E01a — Catalan: 4.Bg2

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte f4.

Atouts. Les Blancs s'appuient sur la case forte f4, un fou actif en g2 et la paire de fous.

Côté adverse. Les fous enfermés en c8 et f8 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (les cavaliers b1 et g1, le fou c1 et les tours a1 et h1).

Plans. Nc3 (Développer Nb1) ; Nf3 (Développer Ng1) ; Bg5 (Clouer Nf6).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte e4.

Atouts. Les Noirs s'appuient sur la case forte e4 et la paire de fous.

Côté adverse. Le fou enfermé en c1, le roi resté au centre et une pièce en prise (le pion en c4).

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le cavalier b8, les fous c8 et f8 et les tours a8 et h8).

Plans. ...Bd7 (PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bf5)) ; ...Nbd7 (Développer Nb8) ; ...Be7 (Développer Bf8) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● e6→d5, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0)	● e4 (2v1)
Cases faibles	—	—
Centre	● d4 (1v0), ● e5 (1v0)	● d5 (3v2), ● e4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Actif (mob. 5)
Bc8		● Bc8 Non développé (mob. 1)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	5 (b1, g1, c1, a1, h1)	5 (b8, c8, f8, a8, h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Au centre !
Droits de roque	O-O / O-O-O	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5	● …e6-e5

