LEVEL 5
Hidden Pair
Two digits occur in only the same two cells of a house.
How to find it
- Count where each missing digit can appear.
- Find two digits restricted to the same two cells.
- Remove all other candidates from those cells.
Candidate-map demonstration
The violet cells mark the pattern and the gold cell marks the resulting placement or elimination. Treat this compact map as orientation; use the verified full puzzle below to practise the actual deduction.
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Common mistakes
- Using cells that do not share the required row, column, box or peer relationship.
- Removing a candidate before confirming every occurrence in the pattern.
- Confusing a possible pattern with a completed logical proof.
VERIFIED PRACTICE
Hidden Pair training
Loading a mathematically verified puzzle state…