|View static image|
|Number of cells||3|
|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.
- Pre-block at the Life Lexicon