Difference between revisions of "Almost knightship"
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'''Almost knightship''' is a partial [[spaceship]] discovered by [[Eugene Langvagen]] on March 23, {{year|2004}}. It would have been an elementary [[knightship]] if two cells at the back end were not incorrect after the 6th generation, | '''Almost knightship''' is a [[partial]] [[spaceship]] discovered by [[Eugene Langvagen]] on March 23, {{year|2004}}.{{citation needed}} It would have been an elementary [[knightship]] if two cells at the back end were not incorrect after the 6th generation, which provided evidence that small elementary knightships may exist within a considerably small bounding box. | ||
Several more small almost knightships were found by [[Tomas Rokicki]] in February {{year|2018}}, using a SAT solver,<ref name="thread3272" /> of velocities (2,1)c/6 and (2,1)c/7. Further searching by [[Adam P. Goucher]] based on these partials led to the finding of a true elementary knightship, [[Sir Robin]]. | Several more small almost knightships were found by [[Tomas Rokicki]] in February {{year|2018}}, using a SAT solver,<ref name="thread3272" /> of velocities (2,1)c/6 and (2,1)c/7. Further searching by [[Adam P. Goucher]] based on these partials led to the finding of a true elementary knightship, [[Sir Robin]]. | ||
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|[[Image:AlmostKnightship.png|framed|left|generation 0 (left) and generation 6 (right) show that the pattern is different by only two cells]] | |[[Image:AlmostKnightship.png|framed|left|generation 0 (left) and generation 6 (right) show that the pattern is different by only two cells]] | ||
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==See also== | ==See also== | ||
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==External links== | ==External links== | ||
{{LinkLexicon|lex_a.htm#almostknightship}} | {{LinkLexicon|lex_a.htm#almostknightship}} | ||
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Revision as of 07:44, 25 March 2020
| Almost knightship | |||||||
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| Pattern type | Miscellaneous | ||||||
|---|---|---|---|---|---|---|---|
| Number of cells | 67 | ||||||
| Bounding box | 13 × 19 | ||||||
| Discovered by | Eugene Langvagen | ||||||
| Year of discovery | 2004 | ||||||
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Almost knightship is a partial spaceship discovered by Eugene Langvagen on March 23, 2004.[citation needed] It would have been an elementary knightship if two cells at the back end were not incorrect after the 6th generation, which provided evidence that small elementary knightships may exist within a considerably small bounding box.
Several more small almost knightships were found by Tomas Rokicki in February 2018, using a SAT solver,[1] of velocities (2,1)c/6 and (2,1)c/7. Further searching by Adam P. Goucher based on these partials led to the finding of a true elementary knightship, Sir Robin.
Image gallery
 generation 0 (left) and generation 6 (right) show that the pattern is different by only two cells |
See also
References
- ↑ Tomas Rokicki (February 14, 2018). Four new almost-knightships CGOL (discussion thread) at the ConwayLife.com forums
External links
- Almost knightship at the Life Lexicon