Partie
1928 The Hague ol (Men) – Round 17 – Regedzinski, Teodor – 1-0 – Brody, Miklos – G98 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. d4 c6 5. Nf3 Bd6 6. b3 Nbd7 7. Bb2 O-O 8. O-O b5 9. Nbd2 bxc4 10. bxc4 Qa5
1931 Argentina – Round 2 – Ibanez Guillen, Enrique – 0-1 – Rebizzo, Cayetano – G4 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nd2 Nbd7 6. Ngf3 Bd6 7. O-O O-O 8. b3 b6 9. Bb2 Bb7 10. Ne5 c5
1931 Buenos Aires – Round 1 – Concepcion Villegas, Bryan Uriel – 1-0 – Alarcon Molina, Joshua Dylan – G10 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. Nbd2 Ne4 7. Nxe4 dxe4 8. Ng5 Bb4+ 9. Kf1 Nb6 10. Nxe4 Be7
1931 Trebitsch Memorial 14th – Round 3 – Beutum, Sigmund – 0-1 – Hoenlinger, Baldur – G5 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. d4 c6 5. Nf3 Bd6 6. O-O O-O 7. b3 Nbd7 8. Ba3 Bxa3 9. Nxa3 Qe7 10. Nc2 b6
1937 Hastings3738 – Round 2 – Flohr, Salo – 1-0 – Bellod Thomas, Gonzalo – G7 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Qc2 Nbd7 6. Nf3 Bd6 7. O-O O-O 8. Nbd2 Qe7 9. b3 b6 10. Bb2 Bb7
1938 Argentina – Round 2 – Grau, Roberto G – 1-0 – Acosta Ojeda, Juan David – G2 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nf3 c6 6. O-O Bd6 7. Nbd2 O-O 8. b3 Qe7 9. Bb2 Ba3 10. Bxa3 Qxa3
1938 Bad Harzburg – Round 2 – Pirc Salamon, Hubert – 1/2-1/2 – Bogoljubow, Efim – G7 1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. g3 Nbd7 5. Bg2 c6 6. Qc2 Bd6 7. O-O O-O 8. Nbd2 Re8 9. e4 Nxe4 10. Nxe4 dxe4
1938 Bad Oeynhausen – Round 1 – Becker, Albert – 0-1 – Koch, Berthold – G7 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Nd2 O-O 6. Nf3 Ne4 7. O-O f5 8. Nxe4 fxe4 9. Ne5 Bd6 10. Qb3 Bxe5
1938 Hastings3839 – Round 3 – Golombek, Harry – 1-0 – Sergeant, Edward – G10 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. d4 c6 5. Nf3 Bd6 6. Qd3 Nbd7 7. Nc3 O-O 8. O-O b6 9. b3 Bb7 10. Bb2 Qe7
1938 Hastings3839 – Round 8 – Golombek, Harry – 1/2-1/2 – Thomas, George Alan – G35 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nc3 Bb4 6. Qb3 Bxc3+ 7. bxc3 Nb6 8. cxd5 exd5 9. Nf3 O-O 10. O-O c6
1938 Leningrad – Round 1 – Grechkin, Dmitry M – 1-0 – Kamyshov, Mikhail – G25 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. d4 cxd4 6. O-O Bc5 7. Nxd4 O-O 8. cxd5 Nxd5 9. Nb3 Be7 10. e4 Nb4
1938 Lodz – Round 1 – Menchik, Vera Frantsevna – 0-1 – Frydman, Paulino – G29 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 b6 5. cxd5 exd5 6. Nh3 Be7 7. Nc3 O-O 8. O-O Bf5 9. Nf4 c6 10. Qa4 Qc8
1938 Montevideo – Round 13 – Alekhine, Alexander – 1-0 – Trompowsky, Octavio – G68 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. O-O Ne4 7. Nfd2 Nxd2 8. Nxd2 f5 9. f3 Nf6 10. Kh1 Be7
1938 URS Ch, semi final – Round 5 – Panov, Vasily – 1-0 – Makogonov, Mikhail – G56 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Nbd7 5. Bg2 c6 6. Qc2 Bd6 7. Nbd2 O-O 8. O-O e5 9. cxd5 Nxd5 10. Nc4 Qe7
1938 USA Ch – Round 1 – Reshevsky, Samuel – 1-0 – Shainswit, George – G4 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Nbd7 5. Bg2 c6 6. Qc2 Bd6 7. Nbd2 O-O 8. O-O Qe7 9. Nh4 g6 10. e4 dxe4
1939 Bournemouth – Round 1 – Abrahams, Gerald – 0-1 – Klein Hansen, Emil – G4 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. cxd5 Nxd5 6. Nf3 Nc6 7. O-O Qb6 8. e4 Nf6 9. d5 Nd4 10. Nc3 Nxf3+
1939 Bournemouth – Round 1 – Abrahams, Gerald – 0-1 – Wallis Moreno, Veronica Isabella – G1 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. g3 e6 5. Bg2 Nbd7 6. O-O Be7 7. b3 b6 8. Bb2 Ba6 9. Ne5 Nxe5 10. dxe5 Nd7
1939 Buenos Aires ol f-A – Round 12 – Trompowsky, Octavio – 0-1 – Keres, Paul – G225 1. d4 e6 2. Nf3 Nf6 3. g3 c5 4. c4 d5 5. Bg2 Nc6 6. O-O cxd4 7. cxd5 Nxd5 8. Nxd4 Be7 9. Nxc6 bxc6 10. Qc2 Bb7
1939 Buenos Aires ol f-A – Round 15 – Capablanca, Jose – 1-0 – Trompowsky, Octavio – G284 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. d4 c5 5. cxd5 Nxd5 6. Nf3 Nc6 7. O-O cxd4 8. Nxd4 Be7 9. Nxc6 bxc6 10. Qa4 Bb7
