Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→e3, e3→d4	● b7→a6, f7→e6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

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

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bc4	● Bc4 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 1)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	3 (● c1, ● 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	mobile
Ruptures	● d4-d5	● …e6-e5

D26i — QGA: Classical, 6.Nc3 a6

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.Nc3 a6 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. O-O (Mettre le roi en sécurité, connecter les tours — 42 % des parties) ; a4 (42 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nc6 (Développer b8 — 43 % des parties) ; ...b5 (Expansion aile dame — 39 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1907 Ostende II – Round 17 – Bernstein, Olivia – 0-1 – Schories, Georg – G200 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 c5 5. e3 e6 6. Bxc4 a6 7. Bd3 Nc6 8. O-O Qc7 9. Qe2 b5 10. a4 c4
1931 Prague ol Prague CZE – Round 6 – Johner, Hans – 1-0 – Rubinstein, Akiba – G21 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Nc3 c5 6. Bxc4 a6 7. Bd3 b5 8. dxc5 Bxc5 9. a3 Bb7 10. b4 Bd6
1932 Trebitsch mem15 – Round 5 – Mueller, Hans – 0-1 – Gruenfeld, Ernst – G12 1. Nf3 d5 2. d4 Nf6 3. e3 c5 4. c4 e6 5. Nc3 dxc4 6. Bxc4 a6 7. Bd3 b5 8. dxc5 Bxc5 9. Qe2 Nbd7 10. O-O Bb7
1933 Trebitsch Memorial 16th – Round 3 – Kolnhofer, Josef – 0-1 – Gruenfeld, Ernst – G14 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c5 5. e3 dxc4 6. Bxc4 a6 7. dxc5 Bxc5 8. Qxd8+ Kxd8 9. O-O b5 10. Be2 Bb7
1934 Zuerich – Round 1 – Stahlberg, Gideon – 1-0 – Grob, Henry – G47 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 dxc4 5. e3 c5 6. Bxc4 a6 7. a4 b6 8. O-O Bb7 9. Qe2 Nc6 10. Rd1 cxd4
1935 Bad Nauheim – Round 1 – Ahues, Carl – 1/2-1/2 – Eliskases, Erich – G5 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 dxc4 5. e3 c5 6. Bxc4 a6 7. Qe2 b5 8. Bd3 Bb7 9. dxc5 Nc6 10. Bd2 Bxc5
1935 Tatatovaros it – Round 14 – Sacconi, Antonio – 1/2-1/2 – Szigeti, Miklos – G17 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 dxc4 5. e3 c5 6. Bxc4 a6 7. Ne5 b5 8. Be2 Bb7 9. Bf3 Qc7 10. O-O Nc6
1935 Warsaw POL – Round 10 – Brody, Miklos – 1/2-1/2 – Eliskases, Erich – G56 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 dxc4 5. e3 c5 6. Bxc4 a6 7. dxc5 Qxd1+ 8. Nxd1 Bxc5 9. a3 b5 10. Be2 Bb7
1957 It Gotha GER – Round 2 – Breustedt, Werner – 0-1 – Golz, Werner – G4 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Nc3 c5 6. Bxc4 a6 7. Ne5 b5 8. Bd3 Bb7 9. O-O Nbd7 10. Qe2 Be7
