2/11/2024 0 Comments Sudoku strategy hidden pairs![]() These strategies are especially good for solving the Tough and Super-Tough puzzles I offer here. I’ve found the XY-Wing and XYZ Wing patterns occur much more frequently, and are good weapons to have in your solving arsenal. The remaining strategies don’t come into play until the Tough puzzles.Īlthough the XWing (and Swordfish) patterns are easy to spot, statistical analysis shows they do not occur very often. The first 6 methods listed above (Naked Single thru Hidden Subset) are sufficient to solve all the “Easy” through “Challenging” puzzles I provide on this site, and most easy/medium newspaper puzzles. The Sudoku Strategy page explains most (but not all) of the simpler “pattern-matching” techniques. ![]() I have not yet found a single website that explains all of these techniques in one location, so I thought I’d provide some links to the various websites where I discovered these techniques. I’ve now learned a number of methods for solving tough Sudoku puzzles by hand, including X-Wing, Swordfish, Jellyfish, Squirmbag, Turbot-fish, XY-Wing, XYZ-Wing, Conjugate Pairs, Bowman Bingo, Simple Coloring, Super Coloring and Tabling. Unlike games of luck such as card and bingo games, guessing is never required. Sudoku is a game of pure logical deduction, just like Kakuro and other Japanese number puzzles.
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