Example puzzle

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This is an example puzzle. You can solve it the same way as you would solve competition puzzle, but result never stored. You can reveal an answer for the puzzle by clicking "Show answer" link.

Domino Castle with Sums

Author: Andrey Bogdanov

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Place the given dominoes into the shape. Values in the halves which touch each other must be the same. Numbers outside show the sum of all digits which are in the corresponding row or column.

Example puzzle

Grid control: Click at a cell reveals the value chooser. Click at the selected value changes the state of the cell. More details about grid control are at the help page.