E18i — Queen’s Indian: 7.Nc3 d5 8.Ne5 Nbd7

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 d5 8.Ne5 Nbd7 * ○ 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, Bg2 actif, paire de fous.
Faiblesses adverses : arriéré c7.
Problèmes : Bc1 enfermé.
Plans :
● Bg5 — Clouer Nf6

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : Be7 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé.
Problèmes : arriéré c7.

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E18i —

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 d5 8.Ne5 Nbd7

Eval: [+0.29]

Les coups candidats

9.Qa4 — 43.6% (782 parties)

Ambassadeurs : Simonian, Hrair (4x), Skembris, Spyridon (3x), Wicklund-Hansen, Gunnar (3x), Hlinka, Michal (3x), Van Scheltinga, Theo (2x), Gonzalez Zamora, Juan Carlos (2x), Vasovski, Nikola (2x), Gardim, Leonardo D Almada (2x)

9.cxd5 — 18.4% (330 parties)

Ambassadeurs : Auger, Bertrand (3x), Santos, Antonio P (2x), Mueller, Constantin (2x), Skjoldager, Per (2x), Sergeant, Philip Walsingham (1x), Price, Hubert E (1x), Pasero, Pedro (1x), Lalich, Voyin (1x)

9.Bf4 — 17.1% (307 parties)

Ambassadeurs : Bernasek, Jan (2x), Davidson, Jacques (1x), Van Hartingsvelt, Hendrik (1x), Stahlberg, Gideon (1x), Skalicka, Karel (1x), Schmidt, Gerhard (1x), Boehlig, Heinz, Dr. (1x), Turner, Abe J (1x)

9.Nxd7 — 4.7% (85 parties)

Ambassadeurs : Duverne, Jean-Marie (2x), Couspeyre, Thierry (2x), Bruce, Rowena M (1x), Welch, Charles (1x), Both, Gergely (1x), Pavlatos, Kostantinos (1x), Echternach, S. (1x), Varad Ashok Ban (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.Qa4	9.cxd5	9.Bf4	9.Nxd7
<1800	85	41%	13%	19%	7%
1800-2200	943	41%	18%	18%	5%
2200-2600	449	58%	16%	17%	2%
2600+	2	—	100%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9.Qa4	9.cxd5	9.Bf4	9.Nxd7
1870s	1	100%	—	—	—
1920s	7	29%	43%	14%	—
1930s	3	67%	33%	—	—
1940s	6	50%	—	17%	17%
1950s	12	17%	42%	8%	8%
1960s	13	54%	23%	8%	—
1970s	37	43%	41%	3%	—
1980s	70	54%	27%	4%	4%
1990s	218	37%	23%	17%	3%
2000s	504	40%	17%	16%	6%
2010s	761	46%	16%	19%	5%
2020s	161	49%	16%	23%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.Qa4	46%	49%	▲ +3.1%
9.cxd5	16%	16%	+0.4%
9.Bf4	19%	23%	▲ +4.1%
9.Nxd7	5%	2%	▼ -2.8%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 1 partie

Parties historiques

9.Qa4 — 43.6% (782 parties)

1871 — Heinicke, Herbert vs Seitz, Alexander — 1-0 — GER
1921 — Kostic, Barbara vs Davidson Gallego, Jorge — 1-0 — The Hague NED
1926 — Takacs, Sandor vs Nagy, Geza — 1-0 — Budapest HUN
1937 — De Groot, Adriaan vs Zita, Frantisek — 1/2-1/2 — Stockholm SWE
1938 — Zagoriansky, Evgeny vs Vasiliev, Viktor A — 1/2-1/2 — Leningrad RUS

9.cxd5 — 18.4% (330 parties)

1923 — Bogoljubow, Efim vs Nimzowitsch, Aron — 1-0 — Carlsbad CZE
1923 — Pokorny, Alois vs Vukovic, Vladimir — 1-0 — Brno-Vienna
1928 — Sergeant, Philip Walsingham vs Price, Hubert E — 0-1 — Hastings ENG
1938 — Pasero, Pedro vs Lalich, Voyin — 1/2-1/2 — Argentina
1952 — Spanjaard, Eduard vs Van Donk, Henk — 1-0 — Veenendaal

9.Bf4 — 17.1% (307 parties)

1927 — Davidson, Jacques vs Van Hartingsvelt, Hendrik — 1-0 — Amsterdam NED
1945 — Stahlberg, Gideon vs Skalicka, Karel — 1-0 — Quilmes
1957 — Turner, Abe J vs Seidman, Herbert — 0-1 — New York, NY USA
1963 — Schmidt, Gerhard vs Boehlig, Heinz, Dr. — 1/2-1/2 — Leipzig GER
1977 — Sahovic, Dragutin vs Gaprindashvili, Nona — 1/2-1/2 — Lone Pine, CA USA

9.Nxd7 — 4.7% (85 parties)

