E44b — Nimzo-Indian: Nimzowitsch, 5.Ne2 Bb7

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Bb7 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. a3 (Préparer expansion aile dame — 98 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Be7 (Fou actif (mobilité 5) — 57 % des parties) ; ...Bxc3+ (Fou actif (mobilité 6) — 31 % des parties) ; ...Bd6 (Fou actif (mobilité 9) — 10 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→e3, e3→d4	● a7→b6, c7→b6, d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● b5 (2v0)	● e4 (2v1)
Cases faibles	—	—
Centre	● d4 (3v0), ● e5 (1v0)	● d5 (3v2), ● e4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bf1	● Bf1 Non développé (mob. 0)
Bb4		● Bb4 Actif (mob. 7)
Bb7		● Bb7 Actif (mob. 7)
Paire de fous	● Oui	● Oui
Clouages	● knight c3	—
Non développées	4 (● c1, ● f1, ● a1, ● h1)	3 (● b8, ● 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	mobile
Ruptures	● c4-c5, ● d4-d5	● …c7-c5, ● …d7-d5, ● …e6-e5

Partie
1925 Moscow – Round 11 – Rubinstein, Akiba – 0-1 – Rabinovich, Ilya Mar – G154 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. g3 d6 9. Bg2 Nbd7 10. O-O e5
1930 Hamburg GER – Round 4 – Landau Salomon – 1-0 – Rejfir, Josef – G6 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 d6 8. g3 exd5 9. cxd5 c5 10. dxc6 Bxc6
1930 Hamburg olm – Round 1 – Landau, Salo – 1-0 – Andersen, Erik – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 Qe7 8. b4 d6 9. Bb2 O-O 10. Qc2 Nbd7
1931 Trebitsch Memorial 14th – Round 9 – Becker, Albert – 1-0 – Metanomski, Leonhard – G16 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. Qc2 d5 9. cxd5 exd5 10. Bd2 Nbd7
1932 Berlin Ch – Round 10 – Rellstab, Ludwig – 1-0 – Rotenstein Simon – G29 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. Bd3 d5 9. O-O Nbd7 10. b3 Re8
1933 Moravska Ostrava – Round ? – Steiner, Lajos – 1/2-1/2 – Pitschak, Rudolf – G25 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d6 8. f3 Qe7 9. e4 O-O 10. Bd3 c5
1936 BCF Ch 29. Major Open A – Round 9 – Landau, Salo – 1/2-1/2 – Bruce, Ronald MacKay – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 e5 8. g3 d6 9. Bg2 O-O 10. O-O Nbd7
1936 Moscow – Round 1 – Eliskases, Erich – 1/2-1/2 – Kan, Ilya A – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Nf4 O-O 8. Be2 Ne4 9. Nxe4 Bxe4 10. O-O d6
1936 Nottingham – Round 1 – Thomas, George Alan – 1/2-1/2 – Alexander, Conol Hugh – G25 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. f3 d5 7. Qb3 Bd6 8. c5 Be7 9. Nf4 O-O 10. Bd2 Bc6
1936 UJCS-14.Kongress – Round 12 – Kubanek, Jindrich – 1/2-1/2 – Gilg, Karl – G32 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Ng3 h5 8. f3 d5 9. cxd5 Nxd5 10. Bc4 c5
1937 Kemeri – Round 1 – Petrov, Vladimir S. – 1/2-1/2 – Tartakower, Savielly – G46 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Nf4 O-O 8. Be2 Re8 9. Bf3 Bxf3 10. Qxf3 Nc6
1937 Ostende – Round 9 – Landau, Salo – 0-1 – List, Paul – G42 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 b5 8. dxe6 fxe6 9. Nxb5 O-O 10. Ng3 a6
1938 Bad Elster – Round 7 – Eliskases, Erich – 0-1 – Gilg, Karl – G28 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. g3 b5 9. e4 bxc4 10. Qd4 exd5
1938 Noordwijk – Round 8 – Landau, Salo – 1-0 – Spielmann, Rudolf – G36 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. b3 O-O 9. Bb2 Re8 10. Qc2 Nbd7
1939 Birmingham International 2nd – Round 2 – Prins, Lodewijk – 1-0 – Reynolds, Arthur – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 a5 8. Ng3 Na6 9. Bd3 Nc5 10. Bc2 O-O
1939 Leningrad/Moscow – Round 17 – Reshevsky, Samuel – 1/2-1/2 – Kan, Ilya A – G14 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. g3 b5 9. cxb5 Nxd5 10. e4 Nxc3
