D77k — Neo-Gruenfeld, 6.O-O dxc4 7.Na3 Nc6 8.Nxc4 Be6 9.b3

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O dxc4 7.Na3 Nc6 8.Nxc4 Be6 9.b3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité centre (2v1), case forte f4, case forte e5, case forte g5, avant-poste c4(C), paire de fous, colonne c.
Faiblesses adverses : Bg7 enfermé.
Problèmes : Bc1 enfermé, Bg2 enfermé.
Plans :
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4
● Rc — Tour sur colonne c

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : majorité aile_dame (3v2), case forte g4, case forte d5, case forte f5, Be6 actif, paire de fous, colonne d.
Faiblesses adverses : Bc1 enfermé, Bg2 enfermé.
Problèmes : Bg7 enfermé.
Plans :
● ...Bg4 — Clouer Nf3
● ...Rd — Tour sur colonne d

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

D77k — Neo-Gruenfeld

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O dxc4 7.Na3 Nc6 8.Nxc4 Be6 9.b3

Eval: [+0.52]

Les coups candidats

9…Bd5 — 67.2% (765 parties) →

Ambassadeurs : Banas, Jan (13x), Gheorghiu, Florin (11x), Unzicker, Wolfgang (5x), Nikolic, Predrag (5x), Panno, Oscar (4x), Kurajica, Bojan (4x), Gruen, Gerd-Peter (4x), Barcza, Gedeon (3x)

9…a5 — 26.3% (300 parties)

Ambassadeurs : Pribyl, Josef (11x), Konopka, Michal (6x), Ftacnik, Lubomir (6x), Szabo, Gergely-Andras-Gyula (5x), Gutman, Lev (4x), Karpatchev, Aleksandr (4x), Panno, Oscar (3x), Csom, Istvan (3x)

9…Qc8 — 4.3% (49 parties)

Ambassadeurs : Pilnik, Herman (2x), Martz, William (2x), Chen, Zimu(JS) (2x), Smyslov, Vladimir (1x), Doda, Zbigniew (1x), Zwaig, Arne (1x), Orbaan, Constant (1x), Cuellar Gacharna, Miguel (1x)

9…Nd5 — 0.6% (7 parties)

Ambassadeurs : Marin, Mihail (1x), Vidarte Morales, Arturo (1x), Corvi, Maddalena (1x), Wantiez, Fabrice (1x), Van den Cruyce, Els (1x), Reede, Arvo (1x), Vogel, Jaap (1x), Uehara, Shinpei (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9…Bd5	9…a5	9…Qc8	9…Nd5
<1800	7	100%	—	—	—
1800-2200	163	64%	18%	10%	3%
2200-2600	819	68%	28%	2%	0%
2600+	25	64%	36%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9…Bd5	9…a5	9…Qc8	9…Nd5
1940s	2	100%	—	—	—
1950s	26	54%	35%	12%	—
1960s	23	74%	13%	9%	—
1970s	72	72%	22%	6%	—
1980s	51	75%	20%	6%	—
1990s	176	66%	28%	3%	1%
2000s	381	67%	29%	2%	1%
2010s	328	68%	23%	5%	1%
2020s	80	59%	32%	6%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9…Bd5	68%	59%	▼ -9.2%
9…a5	23%	32%	▲ +9.6%
9…Qc8	5%	6%	▲ +1.1%
9…Nd5	1%	1%	+0.3%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 1 partie
Karpov, Aleksandr — 1 partie
Karpov, Anatoly — 1 partie
Carlsen, Magnus — 1 partie

Parties historiques

9…Bd5 — 67.2% (765 parties)

1949 — Rellstab, Ludwig vs Heinicke, Herbert — 1-0 — Oldenburg GER
1949 — Mueller, Hans vs Sajtar, Jaroslav — 1/2-1/2 — CZE-AUT Prague CZE
1950 — Agustsson, Gudmundur vs Kinnmark, Olof — 1/2-1/2 — Reykjavik ISL
1951 — Nuernberg, Friedrich vs Heinicke, Herbert — 0-1 — Augsburg GER
1954 — Vaitonis, Povilas vs Milev, Zdravko — 1/2-1/2 — Amsterdam NED

9…a5 — 26.3% (300 parties)

1951 — Popov, Vesselin vs Plater, Kazimierz — 1/2-1/2 — Sopot
1952 — Rubinstein, Patt vs Martello Panno, David — 0-1 — Buenos Aires ARG
1952 — Bojta vs Lopez Molnar, Aidan Mikael — 1-0 — Budapest HUN
1952 — Benko, Pal vs Kottnauer, Cenek — 1-0 — Budapest HUN
1957 — Barcza, Gedeon vs Keres, Paul — 1-0 — Tallinn EST

