E67e — King’s Indian: Fianchetto, Classical, 8.d5

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.d5 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte b5….

Atouts. Les Blancs s'appuient sur les cases fortes b5 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

Plan principal. Exploiter la case forte c5.

Atouts. Les Noirs s'appuient sur la case forte c5, un avant-poste en c5 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. ...c6 (Rupture) ; ...c5 (Rupture) ; ...e4 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3, c4→d5	● d6→e5, c7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● g5 (2v0)	● c5 (2v0)
Cases faibles	—	● d5
Centre	● d4 (2v1), ● d5 (3v1)	● 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. 0)
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	fermé
Ruptures	● c4-c5, ● e2-e3	● …c7-c6, ● …c7-c5, ● …e5-e4

Partie
1923 Karlsbad – Round 1 – Gruenfeld, Ernst – 1/2-1/2 – Yates, Frederic D – G49 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. d5 d6 5. Nc3 O-O 6. g3 e5 7. Bg2 Nbd7 8. O-O a5 9. Ne1 Nc5 10. e4 Ne8
1930 Liege – Round 3 – Weenink, Henri – 1-0 – Marshall Viele, Fabrizio Aaron – G13 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Nf3 e5 5. d5 g6 6. g3 Bg7 7. Bg2 O-O 8. O-O Nb6 9. Nd2 a5 10. b3 Bf5
1931 Praag olm – Round 9 – Flohr, Salo – 0-1 – Bogoljubow, Efim – G44 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nc3 Nbd7 7. O-O e5 8. d5 Nb6 9. b3 Bd7 10. h3 Nh5
1935 Tatatovaros it – Round 7 – Szigeti, Miklos – 0-1 – Steiner, Endre – G7 1. Nf3 Nf6 2. c4 g6 3. d4 d6 4. Nc3 Nbd7 5. g3 Bg7 6. Bg2 O-O 7. O-O e5 8. d5 Qe7 9. Qc2 a5 10. e4 Nc5
1939 Buenos Aires ol prel-A – Round 3 – Pinzon Solis, Felipe – 0-1 – Najdorf, Miguel – G13 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Nf3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. d5 a5 9. e4 Nc5 10. Bg5 h6
1942 Mar del Plata – Round 6 – Canepa, Jose – 0-1 – Najdorf, Miguel – G52 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nbd7 7. Nc3 e5 8. d5 a5 9. e4 Nc5 10. Ne1 Ne8
1946 JUG Ch – Round 6 – Markovic, Miroslav – 1-0 – Milic, Borislav – G22 1. d4 Nf6 2. Nf3 d6 3. g3 g6 4. Bg2 Bg7 5. c4 O-O 6. Nc3 Nbd7 7. O-O e5 8. d5 a5 9. e4 Nc5 10. Ne1 Nfd7
1946 Moscow-Prague tt – Round 11 – Kottnauer, Cenek – 0-1 – Bronstein, David I – G9 1. Nf3 Nf6 2. c4 d6 3. g3 g6 4. Bg2 Bg7 5. O-O Nbd7 6. d4 e5 7. Nc3 O-O 8. d5 a5 9. e4 Nc5 10. Ne1 Nfd7
1948 Moskou ch-URS – Round 16 – Kotov Lundqvist, Alex – 0-1 – Konstantinopolsky, Alexander – G133 1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Nbd7 7. Nc3 e5 8. d5 a5 9. e4 Nc5 10. Ne1 Kh8
1949 Baarn – Round 7 – De Lange, Daan – 0-1 – Henneberke, Frans – G23 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 d6 5. Bg2 O-O 6. Nf3 Nbd7 7. O-O e5 8. d5 a5 9. Ne1 Nc5 10. Nd3 Ne8
