what dates did the bears play in 1991?
september 1, 1991, september 8, 1991, september 15, 1991, september 23, 1991, september 29, 1991, october 6, 1991, october 17, 1991, october 27, 1991, november 3, 1991, november 11, 1991, november 17, 1991, november 24, 1991, november 28, 1991, december 8, 1991, december 14, 1991, december 23, 1991
on which of these dates did the bears win?
w 10-6, w 21-20, w 20-17, w 19-13, w 10-0, w 20-17, w 20-10, w 34-17, w 31-17, w 27-13, w 27-0
which of these scores have a difference of 27?
w 27-0
what was the date that this score was made?
december 14, 1991