A26d — English: Closed, 5.d3 d6 6.Rb1

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e4, case forte b5, case forte d5, Bg2 actif, paire de fous.
Faiblesses adverses : arriéré f7, Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, 3 pièces non développées (G1, C1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Nf3 — Développer Ng1
● Be3 — Développer Bc1

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte d4, case forte e5, case forte f5, avant-poste d4(C), paire de fous.
Faiblesses adverses : Bc1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, arriéré f7, 4 pièces non développées (G8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Nf6 — Développer Ng8
● ...Bf5 — Développer Bc8
● ...d5 — Rupture
● ...e4 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A26d — Closed

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1

Eval: [+0.22]

Les coups candidats

6…a5 — 43.9% (546 parties) →

Ambassadeurs : Snape, Ian L (8x), Andersson, Ulf (7x), Van Hoolandt, Patrick (5x), Shubin, Kirill (5x), Jussupow, Artur (4x), Reizniece, Dana (4x), Gallagher, Joseph G. (4x), Giardelli, Sergio C. (3x)

6…f5 — 22.4% (279 parties) →

Ambassadeurs : Todorcevic Antic, Miodrag (3x), Ledger, Andrew J (3x), Wegerer, Fred (3x), Evans, Larry (2x), Cafferty, Bernard (2x), Polgar, Susan (2x), Andersson, Ulf (2x), Kestler, Hans-Guenther (2x)

6…Be6 — 17.9% (223 parties)

Ambassadeurs : Weyerstrass, Ronald (3x), Zueger, Beat (3x), Larsen, Benjamin Holsko (2x), Ree, Hans (2x), Liberzon, Vladimir M (2x), Azmaiparashvili, Zurab (2x), Gufeld, Eduard (2x), Balashov, Yuri (2x)

6…Nf6 — 6.0% (75 parties)

Ambassadeurs : Jakobsen, Ole (2x), Gligorić, Svetozar (2x), Biyiasas, Peter (2x), Malpert, Rodney (2x), Gazik, Igor (2x), Schroeder, Jakob (2x), Held, Patrick (2x), Stepovaia, Tatiana (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…a5	6…f5	6…Be6	6…Nf6
<1800	10	40%	50%	—	—
1800-2200	304	45%	18%	17%	5%
2200-2600	729	45%	25%	17%	6%
2600+	24	58%	8%	17%	17%

Évolution par décennie (% des parties)

Décennie	N parties	6…a5	6…f5	6…Be6	6…Nf6
1950s	3	—	67%	—	—
1960s	37	24%	19%	19%	19%
1970s	76	30%	20%	34%	7%
1980s	131	29%	29%	24%	5%
1990s	279	44%	24%	18%	6%
2000s	365	50%	20%	18%	5%
2010s	285	45%	24%	15%	7%
2020s	68	66%	18%	4%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…a5	45%	66%	▲ +21.3%
6…f5	24%	18%	▼ -5.9%
6…Be6	15%	4%	▼ -10.3%
6…Nf6	7%	1%	▼ -5.5%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 2 parties
Karpov, Anatoly — 2 parties
Kasparov, Garry — 1 partie
Smyslov, Vladimir — 1 partie
Karpov, Aleksandr — 1 partie

Parties historiques

6…a5 — 43.9% (546 parties)

1961 — Botvinnik, Mikhail vs Gligorić, Svetozar — 1/2-1/2 — Oberhausen etc
1961 — Milic Dobos, Simun vs Gligoric, Sofija — 1/2-1/2 — Belgrade SRB
1962 — Najdorf, Miguel vs Milev, Zdravko — 1-0 — Havana CUB
1963 — Khanov, Kurban vs Khalilbeili, Sultan — 1-0 — URS-chT Moscow RUS
1965 — Sakharov, Yuri G. vs Kuzmin, Gennadiy — 1-0 — Tallinn ch-URS

6…f5 — 22.4% (279 parties)

1957 — Stolyar, E. vs Khasin, A. — 1-0 — Moskou ch-URS
1959 — Bilek, Istvan vs Dely, Peter — 1/2-1/2 — Balatonfured
1965 — Haygarth, Michael J vs Cafferty, Bernard — 1/2-1/2 — Hastings ch-BCF
1966 — Gasic, Bozidar vs Honfi, K. — 1/2-1/2 — Sarajevo BIH
1966 — Nikolaevsky, Yuri V vs Boleslavsky, Isaac — 1/2-1/2 — URS

6…Be6 — 17.9% (223 parties)

1961 — Barcza, Gedeon vs Taimanov, Mark — 1/2-1/2 — Budapest HUN
1962 — Petrosian, Tigran V. vs Aaron, Manuel — 1-0 — Stockholm SWE
1964 — Bukic, Enver vs Polugaevsky, Lev — 0-1 — 7. It Sarajevo BIH
1966 — Larsen, Benjamin Holsko vs Ree, Hans — 0-1 — Ter Apel NED
1968 — Botvinnik, Mikhail vs Liberzon, Vladimir M — 1/2-1/2 — USSR

6…Nf6 — 6.0% (75 parties)

1965 — Jakobsen, Ole vs Gligorić, Svetozar — 1/2-1/2 — Copenhagen DEN
1966 — Sloth, Jorn vs Jakobsen, Ole — 1/2-1/2 — Aarhus DEN
1968 — Barcza, Gedeon vs Matanovic, Aleksandar — 1-0 — Pecs
1968 — Van Baarle, John vs Tompa, Janos — 0-1 — Meldorf
1968 — Spassky, Boris V. vs Medina-Garcia, Antonio — 1-0 — Palma de Majorca ESP

