ChessmooseOpponent prep

IMAaron Jacobson

USA · FIDE ID 2089912 · 223 tournament games since 2021
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Standard
2374
#106 in USA (active)
Rapid
2357
#78 in USA (active)
Blitz
2302
#114 in USA (active)
Score
50%
74 W · 74 D · 75 L
Opp. avg
2316
Last 50 games
Last game
2026-09-12
41º. Open Ezkerraldea Basque Country - 34º Magistral Internacional de Euskadi

Prep summary

Based on 223 over-the-board games (52 classical). 112 with White (53%), 111 with Black (46%).

Openings as White

First move

1.d45548%
1.e42855%
1.c42068%
1.Nf3944%

Most played

OpeningGamesScore
Queen's Gambit Declined: Ragozin Defense, Alekhine Variation850%
Queen's Gambit Declined550%
Sicilian Defense: Najdorf Variation450%
Queen's Gambit Declined: Three Knights Variation475%
Queen's Gambit Accepted333%

Openings as Black

Against 1.e4 (52 games)

1...e5 King's Pawn Game2442%
1...e6 French Defense1825%
1...c5 Sicilian Defense786%

Against 1.d4 (34 games)

1...Nf6 Indian Defense1942%
1...e6 Horwitz Defense881%
1...d5 Queen's Pawn Game736%

Most played

OpeningGamesScore
Catalan Opening: Open Defense, Classical Line633%
Ruy Lopez: Morphy Defense, Modern Steinitz Defense550%
French Defense: Steinitz Variation, Boleslavsky Variation510%
French Defense: Tarrasch Variation, Chistyakov Defense520%
King's Indian Attack, with e6463%

Recent games

DateOpponent and eventResult
2026-09-12Eduardo Iturrizaga Bonelli (2595)
41º. Open Ezkerraldea Basque Country - 34º Magistral Internacional de Euskadi · classical
W
2026-09-08Patryk Cieslak (2498)
41º. Open Ezkerraldea Basque Country - 34º Magistral Internacional de Euskadi · classical
½
2026-08-24Bagwe Gaurang (2240)
32nd Abu Dhabi International Chess Festival 2026 · classical
L
2026-08-23Ankit Ray (2257)
32nd Abu Dhabi International Chess Festival 2026 · classical
W
2026-08-22Leonid Efimov (2311)
32nd Abu Dhabi International Chess Festival 2026 · classical
½
2026-08-21Shubh Atha (2300)
32nd Abu Dhabi International Chess Festival 2026 · classical
½
2026-08-19Zarina Nurgaliyeva (2302)
32nd Abu Dhabi International Chess Festival 2026 · classical
½
2026-08-18Aram Chekh Adm Khedr (2137)
32nd Abu Dhabi International Chess Festival 2026 · classical
L
2026-08-17Ivan Zemlyanskii (2569)
32nd Abu Dhabi International Chess Festival 2026 · classical
½
2026-08-16Allen Hakobyan (2279)
32nd Abu Dhabi International Chess Festival 2026 · classical
W

Data: FIDE rating list (October 2026 list; national ranks count active players) and tournament games broadcast on Lichess since 2020 (open data, CC0). Results are matched to FIDE players by name or FIDE ID and may be incomplete. This page shows public chess results only. Is this you and you want the page removed? Email chessmoose1@gmail.com and we remove it.