Will Shortz Presents Black Diamond Sudoku: 200 Extreme Puzzles

ISBN-13: 9781250063427 / Angielski / Miękka / 2015 / 320 str.

Will Shortz

Opis

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