Sudoku very difficult - 75 puzzles for experts - puzzle book incl. explanation and solution is a challenging puzzle book for fans of very difficult sudoku’s. This edition contains 75 expert-level sudoku’s, supplemented with explanations and a complete solution.
This puzzle book incl. is designed for experienced puzzlers who want to test and improve their skills. The book is clearly structured and suitable for independent use as relaxation or training.
- Subtitle: Puzzle book incl. explanation and solution
- Print: 1
- Format: paperback