Player profile

Hackner, Claes M

Standard: 1570 Rapid: 1432 Blitz: 0 (last updated 2026-10-02)

FIDE ID: 435899 (view FIDE profile)

Federation: ENG Sex: M Birth Year: 1957 Age: 69

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

Games: 9 Wins: 2 (22%) Draws: 1 (11%) Losses: 6 (67%)

View all games

Dossier

9 of 9 games analyzed.

View full dossier

Openings

Click "+" to add that group to the games list below. Multiple groups can be added at once.

As White 3 games 1W 1D 1L

Queen's Gambit Declined 2 games 1W 0D 1L

Three Knights Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Marshall Defense 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

King's Indian Defense 1 game 0W 1D 0L

Zinnowitz Variation 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

As Black 5 games 1W 0D 4L

French Defense 3 games 1W 0D 2L

Horwitz Attack 2 games 1W 0D 1L

Papa-Ticulat Gambit 2 games 1W 0D 1L

Tarrasch Variation 1 game 0W 0D 1L

Closed Variation, Main Line 1 game 0W 0D 1L

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

London System 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

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

Exchange Variation 1 game 0W 0D 1L

Positional Variation 1 game 0W 0D 1L

Blunders Top 4 of 59

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

2026.04.18 · 29. Ra1 (−39.2% win chance) 1/2-1/2

Orlowski, Igor

Hackner, Claes M

Engine View game

2026.04.16 · 25. Bxg3 (−35.7% win chance) 0-1

Jurczyk, Mateusz

Hackner, Claes M

Engine View game

2026.04.13 · 28... Qe7 (−34.1% win chance) 1-0

Hackner, Claes M

Zyworonek, Jacob

Engine View game

2026.04.16 · 20. Ng5 (−33% win chance) 0-1

Jurczyk, Mateusz

Hackner, Claes M

Engine View game

View blunders & mistakes

Games Showing all 9 games

Date	Event	Round	Opponent	Result	Accuracy %	First moves
2026.04.19	MPA U1600	9.39	2026.04.19 Wisniewski, Damian (-)	1	92.40%	1. e4 e6 2. b3 d5 3. Bb2 dxe4
2026.04.18	MPA U1600	8.41	2026.04.18 Orlowski, Igor (545080151)	½	77.30%	1. d4 d6 2. c4 Nf6 3. Nc3 g6
2026.04.17	MPA U1600	7.33	2026.04.17 Sosnowski, Michal (41889258) (1567)	0	81.10%	1. e4 e6 2. d4 d5 3. Nd2 Nf6
2026.04.16	MPA U1600	6.32	2026.04.16 Jurczyk, Mateusz (545080097)	0	83.30%	1. d4 d5 2. c4 e6 3. e3 Nf6
2026.04.14	MPA U1600	5.27	2026.04.14 Szerffel, Mateusz (21804486)	0	88.50%	1. d4 d5 2. Bf4 e6 3. Nf3 c5
2026.04.13	MPA U1600	3.31	2026.04.13 Zyworonek, Jacob (545080186)	0	75.20%	1. e4 e6 2. b3 d5 3. Bb2 dxe4
2026.04.12	MPA U1600	2.40	2026.04.12 Piasta, Jan (91175453)	1	89.50%	1. d4 d5 2. c4 Nf6 3. e3 e6
2026.04.10	MPA U1600	1.1	2026.04.10 Guss, Hubert (91108403) (1599)	0	91.30%	1. d4 d5 2. c4 e6 3. Nc3 Nf6
	61. Miedzynarodowy Festiwal Szachowy im. Akiby Rubinsteina - OPEN D	1.35	Zawadzki, Antoni (41835042) (1665)	0	90.40%	1. d4 d5 2. c4 e6 3. g3 Nf6