D15r — Slav: Accepted, Alekhine: 5…b5 6.a4 b4

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e3 b5 6.a4 b4 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur une majorité de pions à l'centre (2 contre 1), la case forte e5, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Le pion arriéré c6, les fous enfermés en c8 et f8, 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 (les fous c1 et f1 et les tours a1 et h1).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; Bd2 (Développer Bc1) ; Bd3 (Développer Bf1) ; h3 (Empêcher ...Bg4) ; Tour sur colonne c.

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur une majorité de pions à l'aile_dame (4 contre 2), les cases fortes g4 et d5, un avant-poste en d5, la paire de fous et la colonne semi-ouverte d.

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, plusieurs pièces dorment encore (le cavalier b8, les fous c8 et f8 et les tours a8 et h8) et le pion arriéré c6.

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...Nbd7 (Développer Nb8) ; ...Bg4 (Développer Bc8, clouer Nf3) ; ...Bd6 (Développer Bf8) ; ...c5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	● c4, ● c6
Pions isolés	—	—
Arriérés	—	● c6
Chaînes	● f2→e3, e3→d4	—
Passés	—	—
Majorité	● centre 2v1	● aile_dame 4v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (2v0)	● g4 (2v0), ● d5 (3v1)
Cases faibles	—	—
Centre	● d4 (3v1), ● e5 (2v0)	● d5 (3v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bf1	● Bf1 Non développé (mob. 3)
Bc8		● Bc8 Non développé (mob. 7)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (c1, f1, 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	semi-ouvert
Ruptures	● d4-d5, ● e3-e4	● …c6-c5, ● …e7-e6, ● …e7-e5

