LifeWiki:Spaceship Search Status Page: Difference between revisions

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m (1,1)c/6 width-9 (gfind-pt)
m (2,0)c/8 width-8 (gfind)
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Revision as of 13:06, 21 December 2015

Known spaceships by width

Velocity Asymmetric Odd-symmetric Even-symmetric Gutter Odd glide-symmetric Even glide-symmetric
(1,0)c/2 21 21 28 21 - -
(1,0)c/3 12 15 12 17 - -
(1,0)c/4 10 13 16 17 - -
(1,1)c/4 3 - - - - -
(2,0)c/4 5 11 12 11 5 12
(1,0)c/5 11 19 18 19 - -
(1,1)c/5 13[1] - - - - -
(2,0)c/5 10 15 18 15 - -
(1,0)c/6 9 15 18 21 - -
(1,1)c/6 9 - - - - -
(2,0)c/6 11 17 12 19 17 14
(2,1)c/6 15[1] - - - - -
(3,0)c/6 14 21 28 21 - -
(1,0)c/7 10 13 14 15 - -
(1,1)c/7 8 - - - - -
(2,0)c/7 10[1] 17[1] 18 21[1] - -
(2,1)c/7 9[2] - - - - -
(3,0)c/7 13[3] 27[3] 26[3] 27[3] - -
(1,0)c/8 8[4] 13[5] 12 17[4] - -
(1,1)c/8 6 - - - - -
(2,0)c/8 8 11 14 15 13 14
(2,1)c/8 8 - - - - -
(2,2)c/8 8 - - - - -
(3,0)c/8 10[6] 19[2] 22[6] 19[2] - -
(3,1)c/8 11[2] - - - - -
(4,0)c/8 10 13 14 15 13 14
x = 978, y = 368, rule = B3/S23
39b3ob3o153b3ob3o189b3o2b4o2b3o200b3ob3o195b3o153b3o4b3o$38bo2bobo2bo
151bo2bobo2bo187bo3bob4obo3bo198bo2bobo2bo193bo2bo153bo2bo3bo2bo$37bo
3bobo3bo149bo3bobo3bo185bo6bo2bo6bo196bo3bobo3bo195bo153bo6bo$37bo9bo
149bo9bo185bo3b2o6b2o3bo196bo9bo195bo153bo6bo$39bo5bo153bo5bo189bo12bo
200bo5bo194bobo155bobo4bobo$36bobo7bobo147bobo7bobo183bobo14bobo194bob
o7bobo$35b2obob2ob2obob2o145b2obob2ob2obob2o181b2obob2o8b2obob2o192b2o
bob2ob2obob2o$34bobobo2bobo2bobobo143bobobo2bobo2bobobo179bobobob2o8b
2obobobo190bobobo2bobo2bobobo$33b2obo4bobo4bob2o141b2obo4bobo4bob2o
177b2o3bo2bo8bo2bo3b2o188b2obo4bobo4bob2o$32bo3bob2obobob2obo3bo139bo
3bob2obobob2obo3bo175bo3bobo2b2o6b2o2bobo3bo186bo3bob2obobob2obo3bo$
36bo4bobo4bo147bo4bobo4bo182bo20bo193bo4bobo4bo$32b2o3bo2bo3bo2bo3b2o
139b2o3bo2bo3bo2bo3b2o175b2o24b2o186b2o3bo2bo3bo2bo3b2o9$812bo$811bobo
$810bo3bo$811b3o2$809b2o3b2o$806b2o3bobo3b2o$806b2o3bobo3b2o$804b2o5bo
bo5b2o$808b2obobob2o$41b2o159bo198b2o202b3o9b3o184bo6bobo6bo$37b2obo2b
ob2o154bobo193b2obo2bob2o197bobob2o5b2obobo186b2o2bobo2b2o$37b2o6b2o
153bo3bo192b2o6b2o197bobobo7bobobo184bo2bobo3bobo2bo$37bobo4bobo154b3o
