127.0.0.1: Created page with "A '''Naked Pair''' is a Naked Subset of size 2. It is formed by 2 cells that have candidates for only 2 digits and are collocated in the same house. == H..."

2021-10-25T11:21:11Z

Created page with "A '''Naked Pair''' is a Naked Subset of size 2. It is formed by 2 cells that have candidates for only 2 digits and are collocated in the same house. == H..."

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A '''Naked Pair''' is a [[Naked Subset]] of size 2.

It is formed by 2 [[cell]]s that have [[candidate]]s for only 2 [[digit]]s and are collocated in the same [[house]].

== How it works ==
[[Image:NakedPairs.png]]

Pay attention to the [[cell]]s '''r1c7''' and '''r3c7''' (highlighted in yellow) in the 7th [[column]], which only have the two [[digit]]s 5 and 6 as [[candidate]]s. Therefore, the digits 5 and 6 must go into these two cells. This means that 5 and 6 can be eliminated in the remaining cells in the 7th column, so '''r6c7<>5''' and '''r7c7<>6'''.

Incidentally, the '''r1c7''' and '''r3c7''' are also collocated in the same [[box]], which is the 3rd one. Using the same logic leads to '''r1c9<>5''', '''r1c9<>6''' and '''r3c8<>6'''.

== See also ==
* [[Hidden Pair]]
* [[Naked Triple]]
* [[Naked Quad]]

[[Category:Solving Techniques]]

Naked Pair - Revision history

127.0.0.1: Created page with "A '''Naked Pair''' is a Naked Subset of size 2. It is formed by 2 cells that have candidates for only 2 digits and are collocated in the same house. == H..."