Sudoku Solver Guide

    Learn advanced techniques for solving NYT Sudoku puzzles

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    How Sudoku Works

    Sudoku is a logic-based number puzzle. Fill the 9x9 grid so that each row, column, and 3x3 box contains all digits from 1 to 9.

    Basic Rules:

    • Each row must contain digits 1-9 with no repetition
    • Each column must contain digits 1-9 with no repetition
    • Each 3x3 box must contain digits 1-9 with no repetition
    • Some cells are pre-filled (given) - these cannot be changed

    Common Solving Techniques:

    Naked Single (Easy)

    When only one number can fit in a cell based on row, column, and box constraints.

    Hidden Single (Easy)

    When a number can only go in one cell within a row, column, or box.

    Pointing Pairs (Medium)

    When candidates in a box are aligned, they eliminate candidates in that row/column.

    X-Wing (Hard)

    A pattern where candidates form a rectangle, allowing elimination of other candidates.

    More NYT puzzle help