suguru puzzle   tectonic puzzel

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Try to solve our kuromasu puzzles using logical deductions. Kuromasu (Japanese: kurodoko) is a logic puzzle published by Nikoli. There are easy, medium and hard puzzles.

When you have never solved a kurodoko before, check the rules.

If you need tips to solve a puzzle, than look on kuromasu techniques.

Follow the steps below to solve a kuromasu puzzle from our database.

  • LEV: choose your starting level. In brackets is the number of available puzzles.
  • PUZ: enter the number of the puzzle you want to solve.
  • START: the puzzle is now loaded and ready to be solved.
  • Click on a blue cell to make it black.
  • Click on a black to make it white.
  • Click on a white cell to make it blue and neutral again.
  • The puzzle is ready when you have only black and white cells.
  • Click on ✓ to check the puzzle.
  • Click on SOL to show solution.