E18n — Queen’s Indian: 7.Nc3 Ne4 8.Bd2 d5

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 d5 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ 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.
Faiblesses adverses : arriéré c7.
Problèmes : Bg2 enfermé.
Plans :
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : Be7 actif, paire de fous.
Faiblesses adverses : Bg2 enfermé, pawn c4 en prise.
Problèmes : arriéré c7.
Plans :
● ...Nbd7 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...e5 — Rupture
● ...f6 — Rupture
● ...f5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E18n —

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 d5

Eval: [+0.19]

Les coups candidats

9.cxd5 — 84.9% (478 parties)

Ambassadeurs : Ilyasov, Anatoly Fedorovich (13x), Korobov, Anton (9x), Tomashevsky, Evgeny (8x), Farago, Ivan (6x), Ludevid i Massana, Joan (6x), Janisch, Manfred (6x), Susla, Vitaliy (5x), Esin, Maxim (5x)

9.Qc2 — 6.9% (39 parties)

Ambassadeurs : Kratochvíl, Václav (2x), Jarabinský, Martin (2x), Ilyasov, Anatoly Fedorovich (2x), Opocensky, Karel (1x), Saemisch, Friedrich (1x), Füster, Géza (1x), Potucek, Ludovit (1x), Tukmakov, Vladimir B (1x)

9.Ne5 — 6.2% (35 parties)

Ambassadeurs : Portisch, Lajos (2x), Korchnoi, Viktor (2x), Polugaevsky, Lev (2x), Gulko, Boris (1x), Schoeneberg, Manfred (1x), Antoshin, Vladimir S (1x), Furman, Slavomir (1x), Eliskases, Erich (1x)

9.Rc1 — 1.2% (7 parties)

Ambassadeurs : Opocensky, Karel (1x), Pirc, Vasja (1x), Aguiar Garcia, Juan (1x), Munoz Moreno, Francisco Javier (1x), Xiu, Deshun (1x), Kannappan Priyadharshan (1x), Kristensen, Elias Berg (1x), Pilgaard, Kim (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.cxd5	9.Qc2	9.Ne5	9.Rc1
<1800	3	100%	—	—	—
1800-2200	125	89%	5%	5%	1%
2200-2600	357	85%	8%	6%	1%
2600+	30	93%	—	7%	—

Évolution par décennie (% des parties)

Décennie	N parties	9.cxd5	9.Qc2	9.Ne5	9.Rc1
1940s	3	—	67%	—	33%
1950s	1	100%	—	—	—
1960s	7	29%	—	71%	—
1970s	33	85%	6%	9%	—
1980s	43	84%	2%	7%	2%
1990s	36	81%	8%	11%	—
2000s	52	79%	8%	8%	6%
2010s	279	89%	5%	5%	1%
2020s	109	85%	11%	3%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.cxd5	89%	85%	▼ -3.6%
9.Qc2	5%	11%	▲ +5.6%
9.Ne5	5%	3%	▼ -1.9%
9.Rc1	1%	0%	▼ -0.7%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 4 parties
Smyslov, Vladimir — 2 parties
Karpov, Anatoly — 2 parties
Euwe, Max — 1 partie

Parties historiques

9.cxd5 — 84.9% (478 parties)

1950 — Szabados, Eugenio vs Euwe, Max — 0-1 — Amsterdam NED
1966 — Tal, Mikhail vs Trifunovic, Petar — 1-0 — Palma de Majorca ESP
1966 — Meza Pomar, Aroa vs Spassky, B. — 1/2-1/2 — Havana olm
1970 — Votruba, Pavel vs Neckar, Lubomir — 1/2-1/2 — Harrachov
1971 — Uhlmann, Wolfgang vs Smyslov, Vladimir — 0-1 — Moscow RUS

9.Qc2 — 6.9% (39 parties)

1941 — Opocensky, Karel vs Saemisch, Friedrich — 0-1 — Trencianske Teplice SVK
1941 — Füster, Géza vs Potucek, Ludovit — 0-1 — Trencianske Teplice SVK
1970 — Krogius, Nikolai V vs Wade, Robert G — 1-0 — Hastings ENG
1972 — Tukmakov, Vladimir B vs Razuvaev, Yuri S — 1-0 — Baku ch-URS
1981 — Hvenekilde, Jorgen vs Fries-Nielsen, Niels Jorgen — 1/2-1/2 — Aarhus DEN

