A28l — English: Four Knights, Nenarokov Variation

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Bg5 h6 7.Bh4 Bxc3+ 8.bxc3 Ne5 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur les cases fortes b5 et d5 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 fous c1 et f1 et les tours a1 et h1).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; d3 (Libérer Bc1) ; Bd3 (Développer Bf1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur la case forte b4 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et f1 et le roi resté au centre.

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

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...d6 (Libérer Bc8) ; ...Be7 (Développer Bf8) ; ...Bg4 (Clouer Nf3) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● d2→e3, f2→e3	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● d5 (2v1)	● b4 (2v0)
Cases faibles	—	—
Centre	● d5 (2v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 2)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	4 (c1, f1, a1, h1)	4 (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	semi-ouvert
Ruptures	● c4-c5, ● d2-d3, ● e3-e4	● …d7-d6, ● …d7-d5, ● …e5-e4

Partie
1904 DSB-14.Kongress – Round 7 – Swiderski, Radoslaw – 1-0 – Fleischmann, Leo – G32 1. c4 e5 2. Nc3 Nf6 3. e3 Nc6 4. Nf3 a6 5. Be2 d5 6. cxd5 Nxd5 7. Qa4 Qd6 8. O-O Bd7 9. Nxd5 Qxd5 10. Bc4 Qd6
1912 Bad Pistyan – Round 14 – Rubinstein, Akiba – 1-0 – Cohn, Erich – G56 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 Bb4 8. O-O Bxc3 9. bxc3 d5 10. cxd5 Nxd5
1925 Marienbad – Round 15 – Nimzowitsch, Aron – 1/2-1/2 – Spielmann, Rudolf – G96 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 d6 6. Be2 O-O 7. O-O Re8 8. b3 exd4 9. Nxd4 Nxd4 10. Qxd4 Nd7
1925 Montevideo – Round 8 – Villegas, Benito – 1-0 – Romano, Valentin – G21 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 d6 5. d4 Bf5 6. Qb3 Qc8 7. d5 Nb8 8. Nh4 Bg6 9. Nxg6 hxg6 10. e4 Nbd7
1927 Trebitsch Memorial 11th – Round 11 – Takacs, Sandor – 1/2-1/2 – Gruber, Theodor – G22 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d3 Be7 6. Be2 O-O 7. O-O d5 8. cxd5 Nxd5 9. a3 Be6 10. Bd2 Nb6
1927 Trebitsch Memorial 11th – Round 9 – Takacs, Sandor – 1/2-1/2 – Becker, Albert – G18 1. c4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 exd4 9. cxd4 O-O 10. O-O Bg4
1928 Berlin Tageblatt – Round 1 – Nimzowitsch, Aron – 0-1 – Spielmann, Rudolf – G1 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 Bd7 9. e4 exd4 10. cxd4 Bb4+
1931 Prague ol – Round 19 – Tartakower, Savielly – 1/2-1/2 – Marshall Viele, Fabrizio Aaron – G75 1. c4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd7 8. d4 exd4 9. exd4 Be7 10. O-O O-O
1932 IFSB Bundesmeisterschaft – Round ? – Eliskases, Erich – 1/2-1/2 – Balogh, Janos – G2 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. a3 O-O 6. Qc2 d6 7. Be2 Re8 8. O-O Bf8 9. b4 Bg4 10. d3 a6
1933 Buenos Aires – Round 1 – Acevedo Villegas, Abel Alfredo – 0-1 – Rebizzo, Cayetano – G1 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 d5 7. Qa4 O-O 8. Nxc6 bxc6 9. Qxc6 Bd7 10. Qa6 dxc4
1935 Argentina – Round 2 – Grau, Roberto G – 1-0 – Piazzini, Luis – G7 1. c4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. e3 Be7 5. a3 d5 6. cxd5 Nxd5 7. Qc2 Be6 8. Bb5 O-O 9. Bxc6 bxc6 10. Nxe5 Bd6
1936 Moskou – Round 1 – Eliskases, Erich – 0-1 – Levenfish, Grigory – G1 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. d3 O-O 6. Be2 d6 7. a3 Bf5 8. O-O Re8 9. e4 Bg4 10. Be3 Bf8
