E51g — Nimzo-Indian: 4.e3 O-O 5.Nf3 d5 6.Bd3 Nc6 7.O-O a6

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 Nc6 7.O-O a6 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte d4, case forte e5, Bd3 actif, paire de fous.
Faiblesses adverses : Bc8 enfermé.
Problèmes : Bc1 enfermé.
Plans :
● Bd2 — Développer Bc1
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : avant-poste e4(C), Bb4 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé.
Problèmes : Bc8 enfermé.
Plans :
● ...Bd7 — PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bg4, ...Bf5)
● ...Bg4 — Clouer Nf3
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E51g —

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 Nc6 7.O-O a6

Eval: [+0.38]

Les coups candidats

8.h3 — 33.1% (96 parties)

Ambassadeurs : Mitkov, Nikola (7x), Farago, Ivan (6x), Gligoric, Svetozar (4x), Gulko, Boris (4x), Portisch, Lajos (3x), Knezevic, Milorad (3x), Sydor, Andrzej (2x), Fechner, Joachim, Dr. (2x)

8.a3 — 26.6% (77 parties)

Ambassadeurs : Mitkov, Nikola (9x), Farago, Ivan (4x), Vaganian, Rafael A (2x), Lesiege, Alexandre (2x), Gulko, Boris (2x), Agdamus, Jose Luis (1x), Emma, Jaime (1x), Lipiniks, Leonardo (1x)

8.Qe2 — 12.4% (36 parties)

Ambassadeurs : Donner, Jan-Hein (3x), Taimanov, Mark (2x), Plachetka, Jan (2x), Sydor, Andrzej (2x), Bellin, Robert (2x), Furman, Bartosz (2x), Puc, Stojan (1x), Neikirkh, Oleg (1x)

8.Qc2 — 12.4% (36 parties)

Ambassadeurs : Kovacevic, Vlatko (2x), Furman, Boris (2x), Rotstein, Jefim (1x), Platonov, Igor V (1x), Cafure (1x), Banda Emma (1x), Espinosa Flores, Rafael Emilio (1x), Canobra, Juvenal (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.h3	8.a3	8.Qe2	8.Qc2
<1800	8	25%	62%	—	—
1800-2200	32	25%	19%	3%	31%
2200-2600	173	35%	30%	13%	8%
2600+	1	—	—	100%	—

Évolution par décennie (% des parties)

Décennie	N parties	8.h3	8.a3	8.Qe2	8.Qc2
1900s	1	—	—	—	—
1940s	1	—	—	100%	—
1950s	4	25%	25%	25%	25%
1960s	24	38%	21%	17%	8%
1970s	44	36%	18%	16%	9%
1980s	42	48%	14%	14%	12%
1990s	53	34%	38%	8%	8%
2000s	67	34%	33%	12%	10%
2010s	51	18%	27%	10%	25%
2020s	3	—	33%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.h3	18%	0%	▼ -17.6%
8.a3	27%	33%	▲ +5.9%
8.Qe2	10%	0%	▼ -9.8%
8.Qc2	25%	0%	▼ -25.5%

Parties historiques

8.h3 — 33.1% (96 parties)

1955 — Bannik, Anatolij vs Mukhitdinov, Mamadzhan — 1/2-1/2 — Voroshilovgrad
1961 — Stupica, Janez vs Sofrevski, Jovan — 1-0 — Zagreb CRO
1962 — ? vs Zurakhov, Vladlen Y — 0-1 — Kiev UKR
1963 — Kozma, Julius vs Trapl, Jindrich — 1-0 — Prague CZE
1963 — Furman, Semyon vs Kholmov, Ratmir D — 0-1 — Sverdlovsk RUS

8.a3 — 26.6% (77 parties)

1955 — Lipiniks, Leonardo vs Sanguineti, Raúl Carlos — 0-1 — Buenos Aires ARG
1960 — Tolush, Alexander V vs Antoshin, Vladimir S — 0-1 — Vilnius LTU
1965 — Agdamus, Jose Luis vs Emma, Jaime — 0-1 — Buenos Aires ARG
1968 — Abarca Rodriguez, Keisy Dariana vs Bilyap, Siradzhetin — 1/2-1/2 — Lugano SUI
1969 — Cherepkov, Alexander V vs Vaganian, Rafael A — 1-0 — Sochi RUS

8.Qe2 — 12.4% (36 parties)

1945 — Puc, Stojan vs Neikirkh, Oleg — 1/2-1/2 — Novi Sad SRB
1958 — Trifunovic, Petar vs Lukic, Arsenije — 1/2-1/2 — Sarajevo BIH
1962 — Lokvenc, Josef vs Taimanov, Mark — 1/2-1/2 — Marianske Lazne
1964 — Donner, Jan-Hein vs Lengyel, Levente — 1/2-1/2 — Hoogovens Beverwijk NED
1964 — Donner, Jan-Hein vs Hein-Lengyel, Levente — 1/2-1/2 — Beverwijk NED

8.Qc2 — 12.4% (36 parties)

