Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	● a2	—
Arriérés	—	—
Chaînes	● c3→d4	● f7→g6, h7→g6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b4 (2v0), ● c5 (2v0)	—
Cases faibles	—	—
Centre	—	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● b	● d

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 5)
Ba3	● Ba3 Actif (mob. 6)
Bg7		● Bg7 Actif (mob. 5)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	4 (● g1, ● 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	mobile
Ruptures	—	● …c7-c5, ● …e7-e5, ● …f7-f5

D85d — Gruenfeld: Exchange, 7.Ba3

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Ba3 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Nf3 (Développer g1 — 50 % des parties) ; Bc4 (Fou actif (mobilité 9), Développer f1 — 31 % des parties) ; Qb3 (Prépare O-O-O — 10 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...O-O (Mettre le roi en sécurité, connecter les tours — 57 % des parties) ; ...Nd7 (Développer b8 — 38 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1924 Moskou ch-URS – Round 1 – Levenfish, Grigory – 1-0 – Rozental, Sasha Valentin – G1 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Qb3 b6 9. Bd3 c5 10. Ne2 Ba6
1925 BCF Ch 18th – Round 4 – Atkins, Henry Ernest – 1-0 – Price, Hubert E – G14 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Bd3 Nd7 9. Ne2 c5 10. O-O b6
1925 Leningrad ch-URS – Round 13 – Sozin, Veniamin – 0-1 – Romanovsky, Pjotr – G25 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Bd3 Nd7 9. Ne2 c5 10. O-O b6
1925 Marienbad – Round 10 – Michell, Reginald – 1/2-1/2 – De La Torre Huertas, Carlos – G61 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Qb3 Nd7 9. Nf3 c5 10. Rd1 Qa5
1936 Muenchen ol – Round 17 – Mezgailis, V. – 0-1 – Roedl, Ludwig – G32 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 Nd7 8. Qb3 O-O 9. Rd1 c5 10. d5 Qa5
1948 JUG Ch – Round 13 – Vukovic, Sava – 1-0 – Subaric, Mladen – G57 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Bc4 b6 9. Qb3 Nc6 10. Qc2 Na5
1950 ITA Ch – Round 8 – Ceccato, Vittorio – 1/2-1/2 – Paoli, Enrico – G9 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Bc4 Nd7 9. Ne2 c5 10. O-O Qa5
1950 Mar del Plata – Round 1 – Gligorić, Svetozar – 1/2-1/2 – Pilnik, Herman – G7 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Nf3 b6 9. Be2 c5 10. O-O Ba6
1950 Sorrento ch ITA – Round 1 – Porreca, Giorgio – 1-0 – Nestler, Vincenzo – G1 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Bc4 Nd7 9. Ne2 c5 10. O-O Qc7
1951 Hastings5152 – Round 4 – Schmid, Leo – 1/2-1/2 – Donner, H. – G15 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. d4 g6 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Bc4 Nd7 9. Ne2 c5 10. O-O cxd4
1951 Marianske Lazne zt – Round 1 – Heidenfeld, Wolfgang – 1-0 – Tsvetkov, Alexandar K – G48 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 Nd7 8. Qb3 c5 9. Bc4 O-O 10. Nf3 Rb8
1953 AUS Ch – Round 7 – Kuszelansky Michael – 1/2-1/2 – Koshnitsky, Gregory – G10 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 O-O 8. Bc4 Nc6 9. Ne2 Na5 10. Bd3 b6
1960 Buenos Aires – Round 5 – Evans, Larry M – 1/2-1/2 – Korchnoi, Viktor – G63 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 Nd7 8. Nf3 c5 9. Qb3 O-O 10. Bd3 Qc7
Corus 2002 – Round 10 – Gurevich, Mikhail – 1-0 – Kasimdzhanov, Rustam – G64 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 Nd7 8. Nf3 c5 9. Qb3 O-O 10. Bd3 cxd4
FIDE WCh KO 2001 – Round 3.2 – Milov, Vadim – 0-1 – Svidler, Peter – G268 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 Nd7 8. Nf3 c5 9. Bc4 cxd4 10. Qb3 O-O
World Blitz 2016 – Round 7.38 – Hirneise, Tobias – 0-1 – Volokitin, Andrei – G287 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 Nd7 8. Nf3 c5 9. Qb3 O-O 10. Bc4 a6
World Blitz Final 2012 – Round 12 – Le, Quang Liem – 1-0 – Ganza Svidler , Pedro – G89 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 Nd7 8. Bc4 c5 9. Qb3 O-O 10. Nf3 cxd4

