How to solve this one? I have been stuck on it for like 30 minutes.

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nice little game just a pity its not longer or harder took me 27 minutes

How do I rotate the piece counter-clockwise? I've just completed the game under 30 minutes and this is the only achievement left to unlock, but I don't know how to make them rotate counter-clockwise. Please help.

Hi! How can I reset the progress? Thanks