@NotATether is helping @soferox
Update:
The OP has since identified two of the unknown WIF characters at the end. We managed to get Bitcrack running on his two GTX 1070's searching for the remaining 8 characters at a combined speed of 400Mkeys/s, over Discord. The estimated runtime is 16 days. Hopefully, it turns up with his lost WIF.
And then he answers, after I had said, that they are searching it there
https://bitcointalk.org/index.php?topic=5404406.0, where is a link to the challenge
https://github.com/phrutis/wif500 and there you can see the damaged paper:
Suppose you do find the coins (which actually belong to @soferox) - how will you return them to him?
I thought that he would know it.
No, you were the first who said that two problems are connected, while they are not:
Are you sure that they are not?
@soferox
Can you give us an answer?