Player profile

Jacobson, Aaron

Standard: 2374 Rapid: 2357 Blitz: 2302 (last updated 2026-11-02)

FIDE ID: 2089912 (view FIDE profile)

Federation: USA Sex: M Birth Year: 1999 Age: 27

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

Games: 170 Wins: 63 (37%) Draws: 55 (32%) Losses: 52 (31%)

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Dossier

169 of 170 games analyzed.

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Openings

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As White 50 games 22W 14D 14L

Queen's Gambit Declined 11 games 5W 2D 4L

Ragozin Defense 4 games 2W 2D 0L

Alekhine Variation 4 games 2W 2D 0L

(unspecified) 2 games 1W 0D 1L

Three Knights Variation 2 games 1W 0D 1L

(unspecified) 2 games 1W 0D 1L

Modern Variation 1 game 0W 0D 1L

Normal Line 1 game 0W 0D 1L

Neo-Orthodox Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Barmen Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Sicilian Defense 9 games 4W 3D 2L

Delayed Alapin Variation 2 games 2W 0D 0L

with d6 1 game 1W 0D 0L

with e6 1 game 1W 0D 0L

Modern Variations 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Scheveningen Variation 1 game 1W 0D 0L

Keres Attack 1 game 1W 0D 0L

Nyezhmetdinov-Rossolimo Attack 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Kan Variation 1 game 1W 0D 0L

Knight Variation 1 game 1W 0D 0L

Najdorf Variation 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Taimanov Variation 1 game 0W 1D 0L

Bastrikov Variation, English Attack 1 game 0W 1D 0L

O'Kelly Variation 1 game 0W 0D 1L

Venice System 1 game 0W 0D 1L

English Opening 6 games 3W 2D 1L

Anglo-Indian Defense 2 games 1W 1D 0L

King's Knight Variation 2 games 1W 1D 0L

Symmetrical Variation 2 games 1W 1D 0L

Four Knights Variation 1 game 0W 1D 0L

(unspecified) 1 game 1W 0D 0L

(unspecified) 1 game 0W 0D 1L

Agincourt Defense 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

King's Indian Defense 6 games 2W 1D 3L

Normal Variation 3 games 1W 1D 1L

Rare Defenses 3 games 1W 1D 1L

Orthodox Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Makogonov Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Four Pawns Attack 1 game 1W 0D 0L

Normal Attack 1 game 1W 0D 0L

French Defense 3 games 3W 0D 0L

Classical Variation 3 games 3W 0D 0L

Shirov-Anand Variation 3 games 3W 0D 0L

Queen's Gambit Accepted 2 games 0W 2D 0L

(unspecified) 1 game 0W 1D 0L

Gunsberg Defense 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Tarrasch Defense 2 games 0W 2D 0L

Symmetrical Variation 2 games 0W 2D 0L

(unspecified) 2 games 0W 2D 0L

Queen's Indian Defense 2 games 1W 0D 1L

Fianchetto Variation 2 games 1W 0D 1L

Nimzowitsch Variation 1 game 1W 0D 0L

Kramnik Variation 1 game 0W 0D 1L

Réti Opening 2 games 1W 0D 1L

Anglo-Slav Variation 2 games 1W 0D 1L

Gurevich System 2 games 1W 0D 1L

Four Knights Game 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Nimzo-Indian Defense 1 game 0W 1D 0L

Classical Variation 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

King's Gambit Accepted 1 game 1W 0D 0L

Modern Defense 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Pterodactyl Defense 1 game 1W 0D 0L

Central 1 game 1W 0D 0L

Bogolubovia 1 game 1W 0D 0L

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

Krause Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Queen's Indian Accelerated 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Caro-Kann Defense 1 game 0W 0D 1L

Classical Variation 1 game 0W 0D 1L

Lobron System 1 game 0W 0D 1L

As Black 45 games 15W 14D 16L

Ruy Lopez 8 games 3W 1D 4L

Morphy Defense 4 games 3W 0D 1L

Modern Steinitz Defense 3 games 2W 0D 1L

Schliemann Defense Deferred 1 game 1W 0D 0L

Schliemann Defense 3 games 0W 1D 2L

(unspecified) 3 games 0W 1D 2L

Classical Variation 1 game 0W 0D 1L

Modern Main Line 1 game 0W 0D 1L

Queen's Gambit Declined 5 games 1W 3D 1L

Barmen Variation 3 games 0W 2D 1L

(unspecified) 3 games 0W 2D 1L

Albin Countergambit 1 game 0W 1D 0L

Normal Line 1 game 0W 1D 0L

Three Knights Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

English Opening 3 games 1W 1D 1L

Agincourt Defense 1 game 1W 0D 0L

Neo-Catalan Declined 1 game 1W 0D 0L

King's English Variation 1 game 0W 1D 0L

Four Knights Variation, Fianchetto Line 1 game 0W 1D 0L

Four Knights System 1 game 0W 0D 1L

Nimzowitsch Variation 1 game 0W 0D 1L

Sicilian Defense 3 games 3W 0D 0L

Najdorf Variation 1 game 1W 0D 0L

Adams Attack 1 game 1W 0D 0L

Classical Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Closed 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Indian Defense 3 games 0W 1D 2L

