Karel Treybal vs Rudolf Spielmann
Bad Sliac Sliac CSR 1932.06.??
Four Knights Game: Bardeleben Variation 1/2-1/2

Karel Treybal vs Walter Michel
Semmering Semmering AUT round 13 1926.03.24
Ruy Lopez: Morphy Defense, Anderssen Variation 1/2-1/2

Karen Asrian vs Viktor Antonovich Bologan
6th European Individual Championship Zegrze POL round 6 2005.06.23
Modern Defense 1-0

Karina Cyfka vs Klaudia Kulon
Polish Championship (Women) playoff Ostrow Wielkopolski POL round 2 2020.08.12
Indian Defense: Medusa Gambit 1-0

Karl Helling vs Karel Opocensky
Prague Olympiad Prague CSR round 9 1931.07.17
Nimzo-Larsen Attack: Classical Variation 1/2-1/2

Karl Pitschel vs Henry William Birkmyre Gifford
Paris Paris FRA round 18 1878.07.16
Italian Game: Classical Variation, Greco Gambit, Greco Variation 1/2-1/2

Karlis Alexander Ozols vs Voldemar Mezgailis
Olympic Selection Riga LAT 1936.??.??
Réti Opening: Anglo-Slav Variation, Bled Variation 0-1

Karlis Knauts vs Janis Tontegode
corr Correspondence 1912.??.??
King’s Gambit Declined: Falkbeer Countergambit 0-1

Karol Pinkas vs Gizelak
POL POL 1973.??.??
Vienna Game: Heyde Variation 1-0

Karoly Sterk vs Miroslav Chodera
Bardejov Bardejov CZE round 5 1926.07.25
English Opening: Anglo-Grünfeld Defense 1/2-1/2