BeginnerBasics

Practise: Cross-Hatching

This puzzle leans on the Cross-Hatching throughout. Work through it and the move becomes second nature.

Practice

Mistakes0Score1,000Time0:00

How to spot it

Pick a box and a digit that is missing from it. Check each of the three rows through the box: does it already contain that digit elsewhere? If so, the whole row is out. Repeat for the three columns. Count what survives.

Read about Cross-Hatching again All techniques

Put it to use

Where you will meet it

This pattern is the backbone of easy grids. Start one and you will use it within a few moves.

Play Easy

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