Anti-Nimzo-Indian 2 games 0W 1D 1L

(unspecified) 2 games 0W 1D 1L

Accelerated London System 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

King's Indian Attack 3 games 1W 2D 0L

Sicilian Variation 2 games 1W 1D 0L

(unspecified) 2 games 1W 1D 0L

Pachman System 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

English Defense 3 games 2W 1D 0L

(unspecified) 2 games 1W 1D 0L

Perrin Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

King's Indian Attack, with e6 2 games 1W 1D 0L

(unspecified) 2 games 1W 1D 0L

Four Knights Game 2 games 1W 0D 1L

Spanish Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Scotch Variation 1 game 1W 0D 0L

Belgrade Gambit 1 game 1W 0D 0L

Queen's Pawn Game 2 games 0W 1D 1L

London System 2 games 0W 1D 1L

(unspecified) 2 games 0W 1D 1L

Petrov's Defense 2 games 0W 0D 2L

Classical Attack 1 game 0W 0D 1L

Staunton Variation 1 game 0W 0D 1L

Nimzowitsch Attack 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Réti Opening 1 game 0W 1D 0L

Reversed Blumenfeld Gambit 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Italian Game 1 game 0W 1D 0L

Classical Variation 1 game 0W 1D 0L

Giuoco Pianissimo, with a6 1 game 0W 1D 0L

Benko Gambit 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

French Defense 1 game 0W 0D 1L

Classical Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

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

Spassky System 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Zukertort Opening 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Catalan Opening 1 game 0W 0D 1L

Open Defense 1 game 0W 0D 1L

Classical Line 1 game 0W 0D 1L

Caro-Kann Defense 1 game 0W 0D 1L

Two Knights Attack 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Scotch Game 1 game 1W 0D 0L

Schmidt Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Blunders Top 4 of 591

