Hardest Sudoku

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SE grade 4.2 Sudoku

4.2SE grade · 25 clues

By The Hardest Sudoku Team · Last updated

Givens only — solution not shown.

About this puzzle

An SE grade 4.2 Sudoku with 25 clues — intermediate, where pairs and locked candidates start to matter.

The SE grade is the canonical difficulty number from Sudoku Explainer — read how it works on the SE grade page.

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