LEVEL 5
Pointing Pair
A candidate appears in one line inside a box and points to eliminations outside it.
How to find it
- Choose one candidate inside a 3×3 box.
- Find two candidate cells aligned in one row or column.
- Remove the candidate from that line outside the box.
Logical demonstration
The violet cells represent the pattern; the gold cell represents the resulting placement or elimination. Verify every highlighted candidate belongs to the required houses before acting.
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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.
GUIDED PRACTICE · EXERCISE 1 OF 3
Pointing Pair training
Identify the logically justified next action. Violet cells form the pattern and the gold cell is the proposed result.
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