1940 New York ch-USA – Round 1 – Reshevsky, Samuel – 1/2-1/2 – Seidman, Herbert – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. f3 d5 9. Be2 c5 10. O-O cxd4
1940 New York ch-USA – Round 11 – Kashdan, Isaac – 1-0 – Hanauer, Milton Loeb – G60 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Ng3 h5 8. d5 h4 9. Nge2 e5 10. e4 d6
1943 Salzburg – Round 1 – Bogoljubow, Efim – 0-1 – Keres, Paul – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. f3 d5 8. cxd5 exd5 9. Ng3 O-O 10. Bd3 c5
1943 Sverdlovsk – Round 1 – Botvinnik, Mikhail – 1-0 – Ragozin, Viacheslav – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Ng3 d6 9. Be2 c6 10. e4 Na6
1944 Brno ch CZE – Round 8 – Richter, Emil – 1-0 – Opocensky, Karel – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Ng3 a6 9. e4 d6 10. f4 c6
1944 Ventnor City – Round 9 – Shainswit, George – 1-0 – Di Camillo, Attilio – G23 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Ng3 d6 9. Be2 Nbd7 10. e4 a5
1945 Moskou ch-URS – Round 1 – Lilienthal, Andor – 1-0 – Kotov Lundqvist, Alex – G44 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 a5 8. e4 e5 9. Ng3 O-O 10. Bd3 Ne8
1945 USA-URS radio-m – Round 1 – Ragozin, Viacheslav – 1-0 – Seidman, Herbert – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. Be2 O-O 9. O-O Nbd7 10. b4 dxc4
1946 Staunton Memorial – Round 13 – Euwe, Max – 1-0 – O'Kelly, Albéric de Galway – G22 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. e4 d6 9. g3 c6 10. dxe6 fxe6
1946 Staunton, Groningen NED – Round 8 – Botvinnik, Mikhail – 1-0 – O'Kelly, Albéric de Galway – G25 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Ng3 b5 9. dxe6 fxe6 10. Nxb5 c5
1946 Treybal Memorial – Round 10 – Gligorić, Svetozar – 0-1 – Stoltz, Gösta – G52 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 Ne4 8. Nxe4 Bxe4 9. Qg4 Bg6 10. Be2 Nc6
1947 FRA-CSR – Round 2 – Kottnauer, Cenek – 1/2-1/2 – Raizman, Maurice – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. d5 a5 9. Be2 Na6 10. e4 d6
1947 Hilversum zt – Round 2 – Szabo, Ladislav – 1-0 – Plater, Kazimierz – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 exd5 8. cxd5 d6 9. g3 c5 10. Bg2 O-O
1947 Mar del Plata – Round 8 – Stahlberg, Gideon – 1-0 – Marini, Luis – G68 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. e4 d6 9. g3 c6 10. dxe6 fxe6
1948 Moskou ch-URS – Round 12 – Furman, Slavomir – 1-0 – Levenfish, Grigory – G105 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. d5 exd5 9. cxd5 c6 10. Bc4 cxd5
1948 Moskou ch-URS – Round 18 – Furman, Slavomir – 1/2-1/2 – Ragozin, Viacheslav – G148 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 b5 8. dxe6 fxe6 9. Nxb5 O-O 10. Ng3 Na6
1948 Moskou ch-URS – Round 5 – Ilivitsky, Georgy A – 1-0 – Ragozin, Viacheslav – G47 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. cxd5 exd5 9. Bd3 O-O 10. O-O c5
1948 Venice – Round 1 – Monticelli D Elias, Maria Lucia – 1/2-1/2 – Lokvenc, Josef – G22 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 d6 8. g3 O-O 9. Bg2 e5 10. O-O a5
1949 Moscow Ch – Round 1 – Lilienthal, Andor – 1-0 – Estrin, Yakov – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 d6 8. e4 c6 9. Nf4 Qc8 10. dxe6 fxe6
1949 US Open Omaha – Round 9 – Sandrin, Albert – 1-0 – Kramer, George – G15 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Nf4 d6 8. Bd3 Nbd7 9. O-O O-O 10. b3 e5
1949 US Open Omaha – Round 9 – Sandrin, Albert – 1-0 – Kramer, George – G16 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Nf4 d6 8. Bd3 O-O 9. O-O e5 10. Nfe2 d5
1950 CSR-BUL Prague CZE – Round 4 – Kottnauer, Cenek – 1-0 – Dimitrov Garcia, Dimitri Ivaylov – G22 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d6 8. d5 Nbd7 9. Be2 O-O 10. O-O Qe7
