E21i — Nimzo-Indian: Nimzo-Queen’s Hybrid, 5.Qb3 a5

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.Qb3 a5 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Bg5 (Fou actif (mobilité 7), Développer c1 — 40 % des parties) ; g3 (Préparer le fianchetto — 33 % des parties) ; a3 (Préparer expansion aile dame — 18 % des parties) ; e3 (Libérer Bf1, préparer Bd3 — 7 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...Bb7 (Fianchetto, fou sur la grande diagonale — 56 % des parties) ; ...h6 (11 % des parties) ; ...a4 (9 % des parties) ; ...Bxc3+ (Fou actif (mobilité 5) — 9 % des parties) ; ...Nc6 (Développer b8 — 7 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● b6→a5, c7→b6, d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 0)
Bb4		● Bb4 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Clouages	● knight c3	—
Non développées	4 (● c1, ● f1, ● a1, ● h1)	4 (● b8, ● c8, ● a8, ● h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre	● Au centre
Droits de roque	O-O / O-O-O	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● c4-c5, ● d4-d5	● …c7-c5, ● …d7-d5, ● …e6-e5

Partie
10. Sinquefield Cup 2023 – Round 5.2 – Aronian, Levon – 1-0 – Firouzja, Alireza – G18 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 a5 6. g3 Bb7 7. Bg2 d6 8. O-O Nbd7 9. Qc2 O-O 10. Rd1 Qe7
19. European Teams 2013 – Round 3.1 – Edouard, Romain – 1-0 – Efimenko, Zahar – G96 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 a5 6. g3 Bb7 7. Bg2 O-O 8. O-O Na6 9. a3 Bxc3 10. Qxc3 d5
1943 Mar del Plata – Round 1 – Rossetto, Hector – 1-0 – Concepcion Villegas, Bryan Uriel – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 a5 6. a3 Bxc3+ 7. Qxc3 Bb7 8. g3 d6 9. Bg2 Nbd7 10. O-O O-O
1951 Bad Pyrmont zt – Round 11 – Gligorić, Svetozar – 1-0 – Kramer, Haije – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 a5 6. a3 Bxc3+ 7. bxc3 d6 8. a4 Nbd7 9. Nd2 Bb7 10. f3 e5
1955 URS Ch sf – Round ? – Goldenov, Boris P – 1/2-1/2 – Sokolsky, Alexey – G4 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. Qb3 a5 6. a3 a4 7. Qc2 Bxc3+ 8. Qxc3 Bb7 9. Bg5 d6 10. e3 Nbd7
1971 Hoogovens – Round 1 – Van Scheltinga, Theo – 0-1 – Hecht, Hans-Joachim – G63 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 a5 6. g3 Bb7 7. Bg2 d6 8. O-O Bxc3 9. Qxc3 Nbd7 10. Ne1 Bxg2
41. Olympiad Open 2014 – Round 6.13 – Lupulescu, Constantin – 1-0 – Zhigalko, Sergei – G402 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 a5 6. g3 Bb7 7. Bg2 O-O 8. O-O h6 9. Rd1 Re8 10. Bf4 Bxc3
63. ch-USA 2019 – Round 8.6 – Gareyev, Timur – 1/2-1/2 – Akobian, Varuzhan – G48 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 a5 6. Bg5 Bb7 7. e3 h6 8. Bh4 g5 9. Bg3 Ne4 10. Bd3 d6
Linares 1985 – Round 1 – Polugaevsky, Lev – 0-1 – Ljubojevic, Ljubomir – G14 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. Qb3 a5 6. g3 Nc6 7. Bg2 a4 8. Qc2 Ba6 9. a3 Bxc3+ 10. Qxc3 Na5
World Blitz 2022 – Round 17.27 – Maghsoodloo, Parham – 0-1 – Makhnev, Denis – G903 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Qb3 a5 6. a3 Bxc3+ 7. Qxc3 a4 8. Qc2 Bb7 9. Bg5 d6 10. e3 Nbd7

E21i — Nimzo-Queen’s Hybrid (1943)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.Qb3 a5

Les coups candidats

6.Bg5 — 39.6% (120 parties)

Ambassadeurs : Khalifman, Alexander (4x), Miles, Anthony J (4x), Tunik, Gennady (3x), Langeweg, Kick (2x), Theulings, Paul-Peter (2x), Garcia Palermo, Carlos Horacio (2x), Quiroga, Facundo (2x), Gareyev, Timur (2x)

