E42d — Nimzo-Indian: 4.e3 c5 5.Ne2 cxd4 6.exd4 d5

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2 cxd4 6.exd4 d5 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ 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'aile_dame (3 contre 2), les cases fortes f4 et b5, la paire de fous et la colonne semi-ouverte e.

Côté adverse. Le fou enfermé en c8 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) ; Bg5 (Clouer Nf6) ; Bd3 (Développer Bf1) ; Tour sur colonne e.

♚ 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'centre (2 contre 1), la case forte e4, un fou actif en b4, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Les fous enfermés en c1 et f1, 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, le fou c8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...Bd7 (PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bf5)) ; ...Nbd7 (Développer Nb8) ; ...e5 (Rupture) ; Tour sur colonne c.

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● e6→d5, f7→e6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

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

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● e	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 0)
Bb4		● Bb4 Actif (mob. 7)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Clouages	● knight c3	—
Non développées	4 (c1, f1, a1, h1)	4 (b8, c8, 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
1930 Hamburg olm – Round 1 – Rubinstein, Akiba – 1-0 – Maroczy, Geza – G24 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 b6 9. b4 bxc5 10. dxc5 e5
1930 Liege – Round 5 – Rubinstein, Akiba – 0-1 – Ahues, Carl – G25 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Bxc3+ 8. Nxc3 dxc4 9. Bxc4 O-O 10. O-O Nc6
1931 Trebitsch mem14 – Round 5 – Becker, Albert – 1-0 – Kunert, Franz – G15 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 Nc6 9. b4 e5 10. dxe5 Nxe5
1945 Prague Prague CZE – Round 9 – Richter, Emil – 1-0 – Stulik, Vlastimil – G17 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. Nf4 dxc4 9. Bxc4 O-O 10. O-O Nbd7
1948 South Fallsburg ch-USA – Round 1 – Heitner, I. – 1/2-1/2 – Evans Lianda – G31 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 O-O 9. b4 b6 10. g3 a5
1951 USA-op52 – Round 5 – Kashdan, Isaac – 0-1 – Gonzalez, Juan Dr – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 Nc6 9. Bf4 O-O 10. g3 b6
1951 YUG Ch 7th – Round 11 – Germek, Milan – 1-0 – Gligoric, Svetozar – G92 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 O-O 9. b4 b6 10. Ng3 a5
1951 Zonal – Round 4 – Donner, Jan-Hein – 1/2-1/2 – Kramer, Haije – G9 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Bxc3+ 8. Nxc3 dxc4 9. Bxc4 O-O 10. O-O Nc6
1952 Havana – Round 3 – Steiner, Herman – 1/2-1/2 – Abad Gonzalez, Jose Miguel – G49 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 Nc6 9. b4 a6 10. Ng3 e5
1953 POL-ch11 – Round 12 – Makarczyk, Kazimierz – 0-1 – Sliwa, Bogdan – G74 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 O-O 9. b4 b6 10. Ng3 Bb7
1955 Hungary Ch – Round 1 – Barcza, Gedeon – 1/2-1/2 – Portisch, Lajos – G21 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Qd3 e5 9. a3 Bxc3+ 10. Nxc3 O-O
1955 Prague tm Prague CZE – Round 2 – Makarczyk, Kazimierz – 0-1 – Cucka, Josef – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 b6 9. b4 O-O 10. Ng3 bxc5
1956 URS Ch, semi final – Round 18 – Antoshin, Vladimir S – 1/2-1/2 – Zurakhov, Vladlen Y – G119 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. cxd5 Nxd5 9. Nxd5 exd5 10. Nc3 O-O
1957 DDR Ch 08th – Round 10 – Bertholdt, Dieter – 1-0 – Handel, Horst – G68 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Nc6 8. a3 Bxc3+ 9. Nxc3 O-O 10. Be3 e5
1957 Leningrad Ch – Round 3 – Ragozin, Viacheslav – 0-1 – Cherepkov, Alexander V – G21 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 b6 9. b4 bxc5 10. dxc5 e5
