Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● e2→d3, f2→g3, h2→g3, d3→c4	● d6→e5, g6→f5, c7→d6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● d5 (3v0)	● d4 (2v0)
Cases faibles	—	—
Centre	● d5 (3v0), ● e4 (3v1)	● 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. 2)
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	mobile
Ruptures	● c4-c5, ● d3-d4, ● e2-e4, ● f2-f4	● …d6-d5, ● …e5-e4, ● …f5-f4

A26f — English: Closed, 5.d3 d6 6.Rb1 f5

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1 f5 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. e3 (Solidifier le centre — 57 % des parties) ; b4 (Expansion aile dame — 18 % des parties) ; Bd2 (Fou actif (mobilité 5), Développer c1 — 9 % des parties) ; Nf3 (Développer g1 — 6 % des parties) ; e4 (Occuper le centre — 6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nf6 (Développer g8 — 74 % des parties) ; ...Be6 (Fou actif (mobilité 5), Développer c8 — 8 % des parties) ; ...Nge7 (Développer g8 — 5 % des parties) ; ...a6 (Préparer expansion aile dame — 5 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1959 Asztalos Memorial 2nd – Round 4 – Bilek, Istvan – 1/2-1/2 – Dely, Peter – G6 1. g3 e5 2. Bg2 Nc6 3. c4 g6 4. Nc3 Bg7 5. d3 d6 6. Rb1 f5 7. Bd2 Nf6 8. b4 O-O 9. b5 Nd4 10. e3 Ne6
1965 Hastings ch-BCF – Round 10 – Haygarth, Michael J – 1/2-1/2 – Cafferty, Bernard – G99 1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 Nc6 5. d3 d6 6. Rb1 f5 7. e3 Nge7 8. Nge2 O-O 9. f4 Be6 10. Nd5 Kh8
1966 URS Team Ch – Round ? – Nikolaevsky, Yuri V – 1/2-1/2 – Boleslavsky, Isaac – G5 1. c4 g6 2. Nc3 Bg7 3. g3 d6 4. Bg2 Nc6 5. d3 e5 6. Rb1 f5 7. b4 Nf6 8. b5 Nd4 9. Nf3 Ne6 10. O-O O-O
1968 Lugano ol (Men) – Round 1 – Evans, Larry M – 1/2-1/2 – Spassky, Boris Vasily – G6 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Rb1 f5 7. b4 Nf6 8. b5 Ne7 9. e4 O-O 10. Nge2 a6
1969 Praia da Rocha zt – Round 7 – Hartston, William R – 1/2-1/2 – Littleton, Michael F – G27 1. g3 g6 2. Bg2 Bg7 3. c4 e5 4. Nc3 Nc6 5. d3 d6 6. Rb1 f5 7. f4 Nf6 8. Nh3 O-O 9. O-O Kh8 10. b4 Ng4
1971 Hoogovens – Round 6 – Donner, Jan Hein – 1-0 – Cuijpers, Frans Andre – G6 1. c4 e5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. d3 Nc6 6. Rb1 f5 7. b4 Nf6 8. b5 Ne7 9. e4 O-O 10. Nge2 Nh5
1972 Skopje ol (Men) fin-A – Round 5 – Hug, Werner – 1/2-1/2 – Gheorghiu, Florin – G33 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Rb1 f5 7. e3 Be6 8. Nge2 Nge7 9. O-O O-O 10. b4 Qd7
1973 Leningrad Interzonal – Round 3 – Rukavina, Josip – 1/2-1/2 – Uhlmann, Wolfgang – G132 1. g3 e5 2. Bg2 Nc6 3. c4 g6 4. Nc3 Bg7 5. d3 d6 6. Rb1 f5 7. e3 Nf6 8. Nge2 O-O 9. O-O Be6 10. Nd5 Qd7

A26f — Closed (1959)

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1 f5

Les coups candidats

7.e3 — 57.3% (177 parties)

Ambassadeurs : Cafferty, Bernard (2x), Polgar, Susan (2x), Bischoff, Klaus (2x), Hansen, Curt (2x), Bastian, Herbert (2x), Andersson, Ulf (2x), Ledger, Andrew J (2x), Schlemermeyer, Wilhelm (2x)

7.b4 — 21.7% (67 parties)

