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Player Profile

Player:

(Eg: Carlsen,Magnus)

Gamundi Salamanca, Antonio



FIDE:	FIDE Card
Title:	IM
Years:	1989-2023
Number of games:	285
Number of wins:	120
Number of draws:	102
Number of losses:	63
White score:	100½/145 (69.31% - Average Elo: 2369.5)
Black score:	70½/140 (50.36% - Average Elo: 2372.64)

Rating progression

Games
White wins
White draws
White losses
Black wins
Black draws
Black losses

Top wins

Gamundi Salamanca, Antonio (2440) - Magem Badals, Jordi (2570), Andorra op 15th, Andorra (A34) - 1997

Gamundi Salamanca, Antonio (2464) - Vallejo Pons, Francisco (2554), ESP-chT, Barcelona (D48) - 2000

Gamundi Salamanca, Antonio (2450) - Romero Holmes, Alfonso (2550), Villa de Albox 4th, Almeria (A40) - 2003

Ulybin, Mikhail (2550) - Gamundi Salamanca, Antonio (2395), Andorra op 14th, Andorra (B52) - 1996

Marin, Mihail (2530) - Gamundi Salamanca, Antonio (2395), Andorra op 14th, Andorra (A30) - 1996

Suba, Mihai (2510) - Gamundi Salamanca, Antonio (2450), Dos Hermanas op, Dos Hermanas (D85) - 2000

Gamundi Salamanca, Antonio - ? (133)

De la Riva Aguado, Oscar (1/2)

De la Villa Garcia, Jesus Maria (1/2)

Delchev, Aleksander (1/2)

Franco Ocampos, Zenon (½/2)

Magem Badals, Jordi (1½/2)

Mellado Trivino, Juan (2/2)

Pogorelov, Ruslan (1½/2)

Ramo Frontinan, Cristobal (1/2)

Rodriguez Cespedes, Amador (1½/2)

Rodriguez Vargas, Orestes (1/2)

Romero Holmes, Alfonso (1½/2)

Suba, Mihai (½/2)

Alcazar Jimenez, Victor Manuel (1/1)

Alexieva, Silvia (½/1)

Alles Mascaro, J (1/1)

Alshameary Puente, Ismael (1/1)

Andreu Lopez, Santiago (1/1)

Arias Igual, Alejandro (½/1)

Balbuena Fuentes, Mario (1/1)

Baron Rodriguez, Jesus (½/1)

Bello Filgueira, Joaquin Antonio (1/1)

Bernabeu Lopez, Carlos Javier (½/1)

Bombin Pinera, Dionisio (1/1)

Braga, Fernando Alberto (0/1)

Buturin, Vladimir (1/1)

Camino Carrio, Nicanor (1/1)

Campos Moreno, Javier B (1/1)

Castro, Raul (1/1)

Celaya Tapiz, Jose Maria (1/1)

Cerdo Fernandez, Miguel (1/1)

Chabrol, Thierry (1/1)

Chavarria Cardona, Xavier (1/1)

Cisneros Alomar, Javier (1/1)

Cuevas Rodriguez, Maria Luisa (1/1)

Del Rio de Angelis, Salvador Gabriel (½/1)

Dhar Barua, Saheli (1/1)

Diaz Camallonga, Carles (½/1)

Diez Fraile, Mariano (1/1)

Eslon, Jaan (½/1)

Estremera Panos, Sergio (½/1)

Fernandez Romero, Ernesto (½/1)

Fernandez Siles, Luis (½/1)

Fressinet, Laurent (½/1)

Gallego Jimenez, Victoriano (½/1)

Garcia Albarracin, Francisco (½/1)

Garcia Carbo, Marcial (1/1)

Garcia Castro, Pablo (½/1)

Garcia Palermo, Carlos H (1/1)

Garcia, A (1/1)

Garcia, Gildardo (½/1)

Garcia, Jhoel (1/1)

Garcia, Jo (0/1)

Garrido Dominguez, Jesus (1/1)

Geller, Efim P (½/1)

Glavina, Pablo (1/1)

Gligoric, Svetozar (0/1)

Gonzalez de la Nava, Amador (1/1)

Gonzalez Garcia, Jose (1/1)

Gurevich, Dmitry (½/1)

Gurieli, Nino (0/1)

Gutierrez Castillo, Paloma (1/1)

Hector, Jonny (½/1)

Hernandez Gallardo, Francisco Javier (1/1)

Hoensch, Matthias (1/1)

Huss, Andreas (1/1)