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● f7
Chaînes	● e2→d3, f2→g3, h2→g3, d3→c4	● d6→e5, c7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (3v0), ● b5 (2v0), ● d5 (3v0)	● d4 (2v0), ● e5 (3v0), ● f5 (2v0)
Cases faibles	—	—
Centre	● d5 (3v0), ● e4 (3v0)	● d4 (2v0), ● e5 (3v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Actif (mob. 6)
Bg7		● Bg7 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (g1, c1, h1)	4 (g8, c8, a8, h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Au centre !
Droits de roque	O-O	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c4-c5, ● d3-d4, ● e2-e3, ● f2-f3	● …d6-d5, ● …e5-e4, ● …f7-f6, ● …f7-f5

Partie
1961 Maroczy Memorial – Round 1 – Barcza, Gedeon – 1/2-1/2 – Taimanov, Mark E – G39 1. g3 e5 2. c4 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. d3 d6 6. Rb1 Be6 7. Nh3 h6 8. f4 Qd7 9. Nf2 Nge7 10. Nd5 Nd8
1962 Stockholm Interzonal – Round 12 – Petrosian, Tigran V – 1-0 – Aaron, Manuel – G102 1. c4 e5 2. Nc3 Nc6 3. g3 d6 4. Bg2 g6 5. d3 Bg7 6. Rb1 Be6 7. b4 Qd7 8. Nf3 h6 9. Nd2 Nge7 10. Nd5 Nf5
1963 CSR Ch – Round 18 – Filip, Miroslav – 1-0 – Simek, Jakub – G161 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Rb1 Nge7 7. b4 O-O 8. e3 f5 9. Nge2 Be6 10. Nd5 a6
1964 7. It Sarajevo BIH – Round 2 – Bukic, Enver – 0-1 – Polugaevsky, Lev – G2 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Rb1 Be6 7. b4 Qd7 8. b5 Nd8 9. h4 h6 10. h5 g5
1965 Copenhagen – Round 3 – Jakobsen, Ole – 1/2-1/2 – Gligorić, Svetozar – G39 1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 d6 5. d3 Nc6 6. Rb1 Nf6 7. b4 O-O 8. e3 Bg4 9. Nge2 Qd7 10. b5 Nd8
1966 Aarhus – Round 5 – Sloth, Jorn – 1/2-1/2 – Jakobsen, Ole – G34 1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 Nc6 5. d3 d6 6. Rb1 Nf6 7. b4 O-O 8. e3 Bg4 9. Nge2 Qd7 10. h3 Be6
1967 Capablanca Memorial – Round 1 – O'Kelly, Albéric de Galway – 1/2-1/2 – Rossetto, Hector – G1 1. c4 Nc6 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. Rb1 e5 6. d3 Nge7 7. e4 O-O 8. Nge2 Be6 9. Nd5 Qd7 10. O-O f5
1968 CSR Ch – Round 18 – Hort, Vlastimil – 1-0 – Dolezal, Jiri – G157 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Rb1 Be6 7. b4 Qd7 8. b5 Nd8 9. Nf3 h6 10. O-O Nf6
1968 HUN-JUG – Round 1 – Barcza, Gedeon – 1-0 – Matanovic, Aleksandar – G1 1. c4 e5 2. g3 g6 3. Bg2 Bg7 4. Nc3 d6 5. d3 Nc6 6. Rb1 Nf6 7. b4 a6 8. a4 O-O 9. e3 Ne7 10. Nge2 d5
1968 Meldorf U26 – Round 2 – Van Baarle, John – 0-1 – Tompa, Janos – G7 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Rb1 Nf6 7. b4 O-O 8. b5 Ne7 9. e4 c6 10. Ba3 c5
1968 Palma de Mallorca – Round 9 – Spassky, Boris V. – 1-0 – Medina-Garcia, Antonio – G79 1. c4 g6 2. g3 Bg7 3. Bg2 e5 4. Nc3 d6 5. d3 Nc6 6. Rb1 Nf6 7. b4 a6 8. e3 O-O 9. Nge2 Be6 10. O-O Qd7
1968 USSR – Round 1 – Botvinnik, Mikhail – 1/2-1/2 – Liberzon, Vladimir M – G3 1. c4 e5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Rb1 Be6 7. b4 Qd7 8. b5 Nd8 9. a4 Ne7 10. Ba3 h6
1969 Praia da Rocha zt – Round 7 – Schumacher, Helmut – 1/2-1/2 – Schaufelberger, Heinz – G22 1. g3 e5 2. c4 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Rb1 d6 6. d3 Nf6 7. b4 O-O 8. b5 Ne7 9. e3 a6 10. a4 axb5
1970 Vinkovci – Round 8 – Quinteros, Miguel Angel – 1/2-1/2 – Taimanov, Mark – G117 1. g3 e5 2. Bg2 Nc6 3. c4 g6 4. Nc3 Bg7 5. d3 d6 6. Rb1 Bd7 7. b4 Qc8 8. e3 Nf6 9. Nf3 Bh3 10. O-O Bxg2
Buenos Aires 1980 – Round 1 – Giardelli, Sergio C. – 1/2-1/2 – Balashov, Yuri S – G3 1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 Nc6 5. d3 d6 6. Rb1 Be6 7. b4 Qd7 8. b5 Nd8 9. Bd2 Ne7 10. Nd5 O-O
Linares 1981 – Round 1 – Larsen, Bent – 0-1 – Spassky, Boris V. – G4 1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. d3 d6 6. Rb1 Be6 7. b4 Qd7 8. Nf3 h6 9. O-O Nge7 10. e4 Bg4
World Cup 1988 – Round 1 – Jussupow, Artur – 1/2-1/2 – Ehlvest, Jaan – G2 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Rb1 Be6 7. b4 Qd7 8. b5 Nd8 9. e3 Ne7 10. Nd5 Nc8

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