Pre-block

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.

Pre-block
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Pattern type Miscellaneous
Number of cells 3
Bounding box 2×2
Discovered by John Conway
Year of discovery 1970

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
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