1957 Toronto wch-jr – Round 2 – Selimanov – 0-1 – Gerusel, Mathias – G6 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. Nf4 dxc4 9. Bxc4 O-O 10. O-O Nbd7
1957 WchT U26 04th – Round 3.4 – Juettler Helmut – 0-1 – Gipslis, Aivars – G37 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 O-O 10. a3 Ba5
1958 Munich olm fin-B – Round 2.2 – Ravn, Peter Henrik – 0-1 – Forintos, Gyozo V – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nc6 9. a3 Bxc3 10. Nxc3 O-O
1958 Portoroz Interzonal – Round 12 – Averbakh, Yuri L – 1/2-1/2 – Panno, Oscar – G110 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 b6 10. a3 Bxc3
1958 Riga Ch – Round 5 – Stoyanov, Bozhidar Ivanov – 1-0 – Klavins, Janis – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 O-O 8. a3 Bxc3+ 9. Nxc3 b6 10. b4 e5
1958 UKR Ch – Round 12 – Sakharov, Yuri N – 1-0 – Bannik, Anatolij – G54 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 a6 10. a3 Ba5
1958 WchT U26 fin-A 05th – Round 4 – Saidy Gaggioli, Marie – 0-1 – Padevsky, Nikola – G38 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nc6 9. Nxe4 dxe4 10. Bxb4 Nxb4
1958 WchT U26 fin-A 05th – Round 7 – Bertholdt, Dieter – 1/2-1/2 – Kolarov, Atanas Stefanov – G74 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Bxc3 9. Nxc3 O-O 10. Nxe4 dxe4
1959 Asztalos Memorial – Round 4 – Uhlmann, Wolfgang – 1-0 – Neikirkh, Oleg – G16 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Nc6 8. a3 Ba5 9. g3 e5 10. b4 Bc7
1959 Krakow – Round 2 – Sliwa, Bogdan – 1-0 – Forintos, Gyozo V – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nc6 9. Nxe4 dxe4 10. Bxb4 Nxb4
1959 Tbilisi ch-URS – Round 12 – Polugaevsky, Lev – 1-0 – Spassky, Boris V. – G97 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Nc6 8. a3 Ba5 9. b4 Bc7 10. g3 e5
1959 URS-ch26 – Round 16 – Polugaevsky, Lev – 1-0 – Taimanov, Mark E – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nc6 9. Nxe4 dxe4 10. Bxb4 Nxb4
1959 Wch U20 fin-A – Round 7 – Hamann, Svend – 1/2-1/2 – Kuijpers, Frans – G25 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Nc6 8. Bd2 Ne4 9. Nxe4 dxe4 10. Bxb4 Nxb4
1959 Wch U20 prel-A – Round 5 – Hamann, Svend – 1-0 – Wostyn, Hendrik – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nc6 9. Nxe4 dxe4 10. Bxb4 Nxb4
1960 Baltic Nations – Round 9 – Bertholdt, Dieter – 1-0 – Kondratiev, Pavel E – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 O-O 8. a3 Ba5 9. Bf4 Nc6 10. b4 Bc7
1960 Corr Golden Knights – Round ? – Reveal, David – 0-1 – Zalys, Ignas – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 O-O 9. b4 b6 10. g3 bxc5
1962 Marianske Lazne – Round 13 – Sliwa, Bogdan – 1-0 – Thorbergsson, Freysteinn – G79 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 e5 8. a3 Bxc3+ 9. Nxc3 exd4 10. Qxd4 O-O
1963 HUN-RSFSR – Round 4.5 – Antoshin, Vladimir S – 0-1 – Forintos, Gyozo V – G30 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 b6 10. a3 Bxc3
1963 Leningrad – Round ? – Zilberstein, Valery I – 1-0 – Estrin, Yakov – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 O-O 8. a3 Bxc3+ 9. Nxc3 b6 10. Be2 bxc5
1964 Amsterdam Interzonal – Round 5 – Evans Lianda – 1/2-1/2 – Lengyel, Laszlo – G42 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Bxc3+ 8. Nxc3 dxc4 9. Bxc4 Nc6 10. Be3 O-O
1964 Tel Aviv olm fin-A – Round 11 – Ghitescu, Theodor – 1/2-1/2 – Pomar Salamanca, Arturo – G232 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Nc6 8. a3 Bxc3+ 9. Nxc3 Ne4 10. Bb5 Qa5
1965 Belgrade – Round 3 – Karaklajic, Nikola – 0-1 – Ostojic, Predrag – G15 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 O-O 9. g3 b6 10. cxb6 Qxb6
1965 Copenhagen – Round 9 – Hamann, Svend – 1-0 – Nielsen, Jorgen G. – G79 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 e5 8. a3 Bxc3+ 9. Nxc3 exd4 10. Qxd4 O-O
1966 La Habana olm fin-A – Round 6 – Ghitescu, Theodor – 1-0 – Bolbochan, J. – G100 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 O-O 8. a3 Bxc3+ 9. Nxc3 b6 10. Be2 a5
