A38q — English: Symmetrical, Main Line, 7.d3 d6 8.a3

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.a3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur les cases fortes e4, f4, b5, d5 et g5 et la paire de fous.

Côté adverse. Les fous enfermés en g7 et c8.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1).

Plans. Bg5 (Clouer Nf6) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur les cases fortes d4, g4, e5 et f5, un avant-poste en d4 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et g2.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...Bg4 (Développer Bc8, clouer Nf3) ; ...d5 (Rupture) ; ...e6 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→a3, e2→d3, f2→g3, h2→g3, d3→c4	● d6→c5, e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● f4 (2v0), ● b5 (2v0), ● d5 (2v1), ● g5 (2v0)	● d4 (2v1), ● g4 (2v0), ● e5 (2v1), ● f5 (2v0)
Cases faibles	—	—
Centre	● d5 (2v1), ● e4 (2v1)	● d4 (2v1), ● e5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Enfermé (mob. 2)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	2 (c8, a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d3-d4, ● e2-e3	● …d6-d5, ● …e7-e6, ● …e7-e5

Partie
1939 Bad Elster – Round 7 – Lokvenc, Josef – 1-0 – Puechl, W. – G20 1. Nf3 Nf6 2. c4 c5 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. O-O d6 7. Nc3 O-O 8. a3 Bd7 9. h3 Qc8 10. Kh2 h6
1954 Mar del Plata ARG – Round 11 – Rossetto, Hector – 1-0 – Castillo Larenas, Mariano – G8 1. c4 c5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 g6 5. Nf3 Bg7 6. O-O O-O 7. d3 d6 8. a3 Bd7 9. Rb1 Qc8 10. Re1 Bh3
1955 Hungary Ch – Round 1 – Benko, Pal – 1/2-1/2 – Szabo, Ladislav – G6 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 c5 5. d3 Nc6 6. Nf3 O-O 7. O-O d6 8. a3 Bd7 9. Rb1 Ne8 10. Bd2 a5
1956 Moscow olm prel – Round 1 – Benko, Pal – 1/2-1/2 – Reifircz I – G30 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d6 6. c4 c5 7. Nc3 Nc6 8. a3 h6 9. Rb1 a5 10. Ne1 Be6
1957 HUN Ch Budapest HUN – Round ? – Benko, Pal – 1-0 – Bilek, Istvan – G46 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d6 6. c4 c5 7. Nc3 Nc6 8. a3 Bd7 9. Rb1 Ne8 10. Bd2 a5
1960 Balatonfured – Round 5 – Lengyel, Levente – 1/2-1/2 – Bilek, Istvan – G12 1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 c5 7. d3 Nc6 8. a3 Bd7 9. Rb1 a5 10. Ne1 Rb8
1962 Stockholm Interzonal – Round 3 – Benko, Pal – 1/2-1/2 – Pomar Salamanca, Arturo – G28 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c5 6. Nc3 Nc6 7. d3 d6 8. a3 Bd7 9. Rb1 a5 10. Bd2 e6
1963 IBM – Round 5 – Portisch, Lajos – 1/2-1/2 – Udovcic, Mijo – G20 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 c5 7. d3 Nc6 8. a3 Bg4 9. Rb1 Qd7 10. b4 Bh3
1964 BRA Ch – Round 1 – Farias, Sergio A. B. Lopes de – 0-1 – Rocha, Antonio – G4 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 c5 5. Bg2 O-O 6. O-O Nc6 7. d3 d6 8. a3 e6 9. Rb1 Bd7 10. Bf4 Qe7
1964 Rubinstein Memorial – Round 1 – Doda, Zbigniew – 1/2-1/2 – Parma, Bruno – G6 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c4 Bg7 5. Nc3 Nf6 6. O-O O-O 7. a3 d6 8. d3 Bd7 9. Bd2 Ne8 10. Rb1 a5
1964 Rubinstein Memorial – Round 1 – Filipowicz, Adam – 1/2-1/2 – Schmidt, Waldemar – G1 1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. Nf3 Nf6 6. O-O O-O 7. a3 d6 8. d3 Bd7 9. Rb1 a5 10. Bd2 Rb8
1965 Novi Sad – Round 18 – Bertok, Mario Jr. – 1/2-1/2 – Ankerst, Marjan – G144 1. c4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d3 d6 8. a3 Bd7 9. Rb1 a5 10. Ne1 Ne8
1966 Den Haag zt – Round 1 – Tringov, Georgi P – 1/2-1/2 – Garcia Aruca, Francisco Fernando – G17 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d6 6. c4 c5 7. Nc3 Nc6 8. a3 Bd7 9. Rb1 a5 10. Bd2 Qc8
1967 Moscow – Round 1 – Bilek, Istvan – 1/2-1/2 – Gligorić, Svetozar – G141 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c5 6. Nc3 Nc6 7. d3 d6 8. a3 Bd7 9. Rb1 a5 10. Bd2 Rb8
Masters 2000 – Round 3 – Bareev, Evgeny – 1-0 – Topalov, Veselin – G9 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. a3 d6 6. Nf3 Nf6 7. O-O O-O 8. d3 Bd7 9. Rb1 Rb8 10. b4 b6
World Blitz 2022 – Round 4.57 – Makarian, Rudik – 0-1 – Gelfand, Boris – G219 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c4 Bg7 5. Nc3 d6 6. d3 Nf6 7. O-O O-O 8. a3 b6 9. Rb1 Bb7 10. b4 Qd7
World Cup 1989 – Round 14 – Andersson, Ulf 1949 – 1/2-1/2 – Korchnoi, Viktor – G80 1. Nf3 c5 2. c4 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nc3 d6 6. d3 Nf6 7. O-O O-O 8. a3 Bg4 9. h3 Bd7 10. Rb1 Nd4

