RocketSudoku.com

Y Wing

Hard

A Y-Wing is an technique where two share a "pivot" cell.

How it works

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Locate the Pivot

The Pivot can be any cell. Notice 2 and 7 here.

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Locate the wings

From the pivot, look for two more wing cells . Each wing must share one digit with the pivot, and one digit with each other.

Note

The wing cells must not each other.

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Spot the contradiction

If both the wings were the digit they share with the pivot, then the pivot would have no solution.

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One or both must be 3

Therefore, we can be certain that one or both of the wings () must be 3.

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Eliminate from shared peers

Safely eliminate 3 from any cell that sees both wings.

All Hints

Unlock hints to find
the Y Wing on your board.

Next up

W WingHard