Book excerpt: 15 reasons your kids should play Sudoku: Significantly improves memory Improves abstract reasoning Improves data memorizing ability Teaches patience & focus Promotes logical thinking Teaches decision-making skills Reduces kids screen time Teaches attention to detail Mobile-friendly Makes learning fun Occupies and entertains simultaneously Creates a healthy competition Arguably, boost IQ levels Teaches rational thinking & problem-solving Provides an opportunity for family quality time ★★★★★★★★★★ 300 puzzles 3 difficulty levels 8.5" x 11" 4 x 4 grid 4 puzzles per page 4 sudoku answers per page 8 bonus coloring pages