193bobo4bobo198bob2ob2ob2ob2obo185b2o11b2o$39b2o2b2o354b2o2b2o204bobob
obo189b2o11b2o$38b2ob2ob2o153b2o3b2o192b2ob2ob2o201bobobobobobo190bo7b
o$40bo2bo153bo3bobo3bo192bo2bo202b2obobobobob2o189b3o3b3o$38bo6bo150b
2o3bobo3b2o189bo6bo200b3o2bobo2b3o191bo3bo$38bo6bo149bo5bobo5bo188bo6b
o200b2o2bo3bo2b2o188b2obo3bob2o$196bob2obobob2obo396bo4b2ob2o4bo189b2o
3b2o$38b8o352b8o199bo13bo189bobobobo$37b2o6b2o350b2o6b2o$809bo2bo2bo$
810b2ob2o$809b2o3b2o$806b2obo5bob2o$806b2o3b3o3b2o$806bob9obo$810b2ob
2o$810bo3bo$808bo2bobo2bo$809bobobobo$811bobo$806bo3bo3bo3bo$805b3o2bo
bobo2b3o$804bo3bobo3bobo3bo$805bobo2bob2o2bo2bo$809b5o2b2o$812bo3bo$
813bobo$5b2o38bo29b3o122bo3bo33b3o3b3o151bo6bo31b3o4b3o162b3ob3o32b3o
3b3o155bobo$4b2o39bo29bo2bo121bo3bo32bo2bo3bo2bo150bo6bo30bo2bo4bo2bo
162bo3bo32bo2bo3bo2bo$6bo37bobo28bo123bobobobo34bo3bo152bobo4bobo32bo
4bo205bo3bo$75bo164bo3bo194bo4bo162b2o7b2o32bo3bo$43bo32bobo120bobobob
o31bobo5bobo188bobo6bobo159b5ob5o29bobo5bobo$41b3o157bobo194bo6bo198b
2o3bobobobo3b2o$40bo2bo154bobo3bobo190b3ob2ob3o198b4o2bobo2b4o$37b3o3b
o154bobo3bobo190b3ob2ob3o203bo3bo$40b3o155bo2b3o2bo189bo2bo4bo2bo$40b
2o2b2o350b2o3b2o3b2o201b2o3b2o$37bobo2bo3bo150b2o7b2o187b2obob4obob2o
197b3o7b3o$40b2o4bo150bo9bo190bobo2bobo200b2o9b2o$39bobob2o153bo7bo
190b3o4b3o202b2o3b2o$39bo157b2ob5ob2o190bo6bo204bo3bo$39b3o156bo2bobo
2bo188bobo8bobo200b2o3b2o$38bo2bo157bobobobo189bobo3b2o3bobo198bo2bo3b
o2bo$38bo2bo356b3o2b3o201bo2bo3bo2bo$200b2ob2o190bo4bo2bo4bo197bo11bo$
39b2ob2o156bo3bo190bo4bo2bo4bo199b2o5b2o$38bo2b3o155b2o3b2o190bo10bo$
39bo159b2o3b2o192b2o4b2o202b2o5b2o193bo3bo$41b2o356bob2obo204bo5bo194b
o3bo$38b2obob2o354b6o404bobobobo$41bo2bo353bo6bo203b2o3b2o$43b2o353bo
2b2o2bo403bobobobo$40bo2bo354bo6bo405bobo$42bo356b2o2b2o403bobo3bobo$
39b2o3bo354b2o2b2o403bobo3bobo$43b2o763bo2b3o2bo$41b2obo$807b2o7b2o$
43b3o761bo9bo$42b4o762bo7bo$41bo2bo762b2ob5ob2o$43bo764bo2bobo2bo$43bo
765bobobobo$40b2o$40b3o767b2ob2o$41bo768bo3bo$42bo766b2o3b2o$42b2o158b
o36bo5bo563b2o3b2o$202bo35b3o3b3o$43bo158bo34bo2bo3bo2bo561b2o3b2o$41b
2o155bo3bo3bo29b3o7b3o559bo2bobo2bo$195bobob2obob2obobo27bobo5bobo563b
obo$194b2obobob3obobob2o28b2o3b2o562bo2bobo2bo$193bo3bo9bo3bo23bo4bo3b
o4bo557b2ob2ob2ob2o$193bobobob2o3b2obobobo28bo3bo562b4obob4o$197b2obo
