650+ Sudoku Classic Puzzles
Medium to Hard · 660 puzzles
Tip: for more room on the screen, add the app to your Home Screen: tap Share, then Add to Home Screen.
Which puzzle do you want explained?
Choose the chapter and type the puzzle number from the book.
How it works
- The puzzle opens as printed in the book.
- Press Next: every move is explained, one at a time.
- Colored cells show what the explanation talks about.