0h h1

In-app purchases
4.6
8K reviews
500K+
Downloads
Content rating
Everyone
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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
Updated on
Aug 22, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

4.6
7.54K reviews
Hayden Fredrick
March 21, 2024
Amazing puzzle game! It can either be relaxing or exciting depending on how you play it: back when I started, I loved the huge boards, but now I like to beat the small boards as fast as possible, my best time being 2s on 4x4! I love this game so much, it introduced me to a great developer who I will surely be paying attention to from now on. I just wish there was some sort of way to connect with its community! But I guess that's nothing wrong with the game. Overall it's awesome, love it!!
1 person found this review helpful
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Angie Wehrly
March 22, 2024
The simplicity of it is genius!! Love the fact that it requires a little thought to complete the larger ones. A well developed game at its most basic level !!! Doesn't take a lot of space & yet is so addicting to play, without bells & whistles. My first thoughts were oh, this is gonna be a boring download, yet it was far from it & honestly has be coming back to it as one of my favorites when I'm wanting to escape the days stress. I def love it for so many reasons.
1 person found this review helpful
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whelkpeopleofdoom
March 15, 2024
GREAT puzzle, but the app needs work. It won't save puzzles you exit out of and the app restarts itself often if you step away from it (even if you allow unrestricted battery usage in your settings). Basically, if you open a puzzle, you need to complete it in that session. If you just go to check a text real quick, there is a 50% chance the app restarts itself and your puzzle is gone. Other than software issues, customizable colors would be nice! Or more themes. Visually it's ugly - sorry 🙁
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