3bob2o27b2o3bo3bo3b2o561b3o$194b2obo9bob2o26bo2bo3bo2bo564bo$197b2o2bo
bo2b2o31bo5bo155b2o32bo12bo157bo11bo30bo5bo$197bobobobobobo193b2o31bob
o10bobo154b2obobo5bobob2o27b3o3b3o155bo$199bobobobo193bob2obo28b2ob2o
8b2ob2o156bob2o3b2obo29bo2bo3bo2bo153b4o$199bobobobo191b3o4b3o26b2o14b
2o153b2obo3bobo3bob2o25b3o7b3o150b2o3b2o$199bobobobo188b2o12b2o25bo12b
o155b3o2bobobobo2b3o26bobo5bobo151b2o3b2o$196b2obobobobob2o185b2o2bob
4obo2b2o25b4o6b4o160bobobobo33b2o3b2o152bob3o2bo$195bobobobobobobobo
188bobo2bobo29bo2b2o4b2o2bo157bo2bobobobo2bo26bo4bo3bo4bo147bo2b2o2bo$
196bo2bobobobo2bo227b2o2bo2bo2b2o159bobobobobobo32bo3bo153bo2bo2bo$
198bo2bobo2bo190b2o6b2o30b2ob4ob2o160b3obobob3o27b2o3bo3bo3b2o149b2o$
394b6o4b6o28bobo2bobo159bo2b3o3b3o2bo27bo2bo3bo2bo153bo$2b3o35bo38bo
314bobo10bobo29bo4bo165b2ob2o34bo5bo155bo2bo$bo37b5o34bobo117b3o3b3o
187bob2o8b2obo195b2o11b2o191bo$o5bo31bo3bobo32b2ob2o113bo3b2o3b2o3bo
184bob2o8b2obo28bo6bo159b2o11b2o191b2o$o5bo31bobobobo32bo2b2o112b3o4bo
bo4b3o182b2ob2o8b2ob2o25b2ob2o2b2ob2o158b3o7b3o192b2o$b2obo34b2ob2o32b
3o119bo2bobo2bo186b2obo10bob2o26bo8bo157b2o2bo7bo2b2o187bo7bo$3o2bob2o
31b3o31b2o4b2o115bobobobobobo186bobo10bobo27b2o6b2o157bobobo7bobobo
186b3o6bobo$bo5bo66b4o117bo5bobo5bo186bo2b2o2b2o2bo399bobo5bo2bo$8bo
31b3o29bo5b2o115bo5bobo5bo185bo4bo2bo4bo197bo11bo192b2o2b3o$b2o38bob2o
29b3obo117b5o3b5o192b2o202bobob2o3b2obobo186b2o4bo3bo$3o33b3o3b2o33bo
322bo2bo205b2o3b2o190b2o5b2o$o3b2o30b3o36bobo533bobo193bo2bo$3o34bob3o
31bobo320b4o4b4o198bobob2ob2obobo191bobo$2o7b2o28bo32bobo318b3o2b2ob2o
b2o2b3o197b2obobob2o$bo5bo3bo27b3o35bo317bo5b2o5bo200bobobobo$b2obob2o
2bo26bo38bobo314b2obob3o2b3obob2o194b3obobobobob3o$bo4bo29bo2bo35bo
319b3o3b2o3b3o195bo6bobo6bo$2bo4bo2bo25b7o32bo319bo12bo198bo3bobo3bo$
7bobo27bo2b3o33bobo318b2o2b2o2b2o203b2ob2o$6bob2o27bo5bo34b2o317b10o
197bo2b2o2bobo2b2o2bo$6bobo29bobob2o31b2ob2o317bob2o2b2obo197bo2bob2o
3b2obo2bo$7b2o35bo354bo4bo200b2o11b2o$8bo28b2o5bo29bo325bo2bo$8bo27bob
obob2obo28bobo321bobo2bobo199bobo9bobo$7bo29bo3bobo31bo321b2ob4ob2o
198bo2bo7bo2bo$8b2o35bo28b2o321b2ob4ob2o198bo3bo5bo3bo$40bo3bo29b2o
322bo6bo201bo2bo3bo2bo$38b3o35bo320b3o4b3o200b2o7b2o$38bo2b4o29b2o2b2o
315bobo8bobo$41bo36b2o314bo14bo197bob3ob3obo$38bo6bo32bo315b2ob2o6b2ob
