Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→a3	● e6→d5, f7→e6
Passés	—	—
Majorité	● aile dame 3v2	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● e5 (2v1), ● g5 (2v0)	—
Cases faibles	● e4	—
Centre	● e5 (2v1)	● d5 (3v2)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● e	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bd3	● Bd3 Actif (mob. 8)
Be7		● Be7 Actif (mob. 5)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	3 (● c1, ● a1, ● h1)	3 (● 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	—	● …e6-e5

D40n — QGD: Semi-Tarrasch, 5.e3 Nc6 6.a3 cxd4 7.exd4 Be7 8.Bd3

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.e3 Nc6 6.a3 cxd4 7.exd4 Be7 8.Bd3 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Manœuvres et amélioration des pièces.

Atouts. Les Blancs s'appuient sur une majorité de pions à l'aile dame (3 contre 2), un contrôle dominant de b5, e5 et g5, un fou actif en d3 et la colonne semi-ouverte e.

Côté adverse. Un mauvais fou en c8 et le roi resté au centre.

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

Plans. O-O (Mettre le roi en sécurité, connecter les tours — 22 % des parties) ; c5 (Frapper le centre adverse — 2 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Jeu au centre (rupture e6-e5).

Atouts. Les Noirs s'appuient sur un fou actif en e7 et la colonne semi-ouverte c.

Côté adverse. Le roi resté au centre.

