E54g — Nimzo-Indian: Main Line, 7…dxc4 8.Bxc4 cxd4 9.exd4 a6

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 cxd4 9.exd4 a6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte d4, case forte e5, case forte g5, Bc4 actif, paire de fous, colonne e.
Faiblesses adverses : arriéré b7, Bc8 enfermé.
Problèmes : Bc1 enfermé, isolé d4.
Plans :
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4
● Rc — Tour sur colonne c
● Re — Tour sur colonne e

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte d5, avant-poste d5(C), Bb4 actif, paire de fous, colonne d.
Faiblesses adverses : isolé d4, Bc1 enfermé.
Problèmes : Bc8 enfermé, arriéré b7, 3 pièces non développées (B8, C8, A8).
Plans :
● ...Bd7 — PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bg4, ...Bf5)
● ...Nbd7 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...e5 — Rupture
● ...Rc — Tour sur colonne c

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E54g — Main Line

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 cxd4 9.exd4 a6

Eval: [+0.08]

Les coups candidats

10.Bg5 — 34.8% (222 parties) →

Ambassadeurs : Emms, John M (6x), Korchnoi, Viktor (3x), Lyrberg, Patrik (3x), Taimanov, M. (2x), Berg, Kenneth (2x), Van Brussel, Bert (2x), Sokolov, Ivan (2x), Mancini, Mario (2x)

10.a3 — 22.7% (145 parties)

Ambassadeurs : Dolmatov, Sergey (3x), Kharitonov, Adil (2x), Berg, Klaus (2x), Kastarnov, Stanislav (2x), Palkovi, Jozsef (2x), Harmon, Clark (2x), Chandler, Murray G (2x), Kordts, Wolfgang (2x)

10.a4 — 22.1% (141 parties)

Ambassadeurs : Vaisser, Anatoly (4x), Marciano, David (3x), Lautier, Joel (3x), Riazantsev, Alexander (3x), Kharitonov, Adil (2x), Psakhis, Lev (2x), Sadler, Matthew D (2x), Nickel, Arno (2x)

10.Qe2 — 5.8% (37 parties)

Ambassadeurs : Opocensky, Karel (1x), Donegan, Alfred (1x), Kottnauer, Cenek (1x), Rossolimo, Nicolas (1x), Foltys, Jan (1x), Stalda, Giuseppe (1x), Green, Arnold Yorvath (1x), Cafferty, Bernard (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10.Bg5	10.a3	10.a4	10.Qe2
<1800	9	22%	22%	33%	—
1800-2200	109	35%	29%	22%	5%
2200-2600	391	38%	22%	20%	5%
2600+	37	19%	16%	43%	—

Évolution par décennie (% des parties)

Décennie	N parties	10.Bg5	10.a3	10.a4	10.Qe2
1930s	1	—	—	—	100%
1940s	4	50%	—	—	50%
1950s	13	31%	15%	8%	31%
1960s	5	40%	20%	20%	20%
1970s	9	44%	—	11%	22%
1980s	27	41%	26%	19%	—
1990s	122	45%	12%	17%	1%
2000s	291	32%	23%	27%	5%
2010s	144	30%	31%	21%	6%
2020s	22	36%	41%	14%	9%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10.Bg5	30%	36%	▲ +6.5%
10.a3	31%	41%	▲ +9.7%
10.a4	21%	14%	▼ -7.2%
10.Qe2	6%	9%	▲ +2.8%

Joueurs célèbres

Champions du monde dans cette position

Kramnik, Vladimir — 1 partie

Parties historiques

10.Bg5 — 34.8% (222 parties)

1946 — Kotov Lundqvist, Alex vs Estrin, Yakov — 1/2-1/2 — Moscow RUS
1949 — Furman, Slavomir vs Bannik, Anatolij — 0-1 — Vilnius LTU
1953 — Olafsson, Fridrik vs Keller, Dieter — 1-0 — Copenhagen DEN
1955 — Steiner, Herman vs Rozsa, Bela — 0-1 — Long Beach, CA USA
1955 — Panno, Oscar vs Petrosian, Tigran V. — 1/2-1/2 — Goteborg SWE

10.a3 — 22.7% (145 parties)

1953 — Toprover, Viktor G. vs Estrin, Yakov — 0-1 — Leningrad RUS
1955 — Schroeder, Jakob vs Rozsa, Balint — 1-0 — ?
1965 — Grafka vs Spengler, Ewan — 1/2-1/2 — corr Baltic
1980 — Dolmatov, Sergey vs Larsen, Benjamin Holsko — 1-0 — Amsterdam NED
1982 — Dolmatov, Sergey vs Psakhis, Lev — 1/2-1/2 — Erevan ARM

10.a4 — 22.1% (141 parties)