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

2024.04.04 · 42... Kh7 (−72.7% win chance) 1-0

Jacobson, Aaron

Albornoz Cabrera, Carlos Daniel

Engine View game

2025.02.13 · 15. Rg5 (−70.3% win chance) 1/2-1/2

Nagy, Gabor

Jacobson, Aaron

Engine View game

2023.03.18 · 23... Bxb7 (−55.9% win chance) 1-0

Aaron Jacobson

John Burke

Engine View game

2024.12.15 · 21... Re7 (−51.1% win chance) 0-1

Jacobson, Aaron

Colwell, Andrew

Engine View game

View blunders & mistakes

Games Showing all 170 games

Date	Event	Round	Opponent	Result	Accuracy %	First moves
2026.09.12	Round 8: Iturrizaga Bonelli, Eduardo - Jacobson, Aaron	8.6	2026.09.12 Iturrizaga Bonelli, Eduardo (3901211) (2595)	1	95.00%	1. Nf3 d5 2. g3 Nf6 3. Bg2 e6
2026.09.08	Round 9: Jacobson, Aaron - Cieslak, Patryk	9.1	2026.09.08 Cieslak, Patryk (21078882) (2498)	½	97.10%	1. Nf3 Nf6 2. c4 e6 3. e3 d5
2026.08.24	Round 9: Jacobson, Aaron - Bagwe Gaurang	9.28	2026.08.24 Bagwe Gaurang (45039895) (2240)	0	85.60%	1. d4 d5 2. c4 e6 3. Nc3 Nf6
2026.08.23	Round 8: Ankit Ray - Jacobson, Aaron	8.35	2026.08.23 Ankit Ray (25770624) (2257)	1	92.50%	1. Nf3 d5 2. g3 Nf6 3. Bg2 e6
2026.08.22	Round 7: Jacobson, Aaron - Efimov, Leonid	7.39	2026.08.22 Efimov, Leonid (54165725) (2311)	½	93.70%	1. c4 e6 2. Nc3 Nf6 3. Nf3 d5
2026.08.21	Round 6: Shubh Atha - Jacobson, Aaron	6.37	2026.08.21 Shubh Atha (33397490) (2300)	½	89.00%	1. Nf3 d5 2. e3 c5 3. c4 d4
2026.08.19	Round 5: Jacobson, Aaron - Nurgaliyeva, Zarina	5.34	2026.08.19 Nurgaliyeva, Zarina (13730096) (2302)	½	80.10%	1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6
2026.08.18	Round 4: Chekh Adm Khedr,Aram - Jacobson, Aaron	4.33	2026.08.18 Chekh Adm Khedr,Aram (7601948) (2137)	0	83.80%	1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6
2026.08.17	Round 3: Jacobson, Aaron - Zemlyanskii, Ivan	3.20	2026.08.17 Zemlyanskii, Ivan (24249971) (2569)	½	95.60%	1. d4 Nf6 2. c4 e6 3. Nc3 Bb4
2026.08.16	Round 2: Hakobyan, Allen - Jacobson, Aaron	2.42	2026.08.16 Hakobyan, Allen (60900067) (2279)	1	94.20%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2026.08.15	Round 1: Jacobson, Aaron - Pranav Anand	1.5	2026.08.15 Pranav Anand (46626786) (2584)	0	90.30%	1. e4 c5 2. Nf3 d6 3. Nc3 a6
2026.05.06	Round 5: Jacobson, Aaron - Saric, Ivan	5.14	2026.05.06 Saric, Ivan (14508150) (2657)	0	90.90%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2026.05.05	Round 3: Lalit Babu M R - Jacobson, Aaron	3.16	2026.05.05 Lalit Babu M R (5024595) (2532)	½	97.30%	1. d4 d5 2. c4 e5 3. dxe5 d4
2026.05.04	Round 2: Jacobson, Aaron - Aditya Mittal	2.6	2026.05.04 Aditya Mittal (35042025) (2619)	½	91.90%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2026.01.23	Round 9: Jacobson, Aaron - Fawzy, Adham	9.9	2026.01.23 Fawzy, Adham (10613129) (2462)	½	82.20%	1. c4 c5 2. Nf3 Nc6 3. Nc3 Nf6
2026.01.22	Round 8: Risteski, Emil - Jacobson, Aaron	8.9	2026.01.22 Risteski, Emil (15005267) (2406)	½	92.80%	1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6
2026.01.21	Round 7: Jacobson, Aaron - Moradi, Behrooz	7.14	2026.01.21 Moradi, Behrooz (12500844) (2145)	1	93.70%	1. e4 c5 2. Nf3 e6 3. d4 cxd4
2026.01.20	Round 6: Suleymenov, Alisher - Jacobson, Aaron	6.8	2026.01.20 Suleymenov, Alisher (13707833) (2505)	0	85.70%	1. d4 Nf6 2. c4 c5 3. d5 b5
2026.01.18	Round 5: Jacobson, Aaron - Shivika Rohilla	5.14	2026.01.18 Shivika Rohilla (45015414) (2040)	1	99.00%	1. c4 Nf6 2. Nf3 e6 3. Nc3 d5
2026.01.17	Round 4: Samimi, Armin - Jacobson, Aaron	4.18	2026.01.17 Samimi, Armin (42524164) (2059)	1	97.70%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.01.17	Round 3: Salim Mohammed, Salim Al Amri - Jacobson, Aaron	3.28	2026.01.17 Salim Mohammed, Salim Al Amri (22000089) (2023)	1	93.00%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.01.16	Round 2: Jacobson, Aaron - Samarth Sreeni Warrier	2.21	2026.01.16 Samarth Sreeni Warrier (33312982) (2055)	½	91.70%	1. Nf3 Nf6 2. c4 e6 3. Nc3 d5
