Star Battle is a growingly popular logic puzzle that, like sudoku, is simple to understand but offers a great deal of complexity and variety. In Star Battle, a 10x10 grid is divided into 10 irregular regions of different sizes. Each row, column, and region contain exactly two stars—and no stars in the grid may touch each other, even diagonally. This book contains a whopping 300 Star Battle puzzles, including short sections with one-star puzzles (as a warmup) and three-star puzzles (for an extra challenge). Author Jim Bumgardner also provides a helpful how-to-solve introduction, explaining the rules and some of the basic solving strategies.