E23b — Nimzo-Indian: Spielmann, 4…c5 5.dxc5 Nc6 6.Bg5

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Bg5 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Bxf6 (Fou actif (mobilité 7) — 65 % des parties) ; e3 (Libérer Bf1, préparer Bd3 — 11 % des parties) ; Bh4 (7 % des parties) ; Nf3 (Développer g1 — 7 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...h6 (Poser la question au Bg5 — 66 % des parties) ; ...Bxc5 (Fou actif (mobilité 9) — 16 % des parties) ; ...Qa5 (Contrôle diagonale a5-e1, Prépare O-O-O — 10 % des parties) ; ...Nd4 (Cavalier centralisé en d4, Menace b3 — 5 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● c4, ● c5	—
Pions isolés	—	—
Arriérés	—	● d7
Chaînes	—	● d7→e6, f7→e6
Passés	—	—
Majorité	● aile dame 4v2	—

Cases

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

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 0)
Bg5	● Bg5 Actif (mob. 7)
Bb4		● Bb4 Actif (mob. 4)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	● knight c3	—
Non développées	4 (● g1, ● f1, ● a1, ● h1)	3 (● 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	—	● …d7-d6, ● …d7-d5

Partie
1931 Moskou ch-URS – Round 1 – Botvinnik, Mikhail – 1-0 – Mazel, Isaak Y – G41 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 Bxc5 7. Nf3 h6 8. Bh4 Qb6 9. Qc2 Be7 10. e4 d6
1932 Leningrad Ch – Round 1 – Model, Abram – 1-0 – Rabinovich, Ilya Mar – G13 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 Qa5 7. Bxf6 gxf6 8. e3 Qxc5 9. a3 Qa5 10. Ne2 Be7
1934 Leningrad ch-URS – Round 1 – Ragozin, Viacheslav – 1/2-1/2 – Chekhover, Vitaly – G57 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 h6 7. Bxf6 Qxf6 8. e3 O-O 9. Nf3 Bxc5 10. Be2 b6
1934 Leningrad ch-URS – Round 1 – Ragozin, Viacheslav – 1/2-1/2 – Mazel, Isaak Y – G55 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 Qa5 7. Bxf6 gxf6 8. Nf3 Bxc5 9. e3 b6 10. O-O-O Bb7
1935 Buenos Aires – Round 12 – Piazzini, Luis – 1/2-1/2 – Bolbochan, J. – G89 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 Qa5 7. Bxf6 gxf6 8. Nf3 Bxc5 9. e3 Bb4 10. Be2 Bxc3+
1936 Mar del Plata – Round 11 – Schwartzman, Alejandro – 1-0 – Letelier Martner, Rene – G79 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 h6 7. Bh4 g5 8. Bg3 Ne4 9. e3 Qf6 10. Ne2 h5
1936 Trade Unions – Round ? – Tolush, Alexander V – 0-1 – Mazel, Isaak Y – G30 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 Qa5 7. Bxf6 gxf6 8. e3 Bxc5 9. a3 b6 10. O-O-O Bb7
1939 Buenos Aires – Round 1 – Roodzant, Catharina – 0-1 – Rinder, Elfriede – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 Qa5 7. Bxf6 gxf6 8. e3 Qxc5 9. a3 Bxc3+ 10. Qxc3 Qe5
1939 Buenos Aires ol prel-C – Round 6 – Piazzini, Luis – 1-0 – O'Donovan, J. – G18 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 h6 7. Bh4 g5 8. Bg3 Ne4 9. e3 f5 10. Bd3 Nxc5
1942 Moscow Ch – Round 1 – Ragozin, Viacheslav – 1/2-1/2 – Aramanovich, I – G22 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. Bg5 Nc6 6. dxc5 Qa5 7. Bxf6 gxf6 8. Nf3 Qxc5 9. a3 Ba5 10. O-O-O Bxc3
1946 American Continental – Round 1 – Piazzini – 1/2-1/2 – Alvarez Martin, Pedro – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Bg5 h6 7. Bxf6 Qxf6 8. Nf3 Bxc5 9. e3 O-O 10. Be2 b6

E23b — Spielmann (1931)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Bg5

Les coups candidats

6…h6 — 65.5% (76 parties)

Ambassadeurs : Akopian, Vladimir (5x), Malaniuk, Vladimir P (3x), Faleg, Alberto (2x), Hase, Juan Carlos (2x), Nogueiras Santiago, Jesus (2x), Yudasin, Leonid (2x), Nerses, Nersessian (2x), Stern, Andrei R (2x)