2026.01.15	Round 1: Jacobson, Aaron - Roshantab, Sadra	1.22	2026.01.15 Roshantab, Sadra (36792934) (2031)	0	86.30%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2025.11.05	Round 5: Stoettner, Lukas - Jacobson, Aaron	5.22	2025.11.05 Stoettner, Lukas (16289951) (2227)	0	86.50%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2025.11.04	Round 4: Jacobson, Aaron - Horvath, Dominik	4.13	2025.11.04 Horvath, Dominik (1642561) (2541)	½	-	1. e4 c5 2. Nf3 Nc6 3. Bb5 d6
2025.11.03	Round 3: Sasikiran, Krishnan - Jacobson, Aaron	3.7	2025.11.03 Sasikiran, Krishnan (5004985) (2535)	½	95.30%	1. Nf3 d5 2. g3 Nf6 3. Bg2 e6
2025.11.02	Round 2: Jacobson, Aaron - Schneider, Bernd	2.34	2025.11.02 Schneider, Bernd (4604555) (2146)	1	95.80%	1. e4 c5 2. Nf3 e6 3. d4 cxd4
2025.11.01	Round 1: Adelhuette, Dennis - Jacobson, Aaron	1.40	2025.11.01 Adelhuette, Dennis, Dr. (4661265) (2073)	1	94.30%	1. d4 Nf6 2. Nf3 d5 3. c4 e6
2025.07.31	Round 5: Heimann, Mark - Jacobson, Aaron	5.4	2025.07.31 Heimann, Mark (2028441) (2513)	0	80.00%	1. e4 e6 2. d4 d5 3. Nc3 Nf6
2025.07.30	Round 4: Jacobson, Aaron - Bronstein, Or	4.3	2025.07.30 Bronstein, Or (2815770) (2459)	½	94.30%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2025.07.29	Round 3: Jacobson, Aaron - Magkalakis, Stefanos	3.10	2025.07.29 Magkalakis, Stefanos (25834134) (2227)	1	75.20%	1. e4 e5 2. f4 d5 3. exd5 exf4
2025.07.29	Round 2: Zeneli, Klendi - Jacobson, Aaron	2.27	2025.07.29 Zeneli, Klendi (4706609) (2225)	1	88.90%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2025.02.17	Round 9: Kaliksteyn, Alexander - Jacobson, Aaron	9.3	2025.02.17 Kaliksteyn, Alexander (2007630) (2337)	½	98.50%	1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6
2025.02.17	Round 8: Jacobson, Aaron - Park, Evan	8.4	2025.02.17 Park, Evan (30931142) (2415)	0	71.80%	1. c4 e6 2. Nc3 d5 3. d4 Nf6
2025.02.16	Round 7: Yang, Qindong - Jacobson, Aaron	7.2	2025.02.16 Yang, Qindong (8603758) (2202)	½	89.70%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2025.02.16	Round 6: Jacobson, Aaron - Lenderman, Aleksandr	6.5	2025.02.16 Lenderman, Aleksandr (2021285) (2480)	1	98.90%	1. e4 e6 2. d4 d5 3. Nc3 Nf6
2025.02.15	Round 5: Jacobson, Aaron - Gauri, Shankar	5.1	2025.02.15 Gauri, Shankar (5041350) (2360)	1	95.90%	1. c4 Nf6 2. Nc3 e6 3. Nf3 d5
2025.02.15	Round 4: Putnam, Liam - Jacobson, Aaron	4.5	2025.02.15 Putnam, Liam (30938279) (2402)	½	93.50%	1. d4 d5 2. Nf3 Nf6 3. Bf4 c5
2025.02.14	Round 3: Jacobson, Aaron - Paragua, Mark	3.2	2025.02.14 Paragua, Mark (5201241) (2446)	1	92.20%	1. c4 e6 2. Nc3 d5 3. d4 Nf6
2025.02.14	Round 2: Stearman, Josiah - Jacobson, Aaron	2.4	2025.02.14 Stearman, Josiah (2062496) (2439)	0	87.50%	1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6
2025.02.13	Round 1: Jacobson, Aaron - Nagy, Gabor	1.3	2025.02.13 Nagy, Gabor (737119) (2472)	½	64.60%	1. e4 c5 2. Nf3 e6 3. d4 cxd4
2025.01.22	Round 4: Jacobson, Aaron - Zeltsan, Joseph	4.3	2025.01.22 Zeltsan, Joseph (30932980) (2350)	1	88.50%	1. c4 g6 2. d4 Bg7 3. e4 d6
2025.01.22	Round 2: Morris-Suzuki, Alan H - Jacobson, Aaron	2.5	2025.01.22 Morris-Suzuki, Alan H (30933218) (1920)	1	98.00%	1. Nf3 d5 2. g3 Nf6 3. Bg2 e6
2025.01.21	Round 1: Jacobson, Aaron - Paragua, Dominic Nathan	1.5	2025.01.21 Paragua, Dominic Nathan (30973023) (1821)	1	96.80%	1. e4 c5 2. Nf3 d6 3. c3 Nf6
2025.01.20	Round 3: Jacobson, Aaron - Dlugy, Maxim	3.1	2025.01.20 Dlugy, Maxim (2000075) (2508)	0	89.90%	1. d4 d5 2. Nf3 c5 3. e3 Nf6
2025.01.20	Round 9: Jacobson, Aaron - Levine, Joseph	9.5	2025.01.20 Levine, Joseph (30940346) (2392)	1	44.20%	1. e4 e6 2. d4 d5 3. Nc3 Nf6
2025.01.20	Round 8: Narayanan, Samrug - Jacobson, Aaron	8.1	2025.01.20 Narayanan, Samrug (30914051) (2422)	0	79.00%	1. e4 e5 2. Nf3 Nc6 3. Bb5 f5
2025.01.19	Round 7: Gedajlovic, Max - Jacobson, Aaron	7.5	2025.01.19 Gedajlovic, Max (2616840) (2390)	½	91.50%	1. d4 e6 2. c4 b6 3. Nf3 Bb7
2025.01.19	Round 6: Jacobson, Aaron - Batsuren, Dambasuren	6.2	2025.01.19 Batsuren, Dambasuren (4902920) (2523)	0	92.20%	1. c4 b6 2. d4 Bb7 3. Nc3 Nf6