1937 Brno – Round 10 – Ehrlich, L. – 1-0 – Steiner, Lajos – G19 1. c4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. e3 Be7 5. d4 exd4 6. Nxd4 d6 7. Be2 O-O 8. O-O Ne5 9. f4 Ned7 10. Bf3 a5
1937 Kemeri – Round 1 – Flohr, Salo – 1-0 – Landau, Salo – G14 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Qc2 Be7 7. a3 Nxc3 8. dxc3 O-O 9. b4 Bd6 10. Nd2 Bg4
1937 Kemeri – Round 1 – Flohr, Salo – 1-0 – Landau, Salo – G15 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Qc2 Be7 7. a3 Nxc3 8. bxc3 O-O 9. d4 Bd6 10. Be2 Qe7
1937 Semmering/Baden – Round 3 – Flohr, Salo – 1-0 – Petrov, Vladimir (ENG) – G9 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd7 8. d4 Bd6 9. Bxc6 Bxc6 10. dxe5 Bxf3
1937 Stockholm ol (Men) – Round 17 – Szabo, Laszlo – 1-0 – Montgomerie, John – G38 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 f6 7. O-O Be6 8. d4 Nxc3 9. bxc3 e4 10. Nd2 f5
1938 Argentina – Round 1 – Villegas, Benito – 1-0 – Camara Bordon, Luis Marcos – G1 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. Be2 O-O 6. d4 exd4 7. Nxd4 d5 8. cxd5 Nxd5 9. Nxd5 Qxd5 10. Bf3 Qd6
1938 Trade Unions – Round 20 – Sokolsky, Alexey – 1/2-1/2 – Mazel, Isaak Y – G155 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d4 Bg4 6. Be2 g6 7. b3 Bg7 8. Bb2 O-O 9. O-O exd4 10. Nxd4 Ne5
1938 URS Ch, semi final – Round 1 – Sokolsky, Alexey – 1-0 – Ilyin Zhenevsky, Alexander – G2 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 d6 8. O-O Bd7 9. b3 Re8 10. Bb2 Bf8
1939 Leningrad ch-URS – Round 12 – Dubinin, Peter – 1-0 – Pogrebissky, Iosif – G94 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 Re8 8. O-O Bf8 9. b3 Ne5 10. Bb2 d6
1940 Moskou ch-URS – Round 1 – Stolberg, Mark Moiseevich – 0-1 – Keres, Paul – G3 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 d5 8. Nxc6 bxc6 9. O-O Bd6 10. Qa4 Bd7
1942 Munich – Round 5 – Foltys, Jan – 1-0 – Rabar, Braslav – G35 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 Nxd4 8. Qxd4 d6 9. b3 c6 10. O-O d5
1944 Beverwijk NED – Round ? – Kramer, Haije – 1-0 – Vlagsma, Chris – G2 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 e4 9. d5 exf3 10. dxc6 b6
1944 Mar del Plata – Round 10 – Concepcion Villegas, Bryan Uriel – 1/2-1/2 – Liebstein, Arturo – G78 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd7 8. d4 e4 9. Nd2 Qg5 10. Bf1 f5
1944 URS Ch sf Moscow RUS – Round 5 – Yudovich, Mikhail M – 0-1 – Alatortsev, Vladimir N. – G5 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 d6 5. d4 Be7 6. Be2 O-O 7. O-O Re8 8. b3 Bg4 9. Bb2 Bf8 10. h3 Bh5
1945 Mar del Plata – Round 3 – Iliesco, Juan – 0-1 – Hounie Fleurquin, Carlos – G9 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 e4 9. Nd2 Qg5 10. Bf1 Qg6
1945 Moscow Ch – Round 7 – Aramanovich, I – 0-1 – Flohr, Salo – G34 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 exd4 9. cxd4 O-O 10. O-O Ne7
1946 Stockholm SWE – Round ? – Book, Eero – 1/2-1/2 – Hult, Gunnar – G1 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. Qc2 Qe7 9. d4 O-O 10. O-O Bd7
1946 USA Ch New York, NY USA – Round 1 – Sandrin Chodorge, Antoine – 1-0 – Ulvestad, Olaf – G4 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 Bb4 8. O-O Bxc3 9. bxc3 Ne7 10. Qc2 d5
1948 Bad Gastein – Round 10 – Lundin, Erik – 1/2-1/2 – Palme, Rudolf – G72 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. d3 Be7 7. Be2 O-O 8. a3 Be6 9. Qc2 Nb6 10. b4 a6