2o195b2o2b3ob3o2b2o$38b3obo2bo196bo36b3ob3o111b2o6b2o198b2o2bo5bo2b2o$
40b2o3bo195bobo34bo2bobo2bo109b2ob6ob2o198b2o9b2o$41b3obo194bo3bo32bo
3bobo3bo106b2obo8bob2o196b3o7b3o$40bo4b2o194b3o33bo9bo110bo6bo199bob2o
b2ob2ob2obo$39b2o2b3o233bo5bo319b3o2b2ob2o2b3o$39b2o2bo195b2o3b2o30bob
o7bobo316bobo3bobo3bobo$39bo2bo193b2o3bobo3b2o26b2obob2ob2obob2o108b8o
202b3o3b3o$40bo195b2o3bobo3b2o25bobobo2bobo2bobobo107b2o4b2o201bob2o3b
2obo$42bo191b2o5bobo5b2o22b2obo4bobo4bob2o316b2o5b2o$42bobo193b2obobob
2o25bo3bob2obobob2obo3bo313b3o7b3o$42b3o189bo6bobo6bo25bob3o3b3obo317b
2o9b2o$40bobo194b2o2bobo2b2o24b2o3bo2b2ob2o2bo3b2o$40b3obo190bo2bobo3b
obo2bo26b2o9b2o321b2ob2o$37b2o2b2obo190b2o11b2o26bo11bo319bobo3bobo$
37b2ob2o193b2o11b2o25bobo9bobo316b4o5b4o$238bo7bo27bo15bo314bo3b2o3b2o
3bo$40bobo195b3o3b3o29bo11bo316bo3b2o3b2o3bo$39bob2o197bo3bo28b2obo11b
ob2o$38b3o196b2obo3bob2o24bo3b2o9b2o3bo313bo2bo5bo2bo$40bo198b2o3b2o
27bo2bo11bo2bo317bo5bo$38b2o2b2o195bobobobo32b2o5b2o321b2o5b2o$42b2o
231b2ob2o5b2ob2o317b2o7b2o$42b2o195bo2bo2bo29b4o7b4o316b2ob2o3b2ob2o$
240b2ob2o29b2o4b2ob2o4b2o318bobobobo$239b2o3b2o32bob2ob2obo317b2obo3bo
bo3bob2o$40b3o193b2obo5bob2o28b5ob5o318b2obobobobob2o$40b3o193b2o3b3o
3b2o28b2o7b2o321bo5bo$40b2o194bob9obo355bo2bo9bo2bo$40b2o198b2ob2o35b
2ob2o318bob4ob2ob2ob4obo$40b3o197bo3bo35bo3bo319b3o11b3o$36b2obo3b2o
193bo2bobo2bo32bo5bo112bo6bo79b3o2b4o2b3o108bo9bo$36b2obo3b2o194bobobo
bo34bo3bo112bobo4bobo77bo3bob4obo3bo$39bo201bobo153bobo4bobo76bo6bo2bo
6bo104b2o11b2o$39bo2bo198bobo154bo6bo77bo3b2o6b2o3bo103bo15bo$39bo2bo
197b2ob2o240bo12bo106bo2bo7bo2bo$39bob2o354b3o4b3o75bobo14bobo107bo5bo
$39b2o356b4o2b4o74b2obob2o8b2obob2o103bobo7bobo$400bo2bo76bobobobo10bo
bobobo$397b3ob2ob3o72b2o3bobob2o4b2obobo3b2o102bo9bo$44bo352b2o6b2o71b
o3bobobob2o4b2obobobo3bo99bo2bo7bo2bo$40bobo353b2o8b2o73bo4bobobo2bobo
bo4bo102bo2bo7bo2bo$38b2obobob2o431b2o6bo2bo4bo2bo6b2o101bo9bo$39bobob
obo349bo12bo78b3o4b3o$40b2ob2o348bo2bo10bo2bo194b2o11b2o$39bo5bo347bo
2bo10bo2bo79b4o112bo11bo$38bobo3bobo444b2o112bobo9bobo$42bo353b3o6b3o
196bobo11bobo$42bo353bo10bo196b4o9b4o$39b2o3bo353bo6bo197b2ob3o7b3ob2o
$39b2o355b3o6b3o198bo2bo5bo2bo$38b3o2b2o562b2o7b2o$37b2ob2o357bob2obo
202b3o5b3o$37bo5bo356bo2bo204bobo3bobo$396bob2ob2ob2obo199b2ob2ob2ob2o