2025.01.18	Round 5: Barbosa, Oliver - Jacobson, Aaron	5.4	2025.01.18 Barbosa, Oliver (5201640) (2451)	0	88.40%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2025.01.18	Round 4: Jacobson, Aaron - Adewumi, Tanitoluwa	4.3	2025.01.18 Adewumi, Tanitoluwa (30966396) (2352)	1	95.60%	1. d4 Nf6 2. c4 e6 3. Nf3 b6
2025.01.17	Round 3: Paragua, Mark - Jacobson, Aaron	3.3	2025.01.17 Paragua, Mark (5201241) (2432)	0	55.00%	1. e4 e5 2. Nf3 Nc6 3. Bb5 f5
2025.01.17	Round 2: Jacobson, Aaron - Lin, Bryan Enming	2.4	2025.01.17 Lin, Bryan Enming (30987121) (2317)	0	83.10%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2025.01.16	Round 1: Petenyi, Tamas - Jacobson, Aaron	1.2	2025.01.16 Petenyi, Tamas (14909090) (2276)	½	89.40%	1. e4 e5 2. Nf3 Nc6 3. Bb5 f5
2024.12.15	Round 7: Colwell, Andrew - Jacobson, Aaron	7.6	2024.12.15 Colwell, Andrew (30964075) (1838)	1	76.10%	1. d4 e6 2. c4 b6 3. g3 Bb7
2024.12.15	Round 6: Jacobson, Aaron - Bortnyk, Mykola	6.2	2024.12.15 Bortnyk, Mykola (14120836) (2400)	0	87.90%	1. d4 d5 2. c4 e6 3. Nf3 Nf6
2024.12.14	Round 5: Hebbar, Eshaan - Jacobson, Aaron	5.6	2024.12.14 Hebbar, Eshaan (30974690) (2121)	1	91.80%	1. d4 e6 2. c4 b6 3. e4 Bb7
2024.12.14	Round 4: Jacobson, Aaron - Hughes, John L	4.4	2024.12.14 Hughes, John L (2046105) (2164)	½	94.30%	1. d4 d5 2. c4 dxc4 3. Nf3 c5
2024.12.13	Round 3: Matta, Nicholas - Jacobson, Aaron	3.4	2024.12.13 Matta, Nicholas (30914523) (2253)	½	84.00%	1. d4 e6 2. c4 b6 3. a3 Bb7
2024.12.13	Round 2: Jacobson, Aaron - Dedona, Mark	2.5	2024.12.13 DeDona, Mark (30920256) (1919)	½	94.40%	1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6
2024.12.12	Round 1: Rosenthal, Max Manuel - Jacobson, Aaron	1.6	2024.12.12 Rosenthal, Max Manuel (34603913) (1997)	1	93.10%	1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6
2024.11.11	Round 9: Budisavljevic, Luka - Jacobson, Aaron	9.1	2024.11.11 Budisavljevic, Luka (960047) (2488)	½	91.50%	1. Nf3 d5 2. g3 g6 3. Bg2 Bg7
2024.11.11	Round 8: Jacobson, Aaron - Chen, Ryo	8.1	2024.11.11 Chen, Ryo (7003072) (2435)	1	92.40%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2024.11.10	Round 7: Mendes Aaron Reeve - Jacobson, Aaron	7.1	2024.11.10 Mendes Aaron Reeve (25954938) (2320)	½	94.70%	1. Nf3 d5 2. g3 Nf6 3. Bg2 c5
2024.11.10	Round 6: Jacobson, Aaron - Amburgy, Ryan	6.1	2024.11.10 Amburgy, Ryan (30924820) (2234)	1	97.00%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2024.11.09	Round 5: Adewumi, Tanitoluwa - Jacobson, Aaron	5.1	2024.11.09 Adewumi, Tanitoluwa (30966396) (2347)	½	76.60%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2024.11.09	Round 4: Jacobson, Aaron - Stearman, Josiah	4.1	2024.11.09 Stearman, Josiah (2062496) (2445)	1	95.30%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2024.11.08	Round 3: Paragua, Mark - Jacobson, Aaron	3.1	2024.11.08 Paragua, Mark (5201241) (2446)	0	92.20%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2024.11.08	Round 2: Jacobson, Aaron - Cordova, Emilio	2.1	2024.11.08 Cordova, Emilio (3801497) (2525)	0	83.20%	1. e4 c5 2. Nf3 a6 3. c3 d5
2024.11.07	Round 1: Petenyi, Tamas - Jacobson, Aaron	1.1	2024.11.07 Petenyi, Tamas (14909090) (2303)	1	92.60%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2024.08.29	Round 7: Hovakimyan, Vache - Jacobson, Aaron	7.18	2024.08.29 Hovakimyan, Vache (13317288) (2167)	0	88.70%	1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6
2024.07.14	Round 9: Jacobson, Aaron - Mendes Aaron Reeve	9.3	2024.07.14 Mendes Aaron Reeve (25954938) (2312)	1	94.30%	1. c4 c6 2. Nf3 d5 3. e3 Nf6
2024.07.14	Round 8: Lu, Maximillian - Jacobson, Aaron	8.3	2024.07.14 Lu, Maximillian (2096242) (2400)	1	96.10%	1. Nf3 d5 2. e3 c5 3. b3 a6
2024.07.13	Round 7: Jacobson, Aaron - Lohia, Sohum	7.4	2024.07.13 Lohia, Sohum (5819369) (2365)	1	95.60%	1. c4 Nf6 2. Nf3 e6 3. Nc3 d5
2024.07.13	Round 6: Mirzoev, Azer - Jacobson, Aaron	6.2	2024.07.13 Mirzoev, Azer (13400304) (2445)	½	98.50%	1. d4 Nf6 2. Nf3 d5 3. c4 e6
2024.07.12	Round 5: Jacobson, Aaron - Nagy, Gabor	5.5	2024.07.12 Nagy, Gabor (737119) (2440)	½	88.40%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2024.07.11	Round 3: Lenderman, Aleksandr - Jacobson, Aaron	3.5	2024.07.11 Lenderman, Aleksandr (2021285) (2517)	0	87.00%	1. d4 Nf6 2. Nf3 d5 3. Bf4 c5
