E18p — Queen’s Indian: 7.Nc3 Ne4 8.Bd2 f5 9.d5 Bf6

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.d5 Bf6 * ○ Trait aux Blancs

Ouverture — Tension centrale

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte f4, case forte b5, 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 c5, avant-poste c5(C), Bf6 actif, Bb7 actif, paire de fous.
Faiblesses adverses : Bg2 enfermé.
Plans :
● ...Nc6 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...c5 — Rupture
● ...d6 — Rupture
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E18p —

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.d5 Bf6

Eval: [+0.05]

Les coups candidats

10.Rc1 — 85.9% (486 parties) →

Ambassadeurs : De Blois Figueredo, Adria (5x), Grunberg, Mihai-Lucian (5x), Levitt, Jonathan P (4x), Ihlebak, Roar (4x), Tukmakov, Vladimir B (4x), Tiviakov, Sergei (4x), Zaja, Ivan (4x), Naumkin, Igor (4x)

10.Qc2 — 12.7% (72 parties)

Ambassadeurs : Adams, Michael (3x), Parma, Bruno (2x), Dzindzichashvili, Roman (2x), Naumkin, Igor (2x), Flores Alvarez, Rodrigo (1x), Cristia, Jose Maria (1x), Pelikan, Jan (1x), Stahlberg, Gideon (1x)

10.Nxe4 — 0.9% (5 parties)

Ambassadeurs : Pelikan, Jorge (1x), Stahlberg, Gideon (1x), Ristic, Nebojsa B (1x), Zafirovski, Mite (1x), Schuh, Hubert (1x), Goldberg, Alexander, Dr. (1x), Adelberg, David (1x), Pardo Simon, David (1x)

10.Re1 — 0.4% (2 parties)

Ambassadeurs : Pietzsch, Wolfgang (1x), Bilek, Istvan (1x), Sands, David A (1x), Williams, A. Howard (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10.Rc1	10.Qc2	10.Nxe4	10.Re1
<1800	2	100%	—	—	—
1800-2200	68	94%	6%	—	—
2200-2600	402	86%	12%	1%	0%
2600+	14	71%	29%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	10.Rc1	10.Qc2	10.Nxe4	10.Re1
1940s	5	40%	40%	20%	—
1950s	1	—	100%	—	—
1960s	3	—	67%	—	33%
1970s	13	77%	23%	—	—
1980s	57	86%	14%	—	—
1990s	167	86%	13%	1%	—
2000s	180	89%	11%	1%	—
2010s	115	86%	11%	1%	1%
2020s	25	92%	8%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10.Rc1	86%	92%	▲ +5.9%
10.Qc2	11%	8%	▼ -3.3%
10.Nxe4	1%	0%	▼ -0.9%
10.Re1	1%	0%	▼ -0.9%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 1 partie
Karpov, Anatoly — 1 partie

Parties historiques

10.Rc1 — 85.9% (486 parties)

1945 — Pelikán, Jiří vs Stahlberg, Gideon — 1-0 — Mar del Plata ARG
1949 — Ascencio Flores, Rodrigo vs Bolbochan, Jacobo — 1/2-1/2 — Mar del Plata ARG
1970 — Hawkes, John vs Bridgen, M. — 1-0 — corr England
1970 — Maschian, Houschang vs Trincardi, Tullio — 0-1 — Reggio Emilia ITA
1970 — Radashkovich, Itchak vs Fershter, Anatoly B — 1-0 — Leningrad RUS

10.Qc2 — 12.7% (72 parties)

1944 — Pelikan, Jan vs Stahlberg, Gideon — 1-0 — Mar del Plata ARG
1945 — Flores Alvarez, Rodrigo vs Cristia, Jose Maria — 0-1 — Vina del Mar CHI
1951 — Szabados, Eugenio vs Magrin, Antonio — 1/2-1/2 — Venice ITA
1968 — Bukic, Enver vs Parma, Bruno — 0-1 — Skopje MKD
1968 — Savon, Vladimir vs Parma, Bruno — 1-0 — Skopje MKD

10.Nxe4 — 0.9% (5 parties)

1944 — Pelikan, Jorge vs Stahlberg, Gideon — 1/2-1/2 — La Plata
1991 — Schuh, Hubert vs Goldberg, Alexander, Dr. — 0-1 — GER
1997 — Ristic, Nebojsa B vs Zafirovski, Mite — 1/2-1/2 — Niksic MNE
2009 — Adelberg, David vs Pardo Simon, David — 0-1 — Antalya TUR
2017 — Skatchkov, Valery vs Chekletsov, Ilya — 1-0 — Kazan RUS

10.Re1 — 0.4% (2 parties)

1967 — Pietzsch, Wolfgang vs Bilek, Istvan — 0-1 — Salgotarjan
2011 — Sands, David A vs Williams, A. Howard — 1/2-1/2 — Cardiff WLS

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3, c4→d5	● e6→f5, a7→b6, c7→b6, d7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● b5 (2v0)	● c5 (2v0)
Cases faibles	—	● g5
Centre	—	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bd2	● Bd2 Actif (mob. 6)
Bg2	● Bg2 Enfermé (mob. 2)
Bf6		● Bf6 Actif (mob. 6)
Bb7		● Bb7 Actif (mob. 4)
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	tension
Ruptures	● c4-c5, ● d5-d6, ● e2-e3	● …c7-c6, ● …c7-c5, ● …d7-d6, ● …e6-e5, ● …f5-f4

Partie
1944 La Plata Jockey Club – Round 14 – Pelikan, Jorge – 1/2-1/2 – Stahlberg, Gideon – G69 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. d4 O-O 7. Nc3 Ne4 8. Bd2 f5 9. d5 Bf6 10. Nxe4 fxe4
1944 Mar del Plata – Round 14 – Pelikan, Jan – 1-0 – Stahlberg, Gideon – G112 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 e6 5. O-O Be7 6. d4 O-O 7. Nc3 Ne4 8. Bd2 f5 9. d5 Bf6 10. Qc2 Qe8
1945 Vina del Mar – Round 3 – Flores Alvarez, Rodrigo – 0-1 – Cristia, Jose Maria – G11 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. c4 Be7 6. O-O O-O 7. Nc3 Ne4 8. Bd2 f5 9. d5 Bf6 10. Qc2 exd5
1967 Asztalos Memorial 10th – Round 10 – Pietzsch, Wolfgang – 0-1 – Bilek, Istvan – G51 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. d5 Bf6 10. Re1 Na6
1968 Skopje/Ohrid – Round 15 – Bukic, Enver – 0-1 – Parma, Bruno – G126 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. d5 Bf6 10. Qc2 Bxc3
1968 Skopje/Ohrid – Round 4 – Savon, Vladimir – 1-0 – Parma, Bruno – G29 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. d5 Bf6 10. Qc2 Na6

1944 La Plata Jockey Club – Round 14 – Pelikan, Jorge – 1/2-1/2 – Stahlberg, Gideon – G69

1944 Mar del Plata – Round 14 – Pelikan, Jan – 1-0 – Stahlberg, Gideon – G112

1945 Vina del Mar – Round 3 – Flores Alvarez, Rodrigo – 0-1 – Cristia, Jose Maria – G11

1967 Asztalos Memorial 10th – Round 10 – Pietzsch, Wolfgang – 0-1 – Bilek, Istvan – G51

1968 Skopje/Ohrid – Round 15 – Bukic, Enver – 0-1 – Parma, Bruno – G126

1968 Skopje/Ohrid – Round 4 – Savon, Vladimir – 1-0 – Parma, Bruno – G29