Are you hooked on SuDoku-a true SuDokuholic, looking for a challenge? Each challenging puzzle contains a single 'One Choice' number-can you spot it?<p>
Though there are other methods to solve SuDoku puzzles you're stuck on, practice in spotting 'One Choice' numbers will often give you what you need to continue.<p>
Why '2fer'? Not only is each challenging-level puzzle diagonally joined to a puzzle on each book page, it's also joined to a puzzle on prior/following pages. As well, all 122 puzzles are an extension to "The World's Longest SuDoku Puzzle".* <p>
Includes strategy for solving SuDoku puzzles, instructions on how to de-mystify 2fer puzzles, and secret tips on how to find 'One Choice' numbers.<p>
Joe Defries is a current 2-time Guinness^TM World Record Holder*, and is the joe in SuJoku.com &amp; joe-ks.com (the Largest Source of Internet Humour).<p>
Look for more challenging SuDoku puzzles for all difficulty levels-in our upcoming 2fer Puzzle Series-including new Quad (Hyper), Music and Symbol SuDoku puzzles. You'rel on your way to becoming a suJokuholic!