Table:
0
A
B
C
D
E
F
1
Year
Men's singles
Women's singles
Men's doubles
Women's doubles
Mixed doubles
2
1991
Tamas Gebhard
Andrea Harsági
Tamas Gebhard Richard Banhidi
Andrea Dakó Andrea Harsági
Jeliazko Valkov Diana Filipova
3
1992
Iasen Borisov
Reni Asenova
Michail Popov Tzvetozar Soyanov
Reni Asenova Raina Tzvetkova
Emerik Balazs Erika Stich
4
1993
Anatoliy Skripko
Elena Nozdran
Vladislav Druzchenko Valeri Streltsov
Elena Nozdran Irina Koloskova
Valeri Streltsov Elena Nozdran
5
1994
No competition
No competition
No competition
No competition
No competition
6
1995
Mihail Popov
Victoria Hristova
Mihail Popov Liyben Panov
Victoria Hristova Raina Tzvetcova
Svetoslav Stoyanov Raina Tzvetcova
7
1996–1997
No competition
No competition
No competition
No competition
No competition
8
1998
Konstantin Dobrev
Csilla Forian
Konstantin Dobrev Asparuch Nedkov
Diana Koleva Raina Tzvetkova
Konstantin Dobrev Diana Koleva
9
1999
Hidetaka Yamada
Maja Pohar
Manuel Dubruille Vincent Laigle
Diana Koleva Nely Nedjalkova
Andrej Pohar Maja Pohar
10
2000
Oliver Pongratz
Lonneke Janssen
Mathias Boe Michael Jensen
Britta Andersen Lene Mørk
Mathias Boe Britta Andersen
11
2001 2005
No competition
No competition
No competition
No competition
No competition
12
2006
Jan Vondra
Petya Nedelcheva
Vladimir Metodiev Stilian Makarski
Petya Nedelcheva Diana Dimova
Stilian Makarski Diana Dimova
13
2007
Sho Sasaki
Tracey Hallam
Kenichi Hayakawa Kenta Kazuno
Fiona Mckee Charmaine Reid
Valeriy Atrashchenkov Elena Prus
14
2008
Ville Lang
Hwang Hye-youn
Vladimir Metodiev Krasimir Yankov
Olga Golovanova Anastasia Prokopenko
Stilian Makarski Diana Dimova
15
2009
Dionysius Hayom Rumbaka
Petya Nedelcheva
Julian Hristov Vladimir Metodiev
Petya Nedelcheva Dimitria Popstoikova
Valeriy Atrashchenkov Elena Prus
16
2010
Yeoh Kay Bin
Hitomi Oka
Jürgen Koch Peter Zauner
Shinta Mulia Sari Yao Lei
Chayut Triyachart Yao Lei
17
2011
Koichi Saeki
Minatsu Mitani
Sam Magee Tony Stephenson
Alex Bruce Michelle Li
Sam Magee Chloe Magee
18
2012
Marcel Reuter
Kana Ito
Laurent Constantin Sebastien Vincent
Sandra-Maria Jensen Line Kjaersfeldt
Edi Subaktiar Melati Daeva Oktaviani
19
2013
Takuto Inoue
Beatriz Corrales
Takuto Inoue Yuki Kaneko
Irina Khlebko Ksenia Polikarpova
Choi Sol-kyu Kim Hye-rin

Questions and formulas:
Question: Who won the Women's singles in 2013?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1=2013),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F19,A2:A19=2013),3))
Level: medium
Question: Who won the Men's doubles when there was no competition in the Men's singles?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="no competition"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F19,B2:B19="no competition"),4))
Level: medium
Question: What year was there no competition in Mixed Doubles?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="no competition"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F19,F2:F19="no competition"),1))
Level: medium
Question: What year did Lonneke Janssen win the Women's singles?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="lonneke janssen"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F19,C2:C19="lonneke janssen"),1))
Level: medium