Difference between revisions of "T-tetromino"

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'''T-tetromino''' is one of 5 [[Polyomino#Tetrominoes|tetrominoes]]. It is a common [[predecessor]] of the [[traffic light]], and when paired with another T-tetromino it can become a predecessor of the [[pulsar]].
 
'''T-tetromino''' is one of 5 [[Polyomino#Tetrominoes|tetrominoes]]. It is a common [[predecessor]] of the [[traffic light]], and when paired with another T-tetromino it can become a predecessor of the [[pulsar]].
  
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In a cylindrical grid with a width of 6, the T-tetromino is always a [[replicator]].  It copies itself on the 15th and 40th generations of every 40 generations.  However, because it leaves behind [[block]]s, [[blinker]]s, and [[spark]]s, it does cleanly replicate itself until after 200 generations.  It acts much the same way as the replicator in [[Highlife]] because the two copies of the T-tetromino appear offset in opposite directions of the original.  Also, two replicators will destroy each other if they are next to each other.  The T-tetromino replicates orthogonally and 35 cells away from the original.
 
==See also==
 
==See also==
 
*[[Pre-pulsar]]
 
*[[Pre-pulsar]]

Revision as of 00:02, 22 October 2011

T-tetromino
x = 3, y = 2, rule = B3/S23 3o$bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Pattern type Miscellaneous
Number of cells 4
Bounding box 3×2
Discovered by John Conway
Year of discovery 1970

T-tetromino is one of 5 tetrominoes. It is a common predecessor of the traffic light, and when paired with another T-tetromino it can become a predecessor of the pulsar.

In a cylindrical grid with a width of 6, the T-tetromino is always a replicator. It copies itself on the 15th and 40th generations of every 40 generations. However, because it leaves behind blocks, blinkers, and sparks, it does cleanly replicate itself until after 200 generations. It acts much the same way as the replicator in Highlife because the two copies of the T-tetromino appear offset in opposite directions of the original. Also, two replicators will destroy each other if they are next to each other. The T-tetromino replicates orthogonally and 35 cells away from the original.

See also

External links