Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● c4, ● c5	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	● aile dame 4v2	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● d5 (4v1)	● g4 (2v1)
Cases faibles	—	—
Centre	● d4 (1v0), ● d5 (4v1)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 2)
Bf1	● Bf1 Non développé (mob. 2)
Bg7		● Bg7 Ok (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	5 (● g1, ● c1, ● f1, ● a1, ● h1)	4 (● b8, ● 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	mobile
Ruptures	● c5-c6, ● e4-e5, ● f4-f5	● …d6-d5, ● …e7-e5

E76b — King’s Indian: Four Pawns Attack, Exchange

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 c5 6.dxc5 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Bd3 (Développer f1 — 76 % des parties) ; Bd2 (Développer c1 — 19 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Qa5 (Contrôle diagonale a5-e1, Prépare O-O-O — 97 % des parties) ; ...dxc5 (Capture en c5, Frapper le centre adverse — 3 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1953 Bucharest – Round 10 – Tolush, Alexander V – 1-0 – Radulescu, Mihai – G95 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd2 Qxc5 8. b4 Qc6 9. Bd3 O-O 10. Nf3 Be6
1954 FRG Ch qual West – Round 5 – Niephaus, Walter – 1-0 – Herrmann, Hans, Dr. – G11 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Nf3 Nc6 9. Qc2 O-O 10. Be3 Qh5
1954 Montevideo – Round 13 – Trompowsky, Octavio – 1-0 – Salas Romo, Julio – G99 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd2 Qxc5 8. Nf3 Be6 9. Qe2 O-O 10. Rc1 Bd7
1955 Erfurt – Round 6 – Dittmann, Sieghart – 1/2-1/2 – Bhaskar Jyoti Koch – G40 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Qe2 Bg4 9. Nf3 O-O 10. Be3 Qc8
1956 Moscow olm prel – Round 6 – Johannessen, Simon T – 1-0 – Shapiro, Greg – G174 1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Qe2 Nc6 9. Nf3 Ng4 10. Nd5 Nd4
1958 Portoroz Interzonal – Round 4 – Szabo, Laszlo – 1-0 – Sherwin, James T – G35 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Qe2 Nc6 9. Nf3 Bg4 10. Be3 Qa5
1958 WchT U26 fin-A 05th – Round 4 – Pacsay, Laszlo – 1-0 – Lukic, Arsenije – G35 1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Nf3 Nc6 9. Qe2 Bg4 10. Be3 Qh5
1960 Leipzig olm prel – Round 2 – Johannessen, Svein – 1-0 – Camilleri, Henry – G7 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Nxe4 8. Bxe4 Bxc3+ 9. bxc3 Qxc3+ 10. Bd2 Qxc4
1961 Bled – Round 7 – Olafsson, Fridrik – 1/2-1/2 – Bertok, Mario Jr. – G71 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Nf3 Nc6 9. Qe2 Bg4 10. Be3 Bxf3
1961 Marianske Lazne zt – Round 12 – Ljungquist, Lennart – 0-1 – Ghitescu, Theodor – G83 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd2 Qxc5 8. b4 Qb6 9. Nf3 Ng4 10. Qe2 Qxb4
1962 Olympiad Varna BUL – Round 1 – Johannessen, Simon T – 0-1 – Johansson Rexner, Melker – G7 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Nf3 Nc6 9. Qe2 Bg4 10. Be3 Qa5
1962 WT/M/945 – Round ? – Mekota – 1-0 – Tiemann, Christoph – G1 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Nf3 Nc6 9. Qe2 Bg4 10. Be3 Qa5
1963 Halle zt – Round 1 – Johannessen, Simon T – 1-0 – Kanko, Ilkka – G50 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Nf3 Nc6 9. Qe2 Bg4 10. Be3 Qa5
1963 Nt Helmbrechts GER – Round 11 – Delander, Adolf – 0-1 – Ellrich, Paul – G45 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Nf3 Nc6 9. Qe2 Bg4 10. Be3 Qh5
1966 Malaga – Round 1 – Saborido Carre, Rafael – 1-0 – Medina-Garcia, Antonio – G1 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 dxc5 8. e5 Ng4 9. Nf3 f6 10. O-O fxe5
1968 USA Open Aspen – Round 1 – Martz, William – 1/2-1/2 – Byrne, Ray – G5 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. dxc5 Qa5 7. Bd3 Nfd7 8. Bd2 Nxc5 9. Bc2 Nc6 10. Nd5 Qd8

