Nurikabe
puzzle game for Commodore 64, 2022

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Rules: https://en.wikipedia.org/wiki/Nurikabe_(puzzle)
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Some useful keyboard shortcuts
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[PAUSE] - stop/continue game
[F9] - quick load game state
[F12] - quick save game state (still stored after leaving the site)
[F11] - toggle fullscreen mode
[ScrollLock] - quick switch control ports
[PageDown] - make a screenshot (320x200)