The Times Super Fiendish Su Doku Book 13 : 200 Challenging Puzzles - The Times Mind Games

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Challenge yourself with number puzzles. Previously unpublished quality Su Doku grids from The Times, which help develop your skills to take on Extreme Su Doku. The 200 puzzles in t his collection of treacherously difficult puzzles will stretch even the most advanced Su Doku enthusiast. You will need to use all of your best solving techniques to get to the end of this testing challenge. The puzzles in the collection are of the highest quality and are perfect for the advanced solver in need of a constant supply of ultra-difficult puzzles. Guaranteed to provide hours of mind-stretching entertainment. Show more