Table:
0
A
B
C
D
E
1
Opposing Team
Against
Date
Venue
Round
2
Gillingham
1
20 August 1991
Fratton Park
1st Round 1st Leg
3
Gillingham
3
27 August 1991
Priestfield Stadium
1st Round 2nd Leg
4
Oxford United
0
24 September 1991
Fratton Park
2nd Round 1st Leg
5
Oxford United
0
9 October 1991
Manor Ground
2nd Round 2nd Leg
6
Manchester United
3
30 October 1991
Old Trafford
3rd Round

Questions and formulas:
Question: What is the date of the 2nd round 2nd leg?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="2nd round 2nd leg"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,E2:E6="2nd round 2nd leg"),3))
Level: medium
Question: What is the Round against Gillingham with an Against smaller than 3?
Formula: LET(query1,LET(query1,FILTER(A1:E1,A1="gillingham"),SUMMARIZE(CHOOSECOLS(query1,5),SUMX(CHOOSECOLS(query1,2)))),FILTER(query1,CHOOSECOLS(query1,2)<3))
Formula2: LET(query1,LET(query1,FILTER(A2:E6,A2:A6="gillingham"),SUMMARIZE(CHOOSECOLS(query1,5),SUMX(CHOOSECOLS(query1,2)))),FILTER(query1,CHOOSECOLS(query1,2)<3))
Level: hard