Mirrored from Sudopedia, the Free Sudoku Reference Guide

Naked Quad

A Naked Quad is a Naked Subset of size 4.

It is formed by 4 cells that have candidates for only 4 digits and are collocated in the same house.


The following example shows a Naked Quad in the middle box.


This page was last modified 18:27, 22 January 2007.