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kokopu

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A JavaScript/TypeScript library implementing the chess game rules and providing tools to read/write the standard chess file formats.

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Event = {Game with long & short comments and variations 2.} [start] -+<LONG {I'm the main variation header (short) comment.} [1w] (1w) e4 (#hm=0) {I'm a long comment with sub-variation siblings.}<LONG | [1w-v0-start] +---+ [1w-v0-1w] | (1w) d4 (#hm=0) [1w-v0-1b] | (1b) d5 (#hm=0) | [1b] (1b) e5 (#hm=0) [2w] (2w) Nf3 (#hm=1) | [2w-v0-start] +---+<LONG [2w-v0-2w] | (2w) Nc3 (#hm=1) {I'm a long comment at the end of a variation.}<LONG | [2b] (2b) Nc6 (#hm=2) [3w] (3w) Bc4 (#hm=3) | [3w-v0-start] +---+<LONG [3w-v0-3w] | (3w) Bb5 (#hm=3) [3w-v0-3b] | (3b) a6 (#hm=0) | [3w-v1-start] +---+ [3w-v1-3w] | (3w) d4 (#hm=0) | [3b] (3b) Bc5 (#hm=4) | [3b-v0-start] +---+<LONG {I'm a long comment at the beginning of a variation.}<LONG [3b-v0-3b] | (3b) d6 (#hm=0) | +---+---+---+---+---+---+---+---+ | r | | b | q | k | | n | r | +---+---+---+---+---+---+---+---+ | p | p | p | p | | p | p | p | +---+---+---+---+---+---+---+---+ | | | n | | | | | | +---+---+---+---+---+---+---+---+ | | | b | | p | | | | +---+---+---+---+---+---+---+---+ | | | B | | P | | | | +---+---+---+---+---+---+---+---+ | | | | | | N | | | +---+---+---+---+---+---+---+---+ | P | P | P | P | | P | P | P | +---+---+---+---+---+---+---+---+ | R | N | B | Q | K | | | R | +---+---+---+---+---+---+---+---+ w KQkq - {Line}{6 plies}