E76b — Four Pawns Attack, Exchange (1953)

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 c5 6.dxc5

Les coups candidats

6…Qa5 — 92.0% (391 parties)

Ambassadeurs : Jianu, Vlad-Cristian (10x), Johannessen, Svein (6x), Zimmerman, Yuri (6x), Mellado Trivino, Juan (5x), Keres, Paul Petrovich (4x), Gretarsson, Helgi Ass (4x), Bak, Istvan (3x), Dittmann, Sieghart (3x)

6…dxc5 — 5.4% (23 parties)

Ambassadeurs : Bachtiar, Arovah (1x), Soler Gonzalez, Juan Fernando (1x), Soultanbeieff, Victor (1x), Franck, Alfons (1x), McMahon, Daire (1x), Cottrell, Xavier (1x), Macmahon, Seymour (1x), Cottrell III, Joe Marshall (1x)

6…O-O — 2.1% (9 parties)

Ambassadeurs : Cormier, Mike (1x), Cohen, David (1x), Walters, Gary L (1x), Spencer, Gary (1x), Arjun Bringi (1x), Eiersbrock, Marko (1x), Vecek, Marjan (1x), Koski, Pekka (1x)

6…Nc6 — 0.2% (1 parties)

Ambassadeurs : Williams, Jonathan D (1x), Cashon, John J (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…Qa5	6…dxc5	6…O-O	6…Nc6
<1800	35	74%	17%	3%	3%
1800-2200	137	91%	7%	2%	—
2200-2600	152	99%	1%	1%	—

Évolution par décennie (% des parties)

Décennie	N parties	6…Qa5	6…dxc5	6…O-O	6…Nc6
1950s	37	97%	3%	—	—
1960s	25	96%	4%	—	—
1970s	5	100%	—	—	—
1980s	13	92%	—	8%	—
1990s	90	96%	3%	1%	—
2000s	143	90%	8%	1%	1%
2010s	93	92%	4%	3%	—
2020s	19	74%	11%	16%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…Qa5	92%	74%	▼ -18.8%
6…dxc5	4%	11%	▲ +6.2%
6…O-O	3%	16%	▲ +12.6%
6…Nc6	0%	0%	+0.0%

Parties historiques

6…Qa5 — 92.0% (391 parties)

1952 — Geller, Efim P. vs Gligorić, Svetozar — 0-1 — Saltsjobaden SWE
1952 — Geller, Efim P. vs Gligoric, Svetozar — 0-1 — Saltsjobaden SWE
1953 — Keres, Paul Petrovich vs Bronstein, David I — 1/2-1/2 — Zurich SUI
1953 — Pafnutiff, Vladimir vs Currie, Robert — 1-0 — San Francisco, CA USA
1953 — Keres, Paul Petrovich vs Rubanovich V — 1-0 — Ch Estonia (open)

6…dxc5 — 5.4% (23 parties)

1958 — Soultanbeieff, Victor vs Franck, Alfons — 1-0 — Mechelen
1960 — Bachtiar, Arovah vs Soler Gonzalez, Juan Fernando — 1-0 — Leipzig olm prel
1993 — McMahon, Daire vs Cottrell, Xavier — 1-0 — Massy
1993 — Macmahon, Seymour vs Cottrell III, Joe Marshall — 1-0 — Massy
1998 — Eichler, Tim vs Bogas, Edgar — 1-0 — ?

6…O-O — 2.1% (9 parties)

1988 — Cormier, Mike vs Cohen, David — 1-0 — Hull CAN
1994 — Walters, Gary L vs Spencer, Gary — 1-0 — Detroit ch-MI opB
2001 — Arjun Bringi vs Eiersbrock, Marko — 1/2-1/2 — ?
2012 — Vecek, Marjan vs Koski, Pekka — 1-0 — ICCF
2013 — Jelen, Janusz vs Jakimczuk, Alicja — 1-0 — Ramsowo

6…Nc6 — 0.2% (1 parties)

2000 — Williams, Jonathan D vs Cashon, John J — 0-1 — IECC

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