D77c — Neo-Gruenfeld, 6.O-O c5 7.dxc5 dxc4

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c5 7.dxc5 dxc4 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Qa4 (38 % des parties) ; Na3 (Développer b1 — 30 % des parties) ; Qc2 (14 % des parties) ; Nc3 (Développer b1 — 10 % des parties) ; Ne5 (Cavalier centralisé en e5 — 5 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...Qd5 (Centraliser la dame — 24 % des parties) ; ...Qc7 (20 % des parties) ; ...c3 (Renforcer le centre — 19 % des parties) ; ...Na6 (Développer b8 — 10 % des parties) ; ...Nc6 (Développer b8 — 7 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Ouvertes	● d	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Ok (mob. 2)
Bg7		● Bg7 Ok (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	3 (● b8, ● c8, ● a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● c5-c6	● …c4-c3

Partie
1947 La Plata-New York radio m – Round 1 – Reshevsky, Samuel – 1-0 – Stahlberg, Gideon – G10 1. Nf3 d5 2. g3 Nf6 3. Bg2 g6 4. d4 Bg7 5. O-O O-O 6. c4 c5 7. dxc5 dxc4 8. Qc2 Qd5 9. Na3 Qxc5 10. Qxc4 Qxc4
1949 Trencianske Teplice – Round 8 – Kottnauer, Cenek – 1/2-1/2 – Bolbochan, J. – G47 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 c5 7. dxc5 dxc4 8. Qc2 Qd5 9. Na3 Qxc5 10. Qxc4 Qh5
1949 Venice – Round 7 – Mueller, Hans – 1/2-1/2 – Fletzer, Gino – G58 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 c5 7. dxc5 dxc4 8. Qa4 Nfd7 9. Qxc4 Qc7 10. Nc3 Qxc5
1950 Amsterdam – Round 15 – Reshevsky, Samuel – 1-0 – O'Kelly, Albéric de Galway – G150 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c5 6. d4 d5 7. dxc5 dxc4 8. Qc2 Qd5 9. Na3 Qxc5 10. Qxc4 Qh5
1950 Amsterdam ch-NED – Round 1 – Stumpers, Louis – 0-1 – Donner, Jan-Hein – G38 1. Nf3 d5 2. g3 c5 3. Bg2 g6 4. d4 Nf6 5. O-O Bg7 6. c4 O-O 7. dxc5 dxc4 8. Nc3 Qa5 9. Qd4 Nc6 10. Qxc4 Be6
1950 Dubrovnik olm – Round 13 – Johansson, Ingemar 1966 – 0-1 – Bolbochan, J. – G189 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. c4 c5 7. dxc5 dxc4 8. Qc2 Qd5 9. Nfd2 Qxc5 10. Nxc4 Nc6
1950 Dubrovnik olm – Round 6 – Kramer, Hanspeter – 0-1 – Thibaut, Georges – G87 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 c5 7. dxc5 dxc4 8. Qc2 Qd5 9. Rd1 Qxc5 10. Be3 Qc7
1950 Mar del Plata – Round 5 – Pirc, Vasja – 1/2-1/2 – Michel, Pascal – G45 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 c5 7. dxc5 dxc4 8. Na3 Ne4 9. Nxc4 Nxc5 10. Be3 Ne6
1950 Mar del Plata – Round 9 – Pirc, Vasja – 1/2-1/2 – Pilnik, Herman – G79 1. Nf3 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. c4 c5 7. dxc5 dxc4 8. Na3 c3 9. Nb5 Na6 10. Nxc3 Nxc5
1952 Helsinki olm – Round 1 – Barcza, Gedeon – 1/2-1/2 – Stoltz, Gabriel – G205 1. Nf3 d5 2. g3 Nf6 3. Bg2 g6 4. d4 Bg7 5. O-O O-O 6. c4 c5 7. dxc5 dxc4 8. Na3 c3 9. Qxd8 Rxd8 10. Nb5 Na6
1952 Hungary Ch – Round 8 – Negyesy, Gyorgy – 1-0 – Kluger, Gyula – G49 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c5 6. d4 d5 7. dxc5 dxc4 8. Na3 c3 9. bxc3 Ne4 10. Qxd8 Rxd8
1952 Rio de Janeiro – Round 15 – Bolbochan, Julio – 1-0 – Cruz, Walter – G87 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 c5 7. dxc5 dxc4 8. Nc3 Qxd1 9. Rxd1 Nc6 10. h3 h6
1952 Rio de Janeiro – Round 9 – Eliskases, Erich – 1-0 – Cruz, Walter – G52 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d5 6. O-O c5 7. dxc5 dxc4 8. Qc2 Qd5 9. Na3 Qxc5 10. Qxc4 Qxc4
1954 URS Team Ch – Round 10 – Cherepkov, Alexander V – 1-0 – Fridstein, German – G189 1. Nf3 Nf6 2. g3 d5 3. Bg2 c5 4. O-O g6 5. d4 Bg7 6. c4 O-O 7. dxc5 dxc4 8. Qa4 Qc7 9. Qxc4 Be6 10. Qh4 Qxc5
1962 Hungary – Round 16 – Bilek, Istvan – 1-0 – Liptay, Laszlo Dr. – G124 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. c4 c5 7. dxc5 dxc4 8. Qa4 Qd5 9. Na3 Qxc5 10. Qxc4 Qxc4
8. London Classic 2016 – Round 1.3 – Kramnik, Vladimir – 1-0 – Topalov, Veselin – G3 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c4 c5 7. dxc5 dxc4 8. Na3 c3 9. Nb5 cxb2 10. Bxb2 Bd7
82. Tata Steel GpA 2020 – Round 9.2 – Artemiev, Vladislav – 1/2-1/2 – Yu, Yangyi – G53 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c4 c5 7. dxc5 dxc4 8. Nc3 Nc6 9. Qa4 Qa5 10. Qxa5 Nxa5
World Blitz 2022 – Round 3.33 – Svane, Rasmus – 1/2-1/2 – Chigaev, Maksim – G150 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 c5 7. dxc5 dxc4 8. Na3 c3 9. Nb5 Na6 10. Nxc3 Nxc5

