Sudoku Easy to Hard Presented by Will Shortz, Volume 2: 100 Wordless Crossword Puzzles

"On no account should any reader not already hooked so much as a glance at a sudoku. That way lies addiction and madness. Sudoku are to the first decade of the twenty-first century what Rubik's Cube was to the 1970s."

—Tom Utley, The Daily Telegraph

From puzzlemaster and New York Times crossword editor Will Shortz comes sudoku, the new "wordless crossword" puzzle that's taking the world by storm! Once you start, you won't want to stop. These addictive puzzles are...