Expert Sudoku Solver » Intermediate Sudoku Techniques

Sudoku Techniques (Part 8) – The XY-Wing

martinp — Sat, 04 Jul 2009 18:36:17 +0000

As you make progress learning how to play sudoku, you will come across techniques that look similar to ones you have already learned but on your way to becoming an expert sudoku solver, the difference between them will become clearer as you practice. That is the case with the XY-Wing. In shape, it looks a little [...]

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Sudoku Techniques (Part 8) – The XY-Wing

Sudoku Techniques (part 7) – The X-Wing

martinp — Wed, 01 Jul 2009 18:36:57 +0000

How do you feel about your progress as a sudoku solver? By now, you should be picking up most puzzles without fear but there are plenty more sudoku tips to learn before we are finished with this subject. In theory, the subject for this post should be hidden triples and quads. I will confess to [...]

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Sudoku Techniques (part 7) – The X-Wing

Sudoku Techniques (Part 6) – Naked Triples and Quads

martinp — Sat, 27 Jun 2009 17:44:49 +0000

I was very tempted to put Naked Triplets in the title for this post after seeing the traffic that “Naked Pairs” generated. I can’t imagine why there would have been such a boost….I leave that as an exercise for the reader. Naked Triples (and quads) is another sudoku technique that will help you clear out the [...]

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Sudoku Techniques (Part 6) – Naked Triples and Quads

Sudoku Techniques (Part 5) – Naked Pairs

martinp — Wed, 24 Jun 2009 19:03:30 +0000

Today’s sudoku solving technique came as a revelation to me when I first saw it described. I am aware that I may have been using it unconsciously but it is completely obvious when you see it revealed. So then, one small step to helping you play sudoku more easily. This is called Naked Pairs. In the [...]

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Sudoku Techniques (Part 5) – Naked Pairs