It looks like some solved my Litecoin Riddle. If you're the one, please let me know in the comments. Tomorrow, there will be a new riddle. It will be a little bit harder, but I'll give away 30 US$ worth of Litecoin. But for now, let's take a look at the old one:
This was the riddle:
You can open it in Photoshop and divide it in two parts:
Then you have to rotate the upper part by 90 degrees:
Drag it on top of the other part and set the blend mode to Difference:
and that's the private key. Now, all you have to do is to scan the QR code and import the key into your wallet.