Sixy Sudoku Wacky ????: 200 Hard 6x6 Puzzles

by Peter Ritmeester

The rules: insert the digits 1-6 just once in each a) row, b) column, c) bold outlined area AND d) in each white and gray rectangle. See Ritmeester's author page for his 18 other books. Peter Ritmeester is the inventor of the Hyper Sudoku, where four gray regions also contain 1-9. By applying this idea to a 6x6 sudoku, an entirely new dimension of logic is created, making a Sixy perhaps even more fun than a 9x9 sudoku. Not plain hard work, but plenty...

• Format: Paperback
• Language: English
• ISBN: 1071051539
• ISBN13: 9781071051535
• Release Date: July 2019
• Publisher: Independently published
• Length: 128 Pages
• Weight: 0.22 lbs.
• Dimensions: 7.0" x 0.3" x 5.0"