E20p — Nimzo-Indian: Romanishin, 4…c5 5.Nf3 Nc6

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 c5 5.Nf3 Nc6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte f4, case forte b5, case forte e5, case forte g5, paire de fous.
Faiblesses adverses : arriéré d7, Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 4 pièces non développées (C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, menace e5, libère Bf1
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte b4, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, arriéré d7, 3 pièces non développées (C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Bg4 — Clouer Nf3
● ...d5 — Rupture
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E20p — Romanishin

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 c5 5.Nf3 Nc6

Eval: [+0.28]

Les coups candidats

6.Bg2 — 88.9% (600 parties)

Ambassadeurs : Suba, Mihai (9x), Kasparov, Garry (7x), Yudasin, Leonid (7x), Karpov, Anatoly (6x), Moiseenko, Alexander (6x), Gaprindashvili, Nona (6x), Rashkovsky, Nukhim N (5x), Drasko, Milan (5x)

6.d5 — 7.4% (50 parties)

Ambassadeurs : Miladinovic, Igor (5x), Foisor, Ovidiu-Doru (2x), Gulko, Boris (2x), Sergeev, Valdemar (2x), Barsov, Aleksei (2x), Ilyin, Igor (2x), Nickoloff, Bryon (1x), Dzera, Victor (1x)

6.dxc5 — 2.2% (15 parties)

Ambassadeurs : Novikov, Igor (2x), Pigusov, Evgeny (1x), Farago, Ivan (1x), Dely, Peter (1x), Giorgadze, Tamaz (1x), Ubilava, Elizbar (1x), Spiridonov, Nikola (1x), Issing, Peter (1x)

6.a3 — 1.2% (8 parties)

Ambassadeurs : Alhuay Grau, Dominick Fabricio (1x), Salas Romo, Julio (1x), Ingram Waterworth, Paul Anthony (1x), Wheeler, Darren P (1x), Tjiam, Dharma (1x), Timmermans, Ivo (1x), Roos, Christoph (1x), Walter, Berthold (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.Bg2	6.d5	6.dxc5	6.a3
<1800	6	100%	—	—	—
1800-2200	98	85%	9%	1%	4%
2200-2600	432	90%	6%	3%	0%
2600+	78	96%	4%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	6.Bg2	6.d5	6.dxc5	6.a3
1930s	1	100%	—	—	—
1940s	1	—	—	—	100%
1960s	1	100%	—	—	—
1970s	3	67%	—	33%	—
1980s	95	88%	7%	3%	1%
1990s	96	81%	12%	3%	1%
2000s	198	91%	6%	2%	1%
2010s	244	89%	7%	2%	1%
2020s	36	97%	3%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.Bg2	89%	97%	▲ +7.9%
6.d5	7%	3%	▼ -4.6%
6.dxc5	2%	0%	▼ -2.0%
6.a3	1%	0%	▼ -1.2%

Joueurs célèbres

Champions du monde dans cette position

Kasparov, Garry — 7 parties
Karpov, Anatoly — 6 parties
Karpov, Aleksandr — 1 partie
Carlsen, Magnus — 1 partie
Anand, Viswanathan — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

6.Bg2 — 88.9% (600 parties)

1936 — Vinuesa, Juan vs Schwartzman, Alejandro — 1/2-1/2 — Mar del Plata ARG
1968 — Liptay, Laszlo Dr. vs Dely, Peter — 1/2-1/2 — HUN
1978 — Rohland, Michael Karl vs South, Robert — 1-0 — Toronto ch-CAN - zt
1978 — Van Tilbury, Craig vs Shoumali Samir — 1-0 — Buenos Aires ARG
1982 — Farago, Ivan vs Suba, Mihai — 1/2-1/2 — Baile Herculane zt

6.d5 — 7.4% (50 parties)

1982 — Nickoloff, Bryon vs Dzera, Victor — 1-0 — Toronto CAN
1982 — Liberios, Tisef vs Foisor, Ovidiu-Doru — 0-1 — Plovdiv BUL
1984 — Gulko, Boris vs Kuzmin, Gennadi — 0-1 — Tashkent UZB
1984 — Gulko, Boris vs Kuzmin, Gennadiy — 0-1 — Tashkent UZB
1985 — Kaiser, Wolfgang vs Foisor, Ovidiu-Doru — 1/2-1/2 — Buende GER

6.dxc5 — 2.2% (15 parties)

1978 — Farago, Ivan vs Dely, Peter — 1/2-1/2 — HUN-ch Budapest HUN
1985 — Ubilava, Elizbar vs Spiridonov, Nikola — 1/2-1/2 — Varna BUL
1986 — Pigusov, Evgeny vs Novikov, Igor — 1/2-1/2 — URS-ch U20 Tallinn EST
1986 — Giorgadze, Tamaz vs Novikov, Igor — 1/2-1/2 — Lvov UKR
1994 — Priehoda, Vitezslav vs Bundrock, Thomas — 1/2-1/2 — Oberliga Ost A9394

