E20s — Nimzo-Indian: Romanishin, 6.Nxd4

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 c5 5.Nf3 cxd4 6.Nxd4 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité aile_dame (3v2), case forte f4, case forte b5, paire de fous, colonne d.
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
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : majorité centre (2v1), Bb4 actif, paire de fous, colonne c.
Faiblesses adverses : Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, arriéré d7, 4 pièces non développées (B8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Nc6 — Développer Nb8
● ...d5 — Rupture
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E20s — Romanishin

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 c5 5.Nf3 cxd4 6.Nxd4

Eval: [+0.19]

Les coups candidats

6…O-O — 54.1% (1539 parties) →

Ambassadeurs : Nielsen, Peter Heine (15x), Romanishin, Oleg M (12x), Suba, Mihai (12x), Moiseenko, Alexander (11x), Portisch, Lajos (9x), Ward, Chris G (9x), Van Wely, Loek (9x), Bacrot, Etienne (9x)

6…Ne4 — 36.4% (1035 parties)

Ambassadeurs : Moiseenko, Alexander (15x), Potapov, Alexander (10x), Ftacnik, Lubomir (10x), Ward, Chris G (7x), Gyimesi, Zoltan (7x), Gaprindashvili, Nona (6x), Ivanisevic, Ivan (6x), Sher, Miron (5x)

6…Nc6 — 3.8% (109 parties) →

Ambassadeurs : Tiller, Bjorn (2x), De Carbonnel, Heinz (2x), Farago, Sandor (2x), Pedersen, Steffen (2x), Psakhis, Lev (2x), Kachiani-Gersinska, Ketino (2x), Borvander, Tom (2x), Nygren, David (2x)

6…Qc7 — 2.1% (61 parties)

Ambassadeurs : Csom, Istvan (4x), Arkell, Keith C (2x), Tukmakov, Vladimir B (2x), Gorelov, Sergey G (1x), Yermolinsky, Alex (1x), Popov, Nikolay (1x), Cseshkovsky, Vitaly (1x), de Wall, Robert (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…O-O	6…Ne4	6…Nc6	6…Qc7
<1800	22	64%	23%	5%	—
1800-2200	359	58%	26%	7%	4%
2200-2600	1894	53%	39%	3%	2%
2600+	230	59%	38%	—	2%

Évolution par décennie (% des parties)

Décennie	N parties	6…O-O	6…Ne4	6…Nc6	6…Qc7
1940s	1	—	100%	—	—
1960s	9	44%	11%	22%	—
1970s	113	18%	65%	7%	4%
1980s	446	60%	31%	3%	2%
1990s	568	62%	28%	5%	2%
2000s	897	52%	40%	3%	1%
2010s	714	53%	38%	4%	3%
2020s	97	54%	36%	1%	4%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…O-O	53%	54%	▲ +1.1%
6…Ne4	38%	36%	▼ -1.6%
6…Nc6	4%	1%	▼ -2.9%
6…Qc7	3%	4%	▲ +1.3%

Joueurs célèbres

Champions du monde dans cette position

Kasparov, Garry — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Anand, Viswanathan — 5 parties
Tal, Mikhail — 3 parties
Karpov, Anatoly — 3 parties
Karpov, Aleksandr — 3 parties
Ju, Wenjun — 2 parties
Smyslov, Vladimir — 1 partie

Parties historiques

6…O-O — 54.1% (1539 parties)

1961 — Schmid, Lothar vs Clarke, Peter H — 1/2-1/2 — Neuhausen
1965 — Liebisch, Dieter vs Bruentrup, Dieter — 0-1 — Bourgas BUL
1967 — Hort, Vlastimil vs Cruz Cuesta, Octavio Augusto — 1-0 — Havana CUB
1967 — Sokolov, Vladimir vs Forintos, Gyozo V — 1/2-1/2 — Liberation Belgrade YUG
1971 — Keene, Raymond D vs Botterill, George S. — 1/2-1/2 — Oxford, Christ Church

6…Ne4 — 36.4% (1035 parties)

1947 — Carvalho, Flavio vs Eliskases, Erich — 0-1 — Sao Paulo BRA
1968 — De Carbonnel, Heinz vs Stern, David — 1-0 — corr Wch6
1971 — Bagirov, Vladimir vs Kogan, Boris M — 1/2-1/2 — Rostov on Don
1972 — Spacek, Petr vs Martin Gonzalez, Angel — 1-0 — Groningen NED
1972 — Cood Schwartz, Carlos vs Nebolsin Valery — 0-1 — Odessa UKR

