Hidden Triple

Level: Intermediate

When three numbers can only go in the same three cells of a unit, remove the other candidates from those cells.

A Hidden Triple occurs when three numbers can only go in the same three cells within one unit.

Since those three cells split the three numbers between them, you can remove every other candidate mixed in among the three cells.

It's an extension of the Hidden Pair, and an advanced entry-level technique for uncovering hidden structure in densely packed units.

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