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

Plans. ...dxc4 (Capture en c4, Frapper le centre adverse — 76 % des parties) ; ...O-O (Mettre le roi en sécurité, connecter les tours — 23 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1904 BCF Ch 1st – Round 5 – Lee, Francis J – 1-0 – Atkins, Henry Ernest – G15 1. d4 d5 2. Nf3 c5 3. e3 Nc6 4. c4 e6 5. Nc3 Nf6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O b6 10. Re1 Bb7
1905 It (Men) Stockholm SWE – Round 7 – Rubinstein, Akiba – 1/2-1/2 – Marchand, Max – G23 1. d4 e6 2. Nf3 d5 3. c4 c5 4. e3 Nf6 5. a3 cxd4 6. exd4 Nc6 7. Nc3 Be7 8. Bd3 O-O 9. O-O dxc4 10. Bxc4 a6
1911 Karlsbad – Round 1 – Chajes, Oscar – 1/2-1/2 – Salwe, George – G12 1. c4 e6 2. d4 d5 3. e3 Nf6 4. Nc3 c5 5. Nf3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O dxc4 10. Bxc4 b6
1913 New York Progressive – Round 6 – Jaffe, Charles – 0-1 – Marshall Viele, Fabrizio Aaron – G9 1. d4 d5 2. Nf3 c5 3. e3 Nc6 4. c4 e6 5. Nc3 Nf6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 a6 10. O-O b5
1931 Argentina – Round 12 – Cristia, Jose Maria – 1/2-1/2 – Fenoglio, Virgilio – G43 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 e6 7. a3 Be7 8. Bd3 O-O 9. Bg5 dxc4 10. Bxc4 a6
1938 Lodz – Round 1 – Kolski, Jakub – 1/2-1/2 – Foltys, Jan – G48 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O b6 10. Be3 dxc4
1949 Budapest-Moscow – Round 12 – Simagin, Vladimir – 1-0 – Szabo, Laszlo – G89 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1950 Mar del Plata – Round 13 – Guimard, Carlos E – 1/2-1/2 – Trifunovic, Petar – G106 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1950 YUG-USA m radio – Round 2.3 – Trifunovic, Petar – 1/2-1/2 – Horowitz, Albert Israel – G12 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1951 Hungary Ch – Round 20 – Florian, Tibor – 1-0 – Pogats, Jozsef Jr. – G70 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 c5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1951 Mar del Plata zt – Round 7 – Guimard, Carlos E – 1/2-1/2 – Maderna, Carlos – G64 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1951 Zonal Marianske Lazne (Czech R – Round 1 – Barda, Olaf – 1-0 – Pytliakovsky A – G1 1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. e3 d5 5. d4 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O b6 10. Re1 dxc4
1953 GDR Ch – Round 6 – Schlieder, Rolf – 1-0 – Pallwitz, Otto – G17 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O Nd5
1953 Mar del Plata – Round 5 – Guimard, Carlos E – 1/2-1/2 – Maderna, Carlos – G69 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1955 Moscow Ch – Round 1 – Gusev, Yuri – 1-0 – Estrin, Yakov – G3 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 c5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1955 Prague tm – Round 5 – Alster, Ladislav – 1-0 – Florian, Tibor – G26 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1956 Alekhine Memorial – Round 1 – Botvinnik, Mikhail – 1/2-1/2 – Bronstein, David I – G5 1. c4 e6 2. Nc3 d5 3. d4 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 a6 10. Ba2 O-O
1956 Alekhine Memorial – Round 1 – Stahlberg, Gideon – 1/2-1/2 – Szabo, Ladislav – G82 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. e3 c5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1956 Candidats Tournament – Round 7 – Spassky, Boris Vasily – 0-1 – Geller, Efim P – G29 1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1957 Wageningen zt – Round 14 – Szabo, Ladislav – 1/2-1/2 – Larsen, Benjamin Holsko – G39 1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1958 It Kienbaum GER – Round 3 – Neikirkh, Oleg – 1/2-1/2 – Bertholdt, Dieter – G4 1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. d4 d5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1959 CSR Ch – Round 5 – Jares, Jakub – 1-0 – Olexa, Vilem – G34 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. e3 c5 5. d4 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O b6 10. cxd5 Nxd5
1959 HUN Ch – Round 6 – Florian, Tibor – 1/2-1/2 – Szabo, Laszlo – G4 1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. e3 d5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1959 URS Team Ch – Round 1 – Lutikov, Anatoly S – 1-0 – Danov, Alexander – G14 1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 Nd5 10. O-O O-O
1960 BUL-ch14 Sofia BUL – Round 17 – Kolarov, Atanas S. – 1-0 – Radev, Nikolai – G63 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. e3 c5 5. d4 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1960 GBR Ch 47th – Round 8.11 – Fazekas, Stephan – 1/2-1/2 – Wood, Baruch – G66 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O a6 10. c5 e5
1960 Leipzig olm prel – Round 2 – Letelier Martner, Rene – 1-0 – O'Kelly, Albéric de Galway – G54 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1960 Sao Paulo zt – Round 18 – Reinhardt, Enrique – 1/2-1/2 – Letelier Martner, Rene – G89 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. e3 c5 5. d4 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1961 Budapest-Leningrad m – Round 2.6 – Osnos, Viatcheslav – 1/2-1/2 – Dely, Peter – G9 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1961 Zevenaar – Round 10 – Beni, Alfred – 1/2-1/2 – O'Kelly, Albéric de Galway – G69 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O b6 10. b4 a5