Iglesias Valle, Julian (1/1)

Iruzubieta Villaluenga, Jesus Maria (½/1)

Izeta Txabarri, Felix (1/1)

Jimenez Ruano, Adrian (0/1)

Kharlov, Andrei (½/1)

Komljenovic, Davorin (1/1)

Koskinen, Henri (1/1)

Kurajica, Bojan (½/1)

Lacasa Diaz, Jose Antonio (0/1)

Lalic, Bogdan (½/1)

Lara Mezcua, Alonso (1/1)

Lopez Martinez, Josep Manuel (½/1)

Malo Quiros, Miguel Angel (1/1)

Martinez, D (1/1)

Mascaro March, Pedro (½/1)

Masmitja, X (1/1)

Merino Garcia, Rafael (½/1)

Moreno Perez, Bartol (1/1)

Moreno Ruiz, Javier (0/1)

Moskalenko, Viktor (1/1)

Narciso Dublan, Marc (0/1)

Nava Baro, Enrique (1/1)

Navarro Ortiz de Orruno, Borja (1/1)

Nikcevic, Nebojsa (0/1)

Nikolic, Stanimir (0/1)

Oms Pallisse, Josep (1/1)

Outerelo Ucha, Manuel (1/1)

Pablo Marin, Alejandro (1/1)

Palmans, Ton (1/1)

Paramos Dominguez, Roberto (0/1)

Pares Vives, Jose (1/1)

Peinado Ruiz, R (1/1)

Penalonga Sweers, Angel (1/1)

Perez Pardo, Juan Carlos (0/1)

Permuy Lorenzo, Carlos Javier (½/1)

Ramos Moreno, Francisco Jose (1/1)

Rego, Pedro Filipe (1/1)

Rios, Cristhian Camilo (0/1)

Rivas Pastor, Manuel (½/1)

Rivera Kuzawka, Daniel (1/1)

Roa Alonso, Santiago (1/1)

Rodriguez Izquierdo, Benjamin (1/1)

Rodriguez Talavera, Juan Carlos (0/1)

Roiz Baztan, David (½/1)

Rojas Franco, Miguel (1/1)

Romanishin, Oleg M (½/1)

Rueda Delgado, Fernando (1/1)

Saldano Dayer, Horacio (½/1)

Santos Latasa, Jaime (½/1)

Serrano Almendros, Angel (1/1)

Solana Suarez, Ernesto (1/1)

Spraggett, Kevin (1/1)

Toledano Llinares, Juan Antonio (1/1)

Torres Moreno, Juan (1/1)

Vallejo Pons, Francisco (1/1)

Vallespir Salor, Gabriel (1/1)

Van der Werf, Mark (½/1)

Vassallo Barroche, Mauricio (0/1)

Vaya Gomez, Alejandro (1/1)

Veingold, Aleksandr (½/1)

Vera Gonzalez Quevedo, Reynaldo (½/1)

Villalobos Luque, Jose Manuel (1/1)

Villar Perez, Samuel (½/1)

Villatoro, G (1/1)

Villavicencio Martinez, Adalberto (½/1)

Westerinen, Heikki MJ (½/1)

Zarnicki, Pablo Adrian (½/1)

Ziegler, Ari (½/1)

? - Gamundi Salamanca, Antonio (124)

Corral Blanco, Juan Antonio (1½/3)

De la Riva Aguado, Oscar (½/3)

Arencibia Rodriguez, Walter (0/2)

Ballesteros Gonzalez, David (2/2)

Bellon Lopez, Juan Manuel (0/2)

Campos Moreno, Javier B (0/2)

Castillo Gallego, Sergio (2/2)

De la Villa Garcia, Jesus Maria (1/2)

Delchev, Aleksander (0/2)

Giorgadze, Giorgi (½/2)

Gonzalez de la Torre, Santiago (1½/2)

Suba, Mihai (1½/2)

Vassallo Barroche, Mauricio (1/2)

Zlotnik, Boris A (½/2)

Adnoy, Hallvard Voll (½/1)

Alcazar Jimenez, Jesus Alberto (0/1)

Alonso Garcia, Rene Marcial (0/1)

Antunes, Antonio (0/1)

Aracil Serra, Javier (1/1)

Arbakov, Valentin (½/1)

Ayas Fernandez, Antonio (1/1)

Baron Isanta, Jose Maria (0/1)

Bernabeu Lopez, Carlos Javier (½/1)

Bernal Moro, Luis Javier (0/1)