1966 Mar del Plata – Round 13 – Pilnik, Herman – 1-0 – Sanguineti, Raúl Carlos – G59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. Ng3 O-O 9. Be3 b6 10. cxd5 Nxd5
1966 Tel Aviv – Round 1 – Gligorić, Svetozar – 1/2-1/2 – Matanovic, Aleksandar – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. Nf4 O-O 9. Be3 Nc6 10. cxd5 Nxd5
1966 US Open – Round 5 – Saidy, Anthony – 1-0 – Goichberg, William – G26 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Nc6 8. a3 Bxc3+ 9. Nxc3 O-O 10. Bg5 e5
1967 Halle zt – Round 4 – Uhlmann, Wolfgang – 1/2-1/2 – Havansi, Erkki E.T. – G17 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 b6 10. a3 Bxc3
1968 Kiev (Ukraine) – Round ? – Nikolaevsky, Yuri V – 1-0 – Novopashin, Arkady – G18 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. c5 O-O 9. Bf4 b6 10. cxb6 Qxb6
1969 FRG Ch – Round 5 – Freise, Helmut – 1-0 – Rellstab, Ludwig – G6 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 Nc6 10. a3 Ba5
1969 Palma de Mallorca – Round 10 – Panno, Oscar – 1/2-1/2 – Najdorf, Miguel – G86 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Bxc3+ 8. Nxc3 dxc4 9. Bxc4 Nc6 10. Be3 O-O
1969 Palma de Mallorca – Round 6 – Hort, Vlastimil – 1/2-1/2 – Najdorf, Miguel – G53 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Bxc3+ 8. Nxc3 dxc4 9. Bxc4 Nc6 10. Be3 O-O
40. Olympiad Open 2012 – Round 10.10 – Gelfand, Boris – 1/2-1/2 – Mchedlishvili, Mikheil – G539 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. Nf4 dxc4 9. Bxc4 O-O 10. O-O Nc6
42. Olympiad 2016 – Round 6.3 – Mchedlishvili, Mikheil – 1/2-1/2 – Laznicka, Viktor – G437 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Bxc3+ 8. Nxc3 dxc4 9. Bxc4 Nc6 10. Be3 O-O
FIDE World Cup 2015 – Round 2.3 – Le, Quang Liem – 1/2-1/2 – Vitiugov, Nikita – G268 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 a5 10. a3 Bxc3
Interpolis 1982 – Round 10 – Torre, Eugenio – 1-0 – Larsen, Bent – G46 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Bxc3+ 8. Nxc3 O-O 9. c5 Nc6 10. Bg5 h6
Linares 1981 – Round 1 – Gligoric, Svetozar – 1/2-1/2 – Spassky, Boris V. – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Nc6 8. a3 Ba5 9. b4 Bc7 10. g3 e5
London P&D/GLC Kings 1984 – Round 1 – Miles, Anthony J – 1/2-1/2 – Torre, Eugenio – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 a5 10. a3 Bxc3
Madrid rapid 1988 – Round 2 – Beliavsky, Alexander G – 0-1 – Ljubojevic, Ljubomir – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. Nf4 O-O 9. cxd5 Nxd5 10. Ncxd5 exd5
Manila Interzonal 1990 – Round 10 – Rechlis, Gad – 1-0 – Portisch, Lajos – G165 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 a5 10. a3 Bxc3
Manila Interzonal 1990 – Round 3 – Lautier, Joel – 1-0 – Yudasin, Leonid – G46 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 a5 10. a3 Bxc3
Moskou ch-URS 1973 – Round 1 – Korchnoi, Viktor – 1/2-1/2 – Spassky, Boris V. – G6 1. c4 e6 2. Nc3 Nf6 3. d4 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 Nc6 10. a3 Ba5
Niksic 1983 – Round 2 – Gligoric, Svetozar – 1/2-1/2 – Seirawan, Yasser – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 a5 10. a3 Bxc3
SuperUnited Blitz 2023 – Round 1.5 – Lupulescu, Constantin – 1/2-1/2 – Duda, Jacob – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Bxc3+ 8. Nxc3 dxc4 9. Bxc4 O-O 10. O-O Nc6
Thessaloniki olm 1988 – Round 12 – Hoi, Carsten – 0-1 – Beliavsky, Alexander G – G104 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. a3 Be7 8. Nf4 dxc4 9. Bxc4 Nc6 10. d5 exd5
World Championship 29th 1978 – Round 3 – Korchnoi, Viktor – 1/2-1/2 – Karpov, Anatoly – G2 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 a5 10. a3 Bxc3
World Cup 1991 – Round 2 – Speelman, Jon S – 1/2-1/2 – Khalifman, Alexander – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 a5 10. a3 Bxc3
World Cup 1991 – Round 2 – Speelman, Jon S – 1/2-1/2 – Khalifman, Alexander – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 a5 10. a3 Bxc3

