35P4H1V1

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35P4H1V1
x = 16, y = 13, rule = B3/S23 11b2o$11bobo$11bo$14bo$13bobo$13bobo$5b3o5bo$5bo7bo$2o6b2o3bo$obo3bo6b o$o5b2o4bo$3bo4b3o$3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 4 -1/4 -1/4 THUMBSIZE 2 GPS 4 ]]
Pattern type Tagalong
Spaceship
Number of cells 35
Bounding box 17 × 14
Direction Diagonal
Period 4 (mod: 4)
Speed c/4 | c/4
Heat 35.0
Kinetic symmetry n
Discovered by Hartmut Holzwart
Year of discovery 2004

35P4H1V1 is a c/4 diagonal spaceship discovered by Hartmut Holzwart in September 2004. Among all known c/4 diagonal spaceships it is the tenth smallest. It consists of two gliders pulling a tagalong behind them.

Unlike many smaller c/4 diagonal spaceships, it is completely time- and space-asymmetric. There are only four c/4 diagonal spaceships smaller than it with this property, namely B29 and the three different ways in which a glider can follow a B29. It is the smallest fully asymmetric tagalong for two gliders.

Glider synthesis

35P4H1V1 was first synthesized in 41 gliders by KtT on July 24, 2025, based on a final step by Goldtiger997.[1][2] At the time, it was the smallest known unsynthesised spaceship.

See also

References

  1. KtT (July 24, 2025). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
  2. shinjuku (#10799068048) (July 24, 2025). Job triggered by Adam P. Goucher at GitLab Catagolue project.