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Whether you are a beginner or a seasoned solver, nytimes.com has puzzles that will challenge and entertain you. sudoku problem solving techniques Apply the X-Wing and Swordfish techniques: Once you have filled in the easy clues and eliminated numbers, you can use advanced techniques like X-Wing and Swordfish to find more numbers. sudoku puzzle bookdifferent types of sudoku games if __name__ == "__main__": board = [ ["5", "3", ".", ".", "7", ".", ".", ".", "."], ["6", ".", ".", "1", "9", "5", ".", ".", "."], [".", "9", "8", ".", ".", ".", ".", "6", "."], ["8", ".", ".", ".", "6", ".", ".", ".", "3"], ["4", ".", ".", "8", ".", "3", ".", ".", "1"], [".", "6", ".", ".", ".", "7", "9", ".", "."], [".", ".", "7", ".", ".", ".", ".", "2", "4"], [".", "2", "1", ".", "9", ".", ".", ".", "5"], [".", ".", ".", "8", ".", ".", ".", "7", "9"] ] print(isValidSudoku(board)) Output: True Conclusion: Valid Sudoku is a popular problem on LeetCode that tests your ability to solve puzzles using algorithmic thinking. Utilize other Sudoku techniques: Combine hidden pairs with other techniques like X-Wing, Swordfish, and XY-Wing to solve more challenging puzzles. sudoku skyscraper technique These strategies involve identifying pairs or triples of numbers that can be eliminated in rows or columns. beginner sudoku puzzle
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