So I believe this what each team needs to do to win the West, without getting into complicated tiebreakers.
Minn - needs to win out, that's it. But THE catch is that Minn still needs to play OSU. Minn has beat Neb, Iowa and lost to NW and still needs to play Wisc.
Neb - Needs to win out and Minn needs to lose one. Neb has beat NW and lost to Minn and still needs to play Wisc, Iowa
Iowa - Needs to win out and Minn to lose once. Iowa has beat Wisc and lost to Minn. Still needs to play NW, Neb.
Wisc - Needs to win out and for Iowa to lose once. Wisc has lost to Iowa and still needs to play NW, Neb, Minn
NW - needs to win out and Neb to lose twice. NW has beat Minn and lost to Neb. NW still needs to play Iowa, Wisc
PUR - Purdue needs to win out and Iowa, Wisc, Neb all lose 3 times and Minn lose twice. Purdue has beat ILL and lost to Mich, Wisc, Iowa, Neb. Purdue still has to play Minn, NW, OSU, Ind
ILL - Needs to win out and have Wisc, Neb lose 3 times, Iowa, Minn lose twice, PUR lose once. ILL has beat MD and lost to PSU, Neb, PUR, Wisc. ILL still has to play Minn, Ind, IOWA, NW.