THE GAME, AT A GLANCE
About 0h h1
0h h1 is Q42’s two-color logic puzzle, created by Martin Kool. Fill each grid by balancing both colors, avoiding runs of three and keeping every row and column different. This ad-free version preserves the original puzzle rules and tutorial from the archived open-source release.
Your goal: Complete the grid so every row and column follows all three color rules.
How to play 0h h1
- Choose the tutorial or a board size. Click or tap an editable tile to cycle its color.
- Put equal numbers of both colors in each row and column, with no three matching tiles next to one another.
- Keep all completed rows different from each other, and all completed columns different from each other. Use the hint control if you need a next step.
Publisher controls: Click or tap a tile to cycle its color. Each row and column needs equal numbers of both colors, no three adjacent matching tiles and a unique pattern. Use the in-game tutorial or hint when stuck.
Tips for 0h h1
- A pair of matching neighbors forces the next tile to use the other color.
- A row that already contains its full quota of one color must use the other color in its empty cells.
- Compare nearly finished rows and columns to avoid duplicate patterns.
