Rules for Urjo — a binary determination puzzle

Urjo is a logic puzzle where you use available information to deduce which spots are red and which are blue. Solve puzzles by following these rules:

  • Every row/column contain as many reds as blues.
  • Number indicates how many surrounding spots are of that color.
  • Adjacent rows/columns are different.

Fill all blanks with red/blue. Tap a blank spot to make it red, and tap it again to make it blue. You can also use right mouse button or tapping and sliding to quickly set the color to blue.

Use Hint if you get stuck. Press Undo if you make a mistake.

Open Tutorial if you want to practice the three rules.

Open Tutorial
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