1957 — Trifunovic, Petar vs Spassky, Boris Vasily — 1/2-1/2 — Vienna AUT
1962 — Cruz, Raul C. vs Liberman Rubinstein, Joseph — 1-0 — Mar del Plata ARG
1974 — Romm, Meir vs Pelai, Giora — 1/2-1/2 — Israel
1981 — Vehre, John vs Katrein, Matthew — 1/2-1/2 — cr.
1982 — Bronstein, David I vs Kharitonov, Adil — 1-0 — Yaroslavl

10.Qe2 — 5.8% (37 parties)

1936 — Opocensky, Karel vs Donegan, Alfred — 1-0 — Trebitsch mem19
1949 — Kottnauer, Cenek vs Rossolimo, Nicolas — 1/2-1/2 — Venice ITA
1949 — Foltys, Jan vs Stalda, Giuseppe — 1-0 — Venice ITA
1955 — Saigin, Vladimir vs Khalilbeili, Sultan — 1-0 — Voroshilovgrad
1956 — Ljungquist, Lennart vs Keller, Dieter — 1-0 — Moscow RUS

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	● d4	—
Arriérés	—	● b7
Chaînes	—	● b7→a6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (2v1), ● e5 (2v0), ● g5 (2v0)	● d5 (3v2)
Cases faibles	—	—
Centre	● d4 (2v1), ● e5 (2v0)	● d5 (3v2)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Ouvertes	● c	● c
Semi-ouvertes	● e	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bc4	● Bc4 Actif (mob. 7)
Bb4		● Bb4 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	3 (b8, c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d4-d5	● …e6-e5

Partie
1949 Venice – Round 5 – Kottnauer, Cenek – 1/2-1/2 – Rossolimo, Nicolas – G41 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 c5 8. O-O cxd4 9. exd4 a6 10. Qe2 b5
1949 Venice – Round 6 – Foltys, Jan – 1-0 – Stalda, Giuseppe – G48 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 dxc4 7. Bxc4 c5 8. O-O cxd4 9. exd4 a6 10. Qe2 b5
1953 URS chT sf – Round ? – Toprover, Viktor G. – 0-1 – Estrin, Yakov – G6 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. a3 Be7
1953 Wch-jr final – Round 5 – Sherwin, James T – 0-1 – Keller, Dieter – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. Qd3 Nbd7
1955 URS Team Ch sf – Round ? – Saigin, Vladimir – 1-0 – Khalilbeili, Sultan – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. Qe2 Be7
1956 Copenhagen – Round 1 – Ravn, Palle – 0-1 – Enevoldsen, Jens – G6 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. Bd3 Nc6
1956 Moscow olm prel – Round 5 – Ljungquist, Lennart – 1-0 – Keller, Dieter – G145 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 c5 6. Bd3 d5 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. Qe2 b5
1957 EU Team Ch – Round 3 – Trifunovic, Petar – 1/2-1/2 – Spassky, Boris Vasily – G24 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. a4 Nc6
1959 York ch-BCF – Round 3 – Green, Arnold Yorvath – 0-1 – Cafferty, Bernard – G39 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 cxd4 9. exd4 a6 10. Qe2 b5
1961 Belgrade Open – Round 2 – Gligorić, Svetozar – 1-0 – Djurasevic, Bozidar – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. Qe2 b5
1962 Mar del Plata KIM – Round 1 – Cruz, Raul C. – 1-0 – Liberman Rubinstein, Joseph – G3 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 O-O 6. Bd3 c5 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. a4 Nbd7
5. Kings Tournament 2011 – Round 1 – Nisipeanu, Liviu-Dieter – 1/2-1/2 – Karjakin, Sergey – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 cxd4 9. exd4 a6 10. a3 Bxc3
Amber-blindfold 20th 2011 – Round 2 – Topalov, Veselin – 1/2-1/2 – Karjakin, Sergey – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 cxd4 9. exd4 a6 10. a4 Nc6
Amber-rapid 20th 2011 – Round 1 – Gelfand, Boris – 1-0 – Karjakin, Sergey – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4 cxd4 9. exd4 a6 10. a4 Nc6
Corsica Masters Rapid 2001 – Round 1.1 – Lautier, Joel – 1/2-1/2 – Barsov, Alexei – G2 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. a4 Nc6
FIDE WCh KO 2001 – Round 1.1 – Conquest, Stuart C – 1/2-1/2 – Gyimesi, Zoltan – G55 1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 c5 7. O-O cxd4 8. exd4 dxc4 9. Bxc4 a6 10. a3 Bxc3
Hoogovens 1996 – Round 12 – Huebner, Robert – 1/2-1/2 – Dreev, Aleksey – G62 1. c4 c6 2. e4 d5 3. exd5 cxd5 4. d4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. Bd3 dxc4 8. Bxc4 O-O 9. O-O a6 10. Ne5 b5
PCA/Intel-GP 1994 – Round 3 – Ivanchuk, Vasyl – 0-1 – Kramnik, Vladimir – G24 1. c4 c6 2. e4 d5 3. exd5 cxd5 4. d4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. Bd3 dxc4 8. Bxc4 O-O 9. O-O a6 10. Bb3 b5

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