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.

Knapp Daneben Slitherlink

Author: Andrey Bogdanov

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Draw a single continuous loop along the gridlines in the diagram. The numbers in each cell indicate the number of adjacent edges used by the loop, plus or minus 1. The path cannot cross or touch itself.

Example puzzle

Grid control: To draw a fence click at the cell edge or move mouse along the line holding the button. You can also put auxiliary marks by clicking at cells. More details about grid control are at the help page.