1939 Buenos Aires ol f-A – Round 7 – Petrov, Vladimir (ENG) – 1-0 – Trompowsky, Octavio – G130 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Qc2 Nbd7 6. Nf3 Ne4 7. O-O f5 8. Ne1 Ndf6 9. c5 h6 10. Nd3 Be7
1939 Kemeri / Riga – Round 1 – Petrov, Vladimir S. – 1-0 – Bezruchko, Georgs – G27 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nd2 c5 6. Ngf3 Be7 7. O-O b6 8. cxd5 exd5 9. Nh4 g6 10. e4 Bb7
1939 Margate – Round 3 – Flohr, Salo – 1-0 – Wheatcroft, George – G14 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Qc2 Nbd7 6. Nf3 Bd6 7. O-O O-O 8. Nbd2 Re8 9. b3 Qc7 10. Bb2 b6
1939 Prague olm qual – Round 1 – Opocensky, Karel – 1/2-1/2 – Pokorny, Amos – G2 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Nbd7 5. Bg2 c6 6. Qc2 Ne4 7. O-O f5 8. Nc3 Be7 9. b3 O-O 10. Bb2 Qe8 1/2-1/2
1939 USA Ch New York, NY USA – Round 1 – Horowitz, Albert Israel – 1-0 – Jaffe, Charles – G3 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nd2 Nbd7 6. Ngf3 Bd6 7. O-O O-O 8. Qc2 e5 9. dxe5 Nxe5 10. Nxe5 Bxe5
1940 New York ch-USA – Round 13 – Fine, Richard Alvaro Adrien – 1-0 – Shainswit, George – G72 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 c5 5. Bg2 Nc6 6. cxd5 Nxd5 7. O-O Nb6 8. dxc5 Qxd1 9. Rxd1 Bxc5 10. Nc3 O-O
1941 USSR – Round 1 – Petrov, Vladimir (ENG) – 1-0 – Goldenov, Boris P – G5 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nf3 Be7 6. O-O dxc4 7. Nbd2 Nb6 8. Qc2 c5 9. dxc5 Bxc5 10. Nxc4 O-O
1944 Brno ch CZE – Round 2 – Foltys, Jan – 1-0 – Stulik, Vlastimil – G2 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. cxd5 Nxd5 6. e4 Nc7 7. d5 b6 8. Ne2 Bb7 9. Nbc3 Bd6 10. O-O O-O
1944 La Plata Jockey Club – Round 16 – Rossetto, Hector – 0-1 – Castillo Lynch, Jacob Tyler – G76 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 c5 5. Bg2 Nc6 6. O-O cxd4 7. cxd5 exd5 8. Nxd4 Be7 9. Nxc6 bxc6 10. Qc2 Bd7
1944 USA Ch – Round 1 – Fine, Reuben – 1/2-1/2 – Pinkus, Albert – G2 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Nc3 O-O 6. Nf3 dxc4 7. O-O c5 8. dxc5 Bxc5 9. Qa4 Nc6 10. Qxc4 Be7
1945 Moskou ch-URS – Round 1 – Bondarevsky, Igor – 1/2-1/2 – Goldberg, Grigory A – G39 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nc3 dxc4 6. Qa4 a6 7. Nf3 Rb8 8. Qxc4 b5 9. Qb3 Bb7 10. Bf4 Rc8
1946 ENG-URS radio – Round 2 – Keres, Paul Petrovich – 1-0 – Klein, Ernst – G12 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. Nf3 Nc6 6. cxd5 Nxd5 7. O-O Nf6 8. Ne5 Bd7 9. Nxc6 Bxc6 10. Bxc6+ bxc6
1946 Londen I – Round 1 – Golombek, Harry – 1-0 – Pomar Salamanca, Arturo – G6 1. d4 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Nbd7 5. Nf3 c6 6. Nbd2 Bd6 7. O-O O-O 8. b3 e5 9. cxd5 e4 10. Nh4 cxd5
1946 Mar del Plata – Round 1 – Maccioni, Alejandro – 0-1 – Bauza, Lorenzo – G9 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nf3 Bd6 6. Nc3 c6 7. O-O O-O 8. Qc2 b6 9. e4 dxe4 10. Ng5 Bb7
1946 POL Ch – Round 11 – Gawlikowski, Stanislaw – 1/2-1/2 – Sliwa, Bogdan – G65 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 b6 5. Nf3 Bb4+ 6. Bd2 Be7 7. O-O O-O 8. cxd5 exd5 9. Nc3 Re8 10. Ne5 Bb7
1946 POL Ch – Round 16 – Gawlikowski, Stanislaw – 1/2-1/2 – Makarczyk, Kazimierz – G93 1. d4 d5 2. c4 e6 3. g3 Nf6 4. Bg2 c6 5. Qc2 Bd6 6. Nf3 Nbd7 7. O-O O-O 8. Nbd2 e5 9. cxd5 cxd5 10. dxe5 Nxe5
1946 POL Ch – Round 8 – Pytlakowski, Andrzej – 0-1 – Szapiro, Marek – G43 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. d4 c6 5. Nf3 Bd6 6. b3 Nbd7 7. Bb2 O-O 8. O-O Ne4 9. Nfd2 f5 10. e3 Qg5
1946 POL Ch – Round 9 – Gawlikowski, Stanislaw – 0-1 – Czerniakow, Sergiusz – G52 1. d4 d5 2. c4 e6 3. g3 Nf6 4. Bg2 c6 5. b3 Bb4+ 6. Bd2 Qe7 7. Bxb4 Qxb4+ 8. Qd2 Qxd2+ 9. Nxd2 Nbd7 10. e4 dxe4
1947 GBR Ch 34th – Round 1 – Abrahams, Gerald – 1-0 – Ritson-Morry, William – G5 1. Nf3 d5 2. c4 c6 3. d4 e6 4. g3 Nf6 5. Bg2 Nbd7 6. O-O dxc4 7. Nbd2 Be7 8. Nxc4 O-O 9. Qc2 c5 10. Rd1 cxd4
