Shade duplicate numbers without letting shaded cells share an edge, and keep every white cell connected. Fifteen uniquely solvable 5×5, 6×6 and 7×7 Hitori islands, Keep circles, live rule checks, repeat highlighting, keyboard and pointer controls, undo, assisted hints and local saves. Source: https://github.com/chrisboyle/sgtpuzzles/blob/d1e10eb57dd80af4999e698a9ab31f546e9a0b9d/app/src/main/jni/singles.c (MIT). Source metadata tags: github-source, game.

ink-and-islands-hitori.skillsafe.ai

Run app here

PricingCompletely free

Security scanClean — skill and frontend scanned

Source chrisboyle/sgtpuzzles

Created2026-10-27

Updated2026-10-27

Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.