Partie
1922 Hastings Six-Masters – Round 1 – Alekhine, Alexander – 1-0 – Tarrasch, Siegbert – G1 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7
1922 Vienna – Round 1 – Koenig, Imre – 0-1 – Saemisch, Friedrich – G38 1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Nbd7 10. Bd2 a5
1923 Karlsbad – Round 1 – Bogoljubow, Efim – 1/2-1/2 – Gruenfeld, Ernst – G19 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1923 Maehrisch Ostrau – Round 9 – Reti, Richard – 0-1 – Lasker, Emanuel – G57 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Nbd7
1923 Montreal sim – Round 1 – Alekhine, Alexander – 1-0 – Sawyer, Joshua – G1 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 a5
1924 BCF Ch 17. Major Open – Round 5 – Rhodes, Herbert Gibson – 0-1 – Rubinstein, Akiba – G3 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Be7 10. b3 O-O
1924 BCF Ch 17th – Round 9 – Fairhurst, William – 1/2-1/2 – Atkins, Henry Ernest – G40 1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Be7 10. Bd2 a5
1924 Gyor – Round 1 – Maroczy, Geza – 1-0 – Przepiorka, Dawid – G22 1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1924 Hastings Premier Section 2 /25 5th – Round 3 – Norman, George – 1/2-1/2 – Przepiorka, Dawid – G9 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. b3 Be7
1924 Paris f-B – Round 7 – O'Hanlon, John – 0-1 – Renaud, Georges – G30 1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1925 Debrecen – Round 1 – Johner, Paul – 1-0 – Asztalos, Lajos – G6 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1925 Leningrad RUS – Round ? – Rabinovich, Ilya Mar – 0-1 – Romanovsky, Pjotr – G5 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1928 Bad Kissingen – Round 6 – Capablanca, Jose – 0-1 – Spielmann, Rudolf – G33 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. b3 c5
1928 World Championship Amateur – Round 9 – Tyroler, Alexandru – 1/2-1/2 – Euwe, Max – G27 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. Bd2 a5 10. Nc1 c5
1929 Bradley Beach – Round 4 – Turover, Isador – 1/2-1/2 – Steiner, Laszlo – G17 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. Qe2 O-O 10. Bd2 a5
1929 Karlsbad – Round 11 – Thomas, George Alan – 1/2-1/2 – Maroczy, Geza – G181 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. b3 Be7 10. Bb2 O-O
1929 Rogaska Slatina - Round 13 - Hoenlinger, Baldur - 1/2-1/2 - Flohr, Salo - G44 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. Qe2 a5 10. O-O Be7
1930 Scarborough – Round 4 – Michell, Reginald – 0-1 – Maroczy, Geza – G21 1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. Bd2 a5 10. Nc1 Be7
1931 New York – Round 2 – Horowitz, Albert Israel – 1-0 – Turover, Isador – G26 1. Nf3 d5 2. c4 c6 3. d4 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. Qe2 c5 10. O-O Be7
1931 Prague ol – Round 11 – van Doesburgh, Gerrit Roelof Diederik – 0-1 – Lundin, Erik – G39 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Be7 10. Bd2 a5
1932 Pasadena – Round 1 – Reshevsky, Samuel – 1-0 – Dake, Arthur William – G9 1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1933 Folkestone olm – Round 12 – Tartakower, Savielly – 1-0 – Maroczy, Geza – G30 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. Qe2 c5 10. e4 cxd4
1933 Folkestone olm – Round 2 – Fairhurst, William – 0-1 – Kashdan, Isaac – G5 1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1936 USA Ch New York, NY USA – Round 7 – Dake, Arthur William – 1-0 – Hanauer, Milton Loeb – G18 1. Nf3 Nf6 2. c4 c6 3. d4 d5 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Nbd7 10. Qe2 c5
1937 Hastings3738 – Round 2 – Fairhurst, William – 0-1 – Reshevsky, Samuel – G5 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Nbd7 10. Qe2 c5
1938 New York m ch-USA – Round 2 – Horowitz, Albert Israel – 0-1 – Kashdan, Isaac – G4 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1939 Amsterdam m ch-NED – Round 5 – Landau, Salo – 1/2-1/2 – Euwe, Max – G5 1. c4 c6 2. d4 d5 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Be7 10. Qe2 O-O
1939 Buenos Aires ol f-A – Round 4 – Skalicka, Karel – 1-0 – Feigin, Movsa – G66 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Be7 10. Qe2 Qc7
