Stimulate brain with the most famous logic based number game: SUDOKU Difficult and extremely hard level puzzles are great for advanced and for anyone who loves Sudoku.
- 4 large puzzles on each page Large print on white paper is very simple to read.
- Every puzzle has a solution.
- 8.5 11 inch pages
- Lots of Sudoku puzzles: 400 Sudoku
- 100 hard Sudoku
- 100 very hard Sudoku
- 100 extremely hard Sudoku
- Answers for every Sudoku included in back
Relax and enjoy completing all such 400 fun puzzles game to stay active and have pleasure!