Table:
0
A
B
C
D
E
F
1
Game
Date
Opponent
Score
Location
Record
2
15
Tue. Dec. 2
Washington Bullets
109-117
Hartford Civic Center
10-5
3
16
Wed. Dec. 3
Denver Nuggets
119-113
Boston Garden
11-5
4
17
Fri. Dec. 5
Philadelphia 76ers
108-106
Boston Garden
12-5
5
18
Sat. Dec. 6
@ Cleveland Cavaliers
86-88
Richfield Coliseum
12-6
6
19
Wed. Dec. 10
New Jersey Nets
108-98
Boston Garden
13-6
7
20
Fri. Dec. 12
Los Angeles Lakers
110-117
Boston Garden
13-7
8
21
Sat. Dec. 13
@ Washington Bullets
105-98
Capital Centre
14-7
9
22
Tue. Dec. 16
@ New York Knicks
107-96
Madison Square Garden
15-7
10
23
Wed. Dec. 17
Indiana Pacers
113-101
Boston Garden
16-7
11
24
Fri. Dec. 19
@ Philadelphia 76ers
100-122
The Spectrum
16-8
12
25
Sat. Dec. 20
@ Milwaukee Bucks
100-120
Milwaukee Arena (MECCA)
16-9
13
26
Fri. Dec. 26
@ Phoenix Suns
122-112
Arizona Veterans Memorial Coliseum
17-9
14
27
Sat. Dec. 27
@ Los Angeles Clippers
114-101
L.A. Sports Arena
18-9
15
28
Mon. Dec. 29
@ Sacramento Kings
119-102
ARCO Arena I
19-9
16
29
Tue. Dec. 30
@ Seattle SuperSonics
104-102
Seattle Center Coliseum
20-9

Questions and formulas:
Question: when indiana pacers were the opponent what was the date?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="indiana pacers"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F16,C2:C16="indiana pacers"),2))
Level: medium