Jan Sosna

Country

CZE

Birth Year

1960

Gender

M

Title

International Master

FIDE ID

304379

FIDE ratings

2283

Classical

Published FIDE

2300

Rapid

Published FIDE

2425

Blitz

Published FIDE

Official classical ranks

World rank
#4654
National rank · CZE
#116

Active players · Oct 2026 FIDE list ⓘ

Rating history

Highest recorded rating
2441 Oct 2003
Recorded years
2001–2026
Archived games
169

Based on available monthly lists and saved games.

FIDE rating history

Published rating lists through Oct 2026.

View rating lists
Available Games

Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-10-07 (UTC).

# Date Event Site Round White Black Result Moves View
51 2018-12-02 TCh-CZE Extraliga 2018-19 Czech Republic CZE 4.3 Jan Sosna Petr Pisk 1/2-1/2 63 Open
52 2018-12-01 TCh-CZE Extraliga 2018-19 Czech Republic CZE 3.4 Jan Sosna Roman Chytilek 1/2-1/2 13 Open
53 2018-11-25 TCh-CZE 1 Liga Vychod Czech Republic CZE 3.3 Jan Sosna Karol Motuz 1-0 26 Open
54 2018-11-11 TCh-CZE 1 Liga Vychod Czech Republic CZE 2.2 Jan Sosna Jiri Musil 0-1 32 Open
55 2018-11-04 TCh-CZE Extraliga 2018-19 Czech Republic CZE 2.6 Jan Sosna Tadeas Kriebel 0-1 36 Open
56 2018-07-11 43rd Vsetin Open 2016 Vsetin CZE 9.1 1600575 Jan Sosna 1/2-1/2 5 Open
57 2018-07-10 43rd Vsetin Open 2016 Vsetin CZE 8.3 Jan Sosna Julian Kersten 1-0 45 Open
58 2018-07-09 43rd Vsetin Open 2016 Vsetin CZE 7.1 Tomas Vojta Jan Sosna 1/2-1/2 29 Open
59 2018-07-08 43rd Vsetin Open 2016 Vsetin CZE 6.2 Jan Sosna Kamil Koziol 1/2-1/2 17 Open
60 2018-07-07 43rd Vsetin Open 2016 Vsetin CZE 5.1 Jan Sosna Stanislav Jasny 1/2-1/2 8 Open
61 2018-07-06 43rd Vsetin Open 2016 Vsetin CZE 4.1 Ondrej Havelka Jan Sosna 1/2-1/2 17 Open
62 2018-07-06 43rd Vsetin Open 2016 Vsetin CZE 3.2 Jan Sosna Petr Kapusta 1-0 40 Open
63 2018-07-05 43rd Vsetin Open 2016 Vsetin CZE 2.3 Marvin Engert Jan Sosna 0-1 49 Open
64 2018-07-04 43rd Vsetin Open 2016 Vsetin CZE 1.3 Jan Sosna Kenji Hiebert 1-0 57 Open
65 2018-04-15 TCh-CZE 1 Liga Vychod Czech Republic CZE 11.1 Zdenek Ramik Jan Sosna 1/2-1/2 8 Open
66 2018-04-08 TCh-CZE Extraliga 2017-18 Czech Republic CZE 11.2 Jakub Rabatin Jan Sosna 1/2-1/2 60 Open
67 2018-04-07 TCh-CZE Extraliga 2017-18 Czech Republic CZE 10.1 Jan Sosna Petr Mohapl 1-0 30 Open
68 2018-04-06 TCh-CZE Extraliga 2017-18 Czech Republic CZE 9.6 Richard Biolek Jan Sosna 1/2-1/2 48 Open
69 2018-02-11 TCh-CZE Extraliga 2017-18 Czech Republic CZE 8.2 Radek Sluka Jan Sosna 1/2-1/2 74 Open
70 2018-02-10 TCh-CZE Extraliga 2017-18 Czech Republic CZE 7.1 Jakub Roubalik Jan Sosna 0-1 42 Open
71 2018-02-04 TCh-CZE 1 Liga Vychod Czech Republic CZE 7.3 Jan Sosna Alois Lanc 1-0 35 Open
72 2018-01-21 TCh-CZE 1 Liga Vychod Czech Republic CZE 6.4 Marek Nabelek Jan Sosna 0-1 32 Open
