Su doku for dummies
by Andrew Heron

Popularity 3
Master all types of sudoku challenges, including extreme puzzles such as killer and jigsaw. Includes strategies required to solve the puzzles and solutions.
Magic squaresMathematical recreationsSudoku
by Andrew Heron

Master all types of sudoku challenges, including extreme puzzles such as killer and jigsaw. Includes strategies required to solve the puzzles and solutions.