Camacho Collados, Marcos (0/1)

Campora, Daniel Hugo (0/1)

Caselas Cabanas, Jacobo (½/1)

Catala Alos, Jorge M (1/1)

Cattoni, Manuel (1/1)

Cooper, Lawrence (½/1)

Cordon Gutierrez, Juan Pedro (½/1)

Cramling, Pia (½/1)

Cuadras Avellana, Jordi (½/1)

Damljanovic, Branko (0/1)

David, Alberto (1/1)

De Santis, Alessio (½/1)

Del Rey, Diego (1/1)

Ducros Salva, Antonio (1/1)

Encinas Encinas, Alvaro (1/1)

Ermenkov, Evgenij (0/1)

Espinosa Aranda, Angel (0/1)

Estremera Panos, Sergio (1/1)

Fernandez Garcia, Jose Luis (0/1)

Fernandez Siles, Luis (0/1)

Figuero Toro, Julian Francisco (1/1)

Foisor, Ovidiu Doru (½/1)

Garcia Gomez, PJ (1/1)

Garcia Ilundain, David (½/1)

Garcia Martinez, Silvino (½/1)

Garcia Panizo, Amilcar (1/1)

Garcia, Gildardo (½/1)

Gavilan Diaz, Mario (½/1)

Gonzalez Arribas, Vidal Alejandro (1/1)

Gonzalez Garcia, Guillermo (1/1)

Guerra Bastida, Diego (½/1)

Hall, Jesper (0/1)

Henriquez Villagra, C (½/1)

Hernandez Guerrero, Gilberto Eduardo (½/1)

Ibanez Tarradellas, Eduardo (1/1)

Ibragimov, Ildar (0/1)

Iglesias, Jorge (½/1)

Konarkowska Sokolov, Henrijeta (0/1)

Kurajica, Bojan (0/1)

Ladron de Guevara Pinto, Paolo (½/1)

Lagos Lejarraga, Jon (1/1)

Lopez Colon, Francisco (½/1)

Lukov, Valentin (½/1)

Magem Badals, Jordi (0/1)

Marin, Mihail (1/1)

Martinez Gonzalez, Alejandro Santiago (0/1)

Martinez Martinez, Jesus (1/1)

Martinez Rubi, Alberto (½/1)

Medina Carrasco, Santiago (1/1)

Mellado Trivino, Juan (0/1)

Mellebeek, Bart (1/1)

Menendez Rey, Francisco Javier (1/1)

Merino Garcia, Rafael (½/1)

Miguel Lago, Victor Miguel (1/1)

Miles, Anthony John (½/1)

Munoz Agullo, Jose Francisco (1/1)

Naranjo Moreno, Antonio (½/1)

Narciso Dublan, Marc (1/1)

Navarro Ortiz de Orruno, Borja (1/1)

Ochoa de Echaguen, Francisco Javier (½/1)

Oltra Caurin, Ramon (1/1)

Pablo Marin, Alejandro (1/1)

Panchenko, Alexandar G (0/1)

Paunovic, Dragan (0/1)

Paz, Enrique (1/1)

Perez Tores, Juan Miguel (½/1)

Pinheiro, Jose (½/1)

Pinter, Jozsef (0/1)

Piza Cortizo, Daniel Ricardo (½/1)

Pons Boscana, Gabriel (0/1)

Portela Peleteiro, Alberto (½/1)

Reinaldo Castineira, Roi (½/1)

Renet, Olivier (0/1)

Roa Alonso, Santiago (½/1)

Rodriguez Talavera, Juan Carlos (½/1)

Roeder, Mathias (0/1)

Ros Eskisabel, Jose Ramon (½/1)

Roy Laguens, Antonio (1/1)

Rustemov, Alexander (½/1)

Saldano Dayer, Horacio (½/1)

San Segundo Carrillo, Pablo (0/1)

Sanchez Saez, Francisco (1/1)

Simon, Hans Christian (1/1)

Sion Castro, Marcelino (0/1)

Spraggett, Kevin (0/1)

Theiss Vozar, John (1/1)

Todorcevic, Miodrag (½/1)

Torres Medina, Miguel (1/1)

Tukmakov, Vladimir B (0/1)

Ubilava, Elizbar (½/1)

Ulybin, Mikhail (1/1)

Valcarcel Lopez, Oscar (1/1)

Vidarte Morales, Arturo (1/1)

Villavicencio Martinez, Adalberto (½/1)

Vukic, Milan (½/1)

Westerinen, Heikki MJ (0/1)