Ambassadeurs : Manouck, Thierry (2x), Savon, Vladimir (2x), Vescovi, Giovanni (2x), Wegerer, Fred (2x), Evans, Larry (1x), Spassky, Boris Vasily (1x), Nikolaevsky, Yuri V (1x), Boleslavsky, Isaac (1x)

7.Nf3 — 10.0% (31 parties)

Ambassadeurs : Stoliar, Efim Samoilovich (1x), Khasin, Abram (1x), Eising, Johannes (1x), Vogel, Robert (1x), Lukasiewicz, Grzegorz (1x), Leko, Peter (1x), Rukavina, Josip (1x), Lengyel, Levente (1x)

7.e4 — 4.5% (14 parties)

Ambassadeurs : Parsons, Guy (1x), Schulien, Charles (1x), Etruk, Rein T (1x), Stein, Leonid (1x), Weyerstrass, Ronald (1x), Van Der Linde, Anika (1x), Doda, Zbigniew (1x), Gross, Stefan (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.e3	7.b4	7.Nf3	7.e4
<1800	8	38%	12%	25%	—
1800-2200	87	59%	21%	8%	6%
2200-2600	181	60%	23%	10%	3%
2600+	3	—	67%	33%	—

Évolution par décennie (% des parties)

Décennie	N parties	7.e3	7.b4	7.Nf3	7.e4
1950s	2	—	—	50%	—
1960s	8	38%	25%	—	—
1970s	17	53%	18%	6%	18%
1980s	41	68%	15%	5%	2%
1990s	72	60%	25%	11%	3%
2000s	82	59%	20%	13%	5%
2010s	72	51%	26%	8%	6%
2020s	15	60%	20%	13%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.e3	51%	60%	▲ +8.6%
7.b4	26%	20%	▼ -6.4%
7.Nf3	8%	13%	▲ +5.0%
7.e4	6%	0%	▼ -5.6%

Parties historiques

7.e3 — 57.3% (177 parties)

1965 — Haygarth, Michael J vs Cafferty, Bernard — 1/2-1/2 — Hastings ch-BCF
1969 — Moberly, R Walter L vs Escott, KL. — 1-0 — Rhyl chU21-GB
1969 — Skalkotas, Nikolaos vs Angantysson, Haukur — 0-1 — Dresden GER
1970 — Doda, Zbigniew vs Prochownik, Franciszek — 1-0 — Piotrkow ch POL
1972 — Robin vs Brodie, Hugh — 1/2-1/2 — Quebec CAN

7.b4 — 21.7% (67 parties)

1966 — Nikolaevsky, Yuri V vs Boleslavsky, Isaac — 1/2-1/2 — URS
1968 — Evans, Larry vs Spassky, Boris Vasily — 1/2-1/2 — Lugano SUI
1971 — Donner, Jan-Hein vs Cuijpers, Frans Andre — 1-0 — Wijk aan Zee NED
1976 — Marschner, Juergen vs Boog, Frithjof, Dr. — 1-0 — Germany North
1979 — Hanken, Jerome B vs Remlinger, Larry — 1/2-1/2 — USA

7.Nf3 — 10.0% (31 parties)

1957 — Stoliar, Efim Samoilovich vs Khasin, Abram — 1-0 — Moscow RUS
1971 — Rukavina, Josip vs Lengyel, Levente — 0-1 — Sarajevo Sarajevo BIH
1985 — Eising, Johannes vs Vogel, Robert — 1-0 — GER
1989 — Lukasiewicz, Grzegorz vs Leko, Peter — 1/2-1/2 — Kecskemet HUN
1992 — Becker, Marc vs Neurohr, Stephan — 0-1 — GER

7.e4 — 4.5% (14 parties)

1971 — Etruk, Rein T vs Stein, Leonid — 1/2-1/2 — Parnu Parnu EST
1971 — Doda, Zbigniew vs Gross, Stefan — 1-0 — Novy Smokovec SVK
1977 — Weyerstrass, Ronald vs Van Der Linde, Anika — 1/2-1/2 — Velp op ch-NLD
1988 — Parsons, Guy vs Schulien, Charles — 0-1 — Nashville, TN USA
1992 — Kaspi, Alexander vs Shrentzel, Mordechai — 1/2-1/2 — Ramat Hasharon