Hidden Pair Walkthrough

A Hidden Pair is two digits that appear in only the same two cells of a unit. Those cells must hold those two digits, so all other candidates can be stripped from them.

Sudoku board with pencil-mark candidates before applying the Hidden Pair technique — Before — candidates pencilled in. There is a Hidden Pair in Column 9.

There is a Hidden Pair in Column 9. Applying the Hidden Pair eliminates 2 candidates (struck out in red below; any solved cells shown in green).

The same Sudoku board after the Hidden Pair technique eliminates 2 candidates — After applying the Hidden Pair.

Learn the Hidden Pair technique →Practice it on a real puzzle →