1950 CSR-BUL Prague CZE – Round 1 – Ivanov, Dimitar – 1/2-1/2 – Zita, Frantisek – G4 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. d5 a5 9. e4 Nc5 10. Ne1 Ne8
1951 Oxford – Round 2 – Fairhurst, William – 1-0 – Wade, Robert G – G3 1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. Nc3 Bg7 5. g3 O-O 6. Bg2 Nbd7 7. O-O e5 8. d5 Nc5 9. Nd2 a5 10. Nb3 Nxb3
1952 Havana – Round 11 – Ortega, Rogelio – 1/2-1/2 – Eliskases, Erich – G97 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. c4 d6 6. O-O Nbd7 7. Nc3 e5 8. d5 a5 9. e4 Nc5 10. Qc2 Nh5
1952 Moscow Ch – Round 14 – Kotov Lundqvist, Alex – 1/2-1/2 – Glotov, Vitaly – G73 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 g6 6. Bg2 Bg7 7. O-O O-O 8. d5 a5 9. Ne1 Nc5 10. Nd3 Nxd3
1953 Wch U20 qual – Round 2 – Petri, Bernd – 0-1 – Farre Mallofre, Miguel – G5 1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nbd7 7. Nc3 e5 8. d5 a5 9. Kh1 Ne8 10. e4 Nc5
1955 Erfurt – Round 1 – Franz, Joachim – 1/2-1/2 – Dworzynski, Roman – G17 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nbd7 7. Nc3 e5 8. d5 a5 9. Ne1 Nc5 10. Nd3 Nfd7
1957 Stevenson Memorial 5th – Round 4 – Mackay, Donald G – 1-0 – Durao, Joaquim – G8 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. O-O O-O 6. Nc3 e5 7. d4 Nbd7 8. d5 Ne8 9. e4 f5 10. Ne1 c5
1961 Katowice ch18-POL – Round 7 – Balcerowski, Witold – 0-1 – Bednarski, Jacek – G48 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 Nbd7 7. O-O e5 8. d5 a5 9. Ne1 Nc5 10. Nd3 Nxd3
1966 La Habana olm fin-C – Round 4 – Naranja, Renato – 1-0 – Yepez, Olavo – G20 1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nbd7 7. Nc3 e5 8. d5 a5 9. e4 Nc5 10. Ne1 c6
1966 La Habana olm prel – Round 2 – Kerr, Brian – 1/2-1/2 – Hartston, William R – G51 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 g6 6. Bg2 Bg7 7. O-O O-O 8. d5 h6 9. e4 Ne8 10. Qc2 f5
1966 Sunderland ch-BCF – Round 1 – Hempson, Peter W – 0-1 – Penrose, Justin – G11 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. d5 Ne8 9. e4 h6 10. Be3 f5
1967 ITA-ch28 Savona – Round 2 – Romani, Elio – 1/2-1/2 – Bacchelli, Renato – G4 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nbd7 7. Nc3 e5 8. d5 a5 9. e4 Nc5 10. Qc2 Ne8
1969 Netanya – Round 2 – Yanofsky, Daniel Abraham – 1/2-1/2 – Kavalek, Lubomir – G14 1. c4 g6 2. Nf3 Bg7 3. d4 Nf6 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. d5 Nc5 9. b4 Nce4 10. Nxe4 Nxe4
1969 YUG Ch 24th – Round 19 – Puc, Stojan – 1/2-1/2 – Bukic, Enver – G71 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. c4 d6 6. O-O Nbd7 7. Nc3 e5 8. d5 a5 9. Ne1 Nc5 10. Nd3 Nfd7

