Compare Chrome extensions: 0h h1 vs Udemy Downloader

0h h1 is a little logic game by Q42.

It follows three simple rules:

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

Simply tap a tile to make it red or blue and complete the grid. 0h h1 gives you unlimited puzzles for all four grid sizes:

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