Not Four Puzzle

Completely original puzzle. So simple, yet so complicated.

Completely original puzzle. Although it starts very simple, it can get very complicated soon.

Feed hungry birds completing the 140 puzzles.

Despite having only one rule:

- Never be in a line or clutch of more than three empty cells.

I assure you that many levels will be very hard to solve.

You will be surprised how simple things can get so complicated.