D77c —

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c5 7.dxc5 dxc4

Les coups candidats

8.Qa4 — 38.3% (44 parties)

Ambassadeurs : Tomaszewski, Kacper (2x), Bak, Istvan (1x), Liptay, Laszlo Dr. (1x), Cherepkov, Alexander V (1x), Fridstein, German (1x), Diego Alejandro Castro Ponce (1x), Acebal Muniz, Antonio (1x), Quinteros, Miguel A. (1x)

8.Na3 — 29.6% (34 parties)

Ambassadeurs : Chigaev, Maksim (3x), Anay Barche (2x), Stoltz, Gösta (2x), Pirc, Vasja (2x), Koo, Oliver T (2x), Luers, Lavas (2x), Michel, Clement Paul (1x), Negyesy, Gyorgy (1x)

8.Qc2 — 13.9% (16 parties)

Ambassadeurs : Johansson, Ingi Randver (1x), Bolbochan, Julio (1x), Eliskases, Erich (1x), Cruz, Walter (1x), Kramer, Haije (1x), Thibaut, Georges (1x), Rapaka Samuel Paul (1x), O'Kelly, Albéric de Galway (1x)

8.Nc3 — 10.4% (12 parties)

Ambassadeurs : Bolbochan, Julio (1x), Cruz, Walter (1x), Stumpers, Louis (1x), Donner, Jan-Hein (1x), Oakley, Peter James (1x), Rhodes, H. (1x), Helis, Tadeusz (1x), Kozak, Pawel (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.Qa4	8.Na3	8.Qc2	8.Nc3
<1800	6	33%	17%	—	33%
1800-2200	45	47%	18%	18%	9%
2200-2600	40	38%	40%	8%	5%
2600+	6	17%	67%	—	17%

Évolution par décennie (% des parties)

Décennie	N parties	8.Qa4	8.Na3	8.Qc2	8.Nc3
1950s	13	8%	38%	31%	23%
1960s	1	100%	—	—	—
1970s	2	100%	—	—	—
1980s	2	50%	—	50%	—
1990s	5	60%	20%	—	—
2000s	20	45%	15%	20%	10%
2010s	37	35%	35%	8%	11%
2020s	35	40%	34%	11%	9%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Qa4	35%	40%	▲ +4.9%
8.Na3	35%	34%	▼ -0.8%
8.Qc2	8%	11%	▲ +3.3%
8.Nc3	11%	9%	▼ -2.2%

Joueurs célèbres

Champions du monde dans cette position

Kramnik, Vladimir — 1 partie
Gukesh D — 1 partie

Parties historiques

8.Qa4 — 38.3% (44 parties)

1954 — Cherepkov, Alexander V vs Fridstein, German — 1-0 — Riga LAT
1962 — Bak, Istvan vs Liptay, Laszlo Dr. — 1-0 — Budapest HUN
1971 — Quinteros, Miguel A. vs Savon, Vladimir — 1/2-1/2 — Mar del Plata ARG
1977 — Fronczek, Heinrich vs Witkowski, Stefan — 1-0 — Piotrkow Trybunalski
1985 — Diego Alejandro Castro Ponce vs Acebal Muniz, Antonio — 1/2-1/2 — Preferente

8.Na3 — 29.6% (34 parties)

1950 — Pirc, Vasja vs Michel, Clement Paul — 1/2-1/2 — Mar del Plata ARG
1950 — Pirc, Vasja vs Pilnik, Herman — 1/2-1/2 — Mar del Plata ARG
1952 — Anay Barche vs Stoltz, Gösta — 1/2-1/2 — Helsinki olm
1952 — Negyesy, Gyorgy vs Kluger, Gyula — 1-0 — Hungary ch
1952 — Anay Barche vs Stoltz, Gösta — 1-0 — Stockholm izt

8.Qc2 — 13.9% (16 parties)

1950 — Johansson, Ingi Randver vs Bolbochan, Julio — 0-1 — Dubrovnik olm
1950 — Kramer, Haije vs Thibaut, Georges — 0-1 — Dubrovnik olm
1950 — Rapaka Samuel Paul vs O'Kelly, Albéric de Galway — 1-0 — Amsterdam NED
1952 — Eliskases, Erich vs Cruz, Walter — 1-0 — Rio de Janeiro BRA
1989 — Lescano, Benicio vs Guijarro, Hugo — 1-0 — ESP

8.Nc3 — 10.4% (12 parties)

1950 — Stumpers, Louis vs Donner, Jan-Hein — 0-1 — Amsterdam ch-NED
1952 — Bolbochan, Julio vs Cruz, Walter — 1-0 — Rio de Janeiro BRA
1952 — Oakley, Peter James vs Rhodes, H. — 0-1 — England
2002 — Helis, Tadeusz vs Kozak, Pawel — 1-0 — Karvina
2004 — Vucenovic, Dragomir vs Flockhart, Hugh — 1/2-1/2 — Port Erin IOM

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