Understood. I was commenting on how hard it is to generate a single block though six months ago it was not so hard.
Ahh, yeah, it would require some time. But even if your attempts fail, you are still rewarded with 50 btc for your efforts.
I don't expect that the person responsible bought into mining just for this scam. I'm sure it was an established miner, or more likely, this is all a made up story.