Puzzle 9: Domino Extra

domino-extra

Rules Find the whole set of dominos with numbers 1 to 6 by dividing the grid into orthogonally connected areas with two digits each.

This variation on the standard Domino puzzle featured on the Dutch round of last year’s WPC, there’s some more on Bram’s blog.

There should be two quite different ways to get started on this one.

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