Become a Su Doku master with hours of brainteasing new puzzles!It's official! Su Doku is the hottest puzzle craze in years, featured daily in hundreds of newspapers nationwide, and reported on by Newsweek, USA Today, The New York Times, Fortune Magazine, and CBS' The Early Show.Not for the faint of heart, The Big Book of Su Doku #3: Extreme takes Su Doku to a whole new level. Here are 200 brand new "extreme" puzzles, ranging from difficult to diabolical, for Su Doku fans looking for a challenge. Also included is a special section with tips on the best solving techniques, so you too can be a master of Su Doku.200 brand new puzzles of increasing levels of difficulty: Difficult Puzzles Challenging Puzzles Diabolically Hard Puzzles Jigsaw Puzzles Maxi Puzzles Super Puzzles Duplex Puzzles Triplex Puzzles Read Less