Nonmonotonic spaceship 1
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Nonmonotonic spaceship 1  
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Pattern type  Spaceship  

Number of cells  66  
Bounding box  21 × 11  
Direction  Orthogonal  
Period  4  
Mod  4  
Speed  c/4  c/4  
Heat  67.5  
Discovered by  Hartmut Holzwart  
Year of discovery  1992  
 
 

Nonmonotonic spaceship 1 is a c/4 orthogonal spaceship that was found by Hartmut Holzwart in August 1992. It was the first orthogonal nonmonotonic spaceship to be discovered.
Other c/4 nonmonotonic spaceship
In Keith Amling's Period4 xWSS agar ship, another such spaceship is used for stabilisation, that acts more like a p4 pipsquirter, albeit still receding a single cell (as is the maximum amount a c/4 orthogonal spaceship can recede), but receding to a singlecell front row instead of three adjacent (so its frontend displaces by (1,0,1,1) across the period instead of (1,1,0,1)).
(click above to open LifeViewer) Catagolue: here 
See also
External links
 Nonmonotonic at the Life Lexicon
 66P4H1V0.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
 Patterns
 Spaceships with 66 cells
 Periodic objects with minimum population 66
 Patterns with 66 cells
 Patterns found by Hartmut Holzwart
 Patterns found in 1992
 Spaceships
 Spaceships with period 4
 Orthogonal spaceships
 Spaceships with speed c/4
 Spaceships with unsimplified speed c/4
 Spaceships with heat 67
 Spaceships with mod 4
 Nonmonotonic spaceships
 Patterns with bilateral orthogonal symmetry