1948 Bad Gastein – Round 4 – Lundin, Erik – 1/2-1/2 – Toth, Sz – G24 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d4 Be7 6. Be2 O-O 7. h3 Re8 8. d5 Nb8 9. e4 Nbd7 10. Be3 a5
1948 South Fallsburg ch-USA – Round 1 – Sandrin Chodorge, Antoine – 1-0 – Ulvestad, Olaf – G4 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d6 5. d4 Bg4 6. Be2 Be7 7. h3 Bd7 8. b3 O-O 9. Bb2 Re8 10. Qd2 e4
1949 Venice – Round 1 – Tartakower, Savielly – 1/2-1/2 – Fletzer – G1 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. d4 exd4 6. Nxd4 Be7 7. cxd5 Nxd5 8. Nxc6 bxc6 9. Be2 Nxc3 10. Qxd8+ Bxd8
1950 Moskou ch-URS – Round 1 – Mikenas, Vladas – 0-1 – Keres, Paul – G4 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 d5 8. cxd5 Nb4 9. O-O Nbxd5 10. Nxd5 Qxd5
1950 Moskou ch-URS – Round 1 – Smyslov, Vladimir – 1-0 – Mikenas, Vladas – G3 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 Ne5 8. Nc2 c6 9. e4 d6 10. O-O Re8
1951 Vancouver – Round 1 – Vaitonis, Povilas – 1-0 – Yerhoff, Frank – G1 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. a3 a6 7. Qc2 Nxc3 8. bxc3 Bd6 9. d4 O-O 10. Bc4 Qe7
1952 URS ch sf – Round 4 – Ilivitsky, Georgy A – 1/2-1/2 – Bannik, Anatolij – G22 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. d4 d6 6. Be2 O-O 7. O-O Bg4 8. d5 Nb8 9. e4 Bc8 10. Ne1 Nbd7
1952 URS ch sf – Round 8 – Nei, Iivo – 1/2-1/2 – Mikenas, Vladas – G47 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. Be2 O-O 6. O-O d5 7. cxd5 Nxd5 8. d3 Be6 9. a3 Qd7 10. Qc2 f6
1952 URS ch sf – Round 9 – Ilivitsky, Georgy A – 1/2-1/2 – Chekhover, Vitaly – G53 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 exd4 9. cxd4 O-O 10. O-O Bg4
1954 Amsterdam olm – Round 1 – Vaitonis, Povilas – 1-0 – Maher, Vincent – G6 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Qc2 Be6 7. a3 a5 8. Bb5 f6 9. d4 Nxc3 10. bxc3 Bd7
1954 CSR Ch – Round 17 – Dolezal, Jiri – 1-0 – Pithart, Frantisek – G139 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd7 8. e4 Bc5 9. O-O O-O 10. Bb2 Qe8
1954 Olympiad final A – Round 1 – Barcza, Gedeon – 0-1 – Pfeiffer, Gerhard – G4 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d6 5. Be2 g6 6. O-O Bg7 7. d4 O-O 8. dxe5 dxe5 9. b3 Bg4 10. Ba3 Re8
1955 CAN Ch – Round 10 – Fuster, Geza – 1-0 – Joyner, Lionel – G42 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. d3 Be7 7. Be2 Be6 8. O-O Nb6 9. a3 f5 10. Qc2 O-O
1955 Moskou ch-URS – Round 1 – Mikenas, Vladas – 1/2-1/2 – Antoshin, Vladimir S – G20 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 d5 8. Nxc6 bxc6 9. O-O Bf5 10. b3 Qd6
1955 Moskou ch-URS – Round 1 – Simagin, Vladimir – 0-1 – Antoshin, Vladimir S – G8 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 Bd7 9. O-O O-O 10. Bb2 Nxd4
1955 Prague tm – Round 4 – Sajtar, Jaroslav – 1/2-1/2 – Arlamowski, Edward – G19 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 d6 6. Be2 O-O 7. O-O Bg4 8. d5 Nb8 9. e4 Nbd7 10. Ne1 Bxe2
1955 URS Team Ch sf – Round ? – Sokolsky, Alexey – 1-0 – Antoshin, Vladimir S – G5 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 g6 5. d4 d6 6. b3 Bg7 7. Bb2 O-O 8. Be2 e4 9. Nd2 Re8 10. a3 Bf5
1955 Zittau-A 5th – Round 5 – Eising, Johannes – 1-0 – Juettler Helmut – G16 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. Be2 O-O 6. O-O d5 7. cxd5 Nxd5 8. Qc2 Bf6 9. d3 Be6 10. Bd2 Ndb4
1956 Montevideo – Round 1 – Ader Hausman, Walter – 1/2-1/2 – Isain, Pedros Santos – G1 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 d5 5. d4 exd4 6. exd4 Bb4 7. Be2 Bf5 8. O-O O-O 9. c5 Bxc3 10. bxc3 Re8
