PSE Advent Calendar 2022 (Day 5): The Double Slitherlink Experiment

This puzzle is part of the Puzzling Stack Exchange Advent Calendar 2022. The accepted answer to this question will be awarded a bounty worth 50 reputation.

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'Twas the night before Christmas 1802, and Thomas Young was conducting his now famous double-slit experiment. It was the first demonstration of the wave behaviour of visible light. Moreover, it displays the fundamentally probabilistic nature of quantum mechanical phenomena.

All in all, the double-slit experiment has become a classic for its clarity in expressing the central puzzles of quantum mechanics.

Fast forward 220 years later, we still love puzzles!

The outcome of this double-slitherlink experiment may or may not be predictable. What we do know for sure is:

  • Similar to the double-slit experiment, we start with a double path (one path in each sliterlink)
  • If all is well, we end up seeing the light
  • Basic slitherlink rules apply

If you feel like these slitherlinks are underconstrained, or just can't see what to do next: further instructions are hidden inside the grids.

sl1 sl2

* This article was originally published here


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