X-treme Sudoku

Description

The next step, like having a whole book of just Saturday Times crossword puzzles. Even more fiendish, even more fun, X-treme Sudoku proudly presents 320 puzzles rated “Difficult” to “Very Difficult.” These are the toughest, knottiest, most demanding Sudoku out thereÑprepare to have your brain cells crackle, your pencils melt, your mind obsessed with numbers and squares.