9…Qc8 — 4.3% (49 parties)

1956 — Smyslov, Vladimir vs Pilnik, Herman — 1-0 — Amsterdam NED
1956 — Orbaan, Constant vs Pilnik, Herman — 0-1 — Beverwijk NED
1956 — Cuellar Gacharna, Miguel vs Filip, Marius Liviu — 1/2-1/2 — Moscow RUS
1966 — Doda, Zbigniew vs Zwaig, Arne — 1-0 — Havana CUB
1969 — Alvarez Silva, Carlos Marcel vs Martello Panno, David — 0-1 — Mar del Plata ARG

9…Nd5 — 0.6% (7 parties)

1995 — Marin, Mihail vs Vidarte Morales, Arturo — 1/2-1/2 — Manresa
2000 — Corvi, Maddalena vs Wantiez, Fabrice — 1-0 — Leopoldsburg BEL
2007 — Van den Cruyce, Els vs Reede, Arvo — 1-0 — LSS
2011 — Vogel, Jaap vs Uehara, Shinpei — 1-0 — Cappelle la Grande FRA
2012 — Levay, Sorin vs Moldovan, Rares — 1-0 — Arad ROU

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● a2→b3, f2→g3, h2→g3	● f7→g6, h7→g6
Passés	—	—
Majorité	● centre 2v1	● aile_dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● e5 (3v1), ● g5 (2v0)	● g4 (2v0), ● d5 (3v0), ● f5 (2v0)
Cases faibles	● d4	—
Centre	● e5 (3v1)	● d5 (3v0), ● e4 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 7)
Bg2	● Bg2 Enfermé (mob. 2)
Be6		● Be6 Actif (mob. 7)
Bg7		● Bg7 Enfermé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	1 (a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d4-d5, ● e2-e3	—

Partie
1951 Sopot – Round 12 – Popov, Vesselin – 1/2-1/2 – Plater, Kazimierz – G73 1. Nf3 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 d5 5. O-O O-O 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 a5 10. Bb2 a4
1952 Budapest – Round 5 – Benko, Pal – 1-0 – Kottnauer, Cenek – G53 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. c4 O-O 5. O-O d5 6. d4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 a5 10. Bb2 Bd5
1956 Candidats Tournament – Round 18 – Smyslov, Vladimir – 1-0 – Pilnik, Herman – G87 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 Qc8 10. Re1 Rd8
1956 Hoogovens – Round 3 – Orbaan, Constant – 0-1 – Pilnik, Herman – G17 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O d5 5. d4 O-O 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 Qc8 10. Re1 Rd8
1956 Moscow olm prel – Round 8 – Cuellar Gacharna, Miguel – 1/2-1/2 – Filip, Marius Liviu – G261 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 Qc8 10. Nce5 Nxe5
1957 Leningrad – Round 1 – Czerepkow – 1-0 – Portisch, Lajos – G27 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 a5 10. Bb2 a4
1957 Mar del Plata – Round 4 – Cuellar Gacharna, Miguel – 0-1 – Panno, Oscar – G50 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d4 d5 5. c4 dxc4 6. O-O O-O 7. Na3 Nc6 8. Nxc4 Be6 9. b3 a5 10. Bb2 Bd5
1958 HUN Ch Budapest HUN – Round 3 – Forintos, Gyozo V – 1-0 – Kluger, Gyula – G17 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 a5 10. Bb2 Bd5
1966 La Habana olm prel – Round 3 – Doda, Zbigniew – 1-0 – Zwaig, Arne – G119 1. Nf3 g6 2. d4 Nf6 3. c4 Bg7 4. g3 O-O 5. Bg2 d5 6. O-O dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 Qc8 10. Bb2 Rd8
1967 Skopje – Round 1 – Ilievski, Borce – 1/2-1/2 – Fischer, Robert J – G16 1. Nf3 g6 2. g3 Bg7 3. d4 Nf6 4. Bg2 O-O 5. O-O d5 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 a5 10. Bb2 a4
1968 Skopje/Ohrid – Round 3 – Portisch, Lajos – 1-0 – Ilievski, Dimitar – G27 1. Nf3 Nf6 2. g3 d5 3. Bg2 g6 4. O-O Bg7 5. d4 O-O 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 a5 10. Bb2 a4
1975 URS Team Ch – Round 3 – Petrosian, Tigran V. – 1/2-1/2 – Beliavsky, Alexander G – G578 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 dxc4 7. Na3 Nc6 8. Nxc4 Be6 9. b3 a5 10. Bb2 Bd5