Kuromasu | Logic Puzzles

Kuromasu is a challenging logic puzzle. Find where the black fields are, so that each field with a number sees exactly that number of white fields in horizontal and vertical direction. Each puzzle has exactly one solution, which can be found through logic reasoning. No guessing is needed!

While solving these logic puzzles can be tough, you can always check if your solution is correct so far and ask for a hint if you get stuck.

Solve these logic puzzles to challenge yourself, relax, exercise your brain, or simply pass the time. These puzzles offer hours of engaging entertainment! With difficulties ranging from easy to expert, there's something for puzzle enthusiasts of every skill level.

Are you up for the challenge? Can you solve them all?

Features:
- Check if your solution is correct so far
- Ask for hints (unlimited and with explanation)
- Works offline
- Dark mode and multiple color themes
- And much more...

Kuromasu can be classified as a binary determination puzzle, like Hitori or Nurikabe, or as object placement puzzle like Battleships or Star Battle (Two not Touch). The puzzle is invented by the Japanese puzzle publishing company Nikoli and it first appeared in 1991. The word kuromasu is Japanese and translates to something like "where are the black fields".

All puzzles in this app are created by brennerd.