Table:
0
A
B
C
D
E
F
1
Date
Opponent
Score
Loss
Attendance
Series
2
October 3
@ Athletics
7 - 3
Stieb (0-1)
49,435
0-1
3
October 4
@ Athletics
6 - 3
Stottlemyre (0-1)
49,444
0-2
4
October 6
Athletics
7 - 3
Davis (0-1)
50,268
1-2
5
October 7
Athletics
6 - 5
Flanagan (0-1)
50,076
1-3
6
October 8
Athletics
4 - 3
Stieb (0-2)
50,024
1-4

Questions and formulas:
Question: What was the date of the game in which the series was 1-4?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="1-4"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,F2:F6="1-4"),1))
Level: medium