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<sub>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.

< Previous DoorNext Door ></sub>

'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 slitherlink)
• 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.

<sub>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.

< Previous DoorNext Door ></sub>

'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 slitherlink)
• 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.

Hint:

In the puzzle text, feel and can't see are hints towards finding the hidden instructions in the grids.

<sub>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.

< Previous Door</sub>

'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 slitherlink)
• 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.

<sub>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.

< Previous DoorNext Door ></sub>

'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 slitherlink)
• 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.