6…Nc6 — 3.8% (109 parties)

1960 — Holmes, Richard Frank vs Tanfield, G. — 0-1 — Paignton
1968 — Snyder, Robert M vs Kaufman, Lawrence — 1/2-1/2 — USA op Aspen
1974 — De Potter, Jurgen vs Samsa, Greg — 1-0 — MH-P Southern
1975 — De Carbonnel, Heinz vs Siklos S — 1-0 — ?
1975 — Radev, Nikola vs Nun, Josef — 1/2-1/2 — Decin CZE

6…Qc7 — 2.1% (61 parties)

1970 — de Wall, Robert vs Bishop, Steve — 1-0 — Wichita Falls
1977 — Popov, Nikolay vs Cseshkovsky, Vitaly — 0-1 — Erevan ARM
1977 — Tukmakov, Vladimir B vs Timoscenko, Gennadij — 1/2-1/2 — USSR
1978 — Lombardy, William J vs Csom, Istvan — 1/2-1/2 — Buenos Aires ARG
1980 — Hess, Ralf E. vs Neumann Feliu, Rodrigo — 1-0 — GER-N chT 7980

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d7
Chaînes	● f2→g3, h2→g3	● d7→e6, f7→e6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● b5 (3v0)	—
Cases faibles	—	—
Centre	● d4 (1v0)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 2)
Bb4		● Bb4 Actif (mob. 7)
Bc8		● Bc8 Non développé (mob. 0)
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	semi-ouvert
Ruptures	● c4-c5, ● e2-e3, ● f2-f3	● …d7-d6, ● …d7-d5, ● …e6-e5