1941 Mar del Plata – Round 13 – Stahlberg, Gideon – 1-0 – Raud, Ilmar – G103 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 a5
1942 Moscow RUS – Round 1 – Dus Chotimirsky, Fedor – 0-1 – Smyslov, Vladimir – G12 1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Bd2 a5
1942 Verenigde Staten m ch-USA – Round 11 – Reshevsky, Samuel – 1-0 – Kashdan, Isaac – G11 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1944 Moskou ch-URS – Round 1 – Flohr, Salo – 1-0 – Ravinsky, Grigory – G6 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1944 Moskou ch-URS – Round 1 – Kotov Lundqvist, Alex – 0-1 – Smyslov, Vladimir – G7 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O c5 10. Qe2 Nbd7
1945 Mar del Plata – Round 7 – Guimard, Carlos E – 0-1 – Najdorf, Miguel – G22 1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bd6 10. Re1 Qe7
1945 Moscow Ch – Round 3 – Fridstein, German – 0-1 – Smyslov, Vasily – G16 1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7
1945 Moscow Ch – Round 8 – Zhivtsov, A. – 0-1 – Alatortsev, Vladimir N. – G37 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Ne5 a5
1945 USA-URS radio-m – Round 2 – Reshevsky, Samuel – 0-1 – Smyslov, Vladimir – G9 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7
1946 Groningen – Round 15 – Flohr, Salo – 1-0 – O'Kelly, Albéric de Galway – G68 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O c5 10. Qe2 Nbd7
1946 Groningen – Round 6 – Guimard, Carlos E – 0-1 – Flohr, Salo – G30 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Be7 10. Qe2 Nbd7
1946 Helsinki Helsinki FIN – Round 2 – Ragozin, Viacheslav – 1/2-1/2 – Ojanen, Kaarle S – G4 1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O Bb7 10. Qe2 O-O
1946 Staunton, Groningen NED – Round 16 – Denker, Arnold S – 1/2-1/2 – Yanofsky, Daniel Abraham – G57 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1947 Berlin GER – Round 6 – Lehmann, Heinz – 0-1 – Teschner, Rudolf – G5 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Nbd7
1947 GBR Ch 34th – Round 8 – Blow, Ronald – 0-1 – Fairhurst, William – G34 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Bd2 a5
1947 Yugoslavia Ch – Round 14 – Markovic, Miroslav – 1-0 – Tomovic, Vasilje – G67 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7
1948 JUG Ch – Round 8 – Gligorić, Svetozar – 1-0 – Simonovic, Borko – G33 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Be7 10. Qe2 O-O
1949 Budapest-Moscow – Round 13 – Kotov Lundqvist, Alex – 1-0 – Szily, Jozsef – G93 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1949 CAN Ch – Round 7 – Brunet, Phil – 0-1 – Yanofsky, Daniel Abraham – G14 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. Bd2 a5 10. Qe2 O-O
1949 Trencianske-Teplice – Round 6 – Wade, Robert G – 0-1 – Rossolimo, Nicolas – G37 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Bd2 a5
1950 BCF Ch 37th – Round 3 – Fairhurst, William – 1/2-1/2 – Katz, Jacob – G10 1. c4 Nf6 2. Nc3 d5 3. d4 c6 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Be7 10. Qe2 O-O
1950 Corr – Round 1 – Van Scheltinga, Theo – 1/2-1/2 – Purdy, Cecil J S – G7 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. a5 Ba6 10. Bxa6 Nxa6
1950 Dubrovnik olm – Round 12 – Hugot, Claude – 1-0 – Shainswit, George – G169 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 c6 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 a5
1950 HUN-ch06 – Round 1 – Benko, Pal – 1-0 – Bely, Miklos – G11 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Nbd7 10. Bd2 a5
1950 Hungary – Round 1 – Füster, Géza – 1-0 – Molnar, Istvan – G10 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7
1951 Buenos Aires – Round 15 – Shocron, Ruben – 1/2-1/2 – Alonso-Lej De Las Casas, Fernando – G85 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1951 Mar del Plata zt – Round 20 – Alvarez Martin, Pedro – 1/2-1/2 – Bolbochan, J. – G196 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. Qe2 Bb7 10. O-O c5
1952 ARG-ch31 Mayor – Round 10 – Leiva, Juan Carlos – 0-1 – Incutto, Carlos – G6 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Be7 10. Qe2 c5
1952 Buenos Aires – Round 10 – Leiva, JC. – 0-1 – Incutto, Carlos – G54 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Be7 10. Qe2 c5
