This is pretty standard ( or at least used to be 20 years ago ) in high performance chess programming, see https://www.chessprogramming.org/Bitboards https://w

This is pretty standard ( or at least used to be 20 years ago ) in high performance chess programming, see https://www.chessprogramming.org/Bitboards https://www.chessprogramming.org/Bitboards https://healeycodes.com/visualizing-chess-bitboards https://healeycodes.com/visualizing-chess-bitboards