✅ 150 Very Hard Sudoku Puzzles – For solvers seeking a challenging puzzle experience. ✅ Large Print for Easy Reading – Big, bold numbers and a clean layout, perfect for all ages. ✅ One Puzzle Per Page – Stay focused with a single puzzle on every page. ✅ Generous 8.5" x 11" Size – Large pages provide plenty of space for comfortable solving. ✅ Perfect for Brain Exercise – Keep your mind sharp and focused with mentally stimulating puzzles. ✅ Solutions Included – All puzzle answers are included at the back of the book for easy reference.