Pause for Puzzles: Sudoku for Mindfulness
Frank Longo
Sudoku Puzzles for a Road Trip
Sudoku Puzzles for the Weekend
Sit & Solve Simple Sudoku
Sit & Solve Tough Sudoku
Blockbuster Book of Sudoku
The Peaceful Mind Book of Sudoku
Way Beyond Black Belt Sudoku®
Sudoku Puzzles for Vacation
Puzzlewright Guide to Solving Sudoku
Frank Longo, Peter Gordon