1956 New York Rosenwald – Round ? – Reshevsky, Samuel – 1-0 – Mednis, Edmar J – G3 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Qc2 Nb6 7. Bb5 Bd6 8. d4 Bd7 9. dxe5 Nxe5 10. Nxe5 Bxe5
1957 HUN Ch Budapest HUN – Round 1 – Barcza, Gedeon – 1-0 – Bely, Miklos – G1 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. Be2 O-O 6. O-O d5 7. cxd5 Nxd5 8. d3 Be6 9. a3 f5 10. Qc2 Bf6
1957 Mar del Plata – Round 3 – Kotov Lundqvist, Alex – 1-0 – Albert Seguer, Eladio – G33 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 d6 6. d5 Nb8 7. e4 O-O 8. h3 c6 9. Be3 cxd5 10. cxd5 Nbd7
1959 CSR Ch – Round 13 – Pachman, Ludek – 1-0 – Ivanco, Imrich – G99 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d4 Bg4 6. d5 Nb8 7. e4 Be7 8. h3 Bd7 9. Be3 c5 10. dxc6 Bxc6
1960 Poland Ch – Round 6 – Doda, Zbigniew – 1-0 – Witkowski, Stanislaw – G23 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d4 Bf5 6. d5 Nb8 7. h3 h5 8. Bd3 Bxd3 9. Qxd3 Nbd7 10. Qc2 Be7
1960 Varna Varna BUL – Round 3 – Bobotsov, Milko G – 1/2-1/2 – Fuchs, Reinhart – G10 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 d5 8. cxd5 Nb4 9. O-O Nbxd5 10. Nxd5 Qxd5
1961 FRG Ch – Round 12 – Eising, Johannes – 1/2-1/2 – Kestler, Hans-Guenther – G12 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d6 5. Be2 Be7 6. O-O O-O 7. d4 Bg4 8. d5 Nb8 9. Ne1 Bxe2 10. Qxe2 Nbd7
1961 Maroczy Memorial – Round 1 – Taimanov, Mark E – 1/2-1/2 – Uhlmann, Wolfgang – G7 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d4 g6 6. Be2 Bg7 7. dxe5 Nxe5 8. O-O O-O 9. Nd4 d5 10. cxd5 Nxd5
1961 Warsaw – Round 1 – Brzozka, Stefan – 0-1 – Mititelu, Gheorghe – G8 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d4 Be7 6. Be2 O-O 7. O-O Re8 8. a3 a5 9. d5 Nb8 10. e4 Nbd7
1961 Zevenaar – Round 2 – Bobotsov, Milko G – 1/2-1/2 – Wade, Robert G – G24 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Nc2 Nb4 8. Bd2 c6 9. Nxb4 Bxb4 10. Be2 Bxc3
1962 URS Team Ch – Round 1 – Kotov, Alexander. – 1/2-1/2 – Petrosian, Tigran V – G5 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d6 5. d4 Bd7 6. Be2 g6 7. O-O Bg7 8. d5 Ne7 9. e4 O-O 10. Ne1 Ne8
1962 Varna olm – Round 8 – Doda, Zbigniew – 1-0 – Thorsteinsson, Bjorn – G331 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Nc2 Re8 8. Be2 Nb4 9. O-O c6 10. Bf3 d5
1963 Piatigorsky Cup 1st – Round 8 – Petrosian, Tigran V – 1/2-1/2 – Keres, Paul Petrovich – G10 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. a3 d6 6. Qc2 O-O 7. Be2 Re8 8. O-O Bg4 9. d3 Bf8 10. b3 d5
1965 HUN-ch21 – Round ? – Koberl, Ferenc – 1/2-1/2 – Kovacs, Laszlo M – G74 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd7 8. Qc2 Bd6 9. O-O a6 10. Be2 O-O
1968 Reykjavik – Round 1 – Szabo, Ladislav – 1-0 – Fjeldsted, Andres – G4 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. e4 O-O 9. O-O Bg4 10. h3 Bh5
1970 Belgrade URS-World – Round 2.4 – Polugaevsky, Lev – 1/2-1/2 – Hort, Vlastimil – G2 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 d6 5. d4 Bg4 6. d5 Nb8 7. e4 Be7 8. h3 Bh5 9. Be3 a5 10. Bd3 Na6
1970 Palma de Mallorca Interzonal – Round 8 – Panno, Oscar – 1-0 – Huebner, Robert – G13 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 g6 5. d4 d6 6. b3 Bg4 7. Be2 Bg7 8. Bb2 O-O 9. d5 Ne7 10. e4 Nh5
41. Olympiad Open 2014 – Round 1.3 – Agdestein, Simen – 1-0 – Al Qudaimi, Basheer – G47 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 e4 8. Ne5 Bd7 9. Nxd7 Qxd7 10. f3 a6
