A Table of Contents

Here's a list of all the posts so far on Sudoku solution tips.  Each one builds on the ideas of the previous entries.

1. Introduction to Sudoku
2. Process of Elimination
3. The Unbearable Uniquness of Sudoku 
4. Unique x 20
5. Going Pair-Shaped
6. Triple Play
7. Interlocking Triples
8. Looking Inward
9. Where do Sudoku Boards Come From?
10. Two and Three in a Bed
11. X-Wings
12. The Password is... Swordfish!

  There are also some blank Sudoku grids for your printing pleasure.

Comments

[hailley]

Why do u make things so difficult
I mean I am a teacher trying to teach my students how to do this and I don't know where the answer key is!!!!!!!!!!!!

[Daniel Rice]

Hi Hailley -

What do you find difficult? My explanations are intended for folks who have some kind of mathematical way of thinking -- they might not be appropriate for younger students.

[Jesse]

Thanks Dan, your posts have been extremely helpful. Could you please comment on how you assign difficult levels to your puzzles?