strange competition! but if we can to find or cant to imagine this private key - thats mean we can hack any wallet?? as for me it very strange? as I understood private key no one can imagine!
The competition is that the CPD project group has put 100 ETH in the wallet 0x812dfd7fb17f148d5f0e85cb3018f8822ad89e91
Of course no one can guess the private key unless the owner wants us to find it.
This is why it is called "a puzzle"