Whatley, Stephen Arthur (1/1)

Xie, Jun (½/1)

Yeo, Michael J (½/1)

Ziegler, Ari (½/1)

Openings played as White (89)

A45 Queen's Pawn Game (1.d4 Nf6)
Average Elo: 2291.8
Result: 3/5 = 60%

A40 Queen's Pawn Game (1.d4)
Average Elo: 2461.67
Result: 3½/4 = 87.5%

E97 King's Indian (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6)
Average Elo: 2242
Result: 3½/4 = 87.5%

A84 Dutch (1.d4 f5 2.c4)
Average Elo: 2388.25
Result: 3/4 = 75%

E70 King's Indian (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4)
Average Elo: 2273.75
Result: 3/4 = 75%

A29 English, Four Knights, Kingside Fianchetto (1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3)
Average Elo: 2462
Result: 3½/4 = 87.5%

A42 Modern Defense, Averbakh System (1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4)
Average Elo: 2395
Result: 1½/3 = 50%

E15 Queen's Indian (1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3)
Average Elo: 2490.67
Result: 2/3 = 66.67%

E92 King's Indian (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5)
Average Elo: 2232.67
Result: 3/3 = 100%

A37 English, Symmetrical (1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3)
Average Elo: 2312
Result: 1½/3 = 50%

D34 Queen's Gambit Declined, Tarrasch (1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7)
Average Elo: 2296.67
Result: 2½/3 = 83.33%

A25 English (1.c4 e5 2.Nc3 Nc6)
Average Elo: 2346.67
Result: 2/3 = 66.67%

D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) System (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6)
Average Elo: 2512.5
Result: 1/2 = 50%

A70 Benoni, Classical with 7.Nf3 (1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3)
Average Elo: 2465
Result: 1/2 = 50%

E16 Queen's Indian (1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+)
Average Elo: 0
Result: 2/2 = 100%

A09 Reti Opening (1.Nf3 d5 2.c4)
Average Elo: 2417.5
Result: 1/2 = 50%

A21 English (1.c4 e5 2.Nc3)
Average Elo: 2452.5
Result: 1½/2 = 75%

E94 King's Indian, Orthodox (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O)
Average Elo: 2397
Result: 1/2 = 50%

E32 Nimzo-Indian, Classical (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2)
Average Elo: 2465
Result: 1½/2 = 75%

A57 Benko Gambit (1.d4 Nf6 2.c4 c5 3.d5 b5)
Average Elo: 2450
Result: 2/2 = 100%

A59 Benko Gambit (1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4)
Average Elo: 2447
Result: 1/2 = 50%

E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5)
Average Elo: 2330
Result: 1½/2 = 75%

D53 Queen's Gambit Declined (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7)
Average Elo: 0
Result: 2/2 = 100%

A81 Dutch (1.d4 f5 2.g3)
Average Elo: 2470
Result: 1/2 = 50%

B38 Sicilian, Accelerated Fianchetto, Maroczy Bind, 6.Be3 (1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3)
Average Elo: 2520
Result: 1½/2 = 75%

A36 English (1.c4 c5 2.Nc3 Nc6 3.g3)
Average Elo: 2341.5
Result: 1½/2 = 75%

A46 Queen's Pawn Game (1.d4 Nf6 2.Nf3)
Average Elo: 2357.5
Result: 1/2 = 50%

A10 English (1.c4)
Average Elo: 2153
Result: 1½/2 = 75%

D48 Queen's Gambit Declined Semi-Slav, Meran (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6)
Average Elo: 2509.5
Result: 2/2 = 100%

A34 English, Symmetrical (1.c4 c5 2.Nc3)
Average Elo: 2491
Result: 2/2 = 100%

A28 English (1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6)
Average Elo: 2507
Result: 1/2 = 50%

D11 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3)
Average Elo: 2400
Result: 1½/2 = 75%

C41 Philidor Defense (1.e4 e5 2.Nf3 d6)
Average Elo: 2101
Result: 1½/2 = 75%

B22 Sicilian, Alapin (1.e4 c5 2.c3)
Average Elo: 2329
Result: 1/2 = 50%

E12 Queen's Indian (1.d4 Nf6 2.c4 e6 3.Nf3 b6)
Average Elo: 2376.5
Result: 1/2 = 50%

D56 Queen's Gambit Declined (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4)
Average Elo: 2160.5
Result: 2/2 = 100%