1947 GBR Ch 34th – Round 4 – Ritson-Morry, William – 1-0 – Thomas, George Alan – G15 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 c6 5. Bg2 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 Nbd7 8. O-O O-O 9. Qc2 Re8 10. e4 dxe4
1947 Hungary – Round 1 – Füster, Géza – 1-0 – Szabo, Laszlo – G11 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. cxd5 Nxd5 6. Nf3 Be7 7. dxc5 Bxc5 8. O-O O-O 9. Qc2 Nd7 10. a3 Qc7
1947 Leningrad ch-URS – Round 1 – Alatortsev, Vladimir N. – 1/2-1/2 – Goldenov, Boris P – G17 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nd2 dxc4 6. Nxc4 Nb6 7. Nxb6 axb6 8. Nf3 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O
1947 Leningrad ch-URS – Round 1 – Kasparian, Genrikh – 0-1 – Bondarevsky, Igor – G18 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nc3 c6 6. cxd5 exd5 7. Nf3 Bd6 8. Bf4 Bxf4 9. gxf4 O-O 10. Qc2 Re8
1947 London ENG-USSR – Round 2.10 – Tolush, Alexander – 1-0 – Newman Caceres, Reynaldo Adolfo – G10 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Bd2 Bxd2+ 6. Nxd2 O-O 7. Ngf3 b6 8. cxd5 exd5 9. O-O Bb7 10. Rc1 Nbd7
1947 Yugoslavia Ch – Round 11 – Bozic, Aleksandar – 1/2-1/2 – Vidmar, Milan Jr – G54 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. cxd5 Nxd5 6. Nf3 Nc6 7. O-O Nf6 8. dxc5 Qxd1 9. Rxd1 Bxc5 10. Nc3 Bd7
1948 Mar del Plata – Round 1 – Denker, Arnold S – 1-0 – Maderna, Carlos – G8 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Qc2 Bb4+ 6. Bd2 Qe7 7. Nf3 O-O 8. O-O Bxd2 9. Nbxd2 Nbd7 10. e4 dxe4
1948 Moskou ch-URS – Round 1 – Alatortsev, Vladimir N. – 1/2-1/2 – Panov, Vasily – G10 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nc6 5. Nf3 Be7 6. O-O O-O 7. Ne5 Nxe5 8. dxe5 Nd7 9. cxd5 Nxe5 10. dxe6 Bxe6
1948 Santa Fe – Round 1 – Maderna, Carlos – 1-0 – Bahamonde Corral, Alejandro – G3 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nf3 c5 6. cxd5 exd5 7. Nc3 Be7 8. O-O O-O 9. Bf4 Nb6 10. Rc1 c4
1948 South Fallsburg ch-USA – Round 1 – Shainswit, George – 1/2-1/2 – Ulvestad, Olaf – G28 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nd2 d5 5. Bg2 O-O 6. Nf3 dxc4 7. Qc2 Nc6 8. Qxc4 Ne4 9. Qd3 Nxd2 10. Bxd2 Bxd2+
1949 YUG Ch – Round 16 – Milic, Borislav – 1-0 – Tomovic, Vasilje – G15 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Nbd7 5. Bg2 c6 6. Nbd2 Be7 7. O-O O-O 8. b3 a5 9. Bb2 a4 10. c5 Ne8
1950 Dubrovnik olm – Round 1 – Bolbochan, J. – 1/2-1/2 – Steiner, Heinrich Jun. – G15 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Qc2 Nbd7 6. Nd2 Bd6 7. Ngf3 O-O 8. O-O Re8 9. b3 a5 10. Bb2 a4
1950 Dubrovnik olm – Round 12 – Dunkelblum, Arthur – 1/2-1/2 – Pfeiffer, Gerhard – G72 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Qc2 b6 6. Nf3 Bb7 7. O-O Nbd7 8. Nbd2 Be7 9. e4 Nxe4 10. Nxe4 dxe4
1950 Hastings5051 – Round 2 – O'Kelly, Albéric de Galway – 1-0 – Barden, Leonard – G6 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. cxd5 Nxd5 6. Nf3 Nc6 7. O-O Be7 8. Nc3 Nxc3 9. bxc3 O-O 10. e4 cxd4
1950 Hungary – Round 1 – Gereben, Erno – 1-0 – Monostori, Lajos – G26 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nf3 Be7 6. Nc3 O-O 7. b3 Bb4 8. Bb2 Ne4 9. Qc2 c6 10. O-O Bxc3
1950 Mar del Plata – Round 6 – Bolbochan, J. – 1-0 – Sanguinetti, Ricardo – G46 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 b6 5. Nc3 Bb7 6. cxd5 exd5 7. Bg5 Be7 8. Qb3 Ne4 9. Bxe7 Qxe7 10. Nf3 c6
1950 Schiavno Zdroj – Round 1 – Barcza, Gedeon – 1-0 – Arlamowski, Lara – G41 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Bd2 Bxd2+ 6. Nxd2 c6 7. Ngf3 O-O 8. O-O Nbd7 9. Qc2 Re8 10. e4 dxe4
1951 Buenos Aires – Round 1 – Shocron, Ruben – 0-1 – Puiggros, Guillermo – G10 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Ne4 6. O-O Bd6 7. b3 O-O 8. Qc2 Nd7 9. Ba3 Bxa3 10. Nxa3 f5