6.g3 — 32.7% (99 parties)

Ambassadeurs : Edouard, Romain (7x), Barsov, Alexei (5x), Gretarsson, Helgi Ass (4x), Giorgadze, Tamaz (3x), Shishkin, Vadim (3x), Sokolov, Andrei (2x), Mateo, Ramon (2x), Litynska, Marta (2x)

6.a3 — 17.8% (54 parties)

Ambassadeurs : Berkes, Ferenc (2x), Gligorić, Svetozar (1x), Kramer, Haije (1x), Goldenov, Boris P (1x), Sokolsky, Alexey (1x), Karason, Askell O (1x), Ostenstad, Berge (1x), Huss, Andreas (1x)

6.e3 — 6.9% (21 parties)

Ambassadeurs : Henley, Ron (2x), Kudrin, Sergey (2x), Garcia Palermo, Carlos Horacio (2x), Franco Ocampos, Zenon (2x), Frombach, Ralf (2x), De Firmian, Nick (1x), Lobo, Richard (1x), Savon, Vladimir (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.Bg5	6.g3	6.a3	6.e3
<1800	2	100%	—	—	—
1800-2200	51	47%	20%	24%	4%
2200-2600	220	39%	35%	16%	9%
2600+	17	41%	47%	12%	—

Évolution par décennie (% des parties)

Décennie	N parties	6.Bg5	6.g3	6.a3	6.e3
1950s	2	—	—	100%	—
1970s	2	—	100%	—	—
1980s	42	17%	48%	17%	17%
1990s	72	46%	32%	18%	1%
2000s	95	49%	22%	18%	7%
2010s	61	39%	33%	18%	7%
2020s	29	31%	45%	14%	7%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.Bg5	39%	31%	▼ -8.3%
6.g3	33%	45%	▲ +12.0%
6.a3	18%	14%	▼ -4.2%
6.e3	7%	7%	+0.3%

Parties historiques

6.Bg5 — 39.6% (120 parties)

1982 — Abanin, Vladimir vs Sokolov, Andrei — 0-1 — Moscow RUS
1984 — Fries-Nielsen, Jens Ove vs Arnason, Jon L — 1-0 — Esbjerg DEN
1984 — Schroer, Jonathan vs Frumkin, Edward — 1-0 — New York Int
1984 — Ivanov, Igor V. vs Bakheet Farag — 1/2-1/2 — ?
1985 — Grizou, Regis vs Adrian, Claude — 1-0 — Clermont-Ferrand FRA

6.g3 — 32.7% (99 parties)

1970 — Ghitescu, Theodor vs Johansson, Gunnar — 1-0 — Siegen GER
1971 — Bosch van Rosenthal, Edzard vs Hecht, Hans-Joachim — 0-1 — Wijk aan Zee NED
1980 — Barczay, Laszlo vs Petran, Pal — 1-0 — Budapest HUN
1983 — Ubilava, Elizbar vs Razuvaev, Yuri S — 1/2-1/2 — Tournament URS
1983 — Giorgadze, Tamaz vs Sokolov, Andrei — 1/2-1/2 — Nikolaev Nikolaev UKR

6.a3 — 17.8% (54 parties)

1951 — Gligorić, Svetozar vs Kramer, Haije — 1-0 — Bad Pyrmont GER
1955 — Goldenov, Boris P vs Sokolsky, Alexey — 1/2-1/2 — Minsk BLR
1984 — Grivas, Efstratios vs Ionescu, Constantin — 1/2-1/2 — Athens GRE
1984 — Hernandez Ronny vs Garcia Martinez, Silvino — 1/2-1/2 — Bayamo
1985 — Fedder, Steen vs Vogel, Jaap — 1/2-1/2 — Kopenhagen open

6.e3 — 6.9% (21 parties)

1981 — Henley, Ron vs Kudrin, Sergey — 1-0 — Lone Pine open
1982 — Savon, Vladimir vs Aseev, Konstantin N — 1-0 — Moscow RUS
1982 — Garcia Palermo, Carlos Horacio vs Franco Ocampos, Zenon — 1-0 — Mar del Plata ARG
1982 — Garcia Palermo, Carlos Horacio vs Franco Ocampos, Zenon — 1-0 — Mar del Plata ARG
1983 — Henley, Ron vs Wahjuwidajat, Utut Adianto — 0-1 — Jakarta / Yogya / Bali