This collection covers two kinds of logical thinking: classic 9x9 Sudoku grids, and IQ-style puzzles like matrix reasoning, 3D cube counting, code mazes, and picture analogies. They're built for children roughly ages 7 to 12 who are ready to hold several steps of logic in mind at once, not just spot a single pattern.
Not sure where to begin? The Sudoku guide below walks through starting with easier grids, scanning rows and columns for the only possible number before ever guessing, and when a child is ready to move up to harder puzzles. The maze and focus guide covers a related skill — sustained attention — and how to raise difficulty as your child's patience for multi-step problems grows.