73 2018-01-14 TCh-CZE Extraliga 2017-18 Czech Republic CZE 6.1 Jan Sosna Eduard Meduna 1/2-1/2 25 Open
74 2018-01-07 TCh-CZE 1 Liga Vychod Czech Republic CZE 5.4 Roman Chytilek Jan Sosna 1/2-1/2 27 Open
75 2017-12-10 TCh-CZE 1 Liga Vychod Czech Republic CZE 4.3 Richard Jr. Biolek Jan Sosna 1-0 38 Open
76 2017-11-26 TCh-CZE 1 Liga Vychod Czech Republic CZE 3.5 Vojtech Zwardon Jan Sosna 1-0 36 Open
77 2017-11-12 TCh-CZE 1 Liga Vychod Czech Republic CZE 2.2 Jan Sosna Jakub Rabatin 1-0 96 Open
78 2017-10-22 TCh-CZE 1 Liga Vychod Czech Republic CZE 1.6 Kamil Koziol Jan Sosna 1/2-1/2 16 Open
79 2017-04-09 TCh-CZE 1 Liga Vychod Czech Republic CZE 11.1 Alois Lanc Jan Sosna 1-0 37 Open
80 2017-03-31 TCh-CZE Extraliga 2016-17 Czech Republic CZE 9.6 Vladimir Talla Jan Sosna 1/2-1/2 16 Open
81 2017-03-26 TCh-CZE 1 Liga Vychod Czech Republic CZE 10.1 Jan Malik Jan Sosna 1/2-1/2 11 Open
82 2017-03-05 TCh-CZE 1 Liga Vychod Czech Republic CZE 9.1 Jakub Zeberski Jan Sosna 1-0 27 Open
83 2017-02-26 TCh-CZE Extraliga 2016-17 Czech Republic CZE 8.2 Petr Haba Jan Sosna 1/2-1/2 20 Open
84 2017-02-25 TCh-CZE Extraliga 2016-17 Czech Republic CZE 7.1 Jan Sosna Petr Simek 0-1 25 Open
85 2017-02-19 TCh-CZE 1 Liga Vychod Czech Republic CZE 8.1 Stanislav Jasny Jan Sosna 1/2-1/2 27 Open
86 2017-02-05 TCh-CZE 1 Liga Vychod Czech Republic CZE 7.1 Vladimir Vojtek Jan Sosna 1/2-1/2 39 Open
87 2017-01-29 TCh-CZE Extraliga 2016-17 Czech Republic CZE 6.1 Jan Sosna Eva Kulovana 1-0 41 Open
88 2017-01-28 TCh-CZE Extraliga 2016-17 Czech Republic CZE 5.1 Roman Chytilek Jan Sosna 1/2-1/2 36 Open
89 2017-01-22 TCh-CZE 1 Liga Vychod Czech Republic CZE 6.1 Jan Sosna Vlastimil Piza 1/2-1/2 50 Open
90 2017-01-08 TCh-CZE 1 Liga Vychod Czech Republic CZE 5.1 Ladislav Langner Jan Sosna 0-1 34 Open
91 2016-12-04 TCh-CZE 1 Liga Vychod Czech Republic CZE 4.1 Jan Sosna Martin Bures 1-0 42 Open
92 2016-11-20 TCh-CZE 1 Liga Vychod Czech Republic CZE 3.1 Jan Sosna Pavel Blatny 0-1 44 Open
93 2016-11-06 TCh-CZE 1 Liga Vychod Czech Republic CZE 2.1 Jan Sosna Richard Biolek 1-0 66 Open
94 2016-10-16 TCh-CZE 1 Liga Vychod Czech Republic CZE 1.1 Jan Sosna Radomir Caletka 0-1 35 Open
95 2016-04-17 TCh-CZE Extraliga 2015-16 Czech Republic CZE 11.4 Martin Frolik Jan Sosna 1/2-1/2 23 Open
96 2016-04-16 TCh-CZE Extraliga 2015-16 Czech Republic CZE 10.4 Jan Sosna Serguei Vesselovsky 1/2-1/2 14 Open
97 2016-04-10 TCh-CZE 1 Liga Vychod Czech Republic CZE 11.2 Jan Sosna Serguei Vesselovsky 1/2-1/2 47 Open
98 2016-03-20 TCh-CZE 1 Liga Vychod Czech Republic CZE 10.3 Jan Sosna Alois Lanc 1-0 35 Open
99 2016-02-28 TCh-CZE 1 Liga Vychod Czech Republic CZE 9.2 Jan Sosna David Kanovsky 1/2-1/2 43 Open
100 2016-01-31 TCh-CZE 1 Liga Vychod Czech Republic CZE 7.3 Jan Sosna Jiri Adamek 1/2-1/2 38 Open

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