9.Ne5 — 6.2% (35 parties)

1960 — Portisch, Lajos vs Eliskases, Erich — 1-0 — Leipzig GER
1960 — Portisch, Lajos vs Szabo, Laszlo — 1-0 — Budapest HUN
1966 — Korchnoi, Viktor vs Kholmov, Ratmir D — 1/2-1/2 — Tbilisi ch-URS
1967 — Gulko, Boris vs Schoeneberg, Manfred — 1/2-1/2 — Harrachov
1969 — Antoshin, Vladimir S vs Furman, Slavomir — 1/2-1/2 — URS-chT Grozny

9.Rc1 — 1.2% (7 parties)

1948 — Opocensky, Karel vs Pirc, Vasja — 1/2-1/2 — Karlovy Vary
1982 — Aguiar Garcia, Juan vs Munoz Moreno, Francisco Javier — 0-1 — Malaga ESP
2002 — Kristensen, Elias Berg vs Pilgaard, Kim — 1/2-1/2 — Greve DEN
2004 — Xiu, Deshun vs Kannappan Priyadharshan — 1-0 — Calicut IND
2008 — Gavryushin, Oleg vs Syrchikov, Alexander — 0-1 — Perm RUS

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● c7
Chaînes	● f2→g3, h2→g3	● e6→d5, a7→b6, c7→b6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● b5 (2v0), ● e5 (2v0)	—
Cases faibles	—	● g5
Centre	● d4 (1v0), ● e5 (2v0)	● d5 (3v2)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bd2	● Bd2 Actif (mob. 6)
Bg2	● Bg2 Enfermé (mob. 2)
Bb7		● Bb7 Ok (mob. 3)
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	fermé
Ruptures	● c4-c5	● …e6-e5, ● …f7-f6, ● …f7-f5

Partie
1941 Trencianske Teplice – Round 6 – Opocensky, Karel – 0-1 – Saemisch, Friedrich – G22 1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 d5 9. Qc2 Nxd2 10. Nxd2 c6
1941 Trencianske Teplice – Round 7 – Füster, Géza – 0-1 – Potucek, Ludovit – G27 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 d5 9. Qc2 Nd7 10. Rfd1 Nxd2
1948 Karlovy Vary – Round 15 – Opocensky, Karel – 1/2-1/2 – Pirc, Vasja – G144 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 d5 9. Rc1 Nc6 10. cxd5 exd5
1960 HUN Ch playoff – Round 4 – Portisch, Lajos – 1-0 – Szabo, Laszlo – G3 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 d5 9. Ne5 Nxd2 10. Qxd2 c6
1960 Leipzig olm fin-A – Round 7 – Portisch, Lajos – 1-0 – Eliskases, Erich – G122 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 d5 9. Ne5 Nxc3 10. Bxc3 Nd7
1966 Tbilisi ch-URS – Round 4 – Korchnoi, Viktor – 1/2-1/2 – Kholmov, Ratmir D – G30 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 d5 9. Ne5 Nd7 10. Nxe4 dxe4
1967 Harrachov – Round 1 – Gulko, Boris – 1/2-1/2 – Schoeneberg, Manfred – G23 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 d5 9. Ne5 Nd7 10. cxd5 exd5
1969 URS Team Ch Grozny – Round 1 – Antoshin, Vladimir S – 1/2-1/2 – Furman, Slavomir – G4 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 d5 9. Ne5 Nxc3 10. Bxc3 Nd7
36. Olympiad 2004 – Round 7 – Fridman, Daniel – 1/2-1/2 – Korchnoi, Viktor – G234 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 d5 9. Ne5 Nxc3 10. Bxc3 Nd7
Tallinn 1973 – Round 1 – Andersson, Ulf 1949 – 1/2-1/2 – Polugaevsky, Lev – G7 1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. d4 Ne4 8. Bd2 d5 9. Ne5 Nd7 10. Bf4 Nxe5