1950 FRG Ch Bad Pyrmont GER – Round 7 – Siegel, Paul – 0-1 – Troeger, Paul – G19 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. f3 d5 7. cxd5 exd5 8. Ng3 O-O 9. Bd3 Re8 10. O-O Nc6
1951 Buenos Aires – Round 14 – Agramunt Huguet, Joaquin – 1-0 – Luckis, Marcos – G82 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. Ng3 O-O 7. Bd3 Bxg2 8. Rg1 Bb7 9. e4 Ne8 10. Qh5 g6
1951 San Rafael – Round ? – Letelier Martner, Rene – 1/2-1/2 – Kalkstein, Rodolfo – G21 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. Bd3 d5 9. cxd5 exd5 10. O-O Re8
1951 Wertheim Memorial – Round 5 – Reshevsky, Samuel – 1-0 – Kramer, George – G29 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 e5 8. Ng3 g6 9. Bd3 d6 10. f4 Nbd7
1951 World Championship 19th – Round 13 – Botvinnik, Mikhail – 1/2-1/2 – Bronstein, David I – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. Bd3 c5 9. d5 b5 10. O-O bxc4
1952 Havana – Round 18 – Evans, Larry M – 1-0 – Jimenez Zerquera, Eleazar – G135 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. e4 d6 9. g3 Re8 10. Bg2 Bf8
1953 Zagreb – Round 17 – Gligorić, Svetozar – 1/2-1/2 – Trifunovic, Petar – G130 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. d5 c6 9. e4 exd5 10. exd5 Qe7+
1954 Amsterdam olm – Round 1 – Gligorić, Svetozar – 0-1 – Vestol, Aage – G54 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Ng3 d6 9. Be2 Nbd7 10. O-O c6
1954 Montevideo – Round 2.2 – Averbakh, Yuri L – 1-0 – Infantozzi, Julio Cesar – G41 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. Bd3 d5 9. cxd5 exd5 10. O-O c5
1955 ARG Ch – Round 19 – Shocron, Ruben – 1-0 – Reinhardt, Enrique – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Ng3 b5 9. dxe6 fxe6 10. Nxb5 a5
1955 New York Rosenwald5455 – Round 5 – Reshevsky, Samuel – 1-0 – Kramer, George – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. Bd3 d6 9. e4 e5 10. d5 Nbd7
1958 AUS Ch – Round 3.6 – Crowl, Frank Arthur – 0-1 – Bachtiar, Arovah – G19 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d6 8. Bd3 Nbd7 9. e4 e5 10. d5 Qe7
1958 Munich olm prel – Round 8 – Joyner, Lionel – 1-0 – Ennigrou, A – G175 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. Bd3 d5 9. cxd5 exd5 10. O-O Nbd7
1959 DEN Ch – Round 11 – Pedersen, Eigil – 1/2-1/2 – Korning, Peter – G55 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. f3 d5 9. cxd5 exd5 10. Bd3 Re8
1959 DEN Ch – Round 8 – Larsen, Bent Ravn – 1-0 – Korning, Peter – G37 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. Bd3 d5 9. cxd5 exd5 10. O-O Nbd7
1960 BUL-ch14 Sofia BUL – Round 2 – Kolarov, Atanas S. – 0-1 – Dimitrov, Krastjo – G4 1. c4 e6 2. d4 Nf6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Nf4 O-O 8. Be2 d5 9. Bf3 c6 10. b3 Nbd7
1961 Baku ch-URS – Round 7 – Bronstein, David I – 1/2-1/2 – Spassky, Boris Vasily – G69 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. b4 O-O 9. cxd5 Nxd5 10. Qc2 c5
1961 Debrecen – Round 12 – Boleslavsky, Isaac – 1-0 – Fazekas, Stephan – G78 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 exd5 8. cxd5 O-O 9. Nf4 a5 10. Bd3 Ba6
1962 Sweden – Round 1 – Bech Johansson, Amadeus – 1-0 – Skold, Kristian – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. Bd3 d5 9. O-O Nbd7 10. b4 c5
1962 Varna olm – Round 11 – Minev, Nikolay N – 1/2-1/2 – Dueckstein, Andreas – G450 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. cxd5 exd5 9. Bd3 Nbd7 10. O-O O-O
1963 CSR Ch – Round 4 – Dolezal, Jiri – 1-0 – Blatny, Frantisek – G31 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 e5 8. Ng3 d6 9. e4 Nfd7 10. Nf5 Bf6
1963 Enschede zt – Round 1 – Gligorić, Svetozar – 1-0 – Mazzoni, Guido – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bd6 7. Ng3 h5 8. d5 h4 9. Nge4 Be5 10. f4 Bxc3+
