This puzzle uses an extension of the Zipper Lines ruleset from Jaze that allows for even-length lines. As you can see in the image, the top-left line has it's center marked between two cells.
Click here to search for more Zipper Lines puzzles on LMD. If you've never solved a puzzle with this ruleset before, I'd recommend A Totally Balanced Approach as an introduction.
Here is a 4x4 example (left) and it's solution (right). The totals are 6 for the even line and 4 for the odd line. you can play the example here.
Solution code: Row 1 (6 digits)
on 24. November 2023, 03:26 by adalg
After first trying some keys in wrong keyholes the path suddenly lit up, full of rewards!
on 19. November 2023, 19:38 by SamuPiano
Fun break-in and good logic throughout!
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