Table:
0
A
B
C
D
E
F
1
Rank
1-year peak
5-year peak
10-year peak
15-year peak
20-year peak
2
1
Bobby Fischer , 2881
Garry Kasparov, 2875
Garry Kasparov, 2863
Garry Kasparov, 2862
Garry Kasparov, 2856
3
2
Garry Kasparov , 2879
Emanuel Lasker, 2854
Emanuel Lasker, 2847
Anatoly Karpov, 2820
Anatoly Karpov, 2818
4
3
Mikhail Botvinnik , 2871
José Capablanca, 2843
Anatoly Karpov, 2821
Emanuel Lasker, 2816
Emanuel Lasker, 2809
5
4
José Capablanca , 2866
Mikhail Botvinnik, 2843
José Capablanca, 2813
José Capablanca, 2798
Alexander Alekhine, 2781
6
5
Emanuel Lasker , 2863
Bobby Fischer, 2841
Bobby Fischer, 2810
Alexander Alekhine, 2794
Viktor Korchnoi , 2766
7
6
Alexander Alekhine , 2851
Anatoly Karpov , 2829
Mikhail Botvinnik, 2810
Mikhail Botvinnik, 2789
Vasily Smyslov , 2759

Questions and formulas:
Question: What is the lowest rank of 5-year peak bobby fischer, 2841?
Formula: MINIFS(A1,C1,"bobby fischer, 2841")
Formula2: MINIFS(A2:A7,C2:C7,"bobby fischer, 2841")
Level: easy
Question: What is the 1-year peak with anatoly karpov, 2821 as the 10-year peak?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="anatoly karpov, 2821"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,D2:D7="anatoly karpov, 2821"),2))
Level: medium
Question: What is the 20-year peak with emanuel lasker, 2816 as the 15-year peak?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,E1="emanuel lasker, 2816"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,E2:E7="emanuel lasker, 2816"),6))
Level: medium