Hard Sudoku #186423 | Peak Sudoku

Play Now

Beginner Gentle Easy Medium Tricky Hard Tough Expert Extreme Diabolical

Make a BookFREE Make a Sudoku Import Text/Image

Learn Techniques

81 leftNo cell selected

Puzzle: #186423
Difficulty: Hard(57/100)SE 3.6
Clues: 30
Symmetry: 180° rotational

1–9 writes into the selected cells.

Techniques in this puzzle4

Naked Single×11 Hidden Single×2 Pointing Pair×1 Naked Triple×1

© 2026 Peak Sudoku·Contact·PrivacyFree to play. No ads.

Hard Sudoku #186423 | Peak Sudoku