Bridges

Bridges is a puzzle from 'Nikoli' a Japanese puzzle magazine. I have written this Java version.

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Mouse operation:
Drag from one island to another.

Left drag adds a bridge or removes 2 bridges.

Right drag adds 2 bridges or removes 1 bridge

Click on an island to mark it green.

Keyboard operation:
'n' gives a new game
'r' restarts the current game
'l' toggle whether loops are allowed.
's' show solution

Description:

Notes:

Puzzles 5x5, 7x7, 9x9, 11x11 and 13x13 can be selected.
Drag in the direction you want to go and when the destination island is shown pink you can release the mouse.
In this version there might be more than one solution to a particular puzzle - but all solutions are recognised.
Click to mark an island if you think the bridges are correct. The mark will disappear if you draw another bridge to or from the island or if you click the island again.
Use 's' to overlay or remove the solution - this might be different to your solution (I'm working on it).
If you want to allow loops, toggle the facility with 'l'. The solution then might or might not have loops in it.