1958 COL Ch – Round 9 – Ramirez, Hernan – 1/2-1/2 – Alvarez Martin, Pedro – G24 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 d5 5. Nc3 dxc4 6. Bxc4 a6 7. dxc5 Qc7 8. O-O Bxc5 9. Bd3 Nbd7 10. a3 O-O
1959 CSR Ch – Round 2 – Kupka, Slavoj – 1-0 – Brach, Julius – G10 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Nc3 e6 5. e3 c5 6. Bxc4 a6 7. a4 Be7 8. O-O O-O 9. Qe2 Nc6 10. Rd1 Qc7
1960 FRG Ch U20 – Round 8 – Pfleger, Helmut, Dr. – 1-0 – Grieme, Horst – G7 1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. e3 dxc4 5. Bxc4 c5 6. Nc3 a6 7. a3 b5 8. Bb3 Bb7 9. O-O Be7 10. Qe2 cxd4
1962 Olympiad Varna BUL – Round 4 – Rantanen, Martti – 1/2-1/2 – Clarke, Paul R H – G24 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. Nc3 a6 7. a4 cxd4 8. exd4 Nc6 9. O-O Be7 10. Re1 O-O
1964 Capablanca Memorial – Round 3 – Stahlberg, Gideon – 1/2-1/2 – Darga, Klaus – G40 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. e3 d5 5. d4 dxc4 6. Bxc4 a6 7. Bd3 Nbd7 8. a4 g6 9. O-O Bg7 10. b3 cxd4
1964 Ilford qual – Round 8 – Franklin, Michael J – 1/2-1/2 – Barden, Leonard – G12 1. c4 e6 2. Nf3 d5 3. e3 c5 4. d4 dxc4 5. Bxc4 Nf6 6. Nc3 a6 7. a4 cxd4 8. exd4 Nc6 9. O-O Be7 10. Be3 O-O
1966 Tbilisi ch-URS – Round 3 – Nei, Iivo – 0-1 – Bronstein, David I – G26 1. d4 e6 2. Nf3 Nf6 3. c4 c5 4. e3 d5 5. Nc3 dxc4 6. Bxc4 a6 7. dxc5 Qxd1+ 8. Kxd1 Bxc5 9. Ke2 b5 10. Bd3 Nbd7
1967 URS Team Ch – Round 1 – Bagirov, Vladimir – 1/2-1/2 – Gurgenidze, Bukhuti – G3 1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. e3 d5 5. d4 dxc4 6. Bxc4 a6 7. a4 cxd4 8. exd4 Nc6 9. O-O Be7 10. Re1 O-O
1968 Wijk aan Zee II – Round 1 – Marovic, Drazen – 1/2-1/2 – Dan Nikolic, Slobodan – G10 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 e6 5. e3 c5 6. Bxc4 a6 7. a4 Nbd7 8. O-O Qc7 9. Qe2 Bd6 10. h3 O-O
1970 IBM – Round 8 – Donner, Jan Hein – 0-1 – Spassky, Boris V. – G30 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. Nc3 a6 7. dxc5 Qxd1+ 8. Kxd1 Bxc5 9. Bd3 Nbd7 10. Bd2 b6
American Cup Champ 2023 – Round 2.1 – Caruana, Fabiano – 1/2-1/2 – So, Wesley – G15 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. Nc3 a6 7. Bb3 b5 8. e4 cxd4 9. Nxd4 Bd6 10. O-O Bb7
Brussels 1987 – Round 1 – Korchnoi, Viktor – 0-1 – Karpov, Anatoly – G18 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 c5 6. Bxc4 a6 7. dxc5 Qxd1+ 8. Kxd1 Bxc5 9. Bd3 Nbd7 10. b3 b6
EU Team Ch 1980 – Round 7 – Miles, Anthony J – 1/2-1/2 – Portisch, Lajos – G22 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. e3 d5 5. d4 dxc4 6. Bxc4 a6 7. dxc5 Qxd1+ 8. Kxd1 Bxc5 9. a3 b5 10. Bd3 Bb7
FIDE Candidates 2018 – Round 8.2 – Grischuk, Alexander – 1-0 – Kramnik, Vladimir – G30 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. Nf3 c5 5. e3 dxc4 6. Bxc4 a6 7. Bb3 b5 8. e4 cxd4 9. Nxd4 Bb7 10. e5 Ne4

