Hardest Sudoku

Public puzzle

SE grade 10.0 Sudoku

10.0SE grade · 18 clues

By The Hardest Sudoku Team · Last updated

Givens only — solution not shown.

About this puzzle

An SE grade 10.0 Sudoku with 18 clues — monster territory, with no easy entry point.

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

Play this difficulty →