Unique {0} type 3 (with Hidden {7})

The cells {3} form a Unique {0} with the values {1} and {2}. There are exactly two ways of placing the values {1} and {2} in the cells of the Unique {0}, forming two possible configurations. In both configurations, each row, column or box touched by the Unique {0} contains each of the two values {1} and {2} exactly once. As a result, if one of these two configurations were part of the solution, it could then be replaced by the other one to get a second valid solution.

Because a valid sudoku cannot have more than one solution, none of the two configurations of the Unique {0} can be valid. This implies that either {4} or {5} contains one of the values {6}. It follows that either {4} or {5} forms a Hidden {7} with {8} on the values {9} in the {10}.

Other potential values can therefore be removed from {8}.