This isn't really a fair contest unless you have intentionally generated these addresses in a way that can be brute-forced (something like
the WarpWallet challenges). Since the addresses have no outgoing transactions, the only available attack vector is to brute force secp256k1+sha256+ripemd160. But without knowing how the addresses were generated (for example, they could just be random 160-byte addresses, in which case they are for all practical considerations unspendable) I'm not going to waste my time.
You are a wise man, i believe they are unspendable. I was just having a bit of fun. The owner of the wallet somehow, he doesn't know how he did it, overwrote the .dat file. He was messing around manipulating the wallet from outside being clever. Made his face quite red for a bit and that doesn't look good on an IT lecturer.
BACK UP! BACK UP! BACK UP!, He broke his own golden rule!