This genre can be seen as mixture of genres Nurikabe ぬりかべ (often portrayed with islands) and Snake. Hence its name is a taken from a landmark locally known as "Snake Island".
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This puzzle was transcribed posthumously with permission from the author.
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Acknowledgements and Changes
2025-01-01 Thanks PinkHoodie for noticing an incorrect case, corrected before the release
2025-01-08 Thanks Rook for automode suggestions and for quickly detecting a global regression.
2025-01-09 Rook detected a missing constraint before the release, now added - thank you!
2025-01-12 Translucent vertex highlighting, so that the lines underneath remain visible, for a more ergonomic solving.
2025-01-22 Thanks to Rook for meticulously making the rule panels of Golem Grad, through several iterations! The latest includes a bottom row to clarify that empty areas can be part of the solution.
2025-01-23 Thanks to PinkHoodie for sending a Golem Grad puzzle for rollout. Also, Jack Lance's puzzle was added.
2025-01-26 puzzletters PinkHoodie composed 1 Golem Grad (classic) puzzle as part of the 16x6 series!