E18o — Queen’s Indian: 7.Nc3 Ne4 8.Bd2 f5

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Bd2 f5 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte f4, case forte b5, case forte e5, Bd2 actif, paire de fous.
Problèmes : Bg2 enfermé.
Plans :
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte e4, case forte f5, Bb7 actif, Be7 actif, paire de fous.
Faiblesses adverses : Bg2 enfermé.
Plans :
● ...Nc6 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...c5 — Rupture
● ...d6 — Rupture
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E18o —

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Bd2 f5

Eval: [+0.22]

Les coups candidats

9.d5 — 39.5% (632 parties) →

Ambassadeurs : Tiviakov, Sergei (6x), Levitt, Jonathan P (5x), De Blois Figueredo, Adria (5x), Pribyl, Josef (5x), Ihlebak, Roar (4x), Adams, Michael (4x), Grunberg, Mihai-Lucian (4x), Stahlberg, Gideon (3x)

9.Qc2 — 25.6% (409 parties)

Ambassadeurs : Malakhatko, Vadim (8x), Matnadze Bujiashvili, Ann (7x), Kononenko, Tatiana (4x), Naumkin, Igor (4x), Banikas, Hristos (4x), Brodsky, Michail (3x), Medvegy, Zoltan Dr. (3x), Lohmann, Heinrich (3x)

9.Ne5 — 14.9% (238 parties)

Ambassadeurs : Gromotka, Harry (4x), Naumkin, Igor (4x), Moskvichev, Valery Ivanovich (3x), Juárez de Vena, Antonio (3x), Oparin, Grigoriy (3x), Salzmann, Stefan (3x), Krutov, Aleksandr Pavlovich (3x), Borisovs, Leonids (2x)

9.Rc1 — 14.3% (229 parties)

Ambassadeurs : Lalic, Bogdan (4x), Kuempers, Ulrich (3x), Wojtkiewicz, Aleksander (2x), Inkiov, Ventzislav (2x), Chmelik, Jiri (2x), Grunberg, Sergiu-Henric (2x), Zaja, Ivan (2x), Szmetan, Ricardo (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.d5	9.Qc2	9.Ne5	9.Rc1
<1800	14	21%	36%	—	14%
1800-2200	322	29%	24%	22%	19%
2200-2600	1060	41%	26%	14%	14%
2600+	54	26%	41%	22%	6%

Évolution par décennie (% des parties)

Décennie	N parties	9.d5	9.Qc2	9.Ne5	9.Rc1
1940s	6	100%	—	—	—
1950s	5	20%	40%	—	—
1960s	7	43%	14%	14%	—
1970s	19	79%	11%	—	—
1980s	89	71%	7%	1%	17%
1990s	285	62%	15%	0%	17%
2000s	473	43%	34%	2%	16%
2010s	548	24%	29%	27%	14%
2020s	167	17%	22%	48%	6%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.d5	24%	17%	▼ -6.7%
9.Qc2	29%	22%	▼ -7.3%
9.Ne5	27%	48%	▲ +21.3%
9.Rc1	14%	6%	▼ -8.4%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 3 parties
Karpov, Aleksandr — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

9.d5 — 39.5% (632 parties)

1944 — Pelikan, Jan vs Stahlberg, Gideon — 1-0 — Mar del Plata ARG
1944 — Pelikan, Jorge vs Stahlberg, Gideon — 1/2-1/2 — La Plata
1945 — Ader Hausman, Walter vs Maccioni, Alejandro — 1/2-1/2 — Vina del Mar CHI
1945 — Flores Alvarez, Rodrigo vs Cristia, Jose Maria — 0-1 — Vina del Mar CHI
1945 — Pelikán, Jiří vs Stahlberg, Gideon — 1-0 — Mar del Plata ARG

9.Qc2 — 25.6% (409 parties)

1953 — Stahlberg, Gideon vs Averbakh, Yuri L — 1-0 — Zurich SUI
1957 — Balanel, Ion vs Puc, Stojan — 1-0 — Ploiesti
1967 — Lundin, Erik vs Skold, Kristian — 1-0 — Stockholm SWE
1972 — Eising, Johannes vs Kraidman, Yair — 1/2-1/2 — Amsterdam NED
1975 — Konstantinov, Sergey vs Karpov, Anatoly — 1-0 — ?