1952 Miedzyzdroje – Round 8 – Balanel, Ion – 1-0 – Litmanowicz, Wladyslaw – G46 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Be7 10. Qe2 O-O
1952 Moscow Ch – Round 1 – Flohr, Salo – 1/2-1/2 – Kotov Lundqvist, Alex – G1 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7
1952 Saltsjobaden Interzonal – Round 2 – Averbakh, Yuri L – 1-0 – Wade, Robert G – G10 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. Qe2 Bb7 10. O-O O-O
1952 URS ch sf – Round 9 – Terpugov, Evgeny – 1-0 – Klavins, Janis – G56 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. Bd2 a5 10. Nc1 Bb7
1953 Hastings5354 – Round 5 – Wade, Robert G – 0-1 – Tartakower, Savielly – G20 1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. Qe2 c5 10. O-O Nbd7
1953 Milan 2nd – Round 7 – Engalicev, Nicolas – 1/2-1/2 – Kottnauer, Cenek – G21 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Ba6 9. Qd3 Bxc4 10. Qxc4 Qd5
1953 Wch U20 qual – Round 6 – Ivkov, Borislav – 1-0 – Penrose, Jonathan – G20 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. b3 Bb7
1954 ARG Ch – Round 10 – Huguet, Horacio E – 1-0 – Maderna, Carlos – G17 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Be7 10. Qe2 Bb7
1954 Pan American Ch 2nd – Round 1 – Evans, Larry M – 0-1 – Rossolimo, Nicolas – G1 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Nbd7 10. Bd2 a5
1955 DDR-DEN – Round 1.8 – Muehlberg, Siegfried – 1/2-1/2 – Enevoldsen, Harald – G5 1. c4 c6 2. Nf3 d5 3. d4 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. Qe2 c5
1956 Dresden – Round 13 – Andersen, Borge – 1/2-1/2 – Sterner, Olof – G83 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Bb7 10. a5 Qxa5
1956 Moscow olm fin-A – Round 8 – Alster, Ladislav – 0-1 – Beli, Mark – G125 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. Qe2 Bb7 10. e4 c5
1956 URS Ch, semi final – Round 9 – Krogius, Nikolai V – 1/2-1/2 – Voronkov, Boris – G78 1. c4 c6 2. d4 d5 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7
1957 Mar del Plata – Round 1 – Panno, Oscar – 1/2-1/2 – Behrensen, Joern – G8 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7
1957 USA Ch Open 58th – Round 9 – Brandts, Paul – 1-0 – Fuster, Geza – G61 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Nbd7 10. Bd2 a5
1958 Clare Benedict Cup 05th – Round 4 – Donner, Jan-Hein – 1-0 – Auer, Franz – G26 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. Qe2 O-O 10. O-O Nbd7
1959 Alekhine Memorial – Round 5 – Lutikov, Anatoly S – 0-1 – Olafsson, Fridrik – G24 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 a5 8. Bxc4 e6 9. O-O Nbd7 10. Bd2 Be7
1959 Marianske Lazne – Round 1 – Szabo, Laszlo – 1-0 – Radovici, Corvin – G3 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. Qe2 O-O 10. O-O a5
1959 Marianske Lazne – Round 15 – Alster, Ladislav – 1-0 – Herink, Miroslav – G99 1. c4 Nf6 2. Nf3 c6 3. d4 d5 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. Qe2 Be7 10. e4 a5
1963 URS Team Ch Moscow RUS – Round 1 – Antoshin, Vladimir S – 1-0 – Demirkhanian, Adolf – G6 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 c5 9. O-O Nc6 10. Bb5 Bd7
1964 Kiev ch-URS – Round ? – Averbakh, Yuri L – 1/2-1/2 – Shamkovich, Leonid – G139 1. c4 Nf6 2. Nc3 c6 3. d4 d5 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. Qe2 c5 10. O-O Nbd7
1965 Hastings ch-BCF – Round 3 – Fazekas, Stephan – 1-0 – Holmes, H. – G37 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Be7 10. Qc2 O-O
1965 USSR – Round 1 – Gufeld, Eduard – 1-0 – Sakharov, Yuri G. – G3 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Bd2 a5
1966 URS Team Ch – Round ? – Shamkovich, Leonid – 0-1 – Lazarev, Efim M. – G2 1. c4 c6 2. Nf3 d5 3. d4 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Ne2 e6 8. Nf4 Ba6 9. Ne5 Be7 10. Bxc4 Bxc4
1967 ROM Ch – Round 13 – Fischer, Johann – 1/2-1/2 – Reicher, Emanoil-George – G87 1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. b3 Bb7 10. Bb2 c5
1967 Skopje – Round 1 – Kholmov, Ratmir D – 1-0 – Knezevic, Milorad – G3 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Bb7 9. O-O Nbd7 10. Qe2 Be7
Olympiad 2002 – Round 3 – Graf, Adrian – 1/2-1/2 – Motwani Prashant – G60 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Nbd7 9. O-O Be7 10. Qe2 O-O