41. Olympiad Open 2014 – Round 2.15 – Gajewski, Grzegorz – 1/2-1/2 – Wang, Puchen – G105 1. c4 e5 2. Nc3 Nc6 3. e3 Nf6 4. Nf3 Be7 5. Qb3 O-O 6. Be2 Re8 7. O-O Bb4 8. Nd5 Bc5 9. d3 d6 10. Bd2 Nxd5
7. Norway Armageddon 2019 – Round 1.4 – Vachier-Lagrave, Maxime – 0-1 – Yu, Yangyi – G4 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 g6 5. d4 d6 6. Be2 Bg7 7. O-O O-O 8. b3 Bf5 9. Bb2 exd4 10. exd4 Ne4
7. Norway Chess 2019 – Round 1.2 – Mamedyarov, Shakhriyar – 1/2-1/2 – Caruana, Fabiano – G2 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 Bd7 9. O-O O-O 10. Nd2 Na5
7. Norway Chess 2019 – Round 5.5 – Mamedyarov, Shakhriyar – 1/2-1/2 – Grischuk, Alexander – G24 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 Bd7 9. O-O O-O 10. Nd2 Qh4
Biel Interzonal 1993 – Round 4 – Agdestein, Simen – 1/2-1/2 – Xu, Jun(SD) – G81 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. a3 O-O 6. b4 d5 7. b5 e4 8. cxd5 Na5 9. Ng5 Bf5 10. Qa4 b6
Buenos Aires olm 1978 – Round 1 – Adamski, Jan – 1/2-1/2 – Romanishin, Oleg M – G3 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d6 5. d4 Bf5 6. d5 Nb8 7. Nd2 Nbd7 8. e4 Bg6 9. h4 h5 10. g3 Ng4
Buenos Aires olm 1978 – Round 1 – Ribli, Zoltan – 1/2-1/2 – Petrosian, Tigran V. – G4 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d6 5. d4 g6 6. b3 Bg4 7. Be2 Bg7 8. h3 Bf5 9. dxe5 Ne4 10. Bb2 O-O
Bugojno 1984 – Round 1 – Smyslov, Vassily – 1/2-1/2 – Miles, Anthony J – G5 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. a3 d5 6. cxd5 Nxd5 7. Qc2 O-O 8. Bb5 Nxc3 9. bxc3 Qd5 10. c4 Qe6 1/2-1/2
Bugojno 1984 – Round 1 – Timman, Jan H – 1/2-1/2 – Miles, Anthony J – G6 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Nde2 Re8 8. Nf4 Ne5 9. Be2 c6 10. O-O a6
Corus 2001 – Round 12 – Piket, Jeroen – 1/2-1/2 – Ivanchuk, Vasyl – G75 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. a3 d5 6. cxd5 Nxd5 7. Qc2 O-O 8. Nxd5 Qxd5 9. Bc4 Qd6 10. b4 Bf6
Cote d'Ivoire Blitz 2019 – Round 17.1 – So, Wesley – 0-1 – Nakamura, Hikaru – G80 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d4 Bg4 6. Be2 Be7 7. h3 Bh5 8. O-O O-O 9. b3 Re8 10. Bb2 Bf8
FIDE GP 2002 – Round 2.1 – Azmaiparashvili, Zurab – 0-1 – Anand, Viswanathan – G34 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Be2 Bb4 8. O-O Bxc3 9. bxc3 Re8 10. f3 Ne5
FIDE World Blitz Championship 2014 – Round 19.24 – Vitiugov, Nikita – 1-0 – Movsesian, Sergei – G185 1. c4 e5 2. e3 Nf6 3. Nc3 Nc6 4. Nf3 g6 5. d4 d6 6. g3 Bg7 7. Bg2 O-O 8. O-O Bf5 9. h3 Qc8 10. Kh2 Re8
FIDE World Rapid Championship 2025 – Round 1 – Dudin Gleb – 0-1 – Rapport Richard – G14 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d4 Bd7 6. Be2 g6 7. O-O Bg7 8. b4 O-O 9. b5 Na5 10. Ba3 Re8
FIDE World Rapid Championship 2025 – Round 11 – Dudin Gleb – 0-1 – Nihal Sarin – G215 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 g6 5. d4 exd4 6. exd4 Bg7 7. d5 Ne7 8. Be2 O-O 9. O-O d6 10. h3 Re8
GCT Blitz Paris 2017 – Round 7.4 – Caruana, Fabiano – 1/2-1/2 – Bacrot, Etienne – G34 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d6 5. d4 g6 6. Bd3 Bg7 7. O-O O-O 8. h3 Re8 9. Bc2 exd4 10. exd4 d5
IBM 1978 – Round 12 – Timman, Jan H – 1-0 – Romanishin, Oleg M – G33 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Qe7 5. d4 exd4 6. Nxd4 g6 7. Ndb5 d6 8. Nd5 Nxd5 9. cxd5 Ne5 10. f4 Ng4
