gchess

-record(game, {
    board :: board:board_bb(),
    turn :: color:color(),
    history :: list(move:move()),
    status :: game:status(),
    ply :: integer(),
    white_king_castle :: boolean(),
    white_queen_castle :: boolean(),
    black_king_castle :: boolean(),
    black_queen_castle :: boolean(),
    en_passant :: gleam@option:option(position:position())
}).