Player profile

Cox, Jonas

Standard: 1750 Rapid: 0 Blitz: 0 (last updated 2026-10-02)

FIDE ID: 533044295 (view FIDE profile)

Federation: GER Sex: M Birth Year: 1998 Age: 28

Title: — Women's title: — Other title: — FOA title: —

Games: 11 Wins: 1 (9%) Draws: 2 (18%) Losses: 6 (55%) Other: 2

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Dossier

9 of 11 games analyzed.

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Openings

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As White 5 games 1W 1D 2L

English Opening 5 games 1W 1D 2L

Symmetrical Variation 2 games 1W 1D 0L

Normal Variation 1 game 0W 1D 0L

Ultra-Symmetrical Variation 1 game 1W 0D 0L

(unspecified) 1 game 0W 0D 1L

Agincourt Defense 1 game 0W 0D 0L

(unspecified) 1 game 0W 0D 0L

King's English Variation 1 game 0W 0D 1L

Kramnik-Shirov Counterattack 1 game 0W 0D 1L

As Black 6 games 0W 1D 4L

Sicilian Defense 3 games 0W 0D 2L

Alapin Variation 3 games 0W 0D 2L

Barmen Defense 2 games 0W 0D 2L

Smith-Morra Declined 1 game 0W 0D 0L

Queen's Gambit Accepted 1 game 0W 0D 1L

Janowski-Larsen Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Queen's Pawn Game 1 game 0W 1D 0L

Chigorin Variation 1 game 0W 1D 0L

Alburt Defense 1 game 0W 1D 0L

Saragossa Opening 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Blunders Top 4 of 58

This player's costliest moves in analyzed games. Can you find the winning move?

2025.12.28 · 29. Rc5 (−55.3% win chance) 1-0

Beyens, Lander

Cox, Jonas

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2025.12.30 · 29. Qf6 (−36.3% win chance) 1/2-1/2

Kammann, Thomas

Cox, Jonas

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2025.06.08 · 27... Qf5 (−28.5% win chance) 1-0

Cox, Jonas

Rummelshaus, Heinz

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2025.12.27 · 20... f6 (−27.4% win chance) 1/2-1/2

Cox, Jonas

Katz, Rafael

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Games Showing all 11 games

Date	Event	Round	Opponent	Result	Accuracy %	First moves
2025.12.30	Round 7: Kirchner, Emil - Cox, Jonas	7.33	2025.12.30 Kirchner, Emil (34638113) (1852)	0	84.50%	1. e4 c5 2. c3 d5 3. exd5 Qxd5
2025.12.30	Round 6: Cox, Jonas - Kammann, Thomas	6.35	2025.12.30 Kammann, Thomas (24655996) (1788)	½	82.80%	1. c4 c5 2. Nc3 Nf6 3. e4 e5
2025.12.29	Round 5: Zander, Vincent - Cox, Jonas	5.23	2025.12.29 Zander, Vincent (34653856) (1895)	0	94.20%	1. d4 d5 2. c4 dxc4 3. Nf3 Nf6
2025.12.29	Round 4: Cox, Jonas - Pfaar, Zeno	4.8	2025.12.29 Pfaar, Zeno (34614567) (2077)	0	92.30%	1. c4 b6 2. Nc3 e6 3. e4 Bb7
2025.12.28	Round 3: Hepting, Frank - Cox, Jonas	3.19	2025.12.28 Hepting, Frank (16277112) (1898)	*	-	1. e4 c5 2. d4 cxd4 3. c3 Nf6
2025.12.28	Round 2: Cox, Jonas - Beyens, Lander	2.35	2025.12.28 Beyens, Lander (548005347)	1	68.30%	1. c4 c5 2. Nc3 Nc6 3. g3 g6
2025.12.27	Round 1: Katz, Rafael - Cox, Jonas	1.14	2025.12.27 Katz, Rafael (16213084) (2112)	½	79.50%	1. d4 d5 2. Nc3 Bf5 3. Bf4 e6
2025.06.09	Round 6: Fedorenko, Tatyana - Cox, Jonas	6.40	2025.06.09 Fedorenko, Tatyana (34695508) (1825)	0	82.60%	1. e4 c5 2. c3 d5 3. exd5 Qxd5
2025.06.08	Round 4: Rummelshaus, Heinz - Cox, Jonas	4.36	2025.06.08 Rummelshaus, Heinz (24627488) (1887)	0	80.70%	1. c3 Nf6 2. Nf3 d5 3. g3 c5
2025.06.07	Round 3: Cox, Jonas - Schuller, Bernd	3.32	2025.06.07 Schuller, Bernd (220728) (1882)	*	-	1. c4 e6 2. Nc3 b6 3. e4 Bb7
2025.06.06	Round 1: Cox, Jonas - Wilde, Justin	1.22	2025.06.06 Wilde, Justin (16236033) (2033)	0	87.10%	1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3