Difference between revisions of "Pre-block"

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{{Pattern|name=Pre-block|pname=preblock|bx=2|by=2|c=3|life105=true|life106=true|plaintext=true|rle=true}}
{{Pattern
'''Pre-block,''' a tromino, is a common [[parent]] of the [[block]]. Given its compactness and distinctive form, it is a recognizable component of many other patterns, such as [[boat]], [[ship]] or [[snake]]; a mirrored pair comprise one phase of a [[beacon]]. Even ordinary language lacks a short equivalent for its name.  
|name         = Pre-block
|pname       = preblock
|c            = 3
|bx           = 2
|by           = 2
|discoverer  = John Conway
|discoveryear = 1970
|rulemin      = B3/S23
|rulemax      = B345678/S012345678
|rulespecial  = [[Conway's Game of Life|Conway Life]]
|isorulemin  = B3a/S2ae3a
|isorulemax  = B2-a345678/S012345678
|synthesis    = 2
|synthesisRLE = true
|plaintext   = true
|rle         = true
}}
'''Pre-block''' (or '''latent block'''), a [[triomino]], is a common [[parent]] of the [[block]]. Given its compactness and distinctive form, it is a recognizable component of many other patterns, such as [[boat]], [[ship]], [[aircraft carrier]], [[block and glider]] or [[snake]]; a mirrored pair comprise one phase of a [[beacon]].
 
The pre-block is similar to the [[tub]], [[boat]], [[beehive]] and such in the sense that it can be augmented with items like tails, as in [[eater 1]] and [[integral sign]].


==See also==
==See also==
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==External links==
==External links==
[http://www.argentum.freeserve.co.uk/lex_p.htm#preblock Pre-block] at the Life Lexicon
{{LinkLexicon|lex_p.htm#preblock}}
 
{{Symmetry|diagonal2}}

Revision as of 01:36, 3 December 2020

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

Pre-block (or latent block), a triomino, is a common parent of the block. Given its compactness and distinctive form, it is a recognizable component of many other patterns, such as boat, ship, aircraft carrier, block and glider or snake; a mirrored pair comprise one phase of a beacon.

The pre-block is similar to the tub, boat, beehive and such in the sense that it can be augmented with items like tails, as in eater 1 and integral sign.

See also

External links