KnotSign

Puzzle Lab is a compact logic game built around node states, link rules, and careful deduction.

Play through a staged story with gradually denser boards, then switch to a daily challenge or endless random puzzles when you want a fresh board.

Tap nodes to toggle their state, watch each link react in real time, and keep target nodes active while locked nodes stay off. Use the built-in hint, reset, and stage selection tools to recover from a dead end without losing your place.

The app stores progress locally so you can return to your unlocked stages, cleared boards, and best reset record at any time.