2024.07.10	Round 2: Jacobson, Aaron - Adewumi, Tanitoluwa	2.2	2024.07.10 Adewumi, Tanitoluwa (30966396) (2386)	1	96.00%	1. e4 c5 2. Nf3 e6 3. c3 Nf6
2024.07.09	Round 4: Shlyakhtenko, Robert - Jacobson, Aaron	4.1	2024.07.09 Shlyakhtenko, Robert (30936934) (2412)	0	92.70%	1. d4 Nf6 2. Bf4 b6 3. e3 Bb7
2024.07.09	Round 1: Putnam, Liam - Jacobson, Aaron	1.4	2024.07.09 Putnam, Liam (30938279) (2376)	0	89.40%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2024.07.07	52nd Annual World Open	8.23	2024.07.07 Valido Bouza, Cesar Jose (3503933) (2136)	1	99.30%	1. d4 Nf6 2. c4 b6 3. Nc3 Bb7
2024.07.04	52nd Annual World Open	3.12	2024.07.04 Cordova, Emilio (3801497) (2531)	0	86.50%	1. d4 Nf6 2. c4 e6 3. Nf3 b6
2024.04.15	Round 6: Jacobson, Aaron - Kazarian, Anna-Maja		2024.04.15 Kazarian, Anna-Maja (1033689) (2207)	1	98.00%	1. e4 e6 2. d4 d5 3. Nc3 Nf6
2024.04.13	Round 5: Prado, Alexandra - Jacobson, Aaron		2024.04.13 Prado, Alexandra (3301346) (1839)	1	94.60%	1. e4 c5 2. Nc3 Nc6 3. g3 g6
2024.04.10	Round 2: Jacobson, Aaron - Donchenko, Alexander		2024.04.10 Donchenko, Alexander (24603295) (2633)	0	90.60%	1. e4 c6 2. d4 d5 3. Nc3 dxe4
2024.04.04	Menorca Open 2024	05	2024.04.04 Albornoz Cabrera, Carlos Daniel (3518736) (2604)	0	70.10%	1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6
2024.04.03	Menorca Open 2024	02	2024.04.03 Van Foreest, Jorden (1039784) (2668)	0	78.30%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.04.28	II CHESSABLE SUNWAY FORMENTERA	10.17	2023.04.28 Sahithi, Varshini M (2260)	1	91.40%	1. e4 e6 2. d4 d5 3. e5 c5
2023.04.27	II CHESSABLE SUNWAY FORMENTERA	9.15	2023.04.27 Fernandez Guillen, Ernesto J. (3512428) (2461)	0	83.20%	1. d4 Nf6 2. c4 e6 3. Nf3 b6
2023.04.26	II CHESSABLE SUNWAY FORMENTERA	8.18	2023.04.26 Rahal, Michael A (2319)	1	89.20%	1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7
2023.04.25	II CHESSABLE SUNWAY FORMENTERA	7.20	2023.04.25 Ivanov, Mike (2613158) (2288)	½	94.50%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2023.04.24	II CHESSABLE SUNWAY FORMENTERA	6.22	2023.04.24 Arnott, Jonathan W (408077) (2080)	1	95.00%	1. e4 e5 2. Nf3 Nc6 3. Bb5 g6
2023.04.22	II CHESSABLE SUNWAY FORMENTERA	5.20	2023.04.22 Maisuradze, Nino (2270)	0	88.00%	1. e4 c5 2. Nf3 Nc6 3. d4 cxd4
2023.04.21	II CHESSABLE SUNWAY FORMENTERA	4.22	2023.04.21 Rodriguez Lopez, Rafael (2204495) (2188)	½	91.00%	1. Nf3 d5 2. g3 Nf6 3. Bg2 e6
2023.04.20	Formentera 2023	3.13	2023.04.20 Pranav, V (25060783) (2545)	0	81.90%	1. d4 Nf6 2. c4 e6 3. Nf3 b6
2023.03.12	Saint Louis Super Swiss	1.5	2023.03.12 Bruzon Batista, Lazaro (3503739) (2610)	0	92.00%	1. d4 d5 2. c4 e6 3. Nf3 Nf6
????.??.??	Saint Louis Super Swiss	5.9	????.??.?? Durarbayli, Vasif (13402935) (2635)	0	89.20%	1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6
	Round 4: Jacobson, Aaron - Julia Sloan	4.2	Julia Sloan	1	93.10%	1. d4 f5 2. b4 Nf6 3. Nf3 e6
	Round 3: Mullodzhanov, Nathaniel - Jacobson, Aaron	3.1	Mullodzhanov, Nathaniel (30961580) (2164)	0	83.20%	1. e4 d6 2. d4 a5 3. Nc3 c6
	Round 2: Jacobson, Aaron - Weisz, Bryan	2.1	Weisz, Bryan (30934133) (1995)	1	97.30%	1. d4 d5 2. c4 Nf6 3. Nf3 g6
	Round 1: Kozower, Ethan - Jacobson, Aaron	1.1	Kozower, Ethan (30947227) (1954)	1	92.40%	1. c4 e5 2. e3 Nf6 3. Nc3 Nc6
	Round 9: Sadikhov, Ulvi - Jacobson, Aaron	9.9	Sadikhov, Ulvi (13401416) (2487)	1	94.70%	1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6
	Round 8: Jacobson, Aaron - Gupta, Abhijeet	8.6	Gupta, Abhijeet (5010608) (2535)	½	96.30%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
	Round 7: Jacobson, Aaron - Mnatsakanyan, Aren	7.23	Mnatsakanyan, Aren (13320424) (2150)	1	98.10%	1. d4 d5 2. c4 c6 3. Nf3 Nf6
	Round 6: Kormas, Georgios - Jacobson, Aaron	6.23	Kormas, Georgios (4289056) (2134)	½	82.80%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2023.12.22	Round 10: Aaron Jacobson - Seshadri Srija		2023.12.22 Seshadri Srija (2272)	0	84.80%	1. Nf3 d5 2. e3 Nf6 3. c4 e6
