Unnamed tagalong 23P4H2V0
Unnamed tagalong 23P4H2V0 | |||||||||
View static image | |||||||||
Pattern type | Tagalong Spaceship | ||||||||
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Number of cells | 32 | ||||||||
Bounding box | 12 × 16 | ||||||||
Direction | Orthogonal | ||||||||
Period | 4 (mod: 4) | ||||||||
Speed | c/2 | 2c/4 | ||||||||
Heat | 28.5 | ||||||||
Kinetic symmetry | n | ||||||||
Discovered by | Hartmut Holzwart | ||||||||
Year of discovery | 2020 | ||||||||
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This small, unnamed tagalong was discovered on the 8th of December 2020 by Hartmut Holzwart.[1] It can be attached to any XWSS. The version to the right is this tagalong attached to a lightweight spaceship, resulting in a spaceship with a minimum population of 32. It can also be attached to a heavyweight spaceship in the same manner, as well as to a middleweight spaceship in two different ways, or to itself. One standard spaceship can support two of these tagalongs.
The 32-cell version supported by a lightweight spaceship was the smallest known spaceship with no known glider synthesis[2][3] until Entity Valkyrie found a recipe for it on February 1, 2025.[4] The "MWSS top" variant is currently among the smallest remaining spaceships with no known synthesis.
Image | Cells | Supporting spaceship apgcode |
Synth. cost |
---|---|---|---|
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32 | LWSS xq4_17ojhc6ojszy79ghu |
39 |
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34 | MWSS back xq4_ra24sz8ajlszy1aghgis |
41 |
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34 | MWSS top xq4_g808wsjo6chjo71zf8841 |
No synthesis known |
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36 | HWSS xq4_ra24sz8ajlszy1aghhgis |
41 |
References
- ↑ Hartmut Holzwart (December 8, 2020). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Matthias Merzenich (January 25, 2021). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Connor Steppie (December 11, 2022). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Entity Valkyrie (February 1, 2025). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- Patterns
- Spaceships with 32 cells
- Periodic objects with minimum population 32
- Patterns with 32 cells
- Patterns found by Hartmut Holzwart
- Patterns found in 2020
- Spaceships
- Tagalongs
- Spaceships with period 4
- Orthogonal spaceships
- Spaceships with speed c/2
- Spaceships with unsimplified speed 2c/4
- Spaceships with heat 28
- Spaceships with mod 4
- Spaceships with n symmetry
- Unnamed periodic objects