0h h1

Q42

In-app purchases

About this game

0h h1 is a little logic game that follows three simple rules:

- Three red tiles or three blue tiles next to each other in a row or column isn't allowed
- A full row or column must have as many blue tiles as it has red ones.
- No two rows are the same. No two columns either.

It's up to you to complete the grid without ever having to guess. Simply tap a tile to make it blue or red and complete the grid.

0h h1 is 100% free, without ads or locked content and gives you unlimited puzzles in these grid sizes:

4 x 4
6 x 6
8 x 8
10 x 10
12 x 12

Each puzzle can be played in perfect Zen mode without any pressure. But you can attempt to beat your personal best time in the game's time trials, unlock fun achievements and compete with friends in leaderboards.

0h h1 is akin to Binary Sudoku, also known as Takuzu, Binairo or Binaire.
0h h1 is a little gift to you. I hope you enjoy it.
0h h1 can also be played on 0hh1.com.

And don't forget to check out its sibling game 0h n0! 0hn0.com

Ratings and reviews

Very simple and effective puzzle game. My only gripe is that it is missing several quality of life features that would make play more enjoyable, primarily that your progress is not saved and you cannot restart a puzzle. However, I understand the nature of app reviews, so I'm still rating it 5 stars due to the lack of ads and consistently solvable puzzles, which is quite hard to find.

Interesting game but like others said, gets old after a little while. My 6 year old is able to do the 6x6 boards on her own (for context). I'd give it higher stars if your progress didn't disappear virtually every time you go away from the game for anything length of time, for that reason alone I wouldn't recommend since you can't casually play at your leisure without "fear" of your progress disappearing.

I'm not the type of person that leaves reviews, so I'm not exaggerating when I say this game changed my life. It's easy to play, has no obnoxious ads, and is the perfect level of difficulty. Whenever I'm feeling stressed or have a panic attack, 0h h1 is my go-to tool to focus and calm down. The dark background is perfect, and the patterns are perfect for anyone who gets anxious over disorder/unsolvable puzzles.