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Hashi (short for "hashiwokakero", also known as "Bridges" or "Chopsticks") is published by Nikoli. It is played on a grid of any size (though the grid is usually not drawn), with numbers (usually circled) in the grid. Bridges must be drawn orthogonally to connect all of the islands. Bridges must not cross one another, they must have distinct beginning and end points. There is a maximum of two bridges that can connect two points. The number of bridges connecting to other islands must match the number on the island. All of the bridges must make one interconnected group.

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lkjh Maastricht University
Data Science and Knowledge Engineering (DKE)
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This project is funded by a €2m
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