Sudotrail.

Crack the grid.

Sudoku solutions. Every move explained.

Your puzzle

Practice techniques

Puzzle difficulty
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Enter a puzzle

Type 1–9 for clues; 0, space or another character skips a blank.

Import a Sudoku photo

Choose a clear photo of a printed puzzle. Your image stays in this browser.

A straight, well-lit photo works best. Handwriting and pencil notes may need corrections.