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Hidden Pairs
Points. A
hidden pair is formed when all candidates of 2 digits in a house are
restricted to only two cells. The two cells must contain the 2 digits. All
candidates of other digits can be removed from the two cells.
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Hidden Pair, Row. In
row 5, digits 1 and 6 are contained in only two cells. Therefore no other
digits can be present in the two cells and the red candidates can be
removed.
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Hidden Pair, Column.
In column 5, digits 4 and 5 are contained in only two cells. Therefore no
other digits can be present in the two cells and the red candidates can be
removed.
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Hidden Pair, Box. In box 5, digits 3 and 9 are contained in only two cells. Therefore no other digits can be
present in the two cells and the red candidates can be removed.
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