United StatesUSA
ID: 2015862

Jaco Koster

FIDE ratings

2,074Classical

Performance

30 games
40% Win
20% Draw
40% Loss

Jaco Koster's playing style

Overall score:50%12W 6D 12L over 30 games
Steady recent form:50%8W 4D 8L in last 20 games

Openings as White

Among the openings shown, Ruy Lopez: Morphy Defense, Tartakower Variation has the largest White sample, with 2 games. Select a row to explore its moves and inspect example games below.

Ruy Lopez: Morphy Defense, Tartakower Variation
100%
2g
Czech Defense
100%
2g
French Defense: Tarrasch Variation, Chistyakov Defense
100%
2g
Sicilian Defense: Nimzowitsch Variation, Closed Variation
100%
2g
French Defense: Tarrasch Variation, Closed Variation
100%
2g

Openings as Black

Among the openings shown, Indian Defense: Knights Variation has the largest Black sample, with 2 games. These results describe the available sample, not a prediction of the player’s next choice.

Indian Defense: Knights Variation
100%
2g
Indian Defense: Normal Variation
100%
2g
London System
100%
2g
Slav Defense
100%
2g

Repertoire

16 games as white in scope
8
7
6
5
4
3
2
a1
b
c
d
e
f
g
h
Move arrowsfrequency, not engine evaluation

Starting position

16 games in this line · White to move

Results for Koster, Jaco as white · Wins / Draws / Losses

W / D / L
38%
25%
38%
Move
14 · 88%
43%
29%
29%
2 · 13%
100%

Game History

(30 games)
DateSourceColorOpponentResultLink
Apr 20, 2003
OTB - Codekiddy
Webster, Richard J(2031)
W—
Apr 20, 2003
OTB - Britbase
Hallasi Penaloza, Nicolas Jair(1318)
L—
Apr 20, 2003
OTB - Codekiddy
Webster, Richard J(2031)
W—
Apr 20, 2003
OTB - Codekiddy
Harkins Jr, James L(2063)
L—
Apr 19, 2003
OTB - Codekiddy
Nelson, Omowale(2085)
L—
Apr 19, 2003
OTB - Codekiddy
Evans, Helen I(1622)
W—
Apr 19, 2003
OTB - Codekiddy
Evans, Helen I(1622)
W—
Apr 19, 2003
OTB - Codekiddy
Nelson, Omowale(2069)
L—
Apr 18, 2003
OTB - Codekiddy
Seidel, Juergen(2024)
W—
Apr 18, 2003
OTB - Codekiddy
CMLedger, Stephen C(2199)
L—

Research Jaco Koster’s games and opening repertoire

Jaco Koster is rated 2074 in standard by FIDE. Jaco Koster plays for United States.

Jaco Koster has FIDE ID 2015862.

Check the official FIDE record for ratings and identity. It is not a complete archive of game moves.

Use the openings as White and Black to identify recurring choices in the available games. Follow a branch into the repertoire explorer and inspect example games in the game history. Dates, time controls and sources affect which patterns are relevant to your next match.

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