6.a3 — 1.2% (8 parties)

1940 — Alhuay Grau, Dominick Fabricio vs Salas Romo, Julio — 1-0 — Santiago CHI
1981 — Ingram Waterworth, Paul Anthony vs Wheeler, Darren P — 1/2-1/2 — Wolverhampton
1996 — Tjiam, Dharma vs Timmermans, Ivo — 1-0 — Mondariz ESP
2000 — Roos, Christoph vs Walter, Berthold — 1/2-1/2 — Reil
2000 — Starc, Christian vs Morovic Fernandez, Ivan — 0-1 — Pula CRO

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d7
Chaînes	● f2→g3, h2→g3	● d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● b5 (2v0), ● e5 (2v1), ● g5 (2v0)	● b4 (2v0)
Cases faibles	● d4	—
Centre	● e5 (2v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 2)
Bb4		● Bb4 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	● knight c3	—
Non développées	4 (c1, 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	semi-ouvert
Ruptures	● d4-d5, ● e2-e3	● …d7-d6, ● …d7-d5, ● …e6-e5

Partie
1968 Hungary – Round 1 – Liptay, Laszlo Dr. – 1/2-1/2 – Dely, Peter – G45 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Bxc3 8. bxc3 Nxd2 9. Qxd2 d6 10. O-O O-O
2. FIDE GP 2008 – Round 12 – Grischuk, Alexander – 1/2-1/2 – Ivanchuk, Vasyl – G69 1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. d4 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Nxd2 8. Qxd2 cxd4 9. Nxd4 O-O 10. O-O Ne5
22. ECU Club Cup 2006 – Round 5 – Bareev, Evgeny – 0-1 – Grischuk, Alexander – G116 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Bxc3 8. bxc3 O-O 9. O-O Na5 10. Bf4 d5
7. World Team Championship 2010 – Round 7 – Harikrishna, Pentala – 1/2-1/2 – Amin, Bassem – G107 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 c5 5. Nf3 Nc6 6. Bg2 Qa5 7. O-O Bxc3 8. bxc3 Qxc3 9. Bf4 cxd4 10. Rc1 Qb2
7. World Team Championship 2010 – Round 8 – Grischuk, Alexander – 1/2-1/2 – Amin, Bassem – G126 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nc3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Bxc3 8. bxc3 O-O 9. O-O Na5 10. Bf4 d5
73. Tata Steel GMA 2011 – Round 5 – Nakamura, Hikaru – 1/2-1/2 – Ponomariov, Ruslan – G23 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Nxd2 8. Qxd2 cxd4 9. Nxd4 Qb6 10. Nc2 Be7
Chess Classic Rapid Final 2007 – Round 2 – Aronian, Levon – 1/2-1/2 – Anand, Viswanathan – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Bxc3 8. bxc3 O-O 9. O-O Na5 10. Bf4 d5
EU-Cup 24th 2008 – Round 6 – Radjabov, Teimour – 1/2-1/2 – Gashimov, Vugar – G66 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 c5 5. Nf3 Nc6 6. Bg2 Ne4 7. Bd2 Bxc3 8. bxc3 d6 9. O-O O-O 10. Be3 d5
Interpolis 1985 – Round 11 – Polugaevsky, Lev – 0-1 – Korchnoi, Viktor – G37 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 Qa5 7. d5 Bxc3+ 8. bxc3 Ne7 9. Qd3 exd5 10. cxd5 Nexd5
Qatar Masters Open 2015 – Round 3.8 – Mamedyarov, Shakhriyar – 1-0 – Lenderman, Aleksandr – G124 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nc3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Nxd2 8. Qxd2 cxd4 9. Nxd4 Qb6 10. e3 Ne5
Unknown 1985 – Round ? – Kasparov, Garry – 1/2-1/2 – Karpov, Anatoly – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Bxc3 8. O-O O-O 9. Be3 Nxd4 10. Nxd4 Bxd4
Unknown 1985 – Round ? – Kasparov, Garry – 1/2-1/2 – Karpov, Anatoly – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Bxc3 8. O-O O-O 9. Ne5 Rb8 10. f4 d5
World Championship 32th-KK2 1985 – Round 13 – Kasparov, Garry – 1/2-1/2 – Karpov, Anatoly – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Bxc3 8. bxc3 O-O 9. O-O f5 10. Be3 Nxc3
World Championship 32th-KK2 1985 – Round 17 – Kasparov, Garry – 1/2-1/2 – Karpov, Anatoly – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 Ne4 7. Bd2 Bxc3 8. bxc3 O-O 9. O-O Na5 10. dxc5 Qc7
World Championship 33th-KK3 1986 – Round 2 – Kasparov, Garry – 1/2-1/2 – Karpov, Anatoly – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 Nc6 6. Bg2 d5 7. cxd5 Nxd5 8. Bd2 cxd4 9. Nxd4 Nxd4 10. Nxd5 Bxd2+

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