Zen - Sudoku Hard 1

Improve your memory.......Stimulate your mind.......Increase your concentration.......Keep your brain healthy.......Get a sense of achievement.......Find your calm.......Relax and enjoy......Escape and have fun100 all new hard level puzzles with solutionsOne puzzle per page and Large Print - easy on the eyesLarge grid - plenty of room to write in optionsMandala on each page for calmness and coloringPocket size - small enough to carry around to be ready when the need strikesElegant cover - looks good enough to take anywhere Good quality paper- allows for erasing over and over