Hard to Extreme Sudoku – 300 Challenging Puzzles – Volume 1: Hard, Very Hard and Extremely Hard Puzzles for Sudoku Experts

Hard to Extreme Sudoku PuzzlesPlaying Sudoku is addictive, and you can never have enough puzzles. When you become a skilled player, you may want more challenging puzzles.In this book, we have: 100 hard puzzles, 100 very hard puzzles and 100 extreme puzzles.Each page has four puzzles, and all the puzzles are well-crafted and easy to read.Add to cart now.