1946 — Bruce, Rowena M vs Welch, Charles — 1/2-1/2 — Nottingham ENG
1956 — Both, Gergely vs Pavlatos, Kostantinos — 1/2-1/2 — Moscow RUS
1982 — Rietveld, Johan vs Oving, Willem — 1/2-1/2 — Alkmaar open
1985 — Janus, Elfi vs Stoffers, Elsbeth — 1/2-1/2 — Dueren
1989 — Echternach, S. vs Varad Ashok Ban — 0-1 — GER

	♔ 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)	—
Cases faibles	● e4	—
Centre	● d4 (1v0)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Actif (mob. 5)
Bb7		● Bb7 Ok (mob. 3)
Be7		● Be7 Actif (mob. 4)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	1 (a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5	—

Partie
1923 Karlsbad – Round 1 – Bogoljubow, Efim – 1-0 – Nimzowitsch, Aron – G43 1. d4 Nf6 2. Nf3 b6 3. c4 e6 4. Nc3 Bb7 5. g3 Be7 6. Bg2 O-O 7. O-O d5 8. Ne5 Nbd7 9. cxd5 Nxe5 10. d6 Bxg2
1926 Budapest – Round 9 – Takacs, Sandor – 1-0 – Nagy, Geza – G52 1. c4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. Nc3 O-O 7. d4 d5 8. Ne5 Nbd7 9. Qa4 Nxe5 10. dxe5 Nd7
1937 Stockholm SWE – Round 16 – De Groot, Adriaan – 1/2-1/2 – Zita, Frantisek – G73 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d5 8. Ne5 Nbd7 9. Qa4 c6 10. e4 Nxe5
1938 Leningrad – Round 1 – Zagoriansky, Evgeny – 1/2-1/2 – Vasiliev, Viktor A – G13 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. c4 O-O 7. Nc3 d5 8. Ne5 Nbd7 9. Qa4 c6 10. Rd1 Nxe5
1941 Mar del Plata – Round 17 – Bolbochan, J. – 1-0 – Graf, Sascha – G129 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. Nf3 Be7 5. g3 O-O 6. Bg2 b6 7. O-O Bb7 8. Ne5 Nbd7 9. Qa4 Nxe5 10. dxe5 Nd7
1943 Prague – Round 14 – Opocensky, Karel – 1-0 – Sucha, Ruzena – G114 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 b6 5. Nf3 Bb7 6. O-O Be7 7. Nc3 O-O 8. Ne5 Nbd7 9. Qa4 Nxe5 10. dxe5 Nd7
1945 Pan American – Round 1 – Araiza Munoz, Jose Joaquin – 1/2-1/2 – Seidman, Herbert – G58 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7. Nc3 d5 8. Ne5 Nbd7 9. h3 c5 10. cxd5 exd5
1945 Quilmes – Round 5 – Stahlberg, Gideon – 1-0 – Skalicka, Karel – G22 1. Nf3 d5 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Nf6 6. d4 Be7 7. Nc3 O-O 8. Ne5 Nbd7 9. Bf4 Rc8 10. Qa4 c5
1954 URS Team Ch – Round 2 – Cherepkov, Alexander V – 1/2-1/2 – Klovans, Janis – G33 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. d4 b6 7. Ne5 Bb7 8. Nc3 Nbd7 9. cxd5 Nxe5 10. d6 Nc6
1955 Budapest HUN – Round ? – Gasztonyi, Endre – 1-0 – Somogyi, Istvan – G14 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d5 8. Ne5 Nbd7 9. Bg5 Ne4 10. Bxe7 Qxe7
1957 New York ch-USA – Round 4 – Turner, Abe J – 0-1 – Seidman, Herbert – G21 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 O-O 7. O-O d5 8. Ne5 Nbd7 9. Bf4 c5 10. cxd5 Nxd5
1960 BUL-ch14 Sofia BUL – Round 5 – Minev, Nikolay N – 1-0 – Dimitrov, Ilija – G18 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d5 8. Ne5 Nbd7 9. Qa4 c6 10. Rd1 Nxe5
1960 Olympiad prel I – Round 4 – Bergraser, Volf – 1-0 – Bachtiar, Arovah – G11 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. c4 O-O 7. Nc3 d5 8. Ne5 Nbd7 9. cxd5 Nxe5 10. d6 Nc6
1964 POL-ch21 Warsaw POL – Round 15 – Gawlikowski, Stanislaw – 1-0 – Nowacki Montoya, Andree Daniel – G37 1. c4 Nf6 2. Nf3 e6 3. Nc3 d5 4. d4 Be7 5. g3 b6 6. Bg2 Bb7 7. Ne5 O-O 8. O-O Nbd7 9. cxd5 exd5 10. Qb3 c6
1967 FRA Ch Dieppe FRA – Round 10 – Thiellement, Andre – 1-0 – Albazi Hanna, Kamil Nicolas – G39 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. d4 O-O 7. Nc3 d5 8. Ne5 Nbd7 9. Qa4 Nxe5 10. dxe5 Ng4
1967 Zierikzee ch-NED – Round 5 – Rosenthal, Max Manuel – 1/2-1/2 – Van Scheltinga, Theo – G26 1. c4 Nf6 2. Nf3 e6 3. d4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d5 8. Ne5 Nbd7 9. Qa4 Nxe5 10. dxe5 Ne4

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