I refuse to think that the coins were taken from a bot, given the fact that the replaced address took place only after like 45 seconds which is very very quick to crack and broadcast to the network.
But what i think that 0.66 BTC were taken by someone unknown since they transacted like 10 mins after
it could be that the winner is the creator himself.
as we know creator of puzzle know all private key and its also possible that he also applied bot on all puzzle till 160 , if any one succeed his bots snatch that amount in this way nobody get reward of efforts ,is this possible??? just feel i am new to bitcoin