A small static shape in the game of life, found commonly in the wild. The block is both volatile and regenerative, making it a particularly interesting shape as far as its involvement with other cells. Any cell within 2 units of it, other than directly along a diagonal, can produce a reaction from the block, and any cell adjacent to the block (such as the result of such reaction) kills adjacent cells within the block, but a lone block with one corner missing regenerates that corner in the next generation. See beacon. Useful for growing herbs in ADOM.

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