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Crane

Hard

A Crane is an AIC technique that follows a in a along two adjacent , forming a paper bird shape.

How it works

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Start by finding a strong link in a Box

This box has a on 6 — only two cells in the can be 6.

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Do one of the 6 connect along a line?

All we need is a in a . It's okay that there are other 6's in the column.

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Follow the adjacent line

A final along the opposite type finishes the Crane shape.

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Spot the contradiction

If neither was 6, then the line would be invalid. It would have more than one 6.

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One end must be 6

At least one of the two end cells must be 6.

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Eliminate from shared peers

Safely remove 6 from any cell that sees both ends.

All Hints

Unlock hints to find
the Crane on your board.

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SkyscraperHard