Sudoku Triathlon Challenge - Prijzen

Will Shortz Presents Extreme Sudoku

So you think you're tough enough? This collection of puzzles was created for only bravest sudoku solvers. Many may attempt to master them but only the sharpest minds will succeed. So put your sudoku s...

Easy Afternoon Sudoku

Features 100 easy sudoku puzzles. This work is edited by the New York Times crossword editor. It contains big grids with more space for easy solving.

Creator of puzzles - Big Book Killer Sudoku 480 Extreme Puzzles (Volume 5)

Will Shortz Presents Snowed-In Sudoku

Features two hundred all-new extra challenging puzzles. This book includes: 200 hard puzzles; big grids for easy solving; and an introduction by a legendary puzzlemaster.