Will Shortz Presents Mind-Melting Sudoku: 200 Cranium-Crushing Puzzles
St. Martin's Griffin
2015
nidottu
Watch out These puzzles are mind melting 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