For the cryptographic newb, can someone explain how this contest is rigged, and destined for failure, like the previous one apparently was? The rules seem much

For the cryptographic newb, can someone explain how this contest is rigged, and destined for failure, like the previous one apparently was? The rules seem much more liberal this time, to my uneducated eyes... Even if it's still a contest in bad faith, why not break it and claim the money?