IBM 1978 – Round 3 – Miles, Anthony J – 1/2-1/2 – Romanishin, Oleg M – G8 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d6 5. d4 Bf5 6. Be2 Be7 7. d5 Nb8 8. Nd2 Nbd7 9. e4 Bg6 10. Bf3 Nc5
Koop Tjuchem 1996 – Round 8 – Van Wely, Loek – 1-0 – Sokolov , Ivan – G30 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. a3 O-O 6. Qc2 Re8 7. b4 Bf8 8. Bb2 d6 9. Bd3 g6 10. Rc1 a5
Lindores Abbey Tal Memorial 2021 – Round 13.27 – Niemann, Hans Moke – 1-0 – Ponkratov, Pavel – G567 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 g6 5. d4 exd4 6. exd4 Bg7 7. d5 Ne7 8. Be2 O-O 9. O-O d6 10. h3 Re8
Malta ol (Men) 1980 – Round 1 – Hoelzl, Franz – 0-1 – Tal, Mikhail – G5 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. a3 O-O 6. b4 d6 7. Be2 Re8 8. d3 Bf8 9. Bb2 g6 10. O-O Bg7
Montreal 1979 – Round 11 – Timman, Jan H – 0-1 – Karpov, Anatoly – G45 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Be7 5. d4 exd4 6. Nxd4 O-O 7. Nxc6 bxc6 8. Be2 d5 9. O-O Bd6 10. b3 Qe7
Moscow Superblitz 2006 – Round 19 – Savchenko, Boris – 0-1 – Kobalia, Mikhail – G56 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 g6 5. d4 exd4 6. exd4 Bg7 7. d5 Ne7 8. h3 d6 9. Be2 O-O 10. O-O a6
Munich Intel Express blitz '5 1994 – Round 1 – Huebner, Robert – 1-0 – Anand, Viswanathan – G2 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 g6 5. d4 d6 6. dxe5 Nxe5 7. Nxe5 dxe5 8. Qxd8+ Kxd8 9. b3 Be6 10. Bb2 c6
Tal Memorial Blitz 2014 – Round 11.1 – Tomashevsky, Evgeny – 1-0 – Kosteniuk, Alexandra – G61 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 e4 9. Nd2 Qg5 10. Bf1 Qg6
Tata Steel India Rapid 2018 – Round 5.1 – Nakamura, Hikaru – 1-0 – Ganguly, Surya Shekhar – G21 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 Qf6 9. O-O O-O 10. Bd3 Bf5
URS Spartakiad 1979 – Round 1 – Nei, Iivo – 0-1 – Tal, Mikhail – G2 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. Be2 O-O 6. O-O d5 7. cxd5 Nxd5 8. d3 Be6 9. Qc2 f5 10. a3 a5
World Blitz 2017 – Round 11.21 – Howell, David W L – 0-1 – Savchenko, Boris – G563 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 h6 5. a3 e4 6. Nd4 Bc5 7. Nb3 b6 8. Qc2 Qe7 9. Nd5 Nxd5 10. cxd5 Nd8
World Blitz 2017 – Round 2.43 – Laznicka, Viktor – 0-1 – Malakhatko, Vadim – G98 1. c4 e5 2. Nc3 Nc6 3. e3 Nf6 4. Nf3 g6 5. a3 Bg7 6. Be2 O-O 7. d3 d6 8. O-O h6 9. Qc2 Re8 10. b4 e4
World Blitz 2017 – Round 7.47 – Ganguly, Surya Shekhar – 1-0 – Ponomariov, Ruslan – G379 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. Qb3 O-O 6. Be2 d6 7. d3 Rb8 8. O-O Bg4 9. h3 Bh5 10. a3 Re8
World Blitz 2018 – Round 15.21 – Inarkiev, Ernesto – 1-0 – Najer, Evgeniy – G881 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 Bd7 9. O-O O-O 10. Rb1 Re8
World Blitz 2018 – Round 6.29 – Inarkiev, Ernesto – 1-0 – Khanin, Semen – G352 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 g6 5. d4 d6 6. b3 Bg7 7. dxe5 Nxe5 8. Nxe5 dxe5 9. Qxd8+ Kxd8 10. Ba3 a6
World Blitz 2019 – Round 19.55 – Petrosyan, Manuel – 0-1 – Iljiushenok, Ilia – G1302 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Be7 5. Qc2 O-O 6. a3 a5 7. Nd5 d6 8. Ng5 g6 9. h4 Bf5 10. Bd3 Bxd3
World Rapid 2019 – Round 2.69 – Rakhmanov, Aleksandr – 1-0 – Faizrakhmanov, Ramil – G138 1. c4 Nf6 2. Nc3 e5 3. e3 Nc6 4. Nf3 g6 5. d4 d6 6. dxe5 Nxe5 7. Be2 Bg7 8. O-O O-O 9. Nd4 Re8 10. b3 c6
Yerevan ol (Men) 1996 – Round 1 – Sitanggang, Salor – 0-1 – Adams, Michael – G1 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Be7 5. Be2 O-O 6. O-O d5 7. d4 exd4 8. Nxd4 Ne5 9. cxd5 Nxd5 10. Nxd5 Qxd5

