Difference between revisions of "X66"
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|viewerconfig = #C [[ TRACKLOOP 4 -1/2 0 THUMBSIZE 2 GPS 4 ]] | |viewerconfig = #C [[ TRACKLOOP 4 -1/2 0 THUMBSIZE 2 GPS 4 ]] | ||
|apgcode = xq4_0oorxroozdjio404oijd | |apgcode = xq4_0oorxroozdjio404oijd | ||
|eppsteinid = 10240 | |||
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'''x66''' is a [[period]] [[:Category:Spaceships with period 4|4]] [[spaceship]] with [[speed]] [[c/2 orthogonal|c/2]] that was found by [[:Category:Patterns found by Hartmut Holzwart|Hartmut Holzwart]] in July [[:Category:Patterns found in 1992|1992]]. One of the symmetric halves can alternatively be escorted by a [[heavyweight spaceship]]. Its name refers to the fact that every [[cell]] (alive or dead) has at most 6 live [[Moore neighbourhood|neighbours]] (in contrast to spaceships based on [[lightweight spaceship]]s, [[middleweight spaceship]]s, or heavyweight spaceships). In fact, this spaceship was found via a search with this restriction. From this follows that the spaceship is stable also in Life-like rules allowing birth or survival for a cell with 7 or 8 neighbors. | '''x66''' is a [[period]] [[:Category:Spaceships with period 4|4]] [[spaceship]] with [[speed]] [[c/2 orthogonal|c/2]] that was found by [[:Category:Patterns found by Hartmut Holzwart|Hartmut Holzwart]] in July [[:Category:Patterns found in 1992|1992]]. One of the symmetric halves can alternatively be escorted by a [[heavyweight spaceship]]. Its name refers to the fact that every [[cell]] (alive or dead) has at most 6 live [[Moore neighbourhood|neighbours]] (in contrast to spaceships based on [[lightweight spaceship]]s, [[middleweight spaceship]]s, or heavyweight spaceships). In fact, this spaceship was found via a search with this restriction. From this follows that the spaceship is stable also in Life-like rules allowing birth or survival for a cell with 7 or 8 neighbors. | ||
Revision as of 10:51, 17 July 2017
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| Pattern type | Spaceship | ||||||||
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| Number of cells | 34 | ||||||||
| Bounding box | 9 × 11 | ||||||||
| Direction | Orthogonal | ||||||||
| Period | 4 | ||||||||
| Mod | 4 | ||||||||
| Speed | c/2 | Unknown | ||||||||
| Heat | 31 | ||||||||
| Discovered by | Hartmut Holzwart | ||||||||
| Year of discovery | 1992 | ||||||||
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x66 is a period 4 spaceship with speed c/2 that was found by Hartmut Holzwart in July 1992. One of the symmetric halves can alternatively be escorted by a heavyweight spaceship. Its name refers to the fact that every cell (alive or dead) has at most 6 live neighbours (in contrast to spaceships based on lightweight spaceships, middleweight spaceships, or heavyweight spaceships). In fact, this spaceship was found via a search with this restriction. From this follows that the spaceship is stable also in Life-like rules allowing birth or survival for a cell with 7 or 8 neighbors.
x66 was first synthesized on January 11, 2015, requiring 166 gliders. After the emergence of this spaceship in a symmetrical soup on March 8, 2015,[1] this was drastically reduced to 13 gliders.
Half of x66 can be supported by a heavyweight spaceship. Since the heavyweight spaceship is glide symmetric, it can support two halves at once, or one half alongside a sidecar.
Image gallery
See also
References
- ↑ flipper77 (March 8, 2015). "Re: Soup search results". Retrieved on March 18, 2016.
External links
- x66 at the Life Lexicon
- Glider 10240 at David Eppstein's Glider Database
- x66 at Adam P. Goucher's Catagolue
- Patterns
- Spaceships with 34 cells
- Periodic objects with minimum population 34
- Patterns with 34 cells
- Patterns found by Hartmut Holzwart
- Patterns found in 1992
- Patterns that can be constructed with 13 gliders
- Spaceships
- Spaceships with period 4
- Orthogonal spaceships
- Spaceships with speed c/2
- Spaceships with heat 31
- Spaceships with mod 4