The Chain See-Saw is a new obstacle for SASUKE 27 in its Third Stage. The obstacle consists of two long chains, each with its own pulley mechanism, and the chains positioned where each end of the chain are measured the same level apart. The competitor must transfer from the ladder separating it from the previous obstacle and swing out to transfer to the next chain, before transferring to the ladder after the obstacle. If the ends of the chain aren't grabbed at the same time, the end of the chain with the most weight distributed will lengthen while the other will shorten, forcing the competitor into the water. This is what happened to Hashimoto Kouji in the tournament, the only competitor to fail the obstacle of the three to attempt it.