1964 GBR Ch 51st – Round 2.3 – Haygarth, Michael John – 1/2-1/2 – Cafferty, Bernard – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. f3 d5 9. cxd5 exd5 10. b4 c5
1964 Tel Aviv olm prel – Round 4 – Ghitescu, Theodor – 1-0 – Colon Cortegoso, Marta – G132 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. cxd5 exd5 9. b4 O-O 10. Be2 Nbd7
1965 Northern Open – Round 3 – Griffiths, Peter C – 1-0 – Russ, Arje – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 O-O 8. f3 d5 9. b4 c6 10. Bd3 Nbd7
1965 Pardubice – Round 6 – Petras, Jan – 0-1 – Florian, Jaromir – G49 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Nf4 d6 8. d5 e5 9. Nd3 c6 10. e4 b5
1966 Malaga Malaga ESP – Round 8 – Saborido Carre, Rafael – 1-0 – Ulvestad, Olaf – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. e4 e5 9. Ng3 Re8 10. Bd3 d6
1967 URS Team Ch – Round 1 – Furman, Slavomir – 1-0 – Veresov, Gavriil – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Ng3 d6 9. Be2 c6 10. e4 Na6
1968 Alma Ata ch-URS – Round 9 – Platonov, Igor – 0-1 – Kholmov, Ratmir D – G83 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. cxd5 exd5 9. Be2 O-O 10. O-O Re8
1968 Islington Open 4th – Round 2 – Botterill, George S. – 1-0 – Kottnauer, Cenek – G3 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. cxd5 exd5 9. Bd3 O-O 10. O-O Re8
1968 Lugano olm - Round 1 - Korchnoi, Viktor - 1-0 - Alcala Delgado, Rafael Gabriel - G94 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 exd5 8. cxd5 O-O 9. g3 a5 10. Bg2 Na6
1968 Lugano olm - Round 1 - Najdorf, Miguel - 1/2-1/2 - Balinas, Rosendo C - G96 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. e4 exd5 9. cxd5 Re8 10. g3 Bc5
1969 Monte Carlo-B – Round 2 – Conan, Christophe – 0-1 – Gereben, Erno – G6 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. cxd5 exd5 9. Bd3 O-O 10. O-O Nbd7
1971 Hoogovens – Round 6 – Gligoric, Svetozar – 1/2-1/2 – Andersson, Ulf – G70 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bxc3+ 7. Nxc3 d5 8. cxd5 exd5 9. b4 O-O 10. Bd3 Nbd7
1975 URS Team Ch – Round ? – Siniavsky, A. – 0-1 – Nurmamedov, Mammed – G132 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Nf4 d6 8. Be2 Nbd7 9. O-O e5 10. Nfd5 exd4
20. European Teams 2015 – Round 1.14 – Geirnaert, Steven – 1/2-1/2 – Anton Guijarro, David – G14 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bd6 7. d5 O-O 8. g3 a5 9. Bg2 Na6 10. b3 exd5
57. ch-RUS 2004 – Round 8 – Bareev, Evgeny – 1/2-1/2 – Morozevich, Alexander – G31 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bd6 7. Qd3 c5 8. e4 cxd4 9. Nxd4 O-O 10. Bg5 h6
Botvinnik Mem Rapid Match 2001 – Round 6 – Kasparov, Garry – 0-1 – Kramnik, Vladimir – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Ng3 Re8 9. Be2 Bf8 10. e4 d6
World Blitz 2016 – Round 19.8 – Ivanchuk, Vasyl – 1/2-1/2 – Jobava, Baadur – G772 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Nf4 a5 9. Be2 Na6 10. Rb1 Nc5
World Blitz 2017 – Round 11.41 – Tregubov, Pavel V. – 1-0 – Almasi, Zoltan – G585 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. Ng3 d5 8. cxd5 Nxd5 9. Nxd5 Qxd5 10. e4 Qd7
World Blitz 2018 – Round 9.14 – Kazhgaleyev, Murtas – 0-1 – Jobava, Baadur – G515 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 a5 8. Ng3 Na6 9. e4 O-O 10. Bd3 Nc5
World Blitz 2019 – Round 20.20 – Korobov, Anton – 1-0 – Predke, Alexandr – G1337 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Be7 7. d5 O-O 8. Ng3 Re8 9. Be2 Bf8 10. O-O d6
World Rapid 2019 – Round 6.19 – Nikolov, Nikolay Petrov – 1-0 – Ponkratov, Pavel – G373 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Bb7 6. a3 Bd6 7. f3 Be7 8. e4 d5 9. cxd5 exd5 10. e5 Nfd7