$37bo7b2o349b3o6b3o200bobo3bobo$37b2ob4obo$39bob4o351bobo6bobo196b2o
13b2o$43bobo350bobo6bobo196b3o11b3o$44bo349b3ob3o2b3ob3o194bo2b2o7b2o
2bo$606bo3bo3bo3bo$609b3ob3o$604bo2bobobobobobo2bo$604b3o11b3o$604bo
15bo$605b3o9b3o$605b3o9b3o$606b3o7b3o$609b2o3b2o$605b2o11b2o$605bo3bob
obobo3bo$604bo2b2o7b2o2bo$607b2o2bobo2b2o$608bob2ob2obo2$609b2o3b2o$
608bo2bobo2bo$607bobobobobobo$604b4obobobobob4o$603bo4bo2bobo2bo4bo$
604bobo4bobo4bobo$435bo12bo157b3o7b3o$435bo12bo159bob2ob2obo$434bobo
10bobo154bo4b2o3b2o4bo$435bo12bo154b2o4bo5bo4b2o$435bo12bo154b2o15b2o$
436bo3b4o3bo156bo2b2o2bobo2b2o2bo$440b4o163b4o3b4o$436b4o4b4o160b2o5b
2o$610bo3bo$438bo6bo160b2obo5bob2o$439b2o2b2o160bobo2bo3bo2bobo$606b2o
b2o3b2ob2o2$606bob3o3b3obo$606b2o9b2o$606bo11bo2$604b3o11b3o2$605b6o3b
6o$44bo560b2obo2bobo2bob2o$43bobo560bobo2bobo2bobo$42bo2bo560bobobo3bo
bobo$43b2o561bo2bo5bo2bo$606bo2b2o3b2o2bo$39bo5bo564bo3bo$38bobo3bo
560bo5bobo5bo$37bo2bo3b2o559b2o2bobobobo2b2o$37bo2b2o3bo562b2obobob2o$
609bobobobo$610bo3bo$610b2ob2o$608bobo3bobo$609bo5bo$610bo3bo$609b3ob
3o$607b3obobob3o$607bobobobobobo$608bo2bobo2bo$608bo2bobo2bo$607b3obob
ob3o$606bo4bobo4bo$607bo3bobo3bo$608bo7bo$605bobo9bobo$606b2o9b2o$604b
o15bo$605bo2bo7bo2bo$607bobo5bobo$608bo7bo2$604b3o11b3o$606b3o7b3o$
606bo2bo5bo2bo2$606bo11bo$606bobo7bobo$607b3o5b3o$608b2o5b2o$608bobo3b
obo$609bo5bo20$604b2o13b2o25bob3o3b3obo30b3ob3o$606bobo7bobo26b2ob2obo
bob2ob2o28bo2bobo2bo$603bo3bob2o3b2obo3bo22bo2b2o2bobo2b2o2bo26bo3bobo
3bo$604b5o7b5o27bo2bobo2bo30bo9bo$644bo4bobobobo4bo28bo5bo$643b2o2bobo
bobobobo2b2o24bobo7bobo$604bobo11bobo22b2o6bobo6b2o23b2obob2ob2obob2o$
604bo3bobo3bobo3bo23bobo3b2ob2o3bobo23bobobo2bobo2bobobo$604bo3b3o3b3o
3bo24b2o2bobobobo2b2o23b2obo4bobo4bob2o$610bo3bo29b2o2b2obobob2o2b2o
21bo3bob2obobob2obo3bo$607bobo5bobo33bobo32bob3o3b3obo$609bo5bo29bo5bo
bo5bo22b2o3bo2b2ob2o2bo3b2o$610b2ob2o29bobo3b2ob2o3bobo25b2o9b2o$611bo
bo35bobobobo30bo11bo$608b2obobob2o27bo3b2obobob2o3bo24bobo9bobo$607bo
3bobo3bo26bobo4bobo4bobo23bo15bo$604b2o5bobo5b2o25bo4bobo4bo27bo11bo$
603bobo5bobo5bobo21b2o6bobo6b2o21b2obo11bob2o$604b2o2b2obobob2o2b2o26b
3obobob3o24bo3b2o9b2o3bo$604bo3b2obobob2o3bo24bo4b2ob2o4bo23bo2bo11bo
2bo$604b2o5bobo5b2o22b2o6bobo6b2o26b2o5b2o$604bo15bo22bobo2b2obobob2o
