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how to answer sudoku fast def isValidSudoku(board): def is_valid(board, row, col, num): for i in range(9): if board[row][i] == num or board[i][col] == num: return False if board[3 * (row // 3) + i // 3][3 * (col // 3) + i % 3] == num: return False return True for i in range(9): for j in range(9): if board[i][j] != '.': if not is_valid(board, i, j, board[i][j]): return False return True Step 2: Test the function with a sample Sudoku grid. rules of sudoku game X-Wing and Swordfish : These are advanced strategies that involve looking for patterns in two rows or columns where a certain number is missing, and only those rows or columns can fit that number. The name "Sudoku" is derived from the Japanese words "su" (number) and "doku" (single), which essentially means "single number." The game involves filling a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contain all of the digits from 1 to 9. killer sudoku medium These techniques involve marking potential candidates on the grid and eliminating possibilities based on logical deductions. conceptis sudoku answers today The objective is to fill the grid with numbers from 1 to 9, ensuring that each row, column, and block contains all the digits without repetition. rules of sudoku game
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