Martial Arts Sudoku® Level 8: Red Belt Sudoku™ (Martial Arts Puzzles Series)

Sudoku fever is on! Which book in the Martial Arts Sudoku series will provide the perfect challenge for you? The skill level recooommended to solve these puzzles is ranked in the same way as Japanese karate levels—by different colored belts. Warning: Only the best sudoku puzzlers should try the Red Belt collection.