Table:
0
A
B
C
D
E
1
Home (1st leg)
Home (2nd leg)
1st Leg
2nd leg
Aggregate
2
Independiente
Ramón Santamarina
3-1
3-2
6-3
3
Talleres
Estudiantes La Plata
1-1
1-3
2-4
4
Newell's Old Boys
Chacarita Juniors
0-0
2-1
2-1
5
San Lorenzo
Argentinos Juniors
2-2
0-1
2-3
6
San Martín
Estudiantes RC
4-2
0-0
4-2
7
Boca Juniors
Vélez Sársfield
3-2
0-3
3-4
8
Ferro Carril Oeste
Unión
1-0
2-1
3-1
9
Deportivo Español
River Plate
2-1
0-5
2-6

Questions and formulas:
Question: What was the 2nd leg that had a first leg of 1-1?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="1-1"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,C2:C9="1-1"),2))
Level: medium
Question: What was the first leg home that had a total aggregate of 3-1?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="3-1"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,E2:E9="3-1"),1))
Level: medium
Question: What was the 1st leg that had a 4-2 aggregate?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="4-2"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,E2:E9="4-2"),3))
Level: medium
Question: What was the 1st leg that had a 1st get home for the Boca Juniors?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="boca juniors"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,A2:A9="boca juniors"),3))
Level: medium
Question: What was the 2nd leg that had the Estudiantes La Plata home for the 2nd leg?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="estudiantes la plata"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,B2:B9="estudiantes la plata"),4))
Level: medium