E42d —

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2 cxd4 6.exd4 d5

Eval: [+0.24]

Les coups candidats

7.a3 — 55.5% (1007 parties)

Ambassadeurs : Browne, Walter Shawn (8x), Pinter, Jozsef (6x), Chow, Albert (6x), Zalys, Ignas (5x), Marjanovic, Slavoljub (5x), Epishin, Vladimir (5x), Torre, Eugenio (5x), Kosic, Dragan (5x)

7.c5 — 43.8% (794 parties)

Ambassadeurs : Vaisser, Anatoly (12x), Yudasin, Leonid (10x), Van der Wiel, John T.H. (9x), Muir, Andrew J (8x), Guliev, Sarhan (8x), Browne, Walter Shawn (7x), Knaak, Rainer (6x), Shcherbakov, Ruslan (6x)

7.cxd5 — 0.4% (7 parties)

Ambassadeurs : O'Connell, Pat (1x), Galvagni David (1x), Gaasland, Glenn (1x), Revil, Bjorn (1x), Veits, Janis (1x), Holmberg, Per-Arne (1x), Szymanski, Maciej (1x), Lubczynski, Rafal (1x)

7.Bg5 — 0.1% (2 parties)

Ambassadeurs : Altan-Och, Genden (1x), Romanov, Sergey Anatolievich (1x), Christensen, Bo Garner (1x), Christensen, Lasse (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.a3	7.c5	7.cxd5	7.Bg5
<1800	17	47%	47%	6%	—
1800-2200	320	62%	36%	1%	0%
2200-2600	1027	57%	43%	0%	0%
2600+	55	35%	65%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7.a3	7.c5	7.cxd5	7.Bg5
1920s	1	—	100%	—	—
1930s	8	88%	12%	—	—
1940s	5	100%	—	—	—
1950s	50	44%	56%	—	—
1960s	48	44%	56%	—	—
1970s	71	48%	52%	—	—
1980s	261	52%	48%	—	—
1990s	492	43%	55%	0%	0%
2000s	364	66%	33%	1%	—
2010s	419	68%	32%	0%	—
2020s	94	47%	52%	1%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.a3	68%	47%	▼ -20.7%
7.c5	32%	52%	▲ +20.1%
7.cxd5	0%	1%	▲ +0.6%
7.Bg5	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 1 partie
Botvinnik, Mikhail — 1 partie
Karpov, Anatoly — 1 partie
Karpov, Aleksandr — 1 partie
Kasparov, Garry — 1 partie
Tal, Mikhail — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

7.a3 — 55.5% (1007 parties)

1930 — Rubinstein, Akiba vs Nemethne Takacs, Gyongyi — 1/2-1/2 — Brussels BEL
1930 — Rubinstein, Akiba vs Maroczy, Geza — 1-0 — Hamburg olm
1930 — Rubinstein, Akiba vs Maroczy, Geza — 1-0 — Hamburg GER
1930 — Rubinstein, Akiba vs Ahues, Carl — 0-1 — Liege
1931 — Becker, Albert vs Kunert, Franz — 1-0 — Vienna AUT

7.c5 — 43.8% (794 parties)

1927 — Baratz, Abraham vs Blondel Bertrand, Henri — 1-0 — Paris FRA
1932 — ColleRubinstein vs LandauTartakover — 1/2-1/2 — Rotterdam NED
1955 — Barcza, Gedeon vs Portisch, Lajos — 1/2-1/2 — Hungary ch
1955 — Wright Samuels, James vs Zalys, Ignas — 0-1 — cr Golden Knights
1956 — Barcza, Gedeon vs Pachman, Ludek — 1/2-1/2 — Warsaw POL

7.cxd5 — 0.4% (7 parties)

1997 — O'Connell, Pat vs Galvagni David — 1-0 — IECC
2004 — Gaasland, Glenn vs Revil, Bjorn — 1/2-1/2 — ?
2006 — Veits, Janis vs Holmberg, Per-Arne — 0-1 — LSS
2008 — Szymanski, Maciej vs Lubczynski, Rafal — 1-0 — Karpacz POL
2012 — Ayan, Bengu Sena vs Benidze, Gigla — 0-1 — Kesan

7.Bg5 — 0.1% (2 parties)

1992 — Christensen, Bo Garner vs Christensen, Lasse — 0-1 — Aarhus DEN
1999 — Altan-Och, Genden vs Romanov, Sergey Anatolievich — 0-1 — ICCF Email