Tier 3 · Lesson 1
Naked Triple
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Step 1 of 7
The Naked Pair, scaled up. Three cells in a unit whose candidates between them use exactly three digits — those three digits are claimed. Nothing else in the unit can be any of them. The cells don't need to look the same — one might hold {1,2,3}, another {1,3}, the third {2,3}. As long as the union of their candidates is three digits.