Table:
0
A
B
C
D
E
F
1
Round
Clubs remaining
Clubs involved
Winners from previous round
New entries this round
Leagues entering at this round
2
Preliminary round
123
22
none
22
Levels 4 and 5 in football league pyramid
3
Second round
64
64
48
16
Gambrinus liga
4
Third round
32
32
32
none
none
5
Fourth round
16
16
16
none
none
6
Quarter finals
8
8
8
none
none
7
Semi finals
4
4
4
none
none

Questions and formulas:
Question: How many winners from previous round were there in the semi finals?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Semi finals"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,A2:A7="Semi finals"),4))
Level: medium
Question: What was the round that had 32 winners from previous round?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=32),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,D2:D7=32),1))
Level: medium
Question: How many clubs were remaining in the preliminary round?
Formula: SUMIFS(B1,A1,"Preliminary round")
Formula2: SUMIFS(B2:B7,A2:A7,"Preliminary round")
Level: easy
Question: What was the round when there were 16 winners from the previous round?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=16),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,D2:D7=16),1))
Level: medium
Question: How many clubs were involved in the second round?
Formula: SUMIFS(C1,A1,"Second round")
Formula2: SUMIFS(C2:C7,A2:A7,"Second round")
Level: easy