Peter Ritmeester

About The Author

Peter Ritmeester is founder and owner of PZZL.com and was General Secretary of the World Puzzle Federation (WPF) for twelve years. Books with his sudoku, presented by Will Shortz, have been on the bestseller lists for more than ten years.

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Books by Peter Ritmeester

Pocket Posh Sixy Sudoku Hard

200 6x6 Puzzles with a Twist

By Peter Ritmeester

Sixy sudoku puzzles bring a whole new dimension of logic, making a 6 x 6 possibly even more fun than a 9 x 9 sudoku! There is no plain hard work, just a lot of logic and insight.

Peter Ritmeester, founder and owner of PZZL.com, is the inventor of Hyper Sudoku where four gray regions...

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Pocket Posh Sixy Sudoku Easy to Medium