A28l — Four Knights Nenarokov Variation

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Bg5 h6 7.Bh4 Bxc3+ 8.bxc3 Ne5

Eval: [+0.11]

Les coups candidats

9.Bb4 — 66.4% (6279 parties) →

Ambassadeurs : Lanzani, Paolo (35x), Ellis, James R (32x), Jørgensen, Brian Jørgen (29x), Banas, Jan (27x), Lunek, Ferry A (27x), Suba, Mihai (26x), Hassim, Unes (25x), Tsenkov, Ljubomir (24x)

9.Be7 — 12.9% (1225 parties)

Ambassadeurs : Banas, Jan (13x), Titz, Heimo (9x), Suba, Mihai (8x), Prandstetter, Eduard (6x), Linqvist, Grels (6x), Nei, Iivo (5x), Miles, Anthony J (5x), Lerner, Konstantin Z (5x)

9.d5 — 10.8% (1019 parties)

Ambassadeurs : Linqvist, Grels (7x), Hansen, Torbjorn Ringdal (5x), Suba, Mihai (5x), Flohr, Salo (4x), Amin, Ashraf (4x), Vazelakis, Dimitrios (4x), Vaitonis, Povilas (3x), Rubinetti, Jorge (3x)

9.d6 — 6.0% (564 parties)

