Clever game, surprisingly tricky!
The “how to play” is a bit confusing though, it took a bit to figure out what you meant.
I’d phrase it as:
The top and left numbers are about black tiles, the right and bottom numbers are about blank tiles.
Each number shows the length of the longest segment of tiles of the given color in the given line.
For example a row with a “2” on the left indicates there must be at least one segment of 2 black tiles, and there shouldn’t be any segments of black tiles longer than that.
What might also make it easier to learn is if the numbers change color if you met their requirement, so the player can “try out” which combinations are allowed.