Table:
0
A
B
C
D
E
F
G
1
White
Black
Year
Result
Moves
Tournament
Opening
2
Kramnik
Anand
1994
1–0
60
Munich
B33 Sicilian Defence
3
Anand
Kramnik
1998
½–½
40
Chess Classics Giants
E04 Catalan Opening
4
Kramnik
Anand
1998
½–½
38
Chess Classics Giants
E34 Nimzo-Indian Defence
5
Kramnik
Anand
1998
0–1
37
Chess Classics Giants
A35 English Opening
6
Kramnik
Anand
1999
½–½
29
Wijk aan Zee
E06 Catalan Opening
7
Anand
Kramnik
2001
1–0
28
Mainz CC Champions Duel
B33 Sicilian Defence
8
Kramnik
Anand
2001
½–½
38
Mainz CC Champions Duel
D27 Queen's Gambit Accepted
9
Kramnik
Anand
2007
1–0
21
Moscow Blitz World Championship 2007
D13 Slav Defence
10
Anand
Kramnik
2007
½–½
17
Moscow Blitz World Championship 2007
C65 Ruy Lopez : Berlin Defence
11
Kramnik
Anand
2009
½–½
45
Moscow Blitz World Championship 2009
A38 English opening
12
Anand
Kramnik
2009
1–0
40
Moscow Blitz World Championship 2009
B01 Scandinavian Defence
13
Kramnik
Anand
2013
1–0
52
Zurich Chess Challenge
A20 English opening
14
Anand
Kramnik
2013
0–1
45
Zurich Chess Challenge
C42 Petrov Defence
15
Kramnik
Anand
2013
½–½
43
Tal Memorial
A08 King's Indian Attack

Questions and formulas:
Question: Which year had e34 Nimzo-Indian defence is the opening?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,G1="e34 nimzo-indian defence"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G15,G2:G15="e34 nimzo-indian defence"),3))
Level: medium