2023.12.21	Round 9: Thota Dhruva - Aaron Jacobson		2023.12.21 Thota Dhruva (2182)	0	88.50%	1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6
2023.12.20	Round 8: Aaron Jacobson - Khagan Ahmad		2023.12.20 Khagan Ahmad (2285)	1	96.70%	1. c4 e6 2. Nf3 d5 3. e3 Nf6
2023.12.19	Round 7: Abhimanyu Puranik - Aaron Jacobson		2023.12.19 Abhimanyu Puranik (2627)	0	89.70%	1. e4 c6 2. Nf3 d5 3. Nc3 dxe4
2023.12.18	Round 6: Aaron Jacobson - Chatterjee Utsab		2023.12.18 Chatterjee Utsab (2289)	1	97.60%	1. d4 d5 2. c4 e6 3. Nf3 Nf6
2023.12.16	Round 5: Aaron Jacobson - Hristos Alexiadis		2023.12.16 Hristos Alexiadis (2312)	½	96.80%	1. c4 Nf6 2. Nc3 g6 3. d4 Bg7
2023.12.14	Round 3: Alexander Domene Mulyukov - Aaron Jacobson		2023.12.14 Alexander Domene Mulyukov (2236)	1	93.90%	1. e4 e5 2. Nf3 Nc6 3. d4 exd4
2023.12.13	Round 2: Aaron Jacobson - Marius Gramb		2023.12.13 Marius Gramb (2203)	1	94.70%	1. c4 c5 2. Nf3 Nc6 3. Nc3 g6
2023.09.04	Round 9: Aaron Jacobson - Gabor Nagy		2023.09.04 Gabor Nagy (2452)	½	96.30%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.09.04	Round 8: Oliver Barbosa - Aaron Jacobson		2023.09.04 Oliver Barbosa (2476)	0	81.60%	1. Nf3 d5 2. d4 Nf6 3. c4 e6
2023.09.03	Round 7: Justin Chen - Aaron Jacobson		2023.09.03 Justin Chen (2376)	½	97.30%	1. c4 e5 2. d3 Bb4+ 3. Bd2 Bxd2+
2023.09.03	Round 6: Aaron Jacobson - Brewington Hardaway		2023.09.03 Brewington Hardaway (2378)	1	92.70%	1. c4 e6 2. Nf3 d5 3. e3 Nf6
2023.09.02	Round 5: Mark Paragua - Aaron Jacobson		2023.09.02 Mark Paragua (2433)	½	82.90%	1. d4 e6 2. c4 Nf6 3. g3 d5
2023.09.02	Round 4: Aaron Jacobson - Akira Nakada		2023.09.02 Akira Nakada (2369)	½	96.20%	1. d4 Nf6 2. c4 e6 3. Nc3 Bb4
2023.09.01	Round 3: Gus Huston - Aaron Jacobson		2023.09.01 Gus Huston (2439)	1	93.50%	1. e4 c6 2. d4 d5 3. e5 Bf5
2023.09.01	Round 2: Aaron Jacobson - Terry Luo		2023.09.01 Terry Luo (2351)	1	97.00%	1. c4 Nf6 2. Nc3 g6 3. d4 Bg7
2023.08.31	Round 1: Ikrom Ibrohimov - Aaron Jacobson		2023.08.31 Ikrom Ibrohimov (2269)	½	98.10%	1. e4 c5 2. c3 d5 3. exd5 Qxd5
2023.08.28	Ronda 3: Kirill ALEKSEENKO - Aaron JACOBSON		2023.08.28 Kirill ALEKSEENKO	0	85.20%	1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4
2023.08.27	Round 10: Jose Gabriel CARDOSO CARDOSO - Aaron JACOBSON		2023.08.27 Jose Gabriel CARDOSO CARDOSO	0	89.10%	1. d4 d5 2. c4 e6 3. Nc3 c6
2023.08.26	Round 9: Aaron JACOBSON - Dylan Isidro BERDAYES ASON		2023.08.26 Dylan Isidro BERDAYES ASON	½	92.40%	1. e4 c5 2. Nf3 e6 3. d4 cxd4
2023.08.16	Round 9: Justin Lee - Aaron Jacobson		2023.08.16 Justin Lee	0	-
2023.08.15	Round 8: Aaron Jacobson - Rahul SRIVATSHAV P		2023.08.15 Rahul SRIVATSHAV P (25059653)	½	97.00%	1. d4 Nf6 2. c4 e6 3. Nf3 c5
2023.08.15	Round 7: Daniel Girsh - Aaron Jacobson		2023.08.15 Daniel Girsh	½	81.10%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.08.14	Round 6: Aaron Jacobson - Derek Clasby		2023.08.14 Derek Clasby	1	93.70%	1. d4 Nf6 2. c4 g6 3. Nc3 d5
2023.08.14	Round 5: Mikhail antipov - Aaron Jacobson		2023.08.14 Mikhail antipov	0	85.50%	1. e4 e6 2. d4 d5 3. Nd2 c5
2023.08.13	Round 4: Aaron Jacobson - David Brodsky		2023.08.13 David Brodsky	½	94.90%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.08.13	Round 3: Edward Song - Aaron Jacobson		2023.08.13 Edward Song	½	95.10%	1. e4 e6 2. d4 d5 3. Nc3 Nf6
2023.08.12	Round 2: Aaron Jacobson - Eshaan Hebbar		2023.08.12 Eshaan Hebbar	1	94.80%	1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6
2023.08.06	Round 9: G Peter Arnaudov - Aaron Jacobson		2023.08.06 G Peter Arnaudov	½	96.70%	1. Nf3 d5 2. g3 Nf6 3. Bg2 e6
2023.08.06	Round 8: Aaron Jacobson - Terry Luo		2023.08.06 Terry Luo	1	94.10%	1. d4 d5 2. c4 e6 3. Nc3 Nf6