1962 Bucharest – Round 10 – Dunkelblum, Arthur – 0-1 – Kholmov, Ratmir D – G49 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 d5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O b6 10. cxd5 exd5
1962 Varna olm – Round 9 – Kolarov, Atanas S. – 1/2-1/2 – Pachman, Ludek – G202 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 d5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1963 Budapest ch-HUN – Round 1 – Forintos, Gyozo V – 0-1 – Somogyi, Istvan – G81 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1963 Corr – Round ? – Mikenas, Vladas – 1/2-1/2 – Gonsior, Evzen – G1 1. c4 e6 2. d4 d5 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. c5 e5 10. dxe5 Ng4
1964 Bordeaux Open Bordeaux FRA – Round 10 – Clarke, Peter H – 0-1 – Darga, Klaus – G66 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O dxc4 10. Bxc4 b6
1964 Chigorin Memorial – Round 11 – Gheorghiu, Florin – 1/2-1/2 – Spassky, Boris Vasily – G73 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 d5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1964 Chigorin Memorial – Round 7 – Lein, Anatoly – 1-0 – Forintos, Gyozo V – G44 1. d4 Nf6 2. c4 c5 3. Nf3 e6 4. e3 d5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1964 Corr – Round 1 – Koblencs, Alexander – 1/2-1/2 – Kubel, H. – G3 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1964 Kiev ch-URS – Round 1 – Stein, Leon Rico – 1-0 – Peterson, Andreas – G5 1. c4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. e3 e6 5. d4 d5 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1964 Memorial M.Chigorin – Round 14 – Garcia Gonzalez, Gonzalo – 0-1 – Lein, Anatoly – G11 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. e3 c5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1965 Aalborg – Round 1 – Jakobsen, Ole – 1/2-1/2 – Holm, Sejer – G57 1. Nf3 e6 2. c4 Nf6 3. d4 c5 4. Nc3 d5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1965 Kiel Open – Round 13 – Kestler, Hans-Guenther – 1-0 – Heil, Siegfried – G62 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1965 Klasterec nad Orlici U18 6566 – Round 3 – Treybal, Dusan – 0-1 – Plachetka, Jan – G7 1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. Bd3 Be7 7. a3 cxd4 8. exd4 dxc4 9. Bxc4 O-O 10. O-O b6
1965 Mar del Plata – Round 4 – Bielicki, Carlos – 1/2-1/2 – Averbakh, Yuri L – G32 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1965 Yerevan – Round 12 – Stahlberg, G. – 1/2-1/2 – Kortchnoi, V. – G64 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O dxc4 10. Bxc4 Qc7
1965 Zinnowitz GER – Round 11 – Moehring, Guenther – 0-1 – Szilagyi, Gyorgy Laszlo – G22 1. c4 e6 2. d4 d5 3. Nf3 c5 4. e3 Nf6 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1966 Aarhus – Round 11 – Blom, Kaj – 0-1 – Holm, Sejer – G58 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. Nf3 d5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1966 La Habana olm fin-A – Round 4 – Al Tal, Ammar – 1-0 – Brinck-Claussen, Bjorn – G79 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. e3 e6 5. d4 d5 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O dxc4 10. Bxc4 b6
1967 Moscow – Round 1 – Filip, Marius Liviu – 1/2-1/2 – Spassky, Boris V. – G36 1. d4 Nf6 2. c4 c5 3. Nf3 e6 4. e3 d5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6
1968 Lugano ol (Men) qual-A – Round 1 – De Winter, Isidor – 1-0 – Giustolisi, Alberto – G5 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 d5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O Qc7
1968 Monte Carlo – Round 3 – Benko, Pal – 1/2-1/2 – Forintos, Gyozo V – G16 1. c4 c5 2. Nf3 Nc6 3. e3 Nf6 4. d4 cxd4 5. exd4 d5 6. Nc3 e6 7. a3 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1969 Praia da Rocha zt – Round 13 – Schumacher, Helmut – 1/2-1/2 – Feller, Josy – G42 1. d4 d5 2. Nf3 c5 3. e3 Nf6 4. c4 e6 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O b6 10. Re1 Bb7
1970 Palma de Mallorca Interzonal – Round 7 – Jimenez Zerquera, Eleazar – 1/2-1/2 – Ivkov, Borislav – G77 1. d4 Nf6 2. c4 c5 3. Nf3 e6 4. e3 d5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
1972 Skopje ol (Men) fin-A – Round 5 – Debarnot, Roberto – 1/2-1/2 – Trapl, Jindrich – G127 1. d4 Nf6 2. c4 c5 3. Nf3 e6 4. e3 d5 5. Nc3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O a6
Brussels blitz 1987 – Round 1 – Kasparov, Garry – 1-0 – Larsen, Bent – G99 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. e3 e6 5. d4 d5 6. a3 cxd4 7. exd4 Be7 8. Bd3 O-O 9. O-O dxc4 10. Bxc4 b6
World Blitz 2015 – Round 3.78 – Ernst, Sipke – 1-0 – Van Wely, Loek – G204 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. e3 c5 5. a3 cxd4 6. exd4 Nc6 7. Nc3 Be7 8. Bd3 dxc4 9. Bxc4 O-O 10. O-O b6

