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
129
34
none
34
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 clubs are remaining when the winners from the previous round totals 4?
Formula: SUM(FILTER(B1, D1=4))
Formula2: SUM(FILTER(B2:B7, D2:D7=4))
Level: easy
Question: What is the round where winners from the previous round totals 8?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=8),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,D2:D7=8),1))
Level: medium
Question: How many clubs remain in the fourth round?
Formula: SUMIFS(B1,A1,"Fourth round")
Formula2: SUMIFS(B2:B7,A2:A7,"Fourth round")
Level: easy
Question: How many new entries started in the round where winners from the previous round is 32?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=32),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,D2:D7=32),5))
Level: medium
Question: How many new entries started in the quarter finals?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Quarter finals"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,A2:A7="Quarter finals"),5))
Level: medium
Question: How many new entries started in the round where winners from the previous round is 16?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=16),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,D2:D7=16),5))
Level: medium