9.Ne5 — 14.9% (238 parties)

1960 — Kvist, Goesta vs Olsson, Ake — 1/2-1/2 — Leningrad RUS
1988 — Robatsch, Karl vs Sharif, Mehrshad — 1/2-1/2 — Aosta
1996 — Gautason, B. vs Hunt, John — 0-1 — corr IECG 7PSRR
2002 — Turikov, Viktor vs Rosen, Willy — 1-0 — Dresden GER
2007 — Kopylov, Al2 vs Chenchik, Andrey — 1-0 — Salekhard RUS

9.Rc1 — 14.3% (229 parties)

1982 — Inkiov, Ventzislav vs Spassov, Liuben — 1/2-1/2 — Plovdiv BUL
1984 — Dejkalo, Stefan vs Zolnierowicz, Krzysztof — 1-0 — Poznan POL
1984 — Maksimovic, Branimir vs Cekro, Ekrem — 0-1 — Pula CRO
1985 — Sandrin Chodorge, Antoine vs Lief, Adam — 1-0 — Chicago, IL USA
1986 — Pikulik, Martin vs Feld, Petr — 0-1 — Brno CZE

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● e6→f5, a7→b6, c7→b6, d7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● b5 (2v0), ● e5 (2v0)	● e4 (2v1), ● f5 (2v0)
Cases faibles	—	● g5
Centre	● d4 (1v0), ● e5 (2v0)	● e4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bd2	● Bd2 Actif (mob. 6)
Bg2	● Bg2 Enfermé (mob. 2)
Bb7		● Bb7 Actif (mob. 4)
Be7		● Be7 Actif (mob. 7)
Paire de fous	● Oui	● Oui
Non développées	1 (a1)	2 (b8, a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c4-c5, ● d4-d5, ● e2-e3	● …c7-c6, ● …c7-c5, ● …d7-d6, ● …d7-d5, ● …e6-e5, ● …f5-f4

Partie
1951 YUG Ch 6th – Round 2 – Matanovic, Aleksandar – 1/2-1/2 – Majstorovic, Ljubomir – G10 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. d4 Be7 6. c4 O-O 7. Nc3 Ne4 8. Bd2 f5 9. Ne1 Nxc3 10. Bxc3 Bxg2
1953 Candidats Tournament – Round 27 – Stahlberg, Gideon – 1-0 – Averbakh, Yuri L – G175 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 Ne4 7. Bd2 f5 8. O-O O-O 9. Qc2 Nxc3 10. Bxc3 Be4
1954 Amsterdam olm – Round 1 – Dunkelblum, Arthur – 1/2-1/2 – Kupper, Josef – G156 1. Nf3 Nf6 2. d4 b6 3. g3 Bb7 4. c4 e6 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 f5 9. Ne1 Nxc3 10. Bxc3 Qc8
1966 Asztalos Memorial 9th – Round 8 – Bilek, Istvan – 1/2-1/2 – Bronstein, David I – G39 1. d4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. c4 O-O 7. Nc3 Ne4 8. Bd2 f5 9. Ne1 Bf6 10. Nxe4 fxe4
1967 Sweden (ch) – Round 7 – Lundin, Erik – 1-0 – Skold, Kristian – G33 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. c4 O-O 7. Nc3 Ne4 8. Bd2 f5 9. Qc2 Bf6 10. Rad1 Qc8
20. European Teams 2015 – Round 6.2 – Bacrot, Etienne – 1/2-1/2 – Korobov, Anton – G254 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 f5 9. Ne5 Nxc3 10. Bxc3 Bxg2
Amsterdam 1981 – Round 1 – Karpov, Anatoly – 1/2-1/2 – Polugaevsky, Lev – G7 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 f5 9. Qc2 Bf6 10. Rad1 Nxc3
Corus 2001 – Round 13 – Ivanchuk, Vasyl – 1-0 – Timman, Jan H – G87 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. d4 e6 5. Bg2 Be7 6. Nc3 O-O 7. O-O Ne4 8. Bd2 f5 9. Qc2 Bf6 10. Rad1 Na6
Corus A 2010 – Round 11 – Van Wely, Loek – 1-0 – Tiviakov, Sergei – G70 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. O-O Ne4 8. Bd2 f5 9. Qc2 Bf6 10. Rad1 Nxc3
GCT Rapid YourNextMove 2017 – Round 7.4 – Aronian, Levon – 1/2-1/2 – Ivanchuk, Vasyl – G34 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 f5 9. Qc2 Nxc3 10. Qxc3 Bf6
World Blitz 2007 – Round 31 – Ivanchuk, Vasyl – 0-1 – Adams, Michael – G306 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. O-O Ne4 8. Bd2 f5 9. Qc2 Bf6 10. Rad1 Nxc3
Yerevan ol (Men) 1996 – Round 4 – Korneevets, Alexander – 1/2-1/2 – Lastovicka, Jiri – G49 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 f5 9. Ne1 Bf6 10. e3 c5