Basic Techniques

I had a lot of fun writing this section. The reason is that I just love the logic in these techniques. This is the real "meat" of the game. Some of the techniques are hard to follow at first, and even harder to spot in a puzzle. But with some practice you'll be able to recognize them with a glance.

Please check out our app, Sudoklue, which teaches all of these techniques!

The first techniques in the list will "do the most damage" - that is, solve the most empty cells - so I recommend going through them in order:

Topics in this section:

• Open Singles

• Visual Elimination

• A note on Pencil Marks

• Lone Singles

• Hidden Singles

• Naked Pairs

• Naked Triplets & Quads

• Omission

• Hidden Pairs

• Hidden Triplets & Quads