Partie
1. GRENKE Chess Classic 2013 – Round 2.3 – Fridman, Daniel – 1/2-1/2 – Meier, Georg – G5 1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. d4 cxd4 5. Nxd4 Bb4 6. g3 Ne4 7. Qd3 Bxc3+ 8. bxc3 Nc5 9. Qe3 b6 10. Bg2 Bb7
22. ECU Club Cup 2006 – Round 3 – Bareev, Evgeny – 0-1 – Nyback, Tomi – G50 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Bxc3+ 8. bxc3 Nc5 9. Qf3 O-O 10. Bg2 d6
73. Tata Steel GMA 2011 – Round 4 – Giri, Anish – 1/2-1/2 – Nakamura, Hikaru – G17 1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 Bb4+ 6. Nc3 Ne4 7. Qd3 Nxc3 8. bxc3 Be7 9. Nb5 Nc6 10. Bf4 e5
Amber Blindfold 2007 – Round 4 – Kramnik, Vladimir – 1-0 – Anand, Viswanathan – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Bxc3+ 8. bxc3 Nc5 9. Qf3 d6 10. Bg2 e5
Amber-blindfold 20th 2011 – Round 3 – Grischuk, Alexander – 1/2-1/2 – Karjakin, Sergey – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Nxc3 8. bxc3 Be7 9. Bg2 O-O 10. O-O d6
Amber-blindfold 20th 2011 – Round 5 – Anand, Viswanathan – 1/2-1/2 – Karjakin, Sergey – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Nxc3 8. bxc3 Be7 9. Bg2 Nc6 10. Nb5 O-O
Amber-rapid 20th 2011 – Round 10 – Nakamura, Hikaru – 1/2-1/2 – Karjakin, Sergey – G28 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Nxc3 8. bxc3 Be7 9. Bf4 Nc6 10. Bg2 O-O
Corus A 2007 – Round 6 – Topalov, Veselin – 1/2-1/2 – Navara, David – G39 1. Nf3 Nf6 2. c4 c5 3. d4 cxd4 4. Nxd4 e6 5. g3 Bb4+ 6. Nc3 Ne4 7. Qd3 Bxc3+ 8. bxc3 Nc5 9. Qf3 d6 10. Bg2 Nbd7
Corus A 2010 – Round 9 – Nakamura, Hikaru – 0-1 – Karjakin, Sergey – G56 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Nxc3 8. bxc3 Be7 9. Bg2 O-O 10. O-O d6
EU Team Ch 1980 – Round 3 – Ribli, Zoltan – 0-1 – Tringov, Georgi P – G8 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. d4 cxd4 5. Nxd4 Bb4 6. g3 Ne4 7. Qd3 Qa5 8. Nb3 Nxc3 9. Bd2 Ne4 10. Qxe4 Bxd2+
FIDE GP 2008 – Round 3 – Cheparinov, Ivan – 0-1 – Bacrot, Etienne – G16 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Qa5 8. Nb3 Nxc3 9. Bd2 Ne4 10. Qxe4 Bxd2+
FIDE GP 2010 – Round 11 – Ponomariov, Ruslan – 1-0 – Gashimov, Vugar – G66 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. g3 cxd4 5. Nxd4 Bb4+ 6. Nc3 Ne4 7. Qd3 Nxc3 8. bxc3 Be7 9. Bf4 d6 10. Nb5 e5
GCT Blitz YourNextMove 2016 – Round 6.4 – Carlsen, Magnus – 0-1 – Caruana, Fabiano – G29 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qc2 Qa5 8. Bg2 Nxc3 9. O-O Nc6 10. bxc3 Bxc3
Hoogovens Blitz 1999 – Round 8 – Kasparov, Garry – 1/2-1/2 – Kramnik, Vladimir – G25 1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Bb4 6. g3 d5 7. cxd5 Nxd5 8. Bd2 O-O 9. Bg2 Bxc3 10. bxc3 e5
It 2005 – Round 9 – Bacrot, Etienne – 1-0 – Kramnik, Vladimir – G23 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Bxc3+ 8. bxc3 Nc5 9. Qf3 d6 10. Bg2 Bd7
It Phillips & Drew Kings 1980 – Round 12 – Stean, Michael F – 1-0 – Timman, Jan H – G3 1. Nf3 Nf6 2. d4 e6 3. c4 c5 4. Nc3 cxd4 5. Nxd4 Bb4 6. g3 Ne4 7. Qd3 Nxc3 8. bxc3 Be7 9. Nb5 Na6 10. Bf4 d5
Masters 2000 – Round 14 – Van Wely, Loek – 1/2-1/2 – Adams, Michael – G53 1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. d4 cxd4 5. Nxd4 Bb4 6. g3 Ne4 7. Qd3 Bxc3+ 8. bxc3 Nc5 9. Qe3 b6 10. Bg2 Bb7
Olympiad 2002 – Round 6 – Bacrot, Etienne – 1/2-1/2 – Kulaots, Kaido – G179 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Bxc3+ 8. bxc3 Nc5 9. Qf3 Nc6 10. Bf4 O-O
Phillips&Drew 1980 – Round 12 – Stean, Michael F – 1-0 – Timman, Jan H – G32 1. Nf3 Nf6 2. d4 e6 3. c4 c5 4. Nc3 cxd4 5. Nxd4 Bb4 6. g3 Ne4 7. Qd3 Nxc3 8. bxc3 Be7 9. Nb5 Na6 10. Bf4 d5
Tal Memorial 2010 – Round 2 – Mamedyarov, Shakhriyar – 1/2-1/2 – Karjakin, Sergey – G6 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Nxc3 8. bxc3 Be7 9. Bg2 O-O 10. O-O d6
TCh-RUS 2008 – Round 7 – Radjabov, Teimour – 1/2-1/2 – Gashimov, Vugar – G182 1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. Nc3 cxd4 5. Nxd4 Bb4 6. g3 Ne4 7. Qc2 Nxc3 8. bxc3 Be7 9. Bg2 O-O 10. O-O Qc7
Turin ol (Men) 37th 2006 – Round 10 – Ftacnik, Lubomir – 1/2-1/2 – Gyimesi, Zoltan – G131 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Bxc3+ 8. bxc3 Nc5 9. Qf3 d6 10. Bg2 Nbd7
World Rapid 2021 – Round 5.51 – Sargsyan, Shant – 1-0 – Ghaem Maghami, Ehsan – G299 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. Nc3 cxd4 5. Nxd4 Bb4 6. g3 Ne4 7. Qc2 Nxc3 8. bxc3 Be7 9. Bg2 Qc7 10. Nb5 Qxc4
XXV SuperGM 2008 – Round 1 – Topalov, Veselin – 1-0 – Aronian, Levon – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 Ne4 7. Qd3 Bxc3+ 8. bxc3 Nc5 9. Qf3 d6 10. Bg2 e5

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