Halloween Sudoku is a picture sudoku for kids, with smiling pumpkins, bats, ghosts and moons instead of numbers. Put one of each in every row, column and box, starting with small 4 by 4 grids that suit five-year-olds. Owls and cats join in on the bigger 6 by 6 boards. Play through pumpkin patches, autumn woods and lantern gardens at dusk, and win a new board for every stage. Every puzzle has exactly one answer, found by thinking, never by guessing.