D26i — QGA: Classical (1907)

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.Nc3 a6

Les coups candidats

7.O-O — 42.4% (1037 parties) →

Ambassadeurs : Leitao, Rafael (5x), Lombardy, William J (4x), Bisguier, Arthur B (3x), Krizsany, Laszlo (3x), Debnar, Lubos (3x), Rabiega, Robert (3x), Gomez Jurado, Luis Alberto (3x), ? (3x)

7.a4 — 41.8% (1022 parties)

Ambassadeurs : Ribli, Zoltan (5x), Uhlmann, Wolfgang (3x), Sher, Miron (3x), Hodgson, Julian M (3x), Izsak, Gyula (3x), Kolcak, Marek (3x), Ftacnik, Lubomir (3x), Bielicki, Carlos (2x)

7.dxc5 — 3.9% (95 parties)

Ambassadeurs : Andersson, Ulf (4x), Portisch, Lajos (3x), Bronstein, David I (2x), Adamski, Jan (2x), Radulov, Ivan (2x), Korchnoi, Viktor (2x), Ivkov, Borislav (2x), Nei, Iivo (1x)

7.Bd3 — 3.6% (87 parties)

Ambassadeurs : Portisch, Lajos (4x), Stohl, Igor (2x), Keitlinghaus, Ludger (2x), Savon, Vladimir (2x), Jussupow, Artur (2x), Horvath, Csaba (2x), Baranov, Jury (2x), Grigorian, Levon (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.O-O	7.a4	7.dxc5	7.Bd3
<1800	149	42%	46%	3%	4%
1800-2200	850	39%	47%	2%	3%
2200-2600	1066	43%	39%	5%	4%
2600+	71	45%	27%	8%	7%

Évolution par décennie (% des parties)

Décennie	N parties	7.O-O	7.a4	7.dxc5	7.Bd3
1950s	27	70%	19%	4%	—
1960s	57	40%	49%	2%	4%
1970s	42	31%	52%	12%	—
1980s	133	38%	47%	11%	2%
1990s	419	42%	41%	4%	5%
2000s	800	40%	42%	3%	5%
2010s	636	45%	42%	3%	2%
2020s	330	45%	38%	4%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.O-O	45%	45%	▼ -0.6%
7.a4	42%	38%	▼ -4.3%
7.dxc5	3%	4%	▲ +1.0%
7.Bd3	2%	3%	+0.4%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 5 parties
Kramnik, Vladimir — 4 parties
Gukesh D — 3 parties
Ju, Wenjun — 2 parties
Carlsen, Magnus — 2 parties
Ding, Liren — 2 parties
Tal, Mikhail — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

7.O-O — 42.4% (1037 parties)

1950 — Giustolisi, Alberto vs Shainswit, George — 0-1 — Dubrovnik olm
1951 — Tipary, Lajos vs Borloy, Karoly — 1/2-1/2 — HUN-ch
1953 — Ojanen, Kaarle S vs Pilnik, Herman — 1/2-1/2 — Mar del Plata ARG
1953 — Steiner, Lajos vs Goldstein, Maurice Edwards — 1-0 — Hobart
1954 — Idigoras Guisasola, Gregorio vs Martin Martinez, Pedro Jose — 0-1 — Buenos Aires ARG

7.a4 — 41.8% (1022 parties)

1952 — Pytlakowski, Andrzej vs Gawlikowski, Stanislaw — 1-0 — Miedzyzdroje
1955 — Petrosian, Tigran V. vs Bisguier, Arthur B — 1/2-1/2 — Goteborg izt
1956 — Mutina, Antonin vs Skacel, Jan — 0-1 — Bratislava SVK
1958 — Blackstone, John vs Gross, Benjamin — 0-1 — Barbera Santa CA
1959 — Kupka, Slavoj vs Brach, Julius — 1-0 — Bratislava SVK

7.dxc5 — 3.9% (95 parties)

1958 — Ramirez, Hernan vs Martin Martinez, Pedro Jose — 1/2-1/2 — Pereira
1966 — Nei, Iivo vs Bronstein, David I — 0-1 — Tbilisi ch-URS
1970 — Donner, Jan-Hein vs Spassky, Boris V. — 0-1 — Amsterdam NED
1971 — Wade, Robert G vs Myagmarsuren, Lkhamsuren — 0-1 — Tallinn EST
1975 — Hort, Vlastimil vs Bronstein, David I — 1/2-1/2 — Teesside ENG

7.Bd3 — 3.6% (87 parties)

1964 — Stahlberg, Gideon vs Darga, Klaus — 1/2-1/2 — Havana CUB
1967 — Grigorian, Levon vs Bokuchava, Alexander — 0-1 — ?
1989 — Gavrikov, Viktor vs Horvath, Jozsef — 1/2-1/2 — Budapest HUN
1989 — Gavrikov, Alexander vs Horvath, Jan — 1/2-1/2 — Budapest NIC89-06 b
1990 — Jussupow, Artur vs Ribli, Zoltan — 1-0 — Munich GER

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