1957 — Espinosa Flores, Rafael Emilio vs Canobra, Juvenal — 1-0 — San Nicolas
1961 — Rotstein, Jefim vs Platonov, Igor V — 1/2-1/2 — Kiev UKR
1965 — Cafure vs Banda Emma — 0-1 — Buenos Aires ch-ARG
1971 — Kapic, Ibrahim vs Kovacevic, Vlatko — 1/2-1/2 — Pula CRO
1972 — Debarnot, Roberto vs Rubinetti, Alejandro — 1/2-1/2 — Buenos Aires ch-ARG

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→e3, e3→d4	● e6→d5, b7→a6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (2v1), ● e5 (2v1)	—
Cases faibles	● e4	—
Centre	● d4 (2v1), ● e5 (2v1)	● d5 (3v2)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bd3	● Bd3 Actif (mob. 7)
Bb4		● Bb4 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	2 (c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5, ● e3-e4	● …e6-e5

Partie
1900 Paris blind-simul – Round ? – Pillsbury, Harry – 1-0 – GuyardLemarchand – G12 1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Nf3 Nc6 5. e3 Nf6 6. Bd3 O-O 7. O-O a6 8. Ne2 dxc4 9. Bxc4 Ne7 10. Qc2 Ng6
1945 Novi Sad – Round 22 – Puc, Stojan – 1/2-1/2 – Neikirkh, Oleg – G204 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 Nc6 7. O-O a6 8. Qe2 Qe7 9. e4 dxc4 10. Bxc4 e5
1955 American Continental – Round 15 – Lipiniks, Leonardo – 0-1 – Sanguineti, Raúl Carlos – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 5. Bd3 d5 6. Nf3 O-O 7. O-O a6 8. a3 dxc4 9. Bxc4 Bd6 10. e4 e5
1955 URS Team Ch fin – Round 5 – Bannik, Anatolij – 1/2-1/2 – Mukhitdinov, Mamadzhan – G16 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 5. Nf3 O-O 6. Bd3 d5 7. O-O a6 8. h3 dxc4 9. Bxc4 Bd6 10. e4 e5
1958 YUG Ch 13th – Round 10 – Trifunovic, Petar – 1/2-1/2 – Lukic, Arsenije – G57 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd3 Nc6 7. O-O a6 8. Qe2 dxc4 9. Bxc4 Bd6 10. Rd1 Qe8
1960 URS Ch sf – Round 2 – Tolush, Alexander V – 0-1 – Antoshin, Vladimir S – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. a3 dxc4 9. axb4 cxd3 10. b5 Nb4
1961 Zagreb – Round 11 – Stupica, Janez – 1-0 – Sofrevski, Jovan – G96 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. h3 h6 9. Qe2 dxc4 10. Bxc4 Bd6
1961 Zagreb – Round 7 – Rabar, Braslav – 1/2-1/2 – Sofrevski, Jovan – G66 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. cxd5 exd5 9. Ne5 Bd6 10. f4 Ne7
1963 CSR Ch – Round 2 – Kozma, Julius – 1-0 – Trapl, Jindrich – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. h3 dxc4 9. Bxc4 Bd6 10. e4 b5
1964 Amsterdam Interzonal – Round 10 – Portisch, Lajos – 1/2-1/2 – Pachman, Ludek – G97 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. h3 h6 9. a3 dxc4 10. Bxc4 Bd6
1964 Hoogovens Beverwijk NED – Round ? – Donner, Jan-Hein – 1/2-1/2 – Lengyel, Levente – G54 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. Qe2 dxc4 9. Bxc4 Bd6 10. Rd1 Qe8
1966 Mar del Plata – Round 1 – Portisch, Lajos – 1-0 – Emma, Jaime – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. h3 h6 9. a3 dxc4 10. Bxc4 Bd6
1966 URS Ch sf Orel – Round 1 – Osnos, Viatcheslav – 1-0 – Chistiakov, Alexander – G10 1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 a6 7. O-O Nc6 8. h3 dxc4 9. Bxc4 Bd6 10. e4 e5
1967 Kraljevo – Round 13 – Janosevic, Dragoljub – 1/2-1/2 – Sokolov, Vladimir – G18 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Nf3 d5 6. Bd3 Nc6 7. O-O a6 8. cxd5 exd5 9. Ne5 Bd6 10. f4 Ne7
1967 Vrnjacka Banja zt – Round 9 – Ivkov, Borislav – 1-0 – Bilyap, Siracettin – G59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. h3 dxc4 9. Bxc4 Bd6 10. e4 e5
1969 Spartak Ch – Round 1 – Cherepkov, Alexander V – 1-0 – Vaganian, Rafael A – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. a3 dxc4 9. Bxc4 Bd6 10. e4 e5
1970 Palma de Mallorca Interzonal – Round 13 – Panno, Oscar – 1/2-1/2 – Reshevsky, Samuel – G104 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. h3 dxc4 9. Bxc4 Bd6 10. e4 e5
1970 Palma de Mallorca Interzonal – Round 2 – Reshevsky, Samuel – 1/2-1/2 – Rubinetti, Jorge – G102 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6 7. O-O a6 8. h3 dxc4 9. Bxc4 Bd6 10. e4 e5
1972 Skopje ol (Men) fin-A – Round 10 – Uddenfeldt, Dan – 1/2-1/2 – Sydor, Andrzej – G194 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Bb4 5. e3 O-O 6. Bd3 Nc6 7. O-O a6 8. a3 dxc4 9. Bxc4 Bd6 10. h3 10. ... e5

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