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The Sudoku Challenge: 200 Puzzles to Strain Your Brain!
The Sudoku Challenge 200 Puzzles to Strain Your Brain Author:Nikoli It’s a sudoku addict’s dream collection: 200 fantastic puzzles in a range of levels, some simple enough for a child to complete and other brainbusting grids that only a master can handle—but everyone will want to try. Plus, each unique puzzle is generated by hand, not computer, to make a more satisfying experience. It’s s... more »o absorbing that solvers won’t know where the time went while they’ve worked their way logically from the Quick and Easy section through Tricky Brain-teasers, until finally reaching and conquering The Ultimate Challenge. Because it’s in a handy pocket-size, too, you can play anywhere!« less