D02 Queen's Pawn Game (1.d4 d5 2.Nf3)
Average Elo: 2350
Result: 1½/2 = 75%

E43 Nimzo-Indian, Fischer Variation (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6)
Average Elo: 2485
Result: 0/1 = 0%

A05 Reti Opening (1.Nf3 Nf6)
Average Elo: 2355
Result: 0/1 = 0%

A63 Benoni, Fianchetto, 9...Nbd7 (1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O Nbd7)
Average Elo: 2475
Result: 0/1 = 0%

D50 Queen's Gambit Declined (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5)
Average Elo: 2465
Result: ½/1 = 50%

E91 King's Indian (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2)
Average Elo: 0
Result: 1/1 = 100%

E11 Bogo-Indian Defense (1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+)
Average Elo: 2410
Result: 1/1 = 100%

E85 King's Indian, Samisch, Orthodox Variation (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5)
Average Elo: 2360
Result: 0/1 = 0%

E90 King's Indian (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3)
Average Elo: 2375
Result: 0/1 = 0%

A07 King's Indian Attack (1.Nf3 d5 2.g3)
Average Elo: 2445
Result: 1/1 = 100%

A88 Dutch, Leningrad, Main Variation with c6 (1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 c6)
Average Elo: 0
Result: 1/1 = 100%

A80 Dutch (1.d4 f5)
Average Elo: 2250
Result: ½/1 = 50%

E39 Nimzo-Indian, Classical, Pirc Variation (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O)
Average Elo: 0
Result: 1/1 = 100%

A73 Benoni, Classical, 9.O-O (1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O)
Average Elo: 2350
Result: 1/1 = 100%

A89 Dutch, Leningrad, Main Variation with Nc6 (1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 Nc6)
Average Elo: 2335
Result: ½/1 = 50%

A90 Dutch (1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2)
Average Elo: 2390
Result: 1/1 = 100%

D32 Queen's Gambit Declined, Tarrasch (1.d4 d5 2.c4 e6 3.Nc3 c5)
Average Elo: 2440
Result: 0/1 = 0%

D36 Queen's Gambit Declined, Exchange, Positional line, 6.Qc2 (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2)
Average Elo: 2380
Result: 1/1 = 100%

A18 English, Mikenas-Carls (1.c4 Nf6 2.Nc3 e6 3.e4)
Average Elo: 0
Result: ½/1 = 50%

E44 Nimzo-Indian, Fischer Variation, 5.Ne2 (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2)
Average Elo: 2385
Result: ½/1 = 50%

A65 Benoni, 6.e4 (1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4)
Average Elo: 2355
Result: ½/1 = 50%

D17 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5)
Average Elo: 2385
Result: ½/1 = 50%

E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Ba6)
Average Elo: 2480
Result: ½/1 = 50%

B00 Uncommon King's Pawn Opening (1.e4)
Average Elo: 0
Result: 1/1 = 100%

E41 Nimzo-Indian (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5)
Average Elo: 2530
Result: ½/1 = 50%

E40 Nimzo-Indian, 4.e3 (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3)
Average Elo: 2585
Result: ½/1 = 50%

E89 King's Indian, Samisch, Orthodox Main line (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6 8.Nge2 cxd5)
Average Elo: 2090
Result: 1/1 = 100%

E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2)
Average Elo: 2590
Result: ½/1 = 50%

E09 Catalan, Closed (1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Nbd2)
Average Elo: 2380
Result: 1/1 = 100%

D47 Queen's Gambit Declined Semi-Slav (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4)
Average Elo: 2505
Result: ½/1 = 50%

E83 King's Indian, Samisch (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6)
Average Elo: 2100
Result: 1/1 = 100%

D27 Queen's Gambit Accepted, Classical (1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6)
Average Elo: 2555
Result: ½/1 = 50%

D13 Queen's Gambit Declined Slav, Exchange Variation (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5)
Average Elo: 2320
Result: ½/1 = 50%

A86 Dutch (1.d4 f5 2.c4 Nf6 3.g3)
Average Elo: 2185
Result: 1/1 = 100%

D43 Queen's Gambit Declined Semi-Slav (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6)
Average Elo: 2290
Result: 1/1 = 100%

D41 Queen's Gambit Declined, Semi-Tarrasch (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5)
Average Elo: 2365
Result: 1/1 = 100%

A41 Queen's Pawn Game (with ...d6) (1.d4 d6)
Average Elo: 2305
Result: ½/1 = 50%

E18 Queen's Indian, Old Main line, 7.Nc3 (1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3)
Average Elo: 2529
Result: 1/1 = 100%

