Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● c4→d5, e4→d5	● d6→e5, c7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Be2	● Be2 Mauvais (mob. 2)
Bg5	● Bg5 Actif (mob. 7)
Bg7		● Bg7 Ok (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	2 (● a1, ● h1)	3 (● b8, ● c8, ● a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5	● …c7-c6

E92s — King’s Indian: Petrosian, Stein, 8.Bg5

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 a5 8.Bg5 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Bh4 (84 % des parties) ; Nd2 (10 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...h6 (Poser la question au Bg5 — 88 % des parties) ; ...Na6 (Développer b8 — 10 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

└── E92s - 8…h6 - Petrosian, Stein (1961) [+0.42] · 53 parties

├── E92t - 9.Bh4 Na6 - Petrosian, Stein (1968) [+0.40] · 44 parties

│ ├── E92u - 10.Nd2 - Main Line (1961) [+0.37] · 40 parties

│ │ ├── E92v - 10…Qe8 - Petrosian, Stein, Main Line (1967) [+0.46] · 29 parties

│ │ │ ├── E92w - 11.O-O - Petrosian, Stein, Main Line (1967) [+0.10] · 26 parties

│ │ │ │ ├── E92x - 11…Nh7 - Petrosian, Stein, Main Line (1968) [+0.22] · 13 parties

│ │ │ │ ├── E92w - 11…Bd7 - Petrosian, Stein, Main Line (1967) [+0.22] · 11 parties

│ │ │ │ └── E92w - 11…* - Petrosian, Stein, Main Line · 2 parties

│ │ │ └── E92v - 11.* - Petrosian, Stein, Main Line · 3 parties

│ │ └── E92u - 10…* - Petrosian, Stein, Main Line · 11 parties

│ └── E92t - 10.* - Petrosian, Stein · 4 parties

└── E92s - 9.* - Petrosian, Stein · 9 parties

Les parties, variante par variante

153 partiesE92s - 8…h6 - Petrosian, Stein (1961)

E92s — Petrosian, Stein

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 a5 8.Bg5

Les coups candidats

8…h6 — 81.3% (4999 parties) →

Ambassadeurs : Naumkin, Igor (69x), Laketic, Gojko (36x), Clares Huanca, Danner Saed (29x), Lugovoi, Aleksei (26x), Huss, Andreas (20x), Socko, Monika (18x), Roselli Mailhe, Bernardo (18x), Polak, Tomas (14x)

8…Na6 — 16.0% (983 parties)

Ambassadeurs : Naumkin, Igor (10x), Clares Huanca, Danner Saed (6x), Korotkjevich, Stanislav (4x), Sirletti, Sonia (4x), Narciso Dublan, Marc (4x), Rogers, Ian (3x), Lyrberg, Patrik (3x), Kiss, Pal (3x)

8…Qe8 — 1.5% (91 parties)

Ambassadeurs : Maggiolo, Sonia (1x), Gershnik, Anna (1x), Sanchez Repullo, Daniel (1x), Campos Alarcon, Rafael (1x), Thorsson, Olafur (1x), Bronstein, David I (1x), Sheldon, Ruth (1x), Mihevc-Mohr, Narcisa (1x)

8…Nbd7 — 1.1% (65 parties)

Ambassadeurs : Guimaraes, Wagner Peixoto (2x), Fiedler, Brian (2x), Sbarra, Marco (2x), Young, Christopher (2x), Sheldon, Ruth (1x), Noyce, Robert C (1x), Singer, Richard (1x), Januschke, Markus (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…h6	8…Na6	8…Qe8	8…Nbd7
<1800	211	81%	15%	0%	3%
1800-2200	2169	79%	18%	2%	2%
2200-2600	3225	82%	16%	2%	0%
2600+	68	87%	10%	1%	—

Évolution par décennie (% des parties)

Décennie	N parties	8…h6	8…Na6	8…Qe8	8…Nbd7
1960s	43	98%	2%	—	—
1970s	78	87%	13%	—	—
1980s	241	92%	8%	—	—
1990s	1649	84%	14%	1%	1%
2000s	1485	78%	19%	1%	1%
2010s	2083	80%	17%	2%	1%
2020s	568	81%	16%	1%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…h6	80%	81%	▲ +0.8%
8…Na6	17%	16%	▼ -0.9%
8…Qe8	2%	1%	-0.5%
8…Nbd7	1%	1%	▲ +0.6%

Joueurs célèbres

Champions du monde dans cette position

Kasparov, Garry — 10 parties
Kramnik, Vladimir — 10 parties
Tal, Mikhail — 1 partie
Ju, Wenjun — 1 partie
Karpov, Anatoly — 1 partie
Botvinnik, Mikhail — 1 partie
Ding, Liren — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

8…h6 — 81.3% (4999 parties)

1960 — Szabo, Laszlo vs Ciocaltea, Victor — 1-0 — Bucharest ROU
1960 — Benko, Pal vs Weinstein, Raymond — 0-1 — New York Metropolita
1961 — Rossetto, Hector vs Moyano, Marco — 1-0 — Balcarce
1961 — Petrosian, Tigran V. vs Lutikov, Anatoly S — 1-0 — Moskou
1961 — Schroeder, Ruperto vs Pilnik, Herman — 1/2-1/2 — Santiago de Chile

8…Na6 — 16.0% (983 parties)

1967 — Kholmov, Ratmir D vs Nikolaevsky, Yuri V — 0-1 — USSR
1970 — Ivkov, Borislav vs Tal, Mikhail — 0-1 — Herceg Novi MNE
1971 — Lerner, Konstantin Z vs Tseitlin, Mark D — 0-1 — Leningrad RUS
1972 — Sterngold, Susan vs Schmidt, Peter — 0-1 — USA ch wmn
1975 — Morrison, Graham vs Boyd, Chris — 1-0 — Carmarthen

8…Qe8 — 1.5% (91 parties)

1990 — Poellen, Peter vs Hansen, Ulrich Kjaer — 1-0 — ?
1991 — Maggiolo, Sonia vs Gershnik, Anna — 0-1 — Guarapuava BRA
1991 — Kanko, Ilkka vs Koskinen, Henri — 1/2-1/2 — Helsinki FIN
1993 — Szymczak, Zbigniew vs Wobbe, Sven — 1-0 — Hamburg GER
1993 — Hedman, Erik vs Jonsson, Mikael — 1-0 — SWE-chB Lindesberg

8…Nbd7 — 1.1% (65 parties)

1990 — Mallet, Lionel vs Strowski, Yannick — 1/2-1/2 — France
1994 — Schulz, Klaus Dieter vs Ragni, Marco, Dr. — 1-0 — Hockenheim GER
1994 — Fiedler, Brian vs Kalousek, Vladimir — 0-1 — Hradec Kralove CZE
1994 — Engels, Marco vs Schroder, Andreas — 1/2-1/2 — Porz GER
1994 — Titz, Heimo vs Raubal, Martin — 1-0 — AUT-ch Austria