2bobo23b2ob2o5b2ob2o$605bo4bo3bo4bo31bobo31b4o7b4o$610bo3bo32b2o2bobo
2b2o26b2o4b2ob2o4b2o$610b2ob2o31b2o2bo3bo2b2o29bob2ob2obo$650b2ob2o32b
5ob5o$608b2o5b2o29b2o9b2o28b2o7b2o$608b2o5b2o29b2o9b2o$606bo11bo26bobo
9bobo30b2ob2o$606bobo7bobo25bo15bo29bo3bo$606bobo7bobo25bo15bo28bo5bo$
644bo15bo29bo3bo$605bobob2o3b2obobo26b3o7b3o$606b3ob2ob2ob3o30bo5bo$
607bob3ob3obo29bobo5bobo$606b2o9b2o30b2o3b2o$607b5ob5o30bob2ob2obo$
604bob3o2bobo2b3obo26bo3bobo3bo$604b3o3b2ob2o3b3o26bo2bo3bo2bo$606bo2b
2o3b2o2bo$607b2o7b2o31b2o3b2o$648bo2bobo2bo$608b2obobob2o34bobo$607bo
3bobo3bo30b2obobob2o$608b2obobob2o31b2obobob2o$606bobob2ob2obobo28b2o
2bobo2b2o$605bo3bo5bo3bo29bo5bo$606b2o9b2o$608bo7bo$606bo11bo$604b2o
13b2o$604bo2bo9bo2bo$603bo17bo$604bo4b2o3b2o4bo$606b2ob2o3b2ob2o$610b
2ob2o2$609b3ob3o!

Known spaceships by height

Velocity minimum height
(1,0)c/2 8
(1,0)c/3 5
(1,0)c/4 8
(2,0)c/4 6
(1,0)c/5 8
(2,0)c/5 11
(1,0)c/6 9
(2,0)c/6 7
(3,0)c/6 9
(1,0)c/7 8
(2,0)c/7 8
(3,0)c/7 7

All results checked by Matthias Merzenich using WLS.

x = 65, y = 70, rule = B3/S23
6bo17bo$5b3o15b3o$3b2ob3o13b3ob2o$4bo2bob2o4bo4b2obo2bo$b2obo4bobob2ob
2obobo4bob2o$b2obobo2bobo7bobo2bobob2o$bo8b3obobob3o8bo$2o7b2o9b2o7b2o
13$15bo$8b2ob3ob3o$8b2o4bo2b2ob2o$7bo2bob2o3bo2b2o$19bo2bo16$3bo53bo$
3bo7b3o11b3o28b3o$2bobo4b2o5b3o36b2obo$9b5ob5o4bo2bo27b3o$7bobo2bo2bo
3bo5bo30b2o$3b6o3bo2b2o4b6o$4b2o6bobo2b2o3bo$14bo6bo13$11bo7bo33bo$5b
2obobob2o3b2obobob2o26b3o$2b3obob3o9b3obob3o22bo3bo$2bo3bobo5bobo5bobo
3bo22b2ob2o5bo$6b2o6bobo6b2o36b2o$3b2o9bobo9b2o22b4obo5bob2o$3b2ob2o
15b2ob2o23bo2bo2b3o2bo$7bo15bo33b3o$61bo$61bob2o!

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Tim Coe (December 18, 2015). "Re: 3c/7 othogonal and 2c/9 diagonal spaceships". Retrieved on December 18, 2015.
  2. ↑ 2.0 2.1 2.2 2.3 Checked with knight2.c
  3. ↑ 3.0 3.1 3.2 3.3 Checked by Paul Tooke with gfind
  4. ↑ 4.0 4.1 Tanner Jacobi (December 16, 2015). "Re: 3c/7 othogonal and 2c/9 diagonal spaceships". Retrieved on December 17, 2015.
  5. ↑ "wildmyron" (December 21, 2015). "Re: 3c/7 othogonal and 2c/9 diagonal spaceships". Retrieved on December 21, 2015.
  6. ↑ 6.0 6.1 Tanner Jacobi (December 4, 2015). "Re: 3c/7 othogonal and 2c/9 diagonal spaceships". Retrieved on December 4, 2015.