6…Bxc5 — 16.4% (19 parties)

Ambassadeurs : Yaacov, Avi (2x), Nielsen, Poul Erik (1x), Heltberg, Jonas (1x), Ivanov, Igor V. (1x), Sturua, Zurab (1x), Martorelli, Antonio (1x), Abatino, Maurizio (1x), Kejik, Frantisek (1x)

6…Qa5 — 10.3% (12 parties)

Ambassadeurs : Genov, Petar (2x), Hoffman, Alejandro (1x), Melao, Hindemburg (1x), Kassimski, Kirill (1x), Grecescu, Gabriel-Andrei (1x), Nielsen, Jesper (1x), Medvegy, Nora Dr. (1x), Zaiatz, Elena (1x)

6…Nd4 — 5.2% (6 parties)

Ambassadeurs : Schwarz, Werner (1x), Levojoy (1x), Jovanovic, Nenad (1x), Zunic, Muzafer (1x), Richards, Mike (1x), Moriana Garcia, Jose-Manuel (1x), Meghriche, Eric (1x), Marquet, Mathieu (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…h6	6…Bxc5	6…Qa5	6…Nd4
<1800	9	67%	33%	—	—
1800-2200	33	70%	15%	6%	9%
2200-2600	46	63%	15%	20%	—
2600+	2	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	6…h6	6…Bxc5	6…Qa5	6…Nd4
1950s	1	—	—	—	—
1960s	1	—	—	—	100%
1970s	3	67%	33%	—	—
1980s	3	67%	33%	—	—
1990s	23	65%	17%	13%	—
2000s	51	67%	14%	10%	10%
2010s	26	65%	15%	15%	—
2020s	8	75%	25%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…h6	65%	75%	▲ +9.6%
6…Bxc5	15%	25%	▲ +9.6%
6…Qa5	15%	0%	▼ -15.4%
6…Nd4	0%	0%	+0.0%

Parties historiques

6…h6 — 65.5% (76 parties)

1978 — Faleg, Alberto vs Hase, Juan Carlos — 1-0 — Clarin-B Buenos Aires ARG
1978 — Faleg, Alberto vs Hase, Juan Carlos — 1-0 — olm Buenos Aires
1981 — Nogueiras Santiago, Jesus vs Sisniega Campbell, Marcel — 1/2-1/2 — Havana,Feb.21,
1981 — Nogueiras Santiago, Jesus vs Schussler, Harry — 1/2-1/2 — Bayamo
1991 — Akopian, Vladimir vs Tiviakov, Sergei — 1/2-1/2 — Mamaia wch-jr

6…Bxc5 — 16.4% (19 parties)

1975 — Ivanov, Igor V. vs Sturua, Zurab — 1-0 — Chelyabinsk RUS
1982 — Nielsen, Poul Erik vs Heltberg, Jonas — 1-0 — Copenhagen DEN
1991 — Akopian, Vladimir vs Shneider, Aleksandr — 1/2-1/2 — Moskou ch-URS
1997 — Kejik, Frantisek vs Hanus, Jan — 1/2-1/2 — Klatovy CZE
1998 — Martorelli, Antonio vs Abatino, Maurizio — 0-1 — Cutro ITA

6…Qa5 — 10.3% (12 parties)

1997 — Hoffman, Alejandro vs Melao, Hindemburg — 1-0 — Copa Itau Mercosul
1999 — Kassimski, Kirill vs Grecescu, Gabriel-Andrei — 1-0 — Eforie Nord
1999 — Nielsen, Jesper vs Medvegy, Nora Dr. — 0-1 — ?
2000 — Nestorovic, Dejan vs Genov, Petar — 1/2-1/2 — Bijeljina-Dvorovi
2002 — Zaiatz, Elena vs Saunina, Ludmila — 1-0 — Kopejsk

6…Nd4 — 5.2% (6 parties)

1966 — Schwarz, Werner vs Levojoy — 0-1 — corr
2001 — Richards, Mike vs Moriana Garcia, Jose-Manuel — 0-1 — IECG
2002 — Meghriche, Eric vs Marquet, Mathieu — 0-1 — France
2003 — Jovanovic, Nenad vs Zunic, Muzafer — 1-0 — Neum BIH
2006 — Frenzel, Lothar vs Mantovanelli, Marco — 0-1 — ?