[EricH]

1997: 71 had a detaching mechanism that dominated the game, with the help of the rest of the robot. (The next year, no detaching mechanisms intentionally became part of the rules.)

NBD: I believe that was 47, not sure of the year. (It was before Dr. Joe posted the whitepaper, though.)

With regards to 71 in 2004, 190 in that same year had the capability to steal the doubler from their opponent's goal and place it on their own, while hanging, while blocking the entire bar. I don't recall that they ever actually did it in competition, though, at least while I was watching. Two other teams also tried for the steal, but one scrapped it entirely and one switched to a simple descorer device.