Will Shortz Presents Black Diamond Sudoku

200 Extreme Puzzles

• Author(s): Will Shortz,
• Publisher: St. Martin's Publishing Group
• Pages: 320
• ISBN_10: 1250063426
  ISBN_13: 9781250063427
  
• Language: en
• Categories: Games & Activities / Sudoku ,

Description:...

Watch out! These puzzles are for the most extreme solvers! But if you dare, grab a pen and take on these two hundred all-new extra challenging puzzles in Will Shortz Presents Black Diamond Sudoku.

Features:
- 200 hard puzzles
- Big grids for easy solving
- Introduction by legendary puzzlemaster Will Shortz