D85d — Exchange (1924)

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Ba3

Les coups candidats

7…O-O — 57.1% (228 parties)

Ambassadeurs : Hvenekilde, Jorgen (7x), Noble, Mark Frederick (4x), Ipatov, Alexander (3x), Leino, Pauli (3x), Porreca, Giorgio (2x), Donner, Jan-Hein (2x), Bailo Remacha, Santiago (2x), Stalmach, Richard (2x)

7…Nd7 — 37.8% (151 parties)

Ambassadeurs : Sharevich, Anna (3x), Noble, Mark Frederick (3x), Hvenekilde, Jorgen (2x), Bator, Zbigniew (2x), Milov, Vadim (2x), Mikhalevski, Victor (2x), Thys, Hugo (2x), Hund, Juliane (1x)

7…b6 — 3.0% (12 parties)

Ambassadeurs : Bahlke, Wolfgang (1x), Paul S M (1x), Granda Zuniga, Julio E (1x), Sion Castro, Marcelino (1x), Tutulan, Mihaela (1x), Baidaus, Adrian (1x), Cuello Borau, Jorge (1x), Valiente Gimenez, Jose Luis (1x)

7…Nc6 — 0.8% (3 parties)

Ambassadeurs : Ivanov, Stojan (1x), Delchev, Janko (1x), Asingura Noble Graham (1x), Yangibayev, Rustam (1x), Gachon, Maxence (1x), Daures, Florian (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7…O-O	7…Nd7	7…b6	7…Nc6
<1800	26	62%	35%	—	4%
1800-2200	166	61%	31%	5%	—
2200-2600	119	55%	43%	3%	—
2600+	10	40%	60%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7…O-O	7…Nd7	7…b6	7…Nc6
1950s	16	88%	12%	—	—
1960s	4	25%	75%	—	—
1970s	15	47%	53%	—	—
1980s	22	41%	59%	—	—
1990s	47	64%	30%	6%	—
2000s	139	62%	32%	4%	1%
2010s	142	53%	41%	3%	1%
2020s	14	43%	57%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…O-O	53%	43%	▼ -10.0%
7…Nd7	41%	57%	▲ +16.3%
7…b6	3%	0%	▼ -2.8%
7…Nc6	1%	0%	▼ -0.7%

Parties historiques

7…O-O — 57.1% (228 parties)

1950 — Ceccato, Vittorio vs Paoli, Enrico — 1/2-1/2 — Sorrento
1950 — Porreca, Alessio vs Nestler, Daniel — 1-0 — Sorrento ch ITA
1950 — Porreca, Giorgio vs Nestler, Vincenzo — 1-0 — Sorrento ch ITA
1950 — Gligoric, Sofija vs Pilnik, Herman — 1/2-1/2 — Mar del Plata ARG
1951 — Mandel, Walter vs Kuehn, Karsten — 0-1 — Berlin GER

7…Nd7 — 37.8% (151 parties)

1951 — Heidenfeld, Wolfgang vs Tsvetkov, Aleksandar — 1-0 — Marianske Lazne zt
1952 — Lima, Edmundo vs German, Eugenio — 1/2-1/2 — Sao Paulo ch BRA
1960 — Evans, Larry vs Korchnoi, Viktor — 1/2-1/2 — Buenos Aires ARG
1962 — Polak, Radim vs Ciesla, Stanislaw — 1/2-1/2 — corr ch4-POL
1964 — Hund, Juliane vs Sauermann, Wilfried — 0-1 — cr.

7…b6 — 3.0% (12 parties)

1996 — Bahlke, Wolfgang vs Paul S M — 0-1 — GER
1997 — Granda Zuniga, Julio E vs Sion Castro, Marcelino — 1/2-1/2 — Leon ESP
1998 — Tutulan, Mihaela vs Baidaus, Adrian — 1/2-1/2 — Eforie Nord
2005 — Vrskovy, Rastislav vs Padysak, Tomas — 1-0 — Vrutky
2005 — Kosov, Igor vs Kosarev, Dmitry — 0-1 — St Petersburg RUS

7…Nc6 — 0.8% (3 parties)

2001 — Ivanov, Stojan vs Delchev, Janko — 1/2-1/2 — Pamporovo BUL
2007 — Asingura Noble Graham vs Yangibayev, Rustam — 1-0 — ?
2014 — Gachon, Maxence vs Daures, Florian — 1-0 — Saint Affrique FRA

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