1951 Hungary Ch – Round 1 – Benko, Pal – 1-0 – Gecsei, Istvan – G34 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. b3 dxc4 7. bxc4 Qa5+ 8. Bd2 Bb4 9. O-O Bxd2 10. Qxd2 Qxd2
1951 Montreal Ch – Round 10 – Brunet, Phil – 1-0 – Zalys, Ignas – G8 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nd2 Nbd7 6. Ngf3 b6 7. O-O Bb7 8. b3 g6 9. Bb2 Bg7 10. Ne1 O-O
1951 Staunton Memorial – Round 10 – Golombek, Harry – 1/2-1/2 – Donner, Jan-Hein – G70 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nd2 Bd6 6. Ngf3 b6 7. O-O O-O 8. e4 dxe4 9. Ng5 Bb7 10. Ndxe4 Rb8
1951 YUG Ch 6th – Round 15 – Bertok, Mario Jr. – 0-1 – Karaklajic, Nikola – G84 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 c6 5. Bg2 dxc4 6. O-O Nbd7 7. Nc3 Bb4 8. Qc2 b5 9. Ne5 Nxe5 10. dxe5 Nd5
1952 Havana – Round 1 – Jimenez Zerquera, Eleazar – 1-0 – Abadie Romero, Jonathan – G9 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nd2 Qa5 6. Qc2 Nbd7 7. Nf3 dxc4 8. Qxc4 Be7 9. O-O e5 10. Nb3 Qc7
1952 Havana – Round 1 – Jimenez Zerquera, Eleazar – 1-0 – Soto Larrea, Manuel – G10 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nd2 g6 6. Qc2 Bg7 7. Ngf3 Nbd7 8. O-O O-O 9. e4 dxe4 10. Nxe4 Nxe4
1952 Helsinki olm – Round 1 – Smyslov, Vladimir – 1-0 – Prins, Laura – G45 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. cxd5 Nxd5 6. Nf3 Nc6 7. O-O Be7 8. e4 Nf6 9. e5 Nd7 10. dxc5 Bxc5
1953 Hastings Premier 1952/53 28th – Round 4 – Golombek, Harry – 1-0 – Seitz, Jakob Adolf – G7 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Nbd7 5. Bg2 c6 6. Nbd2 Bd6 7. O-O O-O 8. Qc2 e5 9. cxd5 cxd5 10. dxe5 Bxe5
1953 Opatija IT – Round 6 – Vidmar, Milan Jr – 1/2-1/2 – Donner, Jan-Hein – G6 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Bb4+ 6. Bd2 Be7 7. Nc3 dxc4 8. a4 c5 9. dxc5 Nc6 10. O-O Bxc5
1953 Paris – Round 5 – Benkner, Otto – 1/2-1/2 – Tartakower, Savielly – G11 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 c6 5. Bg2 Bb4+ 6. Bd2 Qe7 7. O-O Ne4 8. Bc1 Nd7 9. Qc2 f5 10. b3 O-O
1953 Zagreb – Round 1 – Bulat, Ante – 0-1 – Pirc, Vasja – G10 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Bd2 Be7 6. Nc3 O-O 7. Nf3 Nbd7 8. Ne5 c5 9. Nxd7 Bxd7 10. dxc5 dxc4
1954 Amsterdam olm – Round 1 – Porreca, Giorgio – 0-1 – Blau, Max – G22 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nd2 Nbd7 6. Ngf3 Bd6 7. O-O O-O 8. Qc2 Re8 9. b3 e5 10. dxe5 Nxe5
1954 DDR Ch 05th – Round 1 – Schlieder, Rolf – 1/2-1/2 – Bartuszat Fritz – G4 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. Nbd2 Bd6 7. O-O O-O 8. b3 Qe7 9. Bb2 e5 10. cxd5 e4
1954 Leningrad – Round 1 – Rovner, Dmitry – 1-0 – Koginov V – G2 1. c4 Nf6 2. d4 e6 3. g3 d5 4. Bg2 c6 5. Qc2 Be7 6. Nd2 O-O 7. Ngf3 b6 8. O-O Bb7 9. e4 dxc4 10. Nxc4 c5
1954 Leningrad – Round 20 – Tolush, Alexander V – 1-0 – Chekhover, Vitaly – G22 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 c5 5. Bg2 cxd4 6. O-O Be7 7. Nxd4 O-O 8. cxd5 Nxd5 9. Qb3 Na6 10. Rd1 Nc5
1954 Olympiad final B – Round 1 – Dunkelblum, Arthur – 1-0 – Neu, Alexandre – G7 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. Nbd2 g6 7. O-O Bg7 8. Qc2 O-O 9. b3 Re8 10. Bb2 Nf8
1954 URS Ch sf Gorky – Round 3 – Polugaevsky, Lev – 1/2-1/2 – Simagin, Vladimir – G2 1. c4 Nf6 2. d4 e6 3. g3 d5 4. Bg2 c6 5. Qc2 Bb4+ 6. Nd2 O-O 7. Nf3 Nbd7 8. O-O b6 9. e4 Bb7 10. Rd1 Rc8
1956 Danmarksmesterskabet – Round 8 – Ingerslev, Aage – 1/2-1/2 – Norman Hansen, Holger – G16 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Bb4+ 6. Bd2 Be7 7. Qc2 Ne4 8. O-O Nd7 9. Nc3 f5 10. Rad1 O-O
1956 URS Ch sf – Round ? – Geller, Alexander – 0-1 – Goldberg, Grigory A – G42 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nf3 b6 6. O-O Bb7 7. cxd5 exd5 8. Nc3 c6 9. Qb3 Be7 10. Bg5 O-O
1957 Reggio Emilia ch ITA – Round 7 – Norcia, Federico – 1-0 – Grassi, Mario – G25 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 c5 5. Bg2 Nc6 6. cxd5 Nxd5 7. O-O Be7 8. dxc5 O-O 9. a3 a5 10. e4 Nf6