A38q —

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.a3

Eval: [+0.02]

Les coups candidats

8…a6 — 26.1% (365 parties) →

Ambassadeurs : Stevic, Hrvoje (5x), Parente, Massimo (3x), Svensson, Tim (2x), Petovar, T. (2x), Krause, Manfred (2x), Kohlschmidt, Christian (2x), Djukic, Zeljko (2x), Szell, Lajos (2x)

8…Bd7 — 24.0% (336 parties)

Ambassadeurs : Bilek, Istvan (4x), Benko, Pal (3x), Barczay, Laszlo (2x), Szieberth, Adam (2x), Aguilar, Luis Miguel (2x), Castillo Fernandez, Carles (2x), Herzog, Franz (1x), Kotek, Josef (1x)

8…Rb8 — 15.2% (212 parties)

Ambassadeurs : Fahrner, Kurt (2x), Lazzarini Decio (1x), Trois, Francisco R.T. (1x), Urseanu, Veniamin (1x), Ciocaltea, Victor (1x), de Wall, Robert (1x), Campelli, Cris (1x), Radziejewski, Dariusz (1x)

8…Bg4 — 8.4% (118 parties)

Ambassadeurs : Dornieden, Manfred, Dr. (1x), Degenhardt, Norbert (1x), Portisch, Lajos (1x), Udovcic, Mijo (1x), Karlsson, Lars 1937 (1x), Johansson, Jan 1964 (1x), Brito, Luismar (1x), Segal, Alexandru Sorin (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…a6	8…Bd7	8…Rb8	8…Bg4
<1800	94	18%	29%	15%	12%
1800-2200	572	22%	24%	17%	11%
2200-2600	422	33%	22%	14%	5%
2600+	12	42%	17%	17%	8%

Évolution par décennie (% des parties)

Décennie	N parties	8…a6	8…Bd7	8…Rb8	8…Bg4
1920s	1	—	100%	—	—
1930s	1	—	100%	—	—
1950s	10	10%	60%	10%	—
1960s	23	30%	39%	4%	9%
1970s	36	33%	17%	8%	6%
1980s	53	26%	23%	15%	9%
1990s	238	24%	27%	14%	12%
2000s	378	26%	25%	18%	8%
2010s	549	24%	24%	15%	8%
2020s	109	36%	9%	14%	6%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…a6	24%	36%	▲ +11.4%
8…Bd7	24%	9%	▼ -15.2%
8…Rb8	15%	14%	▼ -1.4%
8…Bg4	8%	6%	▼ -2.9%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 1 partie
Ju, Wenjun — 1 partie
Hou, Yifan — 1 partie

Parties historiques

8…a6 — 26.1% (365 parties)

1957 — Petrosian, Tigran A. vs Nezhmetdinov, Rashid — 1/2-1/2 — Kiev UKR
1963 — Gojak, Ilija vs Mestrovic, Zvonimir — 1/2-1/2 — Zenica BIH
1963 — Friehoff, Heinz vs Veeck Kurt — 1/2-1/2 — Helmbrechts GER
1965 — Bertok, Mario Jr. vs Matulovic, M. — 1/2-1/2 — Titograd
1967 — Kushnir, Alla vs Nedeljkovic, Verica — 1/2-1/2 — Budva MNE

8…Bd7 — 24.0% (336 parties)

1925 — Herzog, Franz vs Kotek, Josef — 1-0 — Braunau
1939 — Lokvenc, Josef vs Puechl, W. — 1-0 — Bad Elster
1954 — Rossetto, Hector vs Castillo Larenas, Mariano — 1-0 — Mar del Plata ARG
1955 — Benko, Pal vs Szabo, Ladislav — 1/2-1/2 — Budapest HUN
1956 — Mutina, Antonin vs Ivanco, Imrich — 1/2-1/2 — Bratislava SVK

8…Rb8 — 15.2% (212 parties)

1957 — Urseanu, Veniamin vs Ciocaltea, Victor — 0-1 — Ploiesti
1964 — Lazzarini Decio vs Trois, Francisco R.T. — 1-0 — Sao Paulo BRA
1970 — Ivkov, Borislav vs Gligoric, Svetozar — 1/2-1/2 — Porec CRO
1971 — Benko, Pal vs Janosevic, Dragoljub — 1/2-1/2 — Netanya ISR
1979 — Radziejewski, Dariusz vs Borghi, Humberto — 1-0 — EU-ch U20 Groningen NED

8…Bg4 — 8.4% (118 parties)

1963 — Portisch, Lajos vs Udovcic, Mijo — 1/2-1/2 — Amsterdam NED
1969 — Dornieden, Manfred, Dr. vs Degenhardt, Norbert — 0-1 — FRG-ch Koenigsfeld GER
1974 — Brito, Luismar vs Segal, Alexandru Sorin — 0-1 — Rio de Janeiro BRA
1979 — Hoeie, Johannes vs Eilertsen, Wiggo H — 1-0 — Tromsoe
1981 — Kuznecov, Alex vs Johnson, Tyler J — 0-1 — West Vancouver

Fin du contenu

Aucune page supplémentaire à charger

Articles plus anciens →