E44b — Nimzowitsch (1925)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Bb7

Les coups candidats

6.a3 — 98.2% (2104 parties)

Ambassadeurs : Foisor, Ovidiu-Doru (11x), Kengis, Edvins (9x), Vaisser, Anatoli (7x), Cafferty, Bernard (5x), Meijers, Viesturs (5x), Ererdem, Gani Eren (5x), Rozentalis, Eduardas (5x), Gligoric, Sofija (4x)

6.f3 — 0.7% (15 parties)

Ambassadeurs : Murrell, J. (1x), Shallcross, D. (1x), Siegel, Paul (1x), Troeger, Paul (1x), Zavodny, Zdenek (1x), Morkusova, I. (1x), Fournarakos, Gerasimos (1x), Girvalakis, Spyridon (1x)

6.Ng3 — 0.7% (15 parties)

Ambassadeurs : Brioschi, Camillo (3x), Huguet, Horacio E (1x), Amaro, Lucas Ibrair (1x), Zumpf, Mathias (1x), Ammon, Dirk (1x), Bentley, Bill (1x), Asquith, Tom (1x), Brynhammar, Hilding (1x)

6.Qc2 — 0.1% (3 parties)

Ambassadeurs : Palliser, Richard J D (1x), Dickinson, Tim R (1x), Arranz Arranz, Javier (1x), Bernal Caamano, Jose Luis (1x), Ferreira, Jose Carlos (1x), De Paula, Patrick Borges (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.a3	6.f3	6.Ng3	6.Qc2
<1800	111	97%	—	3%	—
1800-2200	901	98%	1%	1%	0%
2200-2600	860	99%	0%	0%	—
2600+	20	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	6.a3	6.f3	6.Ng3	6.Qc2
1950s	35	94%	3%	3%	—
1960s	32	97%	3%	—	—
1970s	73	97%	1%	1%	—
1980s	118	98%	—	2%	—
1990s	281	97%	1%	0%	1%
2000s	446	99%	1%	0%	—
2010s	903	98%	1%	1%	0%
2020s	254	100%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.a3	98%	100%	▲ +2.0%
6.f3	1%	0%	▼ -0.8%
6.Ng3	1%	0%	▼ -0.9%
6.Qc2	0%	0%	-0.1%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 1 partie
Karpov, Anatoly — 1 partie
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

6.a3 — 98.2% (2104 parties)

1950 — Collins Justin vs Jackson, Oliver A — 1-0 — New Jersey
1950 — Kottnauer, Cenek vs Dimitrov Petar — 1-0 — CSR-BUL Prague CZE
1950 — Bondarevsky, Igor vs Kan, Ilya A — 1-0 — Leningrad RUS
1951 — Letelier Martner, Rene vs Kalkstein, Rodolfo — 1/2-1/2 — San Rafael
1951 — Almgren, Sven vs Schmitt, Aaron — 1-0 — San Luis ARG

6.f3 — 0.7% (15 parties)

1950 — Siegel, Paul vs Troeger, Paul — 0-1 — FRG-ch Bad Pyrmont GER
1961 — Murrell, J. vs Shallcross, D. — 0-1 — British ch
1973 — Zavodny, Zdenek vs Morkusova, I. — 1-0 — Brno CZE
1999 — Fournarakos, Gerasimos vs Girvalakis, Spyridon — 1/2-1/2 — Athens GRE
1999 — Blank Goncalves, Eduardo vs Santos, Rafael G — 1-0 — Americana BRA

6.Ng3 — 0.7% (15 parties)

1951 — Huguet, Horacio E vs Amaro, Lucas Ibrair — 1-0 — Buenos Aires ARG
1975 — Brynhammar, Hilding vs Orman, Jean-Claude — 1-0 — ?
1987 — Zumpf, Mathias vs Ammon, Dirk — 1-0 — St Ingbert
1989 — Bentley, Bill vs Asquith, Tom — 1-0 — Edmonton CAN
1992 — Kluss, Kai vs Boudre, Jean-Pierre — 1-0 — Cannes FRA

6.Qc2 — 0.1% (3 parties)

1992 — Arranz Arranz, Javier vs Bernal Caamano, Jose Luis — 0-1 — Ponferrada
1998 — Palliser, Richard J D vs Dickinson, Tim R — 1-0 — GBR
2015 — Ferreira, Jose Carlos vs De Paula, Patrick Borges — 0-1 — Juiz de Fora

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