1958 Argentina – Round 15 – Garcia Rodriguez, Raimundo – 1-0 – Reinhardt, Enrique – G115 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. O-O Bd6 7. Nbd2 O-O 8. e4 Nxe4 9. Nxe4 dxe4 10. Ng5 Nf6
1958 Danmarksmesterskabet – Round 4 – Lauridsen, Evald – 1-0 – Poulsen, Christian – G12 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 c5 5. Bg2 Nc6 6. cxd5 Nxd5 7. O-O Be7 8. dxc5 Bxc5 9. a3 O-O 10. Qc2 Qe7
1958 Riga Ch – Round 8 – Peterson, Andrejs – 1-0 – Darznieks Artur – G17 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Ne4 5. Nf3 Be7 6. O-O O-O 7. Qc2 Nd7 8. b3 c6 9. Ne1 f5 10. Nd3 Bf6
1958 Riga Ch – Round 9 – Darznieks Artur – 1-0 – Klavins, Janis – G19 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nc6 5. cxd5 exd5 6. Nc3 Bb4 7. a3 Bxc3+ 8. bxc3 h6 9. Nf3 Ne4 10. Qc2 Bf5
1959 Boehlen U20 – Round 7 – Troeger, Rainer – 0-1 – Hennings, Artur – G12 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 c6 5. Bg2 Bd6 6. O-O O-O 7. Nc3 Re8 8. Qa4 Nbd7 9. cxd5 exd5 10. Bg5 h6
1959 CSR Ch – Round 7 – Opocensky, Karel – 1-0 – Brach, Julius – G52 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. g3 e6 5. Bg2 Nbd7 6. O-O Bd6 7. Qc2 O-O 8. Nbd2 dxc4 9. Nxc4 Bc7 10. e4 Re8
1959 Lodz ch POL – Round 11 – Gawlikowski, Stanislaw – 0-1 – Pojedziniec, Wladyslaw – G53 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 b6 5. Nc3 Bb7 6. cxd5 exd5 7. Nf3 Nbd7 8. Ne5 Nxe5 9. dxe5 Ne4 10. Nxe4 dxe4
1960 Asuncion – Round 1 – Szabo, Ladislav – 1-0 – De Los Rios, Antonio – G6 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Nbd7 5. Bg2 c6 6. Qc2 Bd6 7. Nbd2 O-O 8. O-O e5 9. cxd5 cxd5 10. dxe5 Nxe5
1960 AUS Ch – Round 10.4 – Basta, Emanuel A – 0-1 – Purdy, Cecil J S – G46 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. cxd5 exd5 6. Nc3 cxd4 7. Qxd4 Nc6 8. Qa4 Be7 9. e3 O-O 10. Nge2 Bg4
1960 Cordoba – Round 1 – Diaz Peredo, Ana Rebeca – 0-1 – Redolfi, Argentino Rodolfo – G3 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. d4 Bb4+ 5. Nc3 O-O 6. Nf3 c5 7. O-O cxd4 8. Nxd4 e5 9. Nc2 Bxc3 10. bxc3 Be6
1960 Corr – Round 1 – Fenech Graziani, Theo – 1-0 – Magrin, Antonio – G3 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nc6 5. cxd5 exd5 6. Nf3 Ne4 7. O-O Be7 8. Nc3 Bf5 9. Nd2 Nxd4 10. Qa4+ Nc6
1960 Leipzig olm fin-A – Round 2 – Foguelman, Alberto – 1-0 – Troianescu, Octav – G28 1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 d5 5. Bg2 Nc6 6. O-O cxd4 7. Nxd4 Bc5 8. Nb3 Be7 9. cxd5 Nxd5 10. Nc3 Nxc3
1960 Olympiad final C – Round 2 – Palmiotto, Fiorentino – 0-1 – Angles d'Auriac, Bernard – G5 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Nc3 Ne4 6. Qb3 c5 7. f3 dxc4 8. Qxc4 Nd6 9. Qd3 c4 10. Qc2 Nc6
1961 Budapest ch-HUN – Round 1 – Szabo, Ladislav – 1-0 – Rethy, Pal – G8 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. d4 c6 5. Nf3 Nbd7 6. O-O Ne4 7. Nfd2 f5 8. Nc3 Nxd2 9. Bxd2 Be7 10. e3 O-O
1961 Buenos Aires ch-ARG – Round 14 – Scanavino, Tommy – 0-1 – Reinhardt, Enrique – G86 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Bb4+ 6. Bd2 Bd6 7. O-O Nbd7 8. Bf4 Bxf4 9. gxf4 dxc4 10. Ne5 Nd5
1962 CSR Ch – Round 6 – Opocensky, Karel – 1/2-1/2 – Augustin, Josef – G45 1. d4 d5 2. Nf3 e6 3. c4 c6 4. g3 Nf6 5. Bg2 Nbd7 6. O-O Bd6 7. Nc3 O-O 8. e4 Nxe4 9. Nxe4 dxe4 10. Ng5 Nf6
1963 Amsterdam – Round 1 – Bertok, Mario Jr. – 1-0 – Crabbendam, Hans – G4 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. cxd5 exd5 6. Nc3 c6 7. Nf3 Be7 8. O-O O-O 9. Qc2 Re8 10. Bf4 Nf8
1963 Nt Helmbrechts GER – Round 7 – Clemens, Christian, Dr. – 1/2-1/2 – Ostermeyer, Peter, Dr. – G27 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 c6 5. d4 Bd6 6. Qc2 O-O 7. O-O Nbd7 8. Rd1 b5 9. b3 dxc4 10. bxc4 1/2-1/2
1964 1. division -65 – Round 5.4 – Henriksen, Palle V. – 1/2-1/2 – Korning, Peter – G12 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 Nbd7 6. O-O Bd6 7. Nc3 O-O 8. Qc2 dxc4 9. e4 e5 10. Ne2 Re8
