26bo176b2o15bo bo$25bobo187bo4b2o$25bobo186bobo$26bo187bobo$203b2o10bo$202bobo$9b2o 12bo178bo$9b2o12bo176bobo$28b3o168bobo14b2o158b2o$29bo170bo15bo159b2o$ 21bo6b3o186b3o161bo$21b4o4b5o185bo159b3o$20bo3b4ob2o347bo$21bo4b2o350b 2o$29b2o325b2o$356b2o6$368b2o$368b2o$382b2o$382b2o$386b2o$386b2o5$364b 2o38b2o6bo$363bo2bo33bobo2bo4b3o$364bobo31b3ob2o5bo$365bo31bo11b2o$ 398b3ob2o$400bob2o3$408b2o3b2o$408b2o3b2o4$418bo$417bobo$418bo$356bo$ 356b3o$359bo$358bobo$359bo2$400b2o$360b2o19bo18b2o$360b2o17b3o$378bo$ 378b2o3$383b2o3b2o$383b2o3b2o$410b2o$410bo$411b3o$413bo3$354b2o$353bob o$353bo$352b2o49b2o$403bo$364b2o38b3o$364b2o40bo7$369b2o$368bobo$368bo $367b2o19$64bo$62b3o$36b2o23bo$37bo23b2o$37bobo68bo$38b2o2b2o37bo25bob o$42b2o35b3o15bo10bo$78bo18b3o5b3o$65b2o11b2o20bo3bo$65b2o32b2o3b2o8$ 36b2o52b2o$35bobo16b2o34b2o$35bo18bobo45b2o$34b2o20bo44bo2bo$50b2o4b2o 44b2o4b2o$50bo2bo23b2o3bo25bobo$52b2o23bo3bobo26bo$43b2o33bo3b2o26b2o$ 43b2o20b2o12bo20b2o$66bo10bob5o17bo$63b3o11b2o4bo14b3o$63bo16b3o15bo$ 77b2obo$77bobo2$33b2o$34bo$34bobo$35b2o2$332bo$331bobo$332bo$53b2o$7bo 6b2o37bo$7b3o4bo2bobo31bobo$10bo5b2ob3o29b2o$9b2o11bo$16b2ob3o$16b2obo 3$5b2o3b2o$5b2o3b2o4$bo$obo30b2o15b2o$bo30bobo15b2o$32bo$31b2o303b2o$ 336bo$337b3o$339bo2$18b2o296b2o$18b2o18bo277bo$38b3o276b3o$41bo277bo$ 40b2o3$30b2o3b2o$30b2o3b2o$8b2o$9bo$6b3o$6bo3$64b2o$64bobo$66bo$15b2o 49b2o235b2o$16bo286bobo$13b3o38b2o249bo$13bo40b2o249b2o7$49b2o$49bobo$ 51bo$51b2o2$297b2o$297bo$298b3o$300bo9$284b2o$284bo$285b3o$287bo10$ 266b2o$266bobo$268bo$268b2o12$241bo$240bobo$241bo3$261b2o$261bobo$263b o$263b2o13$171bo$169b3o$168bo$168b2o$114b2o31b2o$114b2o32bo$148bobo$ 149bobo$150bo3b2o$154b2o2$132bo$131bobo39b2o$131bo2bo38b2o$132b2o$184b o$121b2o59b3o$121b2o58bo$181b2o6$108b2o$108b2o$112b2o42b2o$111bobo41bo bo$111bo43bo$110b2o42b2o$123b2o$123b2o35b2o$160b2o2$125b2o$125b2o$160b 2o$160b2o8$134bo$133bobo$133bobo$132b2ob2o16b2o$153b2o$132b2ob2o$133bo b2o34b2o$131bo39bobo$131b2o40bo$173b2o2$139b2o$133b2o4b2o$132bobo27b2o $132bo29bobo$131b2o31bo$139b2o23b2o$139b2o3$145bo$144bobo$145bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 WIDTH 800 HEIGHT 600 ZOOM 1.2 ]]

7-in-a-row Cordership eater (click above to open LifeViewer) RLE: here Plaintext: here

A much more compact eater, or an equally compact Cordership-to-glider converter, can now be constructed thanks to the subsequent discovery of the Snark reflector and the syringe.

See also

• Cordership variants (category)

External links

• 7-in-a-row Cordership at Adam P. Goucher's Catagolue (extended)