Will Shortz Presents Simply Sinister Sudoku: 200 Hard Puzzles
If you enjoy working on Sudoku puzzles as much as Web Watch does, then this may be of interest to you.
First, let’s talk a little bit about what Sudoku is, for those Web Watch readers who may have been living under a rock for the past 10 years:
Sudoku is a puzzle that is rumored to have been created by a puzzle creator living in Indiana, seemingly around 1979. In 1984, it was published in a Japanese newspaper… and the rest, they say, is history. The puzzle typically is a 9×9 square, and the object is to put the numbers 1-9 into the boxes so each row, column and 3×3 sub-block contains all the 1-9 digits.
In other words, it’s a game that’s absolutely perfect of playing on an iPad or phone.