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Cosman, Jackson Robert

Standard: 1736 Rapid: 1687 Blitz: 1730 (last updated 2026-11-02)
FIDE ID: 6570542 (view FIDE profile)
Federation: CRC Sex: M Birth Year: 2012 Age: 14
Title: — Women's title: — Other title: — FOA title: —
Games: 8 Wins: 5 (63%) Draws: 0 (0%) Losses: 3 (38%)
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Dossier

4 of 8 games analyzed.

Accuracy: 82.5%
Opened d4: 2/2
Castled kingside: 3Same-side castling: 3Did not castle: 1
Played in the center: 2Played on the kingside: 2Fianchettoed queenside: 1
Isolated pawn: 3Kept the bishop pair: 3Active pieces: 3Initiated exchanges: 2Backward pawn: 2Space advantage: 1Sacrificed material: 1Avoided exchanges: 1Missed tactics: 1
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Openings

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As White 3 games 1W 0D 2L
Indian Defense 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Horwitz Defense 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
Dutch Defense 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
As Black 5 games 4W 0D 1L
Caro-Kann Defense 3 games 2W 0D 1L
Tartakower Variation 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified) 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Breyer Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
Dutch Defense 1 game 1W 0D 0L
Raphael Variation 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
English Opening 1 game 1W 0D 0L
King's English Variation 1 game 1W 0D 0L
Four Knights Variation, Flexible Line 1 game 1W 0D 0L
Blunders Top 4 of 23

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

2025.12.30 · 36. Qe5 (−51.5% win chance) 0-1
Buitrago Mosquera, Antonio
Cosman, Jackson Robert
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2025.12.28 · 30. Rc1 (−30% win chance) 0-1
Arauz Morales, Victor Ivan
Cosman, Jackson Robert
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2025.12.28 · 28. Bg5 (−27.5% win chance) 0-1
Arauz Morales, Victor Ivan
Cosman, Jackson Robert
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2025.12.30 · 14... c5 (−26.2% win chance) 1-0
Cosman, Jackson Robert
Angulo Perez, Sebastian
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View blunders & mistakes
Games Showing all 8 games
Date Event Round Color Opponent Result Accuracy % First moves