A30 English, Symmetrical (1.c4 c5)
Average Elo: 2487
Result: 0/1 = 0%

B12 Caro-Kann Defense (1.e4 c6 2.d4)
Average Elo: 2166
Result: 1/1 = 100%

Uncommon Opening (1.g4, a3, h3, etc.)
Average Elo: 2314
Result: 0/1 = 0%

C15 French, Winawer (1.e4 e6 2.d4 d5 3.Nc3 Bb4)
Average Elo: 2529
Result: 1/1 = 100%

C88 Ruy Lopez (1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3)
Average Elo: 2419
Result: ½/1 = 50%

D15 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3)
Average Elo: 2445
Result: ½/1 = 50%

A31 English, Symmetrical, Benoni Formation (1.c4 c5 2.Nf3 Nf6 3.d4)
Average Elo: 0
Result: 1/1 = 100%

E62 King's Indian, Fianchetto (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3)
Average Elo: 2246
Result: 1/1 = 100%

C67 Ruy Lopez (1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4)
Average Elo: 2449
Result: ½/1 = 50%

B43 Sicilian, Kan, 5.Nc3 (1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3)
Average Elo: 2638
Result: ½/1 = 50%

D03 Torre Attack (Tartakower Variation) (1.d4 d5 2.Nf3 Nf6 3.Bg5)
Average Elo: 2370
Result: ½/1 = 50%

D38 Queen's Gambit Declined, Ragozin Variation (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4)
Average Elo: 2352
Result: 1/1 = 100%

C06 French, Tarrasch (1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4)
Average Elo: 2261
Result: 1/1 = 100%

B10 Caro-Kann (1.e4 c6)
Average Elo: 2250
Result: 0/1 = 0%

B30 Sicilian (1.e4 c5 2.Nf3 Nc6)
Average Elo: 2213
Result: 1/1 = 100%

Openings played as Black (93)

A30 English, Symmetrical (1.c4 c5)
Average Elo: 2437.86
Result: 2½/7 = 35.71%

B85 Sicilian, Scheveningen, Classical (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 8.f4 Nc6)
Average Elo: 2323
Result: 2/4 = 50%

A34 English, Symmetrical (1.c4 c5 2.Nc3)
Average Elo: 2305.67
Result: 3/4 = 75%

D85 Grunfeld (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5)
Average Elo: 2438.33
Result: 2½/3 = 83.33%

D40 Queen's Gambit Declined, Semi-Tarrasch (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5)
Average Elo: 2356.67
Result: 1/3 = 33.33%

E32 Nimzo-Indian, Classical (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2)
Average Elo: 2258.33
Result: 2/3 = 66.67%

B80 Sicilian, Scheveningen (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6)
Average Elo: 2430
Result: 1/3 = 33.33%

D00 Queen's Pawn Game (1.d4 d5)
Average Elo: 2285
Result: 3/3 = 100%

C11 French (1.e4 e6 2.d4 d5 3.Nc3 Nf6)
Average Elo: 2221.67
Result: 2/3 = 66.67%

B12 Caro-Kann Defense (1.e4 c6 2.d4)
Average Elo: 2343.33
Result: 1/3 = 33.33%

B22 Sicilian, Alapin (1.e4 c5 2.c3)
Average Elo: 2440
Result: 0/2 = 0%

Uncommon Opening (1.g4, a3, h3, etc.)
Average Elo: 2012
Result: 1/2 = 50%

E69 King's Indian, Fianchetto, Classical Main line (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 c6 9.h3)
Average Elo: 2442.5
Result: 0/2 = 0%

D94 Grunfeld (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3)
Average Elo: 2485
Result: 1½/2 = 75%

D86 Grunfeld, Exchange (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4)
Average Elo: 2480
Result: ½/2 = 25%

B82 Sicilian, Scheveningen (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.f4)
Average Elo: 2460
Result: 0/2 = 0%

B88 Sicilian, Fischer-Sozin Attack (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6)
Average Elo: 0
Result: 1½/2 = 75%

D78 Neo-Grunfeld, 6.O-O c6 (1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6)
Average Elo: 2339
Result: 1/2 = 50%

A08 King's Indian Attack (1.Nf3 d5 2.g3 c5 3.Bg2)
Average Elo: 2391
Result: 1/2 = 50%

A09 Reti Opening (1.Nf3 d5 2.c4)
Average Elo: 2454.5
Result: 1/2 = 50%

B13 Caro-Kann, Exchange (1.e4 c6 2.d4 d5 3.exd5 cxd5)
Average Elo: 2207
Result: 2/2 = 100%

