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Player profile

Thomas, Mark

Standard: 1887 Rapid: 1929 Blitz: 0 (last updated 2026-11-02)
FIDE ID: 1801791 (view FIDE profile)
Federation: WLS Sex: M Birth Year: 1955 Age: 71
Title: — Women's title: — Other title: — FOA title: —
Games: 32 Wins: 15 (47%) Draws: 7 (22%) Losses: 10 (31%)
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Dossier

28 of 32 games analyzed.

Accuracy: 86.2%
Opened e4: 14/14
Castled kingside: 26Same-side castling: 17Opposite-side castling: 3Did not castle: 2
Fianchettoed kingside: 16Played on the kingside: 11Played on the queenside: 7Fianchettoed queenside: 6Played in the center: 4
Sacrificed material: 24Active pieces: 22Kept the bishop pair: 21Initiated exchanges: 17Backward pawn: 17Missed tactics: 13Space advantage: 12Isolated pawn: 11Avoided exchanges: 6Played gambits: 2
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Openings

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As White 16 games 8W 3D 5L
Sicilian Defense 8 games 4W 2D 2L
Closed 4 games 3W 1D 0L
(unspecified) 3 games 2W 1D 0L
Traditional 1 game 1W 0D 0L
(unspecified) 2 games 0W 0D 2L
(unspecified) 2 games 0W 0D 2L
Grand Prix Attack 2 games 1W 1D 0L
(unspecified) 2 games 1W 1D 0L
Caro-Kann Defense 4 games 3W 1D 0L
Two Knights Attack 4 games 3W 1D 0L
(unspecified) 3 games 2W 1D 0L
Mindeno Variation, Exchange Line 1 game 1W 0D 0L
French Defense 2 games 0W 0D 2L
King's Indian Attack 2 games 0W 0D 2L
(unspecified) 2 games 0W 0D 2L
Modern Defense 1 game 0W 0D 1L
Standard Defense 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Ruy Lopez 1 game 1W 0D 0L
Schliemann Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
As Black 16 games 7W 4D 5L
King's Indian Defense 5 games 3W 1D 1L
Fianchetto Variation 2 games 2W 0D 0L
Panno Variation 1 game 1W 0D 0L
Yugoslav Variation, Exchange Line 1 game 1W 0D 0L
Kramer Variation 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Semi-Averbakh System 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Orthodox Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Modern Defense 4 games 1W 1D 2L
Standard Defense 3 games 0W 1D 2L
(unspecified) 3 games 0W 1D 2L
Two Knights Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Queen's Pawn Game 3 games 2W 1D 0L
Modern Defense 3 games 2W 1D 0L
(unspecified) 3 games 2W 1D 0L
English Opening 1 game 0W 0D 1L
Great Snake Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
London System, with Bd3 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Zukertort Opening 1 game 1W 0D 0L
Kingside Fianchetto 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
London System, with Be2 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
Blunders Top 4 of 174

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

2026.04.06 · 61. Ra1 (−83.9% win chance) 0-1
Tyrrell, Lachlan Baly Hughes
Thomas, Mark
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2025.07.04 · 35. Rxh8 (−64.8% win chance) 0-1
Richards, Joshua
Thomas, Mark
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2026.06.27 · 67. Ke3 (−47.5% win chance) 1/2-1/2
Hankey, Chris
Thomas, Mark
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2026.06.26 · 59... Bxe3 (−40.7% win chance) 1/2-1/2
Thomas, Mark
Herd, Ewan
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View blunders & mistakes
Games Showing all 32 games
Date Event Round Color Opponent Result Accuracy % First moves