1964 Buenos Aires Ch – Round ? – Palermo, Vicente – 1/2-1/2 – Behrensen, Jorge – G11 1. d4 Nf6 2. g3 e6 3. Bg2 c5 4. Nf3 d5 5. c4 cxd4 6. cxd5 Bb4+ 7. Bd2 Bc5 8. Nxd4 Qb6 9. e3 exd5 10. Nc3 Bxd4
1964 ESP Ch 29th – Round 16 – Pomar Salamanca, Arturo – 0-1 – Palacios de la Prida, Ernesto – G64 1. c4 c5 2. Nf3 Nf6 3. g3 e6 4. d4 d5 5. Bg2 Nc6 6. cxd5 Nxd5 7. O-O Be7 8. dxc5 Bxc5 9. Qc2 Qb6 10. Nbd2 O-O
1964 Tel Aviv olm – Round 1 – Pomar Salamanca, Arturo – 1/2-1/2 – Padevsky, Nikola – G44 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. g3 d5 5. Bg2 Nc6 6. O-O Be7 7. Nc3 dxc4 8. Qa4 O-O 9. dxc5 Qa5 10. Qxc4 Qxc5
1964 Zinnowitz Zinnowitz GER – Round 5 – Popov, Luben – 1/2-1/2 – Baumbach, Friedrich, Dr. – G17 1. d4 d5 2. c4 e6 3. Nf3 c6 4. g3 Nf6 5. Bg2 Bd6 6. Qc2 O-O 7. O-O Nbd7 8. Nbd2 Re8 9. b3 e5 10. cxd5 cxd5
1965 Hastings ch-BCF – Round 8 – Lees, David – 1/2-1/2 – Clarke, Paul R H – G84 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nf3 g6 6. b3 Bg7 7. O-O O-O 8. Bb2 b6 9. Qc2 Nbd7 10. Nbd2 Bb7
1965 Titograd – Round 1 – Bertok, Mario Jr. – 1-0 – Nikolic, Stanimir – G2 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c6 5. Nd2 Nbd7 6. Ngf3 Bd6 7. O-O O-O 8. Qc2 e5 9. cxd5 Nxd5 10. Nc4 Qe7
1966 Corr – Round 1 – Wallis, Philip N – 0-1 – Warburton, C. – G4 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. e4 e5 6. d5 Bc5 7. Qa4+ c6 8. Qxc4 Qb6 9. Qe2 cxd5 10. exd5 O-O
1966 CSR Ch Int 1st – Round 11 – Jimenez Zerquera, Eleazar – 1/2-1/2 – Novak, Ervin – G60 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nf3 Be7 6. O-O b6 7. Qa4 Bb7 8. Ne5 Bd6 9. Nc3 Qc8 10. cxd5 exd5
1966 US Open – Round 9 – Ozols, Juris – 1/2-1/2 – Zalys, Ignas – G54 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nf3 c6 6. Qd3 Ne4 7. Nfd2 f5 8. f3 dxc4 9. Nxc4 Nef6 10. O-O Be7
1967 Harrachov – Round 1 – Zara, Dan – 1/2-1/2 – Perez Trujillo, Octavio – G35 1. d4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 c5 5. c4 Nc6 6. cxd5 Nxd5 7. O-O Be7 8. Nc3 Nxc3 9. bxc3 O-O 10. e4 b6
1968 Prague U26 – Round 3 – Zajic, Jiri – 1-0 – Zedek, Alois – G10 1. c4 Nf6 2. d4 e6 3. Nf3 d5 4. g3 Nbd7 5. Bg2 c6 6. Qc2 Bd6 7. Nbd2 O-O 8. O-O e5 9. cxd5 Nxd5 10. Nc4 Qc7
1969 It Bad Pyrmont GER – Round 9 – Narbel, Jean Claude – 0-1 – Tompa, Janos – G15 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nd2 d5 5. Bg2 O-O 6. Nf3 Nbd7 7. O-O b6 8. Qb3 a5 9. cxd5 exd5 10. Ne5 Bb7
1969 Rhyl ch-BCF – Round 1 – Lees, David – 0-1 – Hempson, Peter W – G2 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 c6 5. Bg2 Nbd7 6. b3 Ne4 7. O-O f5 8. Nfd2 Nxd2 9. Nxd2 Bd6 10. Bb2 O-O
1969 Schwerin – Round 1 – Espig, Lutz – 1/2-1/2 – Bindrich, Oswald – G33 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 c5 5. Bg2 Nc6 6. O-O cxd4 7. Nxd4 Bc5 8. Nb3 Bb6 9. Na3 O-O 10. Bg5 h6
1970 Vinkovci – Round 6 – Szabo, Laszlo – 1-0 – Ozanic, Marijan – G125 1. Nf3 Nf6 2. d4 d5 3. c4 e6 4. g3 c5 5. Bg2 Nc6 6. O-O cxd4 7. Nxd4 Bc5 8. Nb3 Be7 9. cxd5 exd5 10. Nc3 Be6
FIDE Grand Swiss 2025 – Round 2 – Aditya Mittal – 1/2-1/2 – Kollars Dmitrij – G104 1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. d4 b6 8. h4 Bb7 9. Bg5 Qf5 10. Bd3 Qa5
FIDE Grand Swiss 2025 – Round 4 – Firouzja Alireza – 1/2-1/2 – Gumularz Szymon – G178 1. c4 c6 2. Nf3 d5 3. d4 Nf6 4. Nc3 e6 5. e3 a6 6. Qc2 c5 7. cxd5 exd5 8. Be2 cxd4 9. exd4 Nc6 10. O-O Be6
FIDE World Cup 2025 – Round R1 Classical 2 – Svane – 1/2-1/2 – Vazquez Facundo – G111 1. d4 d5 2. c4 e6 3. Nf3 c6 4. Nc3 dxc4 5. a4 Bb4 6. Bd2 a5 7. Rb1 c5 8. dxc5 Nd7 9. e3 Nxc5 10. Bxc4 Nf6
Qatar Masters Open 2015 – Round 1.40 – Saduakassova, Dinara – 0-1 – Grandelius, Nils – G34 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 g6 5. Nc3 Bg7 6. Bg5 c6 7. e4 h6 8. Bxf6 Qxf6 9. Nf3 O-O 10. O-O dxc4