D40n — Semi-Tarrasch (1904)

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.e3 Nc6 6.a3 cxd4 7.exd4 Be7 8.Bd3

Les coups candidats

8…dxc4 — 62.8% (484 parties)

Ambassadeurs : Sveshnikov, Evgeny (7x), Forintos, Gyozo V (4x), Ivkov, Borislav (4x), Guimard, Carlos E (4x), Peterson, Andrejs (3x), Trifunovic, Petar (3x), Szabo, Laszlo (3x), Florian, Tibor (3x)

8…O-O — 32.6% (251 parties)

Ambassadeurs : Bach, Matthias (2x), Schumacher, Helmut (1x), Feller, Josy (1x), Beni, Alfred (1x), O Kelly de Galway Alberic (1x), Barda, Olaf (1x), Pytlakowski, Andrzej (1x), Clarke, Peter (1x)

8…a6 — 3.0% (23 parties)

Ambassadeurs : Carasusan Izcue, Santiago (1x), Alonso Pascual, Francisco (1x), Hagarova, Zuzana (1x), Toth Vano, Peter (1x), Bodner, Alfred (1x), Jancar, Ewald (1x), Guillet, Martin (1x), Slavkov, Ivan (1x)

8…b6 — 0.5% (4 parties)

Ambassadeurs : Baretic, Zvonimir (1x), Burdio Gracia, Delfin (1x), Borsos, Bogdan (1x), Di Lascio, Savino (1x), Schmidt, Ger1 (1x), Khanukov, Boris (1x), Dvirnyy, Danyyil (1x), Lodici, Lorenzo (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…dxc4	8…O-O	8…a6	8…b6
<1800	29	52%	31%	17%	—
1800-2200	282	49%	44%	5%	0%
2200-2600	330	75%	24%	0%	1%
2600+	2	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	8…dxc4	8…O-O	8…a6	8…b6
1950s	22	86%	14%	—	—
1960s	34	74%	26%	—	—
1970s	30	77%	20%	—	3%
1980s	48	75%	23%	2%	—
1990s	154	64%	32%	3%	—
2000s	243	56%	38%	3%	0%
2010s	193	60%	35%	4%	1%
2020s	47	66%	26%	6%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…dxc4	60%	66%	▲ +5.9%
8…O-O	35%	26%	▼ -9.2%
8…a6	4%	6%	▲ +2.2%
8…b6	1%	2%	▲ +1.6%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 4 parties
Botvinnik, Mikhail — 1 partie
Kasparov, Garry — 1 partie
Hou, Yifan — 1 partie

Parties historiques

8…dxc4 — 62.8% (484 parties)

1950 — Trifunovic, Petar vs Horowitz, Albert Israel — 1/2-1/2 — USA
1950 — Guimard, Carlos E vs Trifunovic, Petar — 1/2-1/2 — Mar del Plata ARG
1951 — Florian, Tibor vs Pogats, Jozsef Jr. — 1-0 — Budapest HUN
1951 — Guimard, Carlos E vs Maderna, Carlos — 1/2-1/2 — Mar del Plata ARG
1953 — Schlieder, Rolf vs Pallwitz, Otto — 1-0 — Jena GER

8…O-O — 32.6% (251 parties)

1951 — Barda, Olaf vs Pytlakowski, Andrzej — 1-0 — Marianske Lazne zt
1959 — Jares, Jakub vs Olexa, Vilem — 1-0 — Bratislava SVK
1959 — Kramer, Haije vs Wade, Robert G — 1/2-1/2 — Cheltenham
1960 — Fazekas, Stephan vs Wood, Baruch — 1/2-1/2 — Leicester
1961 — Beni, Alfred vs O Kelly de Galway Alberic — 1/2-1/2 — ?

8…a6 — 3.0% (23 parties)

1986 — Carasusan Izcue, Santiago vs Alonso Pascual, Francisco — 0-1 — Benidorm
1995 — Bodner, Alfred vs Jancar, Ewald — 1-0 — AUT
1998 — Guillet, Martin vs Slavkov, Ivan — 1-0 — Fouesnant FRA
1998 — Diego Enrique Linares Arias vs Frometa Castillo, Zirka — 1-0 — Semifinal Nac w
1999 — Hagarova, Zuzana vs Toth Vano, Peter — 1-0 — Presov SVK

8…b6 — 0.5% (4 parties)

1976 — Baretic, Zvonimir vs Burdio Gracia, Delfin — 1-0 — Kuortane
2009 — Borsos, Bogdan vs Di Lascio, Savino — 1-0 — Imperia
2019 — Schmidt, Ger1 vs Khanukov, Boris — 0-1 — Radebeul GER
2023 — Dvirnyy, Danyyil vs Lodici, Lorenzo — 0-1 — Monselice ITA

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