We'll pretty much have to win out and have some help from other teams to have a chance. At the very least we CAN NOT lose to Penn State, Wisconsin, or Minnesota. Those teams are just too low in RPI for us to overcome with our schedule this year (and unfortunately we play PSU twice, ouch!). Lose 1 or 2 of those and you're probably looking at winning the B1G tourney.
With that said, we still have Purdue X2, MSU, Rutgers, and OSU which would all be significant RPI wins (Northwestern is a ?, they have been falling lately).