Table:
0
A
B
C
D
E
F
1
Match
Date
Competition or tour
Ground
Opponent
Score1
2
1
7 Jul 2007
Friendly
A
Knokke
11 - 0
3
2
10 Jul 2007
OBI-Cup
N
Galatasaray
0 - 1
4
3
12 Jul 2007
OBI-Cup
N
Borussia Dortmund
1 - 2
5
4
18 Jul 2007
Friendly
A
Nancy
2 - 1
6
5
19 Jul 2007
Friendly
A
Wolvertem
3 - 0
7
6
21 Jul 2007
Friendly
A
Marseille
2 - 4
8
7
22 Jul 2007
Friendly
A
OH Leuven
0 - 2
9
8
25 Jul 2007
Friendly
N
Alemannia Aachen
0 - 1
10
9
31 Jul 2007
Friendly
A
Crystal Palace
1 - 1
11
10
6 Jan 2008
Friendly
N
Be Quick
7 - 0
12
11
8 Jan 2008
Friendly
A
Cartagena
0 - 2
13
12
21 May 2008
Friendly
A
Wolvertem
4 - 1

Questions and formulas:
Question: What is the date ground A and Cartagena as an opponent?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(D1="a")*(E1="cartagena")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F13,(D2:D13="a")*(E2:E13="cartagena")),2))
Level: medium
Question: What ground has a match smaller than 2?
Formula: LET(query1,SUMMARIZE(D1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,2)<2))
Formula2: LET(query1,SUMMARIZE(D2:D13,SUMX(A2:A13)),FILTER(query1,CHOOSECOLS(query1,2)<2))
Level: hard
Question: What is the score of the competition of friendly, at match 7?
Formula: LET(query1,LET(query1,FILTER(A1:F1,C1="friendly"),SUMMARIZE(CHOOSECOLS(query1,6),SUMX(CHOOSECOLS(query1,1)))),FILTER(query1,CHOOSECOLS(query1,2)=7))
Formula2: LET(query1,LET(query1,FILTER(A2:F13,C2:C13="friendly"),SUMMARIZE(CHOOSECOLS(query1,6),SUMX(CHOOSECOLS(query1,1)))),FILTER(query1,CHOOSECOLS(query1,2)=7))
Level: hard