D19 Queen's Gambit Declined Slav, Dutch (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O O-O 9.Qe2)
Average Elo: 2356
Result: 1/2 = 50%

C01 French, Exchange (1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nc3 Nf6 5.Bg5)
Average Elo: 2161.5
Result: 1½/2 = 75%

B53 Sicilian (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4)
Average Elo: 2400
Result: 1½/2 = 75%

B70 Sicilian, Dragon Variation (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6)
Average Elo: 2530
Result: 0/2 = 0%

B66 Sicilian, Richter-Rauzer Attack, 7...a6 (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6)
Average Elo: 2372
Result: 1/2 = 50%

A07 King's Indian Attack (1.Nf3 d5 2.g3)
Average Elo: 2325.5
Result: 1½/2 = 75%

A46 Queen's Pawn Game (1.d4 Nf6 2.Nf3)
Average Elo: 2350
Result: 1½/2 = 75%

E14 Queen's Indian (1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3)
Average Elo: 2442
Result: 0/2 = 0%

B97 Sicilian, Najdorf (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6)
Average Elo: 2185
Result: ½/2 = 25%

C12 French, McCutcheon (1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4)
Average Elo: 2287
Result: 1½/2 = 75%

E60 King's Indian Defense (1.d4 Nf6 2.c4 g6)
Average Elo: 2500
Result: ½/1 = 50%

E74 King's Indian, Averbakh, 6...c5 (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5)
Average Elo: 0
Result: 1/1 = 100%

B63 Sicilian, Richter-Rauzer Attack (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2)
Average Elo: 2460
Result: 0/1 = 0%

E17 Queen's Indian (1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7)
Average Elo: 0
Result: ½/1 = 50%

D99 Grunfeld Defense, Smyslov (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4 8.Be3)
Average Elo: 2400
Result: 1/1 = 100%

D87 Grunfeld, Exchange (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5)
Average Elo: 2535
Result: 0/1 = 0%

B25 Sicilian, Closed (1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6)
Average Elo: 0
Result: 1/1 = 100%

A61 Benoni (1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6)
Average Elo: 2330
Result: 1/1 = 100%

D90 Grunfeld (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3)
Average Elo: 2395
Result: ½/1 = 50%

A16 English (1.c4 Nf6 2.Nc3)
Average Elo: 2575
Result: 0/1 = 0%

D05 Queen's Pawn Game (1.d4 d5 2.Nf3 Nf6 3.e3 e6)
Average Elo: 0
Result: 1/1 = 100%

E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2)
Average Elo: 2310
Result: ½/1 = 50%

B81 Sicilian, Scheveningen, Keres Attack (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g4)
Average Elo: 2385
Result: 0/1 = 0%

D79 Neo-Grunfeld, 6.O-O, Main line (1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6 7.cxd5 cxd5)
Average Elo: 0
Result: 1/1 = 100%

B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Bb3 b5)
Average Elo: 2395
Result: 1/1 = 100%

B11 Caro-Kann, Two Knights, 3...Bg4 (1.e4 c6 2.Nc3 d5 3.Nf3 Bg4)
Average Elo: 2470
Result: 1/1 = 100%

B18 Caro-Kann, Classical (1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5)
Average Elo: 0
Result: 1/1 = 100%

B17 Caro-Kann, Steinitz Variation (1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7)
Average Elo: 2480
Result: 0/1 = 0%

B20 Sicilian (1.e4 c5)
Average Elo: 2165
Result: 1/1 = 100%

B84 Sicilian, Scheveningen (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6)
Average Elo: 2360
Result: ½/1 = 50%

B75 Sicilian, Dragon, Yugoslav Attack (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3)
Average Elo: 2430
Result: ½/1 = 50%

B99 Sicilian, Najdorf, 7...Be7 Main line (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7)
Average Elo: 2515
Result: 0/1 = 0%

D17 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5)
Average Elo: 2500
Result: ½/1 = 50%

B38 Sicilian, Accelerated Fianchetto, Maroczy Bind, 6.Be3 (1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3)
Average Elo: 2510
Result: 0/1 = 0%

D91 Grunfeld, 5.Bg5 (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5)
Average Elo: 2480
Result: ½/1 = 50%

C15 French, Winawer (1.e4 e6 2.d4 d5 3.Nc3 Bb4)
Average Elo: 2470
Result: 1/1 = 100%

