Book of Donmon Teith

The vast majority of sudoku puzzles that are labeled hard, expert, challenger, are not really all that difficult. And in a surprising number of cases, they are

Here it comes: a revolution in sudoku solving! This is by far the most complete guide to cracking these addictive puzzles ever produced, with tricks even the ex

Sudoku for the super-smart Mensa members are known for their finely-honed logic skills--and that's just what it takes to become an expert at sudoku. So it's no

Top solvers can try their hand at the One-Sided Gordonian Rectangle; Extended Gordonian Rectangle; Gordonian Polygon; and Alternating Digits. (But they can take

Even more interaction--this time used in combination with other procedures...and a lot more heavily than in the first book.