(board, white: bool)
| 79 | |
| 80 | |
| 81 | def _king(board, white: bool): |
| 82 | k = "K" if white else "k" |
| 83 | for r in range(8): |
| 84 | for c in range(8): |
| 85 | if board[r][c] == k: |
| 86 | return (r, c) |
| 87 | return None |
| 88 | |
| 89 | |
| 90 | def _reaches(board, piece, fr, fc, tr, tc, ep) -> bool: |