The 3rd stage of the annual John Van Caneghem Tournament (2009).

Even with 1000 free hours (not just 10 in total), I wouldn't be able to solve the puzzle faster than 4 days – that's 100%. So, aiming for 2 (or 3, which is almost like an armored tank, Eldgernon) is definitely impressive. I give full respect for the description of this.