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Diagonal Sudoku strategies

Plain-English guides to the techniques that solve Diagonal Sudoku puzzles without guessing. Start at the top and work down.

Naked and hidden singles

The two moves that solve most Easy and Medium puzzles.

Pointing pairs and box–line reduction

When a number in a box is stuck on one line, it rules that number out of the rest of the line.

How to play Diagonal Sudoku · Play Diagonal Sudoku