E67e — Fianchetto Classical

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.d5

Les coups candidats

8…a5 — 64.7% (510 parties)

Ambassadeurs : Marodi, Matyas (7x), Kotov Lundqvist, Alex (3x), Najdorf, Miguel (3x), Markovic, Miroslav (3x), Mundet Riera, Jaume (3x), Pilarte Castro, Rene Ozmar (3x), Gudmundsson, Jon Jorundur (2x), De Groot, Adriaan (2x)

8…Ne8 — 8.4% (66 parties)

Ambassadeurs : Gramlich, Sebastian (2x), Kobak, Jakub (2x), Hempson, Peter W (1x), Penrose, Justin (1x), Mackay, Donald G (1x), Durao, Joaquim (1x), Makinen, Ilkka (1x), Miles, Richard J (1x)

8…h6 — 6.2% (49 parties)

Ambassadeurs : Kerr, Brian (1x), Hartston, William R (1x), Mills, Robert (1x), Vuille, Charles (1x), Gratias, Sabine (1x), Nuenchert, Eveline (1x), Estavillo, Ederwin (1x), Najdorf, Miguel (1x)

8…Nc5 — 5.7% (45 parties)

Ambassadeurs : Yanofsky, Daniel Abraham (1x), Kavalek, Lubomir (1x), Fairhurst, William (1x), Wade, Robert G (1x), Radovici, Corvin (1x), Vaisman, Volodia (1x), Poulin, Claude (1x), Pineault, Denis (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…a5	8…Ne8	8…h6	8…Nc5
<1800	48	69%	8%	4%	4%
1800-2200	354	65%	9%	6%	6%
2200-2600	155	71%	6%	8%	6%
2600+	1	—	—	100%	—

Évolution par décennie (% des parties)

Décennie	N parties	8…a5	8…Ne8	8…h6	8…Nc5
1920s	1	100%	—	—	—
1930s	8	62%	—	—	—
1940s	8	100%	—	—	—
1950s	10	80%	10%	—	10%
1960s	22	55%	5%	9%	9%
1970s	25	68%	16%	4%	4%
1980s	32	62%	6%	6%	3%
1990s	180	52%	12%	11%	5%
2000s	202	65%	8%	7%	6%
2010s	271	71%	7%	4%	6%
2020s	29	76%	3%	—	10%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…a5	71%	76%	▲ +5.0%
8…Ne8	7%	3%	▼ -3.6%
8…h6	4%	0%	▼ -3.7%
8…Nc5	6%	10%	▲ +4.4%

Parties historiques

8…a5 — 64.7% (510 parties)

1923 — Gruenfeld, Ernst vs Yates, Frederic D — 1/2-1/2 — Carlsbad CZE
1936 — Gilg, Alfred, Dr. vs Pelikan, Anna — 1-0 — ?
1936 — Gilg, Karl vs Pelikan, Jorge — 1-0 — Liberec
1939 — Pinzon Solis, Felipe vs Najdorf, Miguel — 0-1 — Buenos Aires ol pr-A
1939 — Gudmundsson, Jon Jorundur vs De Groot, Adriaan — 0-1 — olm Buenos Aires

8…Ne8 — 8.4% (66 parties)

1957 — Mackay, Donald G vs Durao, Joaquim — 1-0 — Bognor Regis
1966 — Hempson, Peter W vs Penrose, Justin — 0-1 — Sunderland ch-BCF
1971 — Ocampo Vargas, Raul vs Panno, Oscar — 0-1 — Villa Gesell ARG
1973 — Padilla, Jorge vs Torre, Eugenio — 1/2-1/2 — Caracas VEN
1974 — Makinen, Ilkka vs Miles, Richard J — 1-0 — Teesside ENG

8…h6 — 6.2% (49 parties)

1966 — Kerr, Brian vs Hartston, William R — 1/2-1/2 — Havana CUB
1968 — Mills, Robert vs Vuille, Charles — 1-0 — US Open
1977 — Gratias, Sabine vs Nuenchert, Eveline — 1-0 — Frankfurt/Oder
1984 — Estavillo, Ederwin vs Najdorf, Miguel — 0-1 — Mar del Plata ARG
1989 — Leiber, Bernard vs Maeser, Fabian — 0-1 — Lugano op Lugano SUI

8…Nc5 — 5.7% (45 parties)

1951 — Fairhurst, William vs Wade, Robert G — 1-0 — Oxford ENG
1963 — Radovici, Corvin vs Vaisman, Volodia — 1/2-1/2 — Bucharest ROU
1969 — Yanofsky, Daniel Abraham vs Kavalek, Lubomir — 1/2-1/2 — Netanya ISR
1978 — Poulin, Claude vs Pineault, Denis — 0-1 — Quebec CAN
1988 — Stelzer, Harald vs Werner, Clemens — 0-1 — GER

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