Yeah, PEXT only works on 64-bit numbers (and therefore, the 8x8 chess board / 64-bit "bitboard", with 1-bit per position). EDIT: Both PEXT and Magic Bitboards

Yeah, PEXT only works on 64-bit numbers (and therefore, the 8x8 chess board / 64-bit "bitboard", with 1-bit per position). EDIT: Both PEXT and Magic Bitboards have a "Setup" phase that is run once. But there's also a separate phase that is run on every single position in the actual chess-board part.