XY-Wing

The three cells {0}, {1} and {2} form an XY-Wing pattern on the value {3}. Regardless of the correct value of the cell {0} ({4} or {5}), one of the two cells {1} or {2} will have the value {3} as its only remaining possible value. It follows that either the cell {1} or the cell {2} must contain the value {3}.

Other occurances of the value {3} can therefore be removed from any cells sharing a row, column or block with both {1} and {2}.