2023.08.05	Round 7: Harshid Kunka - Aaron Jacobson		2023.08.05 Harshid Kunka	½	97.10%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2023.08.05	Round 6: Aaron Jacobson - Nikola Mitkov		2023.08.05 Nikola Mitkov	½	96.70%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.08.04	Round 5: Aaron Jacobson - Maximillian Lu		2023.08.04 Maximillian Lu	1	95.50%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.08.04	Round 4: Ezra Chambers - Aaron Jacobson		2023.08.04 Ezra Chambers	1	96.30%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2023.08.03	Round 3: Aaron Jacobson - Mark Heimann		2023.08.03 Mark Heimann	½	90.90%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.08.03	Round 2: Vladimir Georgiev - Aaron Jacobson		2023.08.03 Vladimir Georgiev	½	98.30%	1. e4 e6 2. d4 d5 3. exd5 exd5
2023.08.02	Round 1: Aaron Jacobson - Sam Schmakel		2023.08.02 Sam Schmakel	0	91.30%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.06.27	16th Annual Philadelphia International International	7	2023.06.27 Cristhian Cruz	0	87.20%	1. c4 e6 2. Nf3 Nf6 3. Nc3 d5
2023.06.25	16th Annual Philadelphia International International	4	2023.06.25 Theodore Slade	1	91.60%	1. d4 e6 2. c4 Nf6 3. g3 d5
2023.06.24	16th Annual Philadelphia International International	2	2023.06.24 Djurabek Khamrakulov	0	89.40%	1. e4 e6 2. d4 d5 3. Nd2 c5
2023.06.18	Las Vegas National Open 2023	8	2023.06.18 Jonah B Willow	0	89.30%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.06.17	Las Vegas National Open 2023	7	2023.06.17 Justin Wang	½	99.10%	1. e4 e6 2. d4 d5 3. Nd2 c5
2023.06.17	Las Vegas National Open 2023	6	2023.06.17 Semen Khanin	0	82.70%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.06.17	Las Vegas National Open 2023	5	2023.06.17 Robert Shlyakhtenko	1	78.20%	1. d4 e6 2. c4 d5 3. Nc3 c6
2023.06.15	Las Vegas National Open 2023	2	2023.06.15 Vasif Durarbayli	0	92.60%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2023.06.12	Round 9: Aaron Jacobson - Jacek Stopa		2023.06.12 Jacek Stopa	½	81.00%	1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4
2023.06.12	Round 8: IM Gianmarco Leiva (2405) - FM Aaron Jacobson (2301)		2023.06.12 Gianmarco Leiva	½	94.30%	1. Nf3 d5 2. b3 Nf6 3. Bb2 e6
2023.06.12	Round 7: Aaron Jacobson - Josiah Stearman		2023.06.12 Josiah Stearman	0	89.20%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.06.11	Round 6: Justin Wang - Aaron Jacobson		2023.06.11 Justin Wang	½	83.30%	1. d4 Nf6 2. c4 e6 3. Nf3 d5
2023.06.11	Round 5: Aaron Jacobson - Kostya Kavutskiy		2023.06.11 Kostya Kavutskiy	1	91.30%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2023.06.10	Round 4: Max Lu - Aaron Jacobson		2023.06.10 Max Lu	½	95.30%	1. Nf3 d5 2. d4 Nf6 3. c4 e6
2023.06.10	Round 3: Aaron Jacobson - Daniel Fernandez		2023.06.10 Daniel Fernandez	0	78.70%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2023.06.09	Round 2: Aaron Jacobson - Jonah Willow		2023.06.09 Jonah Willow	1	95.60%	1. d4 Nf6 2. c4 e6 3. Nf3 c5
2023.06.09	Round 1: Paris Dorn - Aaron Jacobson		2023.06.09 Paris Dorn	1	83.70%	1. d4 Nf6 2. c4 e6 3. Nc3 Bb4
2023.05.26	Round 2: Aleksandr Lenderman - Aaron Jacobson		2023.05.26 Aleksandr Lenderman	½	93.70%	1. Nf3 d5 2. g3 g6 3. Bg2 Bg7
2023.05.26	Round 1: Aaron Jacobson - Aleksandr Lenderman		2023.05.26 Aleksandr Lenderman	½	93.50%	1. e4 c5 2. Nf3 Nc6 3. d4 cxd4
2023.03.21	Round 9: Aaron Jacobson - Andy Woodward		2023.03.21 Andy Woodward	1	91.70%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2023.03.21	Round 8: Eugene Yanayt - Aaron Jacobson		2023.03.21 Eugene Yanayt	1	95.50%	1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6
2023.03.21	Round 7: Aaron Jacobson - Gabriel Bick		2023.03.21 Gabriel Bick	½	96.70%	1. c4 Nf6 2. Nc3 g6 3. d4 Bg7
2023.03.20	Round 6: Isaac Wang - Aaron Jacobson		2023.03.20 Isaac Wang	1	97.20%	1. d4 e6 2. c4 b6 3. Nc3 Bb7
2023.03.19	Round 5: Aaron Jacobson - Jacob Chiang		2023.03.19 Jacob Chiang	0	83.80%	1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6
2023.03.19	Round 4: Aaron Jacobson - Neil Doknjas		2023.03.19 Neil Doknjas	1	98.20%	1. Nf3 d5 2. e3 Nf6 3. c4 e6
2023.03.19	Round 3: Alexander Katz - Aaron Jacobson		2023.03.19 Alexander Katz	0	88.20%	1. e4 e6 2. d4 d5 3. Nc3 Nf6
2023.03.18	Round 2: Aaron Jacobson - Iris Mou		2023.03.18 Iris Mou	1	93.20%	1. Nf3 Nf6 2. c4 e6 3. e3 b6
2023.03.18	Round 1: John Burke - Aaron Jacobson		2023.03.18 John Burke	0	74.10%	1. e4 e6 2. d4 d5 3. Nc3 Nf6