A37 English, Symmetrical (1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3)
Average Elo: 2545
Result: 0/1 = 0%

A29 English, Four Knights, Kingside Fianchetto (1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3)
Average Elo: 2475
Result: ½/1 = 50%

B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack (1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7)
Average Elo: 2550
Result: 1/1 = 100%

C84 Ruy Lopez, Closed (1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7)
Average Elo: 2530
Result: 0/1 = 0%

B76 Sicilian, Dragon, Yugoslav Attack (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O)
Average Elo: 2490
Result: 0/1 = 0%

E18 Queen's Indian, Old Main line, 7.Nc3 (1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3)
Average Elo: 2290
Result: 1/1 = 100%

D93 Grunfeld, with Bf4 & e3 (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4 O-O 6.e3)
Average Elo: 2435
Result: 0/1 = 0%

E54 Nimzo-Indian, 4.e3, Gligoric System (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4)
Average Elo: 2555
Result: 0/1 = 0%

E44 Nimzo-Indian, Fischer Variation, 5.Ne2 (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2)
Average Elo: 0
Result: ½/1 = 50%

B33 Sicilian (1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4)
Average Elo: 2515
Result: 0/1 = 0%

B57 Sicilian (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4)
Average Elo: 2310
Result: 1/1 = 100%

B26 Sicilian, Closed, 6.Be3 (1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3)
Average Elo: 0
Result: 0/1 = 0%

C02 French, Advance (1.e4 e6 2.d4 d5 3.e5)
Average Elo: 2425
Result: 0/1 = 0%

B10 Caro-Kann (1.e4 c6)
Average Elo: 2350
Result: 0/1 = 0%

E11 Bogo-Indian Defense (1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+)
Average Elo: 2173
Result: 1/1 = 100%

B31 Sicilian, Rossolimo Variation (1.e4 c5 2.Nf3 Nc6 3.Bb5 g6)
Average Elo: 2395
Result: 1/1 = 100%

B01 Scandinavian (1.e4 d5)
Average Elo: 2526
Result: 0/1 = 0%

D27 Queen's Gambit Accepted, Classical (1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6)
Average Elo: 2464
Result: 0/1 = 0%

B23 Sicilian, Closed (1.e4 c5 2.Nc3)
Average Elo: 2285
Result: 1/1 = 100%

A28 English (1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6)
Average Elo: 2266
Result: 0/1 = 0%

D45 Queen's Gambit Declined Semi-Slav (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3)
Average Elo: 2604
Result: ½/1 = 50%

E49 Nimzo-Indian, 4.e3, Botvinnik System (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 Bxc3+ 7.bxc3)
Average Elo: 2498
Result: ½/1 = 50%

D36 Queen's Gambit Declined, Exchange, Positional line, 6.Qc2 (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2)
Average Elo: 2419
Result: 0/1 = 0%

E12 Queen's Indian (1.d4 Nf6 2.c4 e6 3.Nf3 b6)
Average Elo: 2294
Result: 1/1 = 100%

B47 Sicilian, Taimanov (Bastrikov) Variation (1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7)
Average Elo: 2247
Result: 0/1 = 0%

A19 English, Mikenas-Carls, Sicilian Variation (1.c4 Nf6 2.Nc3 e6 3.e4 c5)
Average Elo: 2395
Result: 1/1 = 100%

B92 Sicilian, Najdorf, Opocensky Variation (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2)
Average Elo: 2424
Result: ½/1 = 50%

B50 Sicilian (1.e4 c5 2.Nf3 d6)
Average Elo: 2211
Result: ½/1 = 50%

B48 Sicilian, Taimanov Variation (1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3)
Average Elo: 2236
Result: 1/1 = 100%

B46 Sicilian, Taimanov Variation (1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6)
Average Elo: 2464
Result: ½/1 = 50%

A40 Queen's Pawn Game (1.d4)
Average Elo: 2420
Result: ½/1 = 50%

E05 Catalan, Open, Classical line (1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Be7)
Average Elo: 2286
Result: ½/1 = 50%

A15 English (1.c4 Nf6)
Average Elo: 1666
Result: 1/1 = 100%

C26 Vienna (1.e4 e5 2.Nc3 Nf6)
Average Elo: 2127
Result: 1/1 = 100%

C47 Four Knights (1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6)
Average Elo: 2428
Result: 0/1 = 0%

E06 Catalan, Closed, 5.Nf3 (1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3)
Average Elo: 2170
Result: ½/1 = 50%