Ambassadeurs : Banas, Jan (7x), Suba, Mihai (5x), Hohler, Peter (4x), Stepanyan, Henrik (4x), Abel, Peter (4x), Adamski, Jan (3x), Hort, Vlastimil (3x), Filguth, Rubens Alberto (3x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.Bb4	9.Be7	9.d5	9.d6
<1800	198	63%	8%	15%	8%
1800-2200	2506	62%	11%	16%	7%
2200-2600	4718	71%	14%	7%	4%
2600+	352	78%	10%	4%	2%

Évolution par décennie (% des parties)

Décennie	N parties	9.Bb4	9.Be7	9.d5	9.d6
1850s	1	—	—	100%	—
1870s	4	—	75%	25%	—
1880s	2	100%	—	—	—
1900s	4	25%	25%	—	—
1910s	1	—	100%	—	—
1920s	7	14%	14%	43%	29%
1930s	35	31%	31%	23%	14%
1940s	27	19%	19%	44%	15%
1950s	42	24%	31%	31%	7%
1960s	65	58%	17%	8%	15%
1970s	414	65%	12%	6%	13%
1980s	736	59%	22%	9%	8%
1990s	1240	56%	18%	12%	9%
2000s	1715	61%	15%	13%	7%
2010s	3646	71%	10%	10%	4%
2020s	1522	77%	8%	9%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.Bb4	71%	77%	▲ +5.9%
9.Be7	10%	8%	▼ -1.9%
9.d5	10%	9%	▼ -0.7%
9.d6	4%	2%	▼ -2.1%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 10 parties
Ding, Liren — 9 parties
Karpov, Anatoly — 7 parties
Tal, Mikhail — 5 parties
Kasparov, Garry — 5 parties
Karpov, Aleksandr — 5 parties
Carlsen, Magnus — 5 parties
Anand, Viswanathan — 4 parties
Steinitz, Wilhelm — 1 partie
Euwe, Max — 1 partie
Botvinnik, Mikhail — 1 partie
Hou, Yifan — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

9.Bb4 — 66.4% (6279 parties)

1880 — Zukertort, Johannes vs Rosenthal, Samuel — 1-0 — London ENG
1883 — McKenzie, George vs Rosenthal, Samuel — 1/2-1/2 — London ENG
1906 — Swiderski, Radoslaw vs Marshall Viele, Fabrizio Aaron — 1/2-1/2 — Nuerenberg GER
1925 — Nimzowitsch, Aron vs Reti, Richard — 0-1 — DSB-24.Kongress
1930 — Acevedo Villegas, Abel Alfredo vs Masi Elizalde — 1-0 — Buenos Aires ARG

9.Be7 — 12.9% (1225 parties)

1873 — Steinitz, Wilhelm vs Adolf, Feraydo — 1-0 — Vienna AUT
1873 — Paulsen, Louis vs Adolf, Feraydo — 1/2-1/2 — Vienna AUT
1877 — Paulsen, Louis vs Englisch, Berthold — 1-0 — Leipzig GER
1906 — Swiderski, Rudolf vs Bernstein, Ossip — 1-0 — Ostend
1912 — Rubinstein, Akiba vs Cohn, Erich — 1-0 — Bad Pistyan CZE

9.d5 — 10.8% (1019 parties)

1853 — Sutton, John Dr vs Philipp, W. — 1-0 — cr meestertm
1875 — Owen, John vs Burn, Amos — 0-1 — Liverpool
1927 — Takacs, Sandor vs Becker, Albert — 1/2-1/2 — Vienna AUT
1928 — Nimzowitsch, Aron vs Spielmann, Rudolf — 0-1 — Berlin GER
1928 — Nimzowitsch, Aron vs Spielmann, Rudolf — 0-1 — Berlin GER

9.d6 — 6.0% (564 parties)

1925 — Villegas, Benito vs Romano, Valentin — 1-0 — Montevideo URU
1927 — Takacs, Sandor vs Gruber, Theodor — 1/2-1/2 — Vienna AUT
1932 — Kunert, Franz vs Batik, Frantisek — 1-0 — ?
1936 — Keres, Paul vs Mendes, Igor Renan Regalo — 1-0 — It Munich GER
1937 — Flohr, Salo vs Schmidt, Pascal — 0-1 — Parnu EST

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