E01a —

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2

Eval: [+0.12]

Les coups candidats

4…Be7 — 38.7% (9587 parties) →

Ambassadeurs : Sosonko, Gennadi (49x), Mason, Ian J (42x), Campani, Paolo (33x), Frijling, Jeroen (28x), Armani, Giuseppe (26x), Nicolaescu, Nicolae (25x), ? (23x), Beliavsky, Alexander G (22x)

4…dxc4 — 27.4% (6780 parties) →

Ambassadeurs : Sosonko, Gennadi (32x), Mason, Ian J (29x), Haba, Petr (26x), Kireev, Vladimir Vasilyevich (25x), Korchnoi, Viktor (24x), Sokolov, Andrei (24x), Vinchev, Simeon (21x), Golombek, Harry (19x)

4…Bb4+ — 18.0% (4455 parties) →

Ambassadeurs : Tiviakov, Sergei (46x), Campani, Paolo (37x), Mason, Ian J (29x), Armani, Giuseppe (25x), Yuffa, Daniil (25x), Frijling, Jeroen (24x), Kireev, Vladimir Vasilyevich (19x), Galjé, Hans (19x)

4…c6 — 8.3% (2061 parties) →

Ambassadeurs : Besozzi, Ferdinando (12x), Haba, Petr (6x), Aannevik, Bjarne (6x), Ivanov, Mikhail M. (6x), Kaunas, Kestutis (6x), Straub, Natalia (5x), Glavina, Pablo (5x), Rigo, Janos (5x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…Be7	4…dxc4	4…Bb4+	4…c6
<1800	544	37%	15%	12%	15%
1800-2200	7305	40%	22%	16%	13%
2200-2600	11987	38%	31%	22%	4%
2600+	1055	39%	29%	30%	0%

Évolution par décennie (% des parties)

Décennie	N parties	4…Be7	4…dxc4	4…Bb4+	4…c6
1920s	4	25%	25%	25%	25%
1930s	71	27%	34%	1%	15%
1940s	188	24%	49%	3%	7%
1950s	323	24%	48%	2%	14%
1960s	162	38%	33%	6%	12%
1970s	483	46%	29%	3%	10%
1980s	1481	49%	33%	5%	6%
1990s	2966	41%	26%	9%	14%
2000s	4816	41%	29%	10%	12%
2010s	9356	38%	26%	22%	7%
2020s	4925	35%	25%	32%	4%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…Be7	38%	35%	▼ -2.9%
4…dxc4	26%	25%	▼ -1.4%
4…Bb4+	22%	32%	▲ +9.9%
4…c6	7%	4%	▼ -3.9%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 10 parties
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Karpov, Aleksandr — 10 parties
Anand, Viswanathan — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Ju, Wenjun — 10 parties
Hou, Yifan — 10 parties
Ding, Liren — 10 parties
Gukesh D — 10 parties
Euwe, Max — 9 parties
Alekhine, Alexander — 8 parties
Tal, Mikhail — 4 parties
Botvinnik, Mikhail — 2 parties

Parties historiques

4…Be7 — 38.7% (9587 parties)

1922 — Carls, Carl vs Antze, Oskar — 1/2-1/2 — Bad Oeynhausen GER
1934 — Ragozin, Viacheslav vs Rauzer, Vsevolod — 1/2-1/2 — Leningrad ch-URS
1937 — Mikenas, Vladas vs Tylor, Theodore Henry — 1-0 — Hastings ENG
1937 — Yudovich, Mikhail M vs Makogonov, Vladimir — 1/2-1/2 — Tbilisi ch-URS
1937 — Yudovich, Mikhail M vs Levenfish, Grigory — 1/2-1/2 — Tbilisi ch-URS

4…dxc4 — 27.4% (6780 parties)

1925 — Gurbaks vs Kostic, Boris — 0-1 — Kashmir
1930 — Opocensky, Karel vs Flohr, Salo — 0-1 — Prague predolymp
1932 — Brunner, Jan vs Acevedo Aybar, Maria Alejandra — 1-0 — Mexico City MEX
1937 — Flohr, Salo vs Fine, Reuben — 1/2-1/2 — Kemeri LAT
1937 — Flohr, Salo vs Fairhurst, William — 1-0 — Hastings ENG

4…Bb4+ — 18.0% (4455 parties)

1929 — Lynch, Julio vs Garnier Portela, Cristopher — 1-0 — Buenos Aires ARG
1938 — Becker, Albert vs Koch, Berthold — 0-1 — Bad Oeynhausen GER
1943 — Lokvenc, Josef vs Schwammenhoefer, Karl — 1-0 — Vienna AUT
1944 — Fine, Reuben vs Pinkus, Albert — 1/2-1/2 — New York, NY USA
1945 — Fine, Reuben vs Korda, S. — 1-0 — Washington, DC USA

4…c6 — 8.3% (2061 parties)

1928 — Regedzinski, Teodor vs Brody, Miklos — 1-0 — The Hague NED
1931 — Beutum, Sigmund vs Hoenlinger, Baldur — 0-1 — Vienna AUT
1931 — Concepcion Villegas, Bryan Uriel vs Alarcon Molina, Joshua Dylan — 1-0 — Buenos Aires ARG
1931 — Ibanez Guillen, Enrique vs Rebizzo, Cayetano — 0-1 — Buenos Aires ARG
1937 — Flohr, Salo vs Bellod Thomas, Gonzalo — 1-0 — Hastings ENG

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