board.GetLayout()
board.IsInsideBoard(lx, ly, lz)
board.IsEmpty(lx, ly, lz)
board.xyz2uid(lx, ly, lz)
board.xy2zHash(lx, ly)
board.xy2zCnt(lx, ly)
board.lz2uid(uid, lz)
board.GetNeighborLX(lx, ly, dir, is_wrap_mode)
board.GetNeighborLY(lx, ly, dir, is_wrap_mode)
board.dir2uid(uid, dir, tz, is_wrap_mode)
board.uid2xyz(uid)
board.uid2inst(uid, ignored_chess_check)
board.CreateChess(objtype, lx, ly, lz, layer)