Masyu Puzzle Library
Pick a size and difficulty, then choose any puzzle. Solved puzzles get a green tick; puzzles in progress are marked so you can pick up where you left off.
How our Masyu puzzles are made
Every puzzle in the library was generated by our own Masyu engine and then verified by a logical solver: it must have exactly one solution, reachable without guessing. Easy and Medium puzzles are solvable with direct deductions; Hard puzzles additionally require one-step what-if reasoning. Duplicate loops are rejected, so every puzzle is genuinely different.