D15r — Accepted Alekhine:

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e3 b5 6.a4 b4

Eval: [+0.01]

Les coups candidats

7.Na2 — 62.4% (940 parties)

Ambassadeurs : Lechtynsky, Jiri (12x), Iotov, Valentin (8x), Alekhine, Alexander (6x), Reshevsky, Samuel (6x), Smyslov, Vladimir (6x), Flohr, Salo (5x), Fairhurst, William (5x), Dimitrov, Vladimir (5x)

7.Nb1 — 35.4% (533 parties) →

Ambassadeurs : Schneider, Ilja (8x), Nikolic, Predrag (8x), Videki, Sandor (6x), Grivas, Efstratios (6x), Landau, Salo (5x), Euwe, Max (5x), Stahlberg, Gideon (5x), Hellsten, Johan (5x)

7.Ne2 — 2.1% (31 parties)

Ambassadeurs : Romanishin, Oleg M (6x), Bosboom, Manuel (2x), Shamkovich, Leonid (1x), Lazarev, Efim M. (1x), Middelburg, Tom (1x), Gormally, Daniel W (1x), Summerscale, Aaron P (1x), Zaitsev, Svjatoslav (1x)

7.Ne5 — 0.1% (1 parties)

Ambassadeurs : Francois, Denis (1x), Marino Frank (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.Na2	7.Nb1	7.Ne2	7.Ne5
<1800	47	77%	23%	—	—
1800-2200	411	72%	26%	2%	—
2200-2600	633	52%	45%	3%	—
2600+	25	24%	76%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7.Na2	7.Nb1	7.Ne2	7.Ne5
1910s	1	—	100%	—	—
1920s	48	79%	21%	—	—
1930s	37	54%	46%	—	—
1940s	47	77%	23%	—	—
1950s	41	93%	7%	—	—
1960s	30	63%	33%	3%	—
1970s	25	60%	40%	—	—
1980s	62	47%	53%	—	—
1990s	277	40%	58%	1%	0%
2000s	442	71%	26%	3%	—
2010s	434	63%	34%	3%	—
2020s	62	74%	19%	6%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.Na2	63%	74%	▲ +10.8%
7.Nb1	34%	19%	▼ -14.5%
7.Ne2	3%	6%	▲ +3.9%
7.Ne5	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 8 parties
Alekhine, Alexander — 8 parties
Smyslov, Vladimir — 7 parties
Kasparov, Garry — 3 parties
Lasker, Emanuel — 2 parties
Botvinnik, Mikhail — 1 partie

Parties historiques

7.Na2 — 62.4% (940 parties)

1922 — Alekhine, Alexander vs Tarrasch, Siegbert — 1-0 — Hastings ENG
1922 — Alekhine, Alexander vs Castillo Marin, Valentina Isabella — 0-1 — Barcelona ESP
1922 — Alekhine, Alexander vs Marin y Llovet, Valentin — 0-1 — ESP
1922 — Koenig, Imre vs Saemisch, Friedrich — 0-1 — Vienna AUT
1923 — Alekhine, Alexander vs Sawyer, Joseph — 1-0 — Montreal CAN

7.Nb1 — 35.4% (533 parties)

1913 — Kupchik, Abraham vs Duras, Oldrich — 0-1 — New York m
1920 — Alekhine, Alexander vs Pavlov-Pianov, Nikolay — 1-0 — Moscow RUS
1923 — Gruenfeld, Ernst vs Tarrasch, Siegbert — 1/2-1/2 — Maehrisch Ostrau
1924 — Havasi, Kornel vs Euwe, Max — 0-1 — Unofficial Olympiad - Final A
1924 — Asztalos, Lajos vs Seitz, Jakob Adolf — 1-0 — Gyor

7.Ne2 — 2.1% (31 parties)

1966 — Shamkovich, Leonid vs Lazarev, Efim M. — 0-1 — URS
1999 — Bosboom, Manuel vs Middelburg, Tom — 1-0 — Wijk aan Zee NED
1999 — Gormally, Daniel W vs Summerscale, Aaron P — 1/2-1/2 — York ENG
2000 — Tyomkin, Dimitri vs Lesiege, Alexandre — 0-1 — Montreal CAN
2000 — Campos Moreno, Javier B. vs Franco Ocampos, Zenon — 0-1 — Open Mallorca ESP

7.Ne5 — 0.1% (1 parties)

1996 — Francois, Denis vs Marino Frank — 1-0 — Compuserve casual

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