B91d — Sicilian: Najdorf, 6.g3 Nc6

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 Nc6 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Bg2 (Fianchetto, fou sur la grande diagonale — 91 % des parties) ; Nde2 (3 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...Bd7 (Fou actif (mobilité 5), Développer c8 — 48 % des parties) ; ...Bg4 (Fou actif (mobilité 9), Développer c8 — 13 % des parties) ; ...e6 (Solidifier le centre, libérer le fou — 10 % des parties) ; ...Nxd4 (Cavalier centralisé en d4 — 8 % des parties) ; ...e5 (Occuper le centre — 6 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● b7→a6, e7→d6
Passés	—	—
Majorité	● aile dame 3v2	—

Cases

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

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 7)
Bc8		● Bc8 Non développé (mob. 5)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (● c1, ● f1, ● a1, ● h1)	4 (● c8, ● f8, ● 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	● e4-e5	● …d6-d5

Partie
1939 Margate – Round 2 – Wheatcroft, George – 0-1 – Bellod Thomas, Gonzalo – G12 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 Nc6 7. Bg2 Bg4 8. f3 Bd7 9. Be3 g6 10. O-O Bg7
1950 Hungary – Round 1 – Balogh, Janos – 0-1 – Füster, Géza – G51 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 Nc6 7. Bg2 Bd7 8. O-O Nxd4 9. Qxd4 Bc6 10. Bg5 e6
1950 Hungary – Round 1 – Sebestyen, Balazs – 1/2-1/2 – Szabo, Ladislav – G52 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 Nc6 7. Bg2 Bd7 8. O-O g6 9. Nd5 Bg7 10. Nxf6+ Bxf6
1951 YUG Ch 6th – Round 15 – Matanovic, Aleksandar – 1-0 – Janosevic, Dragoljub – G86 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 a6 7. Bg2 Bg4 8. Nxc6 bxc6 9. Qd3 e5 10. O-O Be7
1952 Miedzyzdroje – Round 16 – Pytlakowski, Andrzej – 1/2-1/2 – Milev, Zdravko – G103 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 Nc6 7. Bg2 Nxd4 8. Qxd4 e5 9. Qd3 Be6 10. O-O Rc8
1954 Kiev ch-URS – Round 1 – Ragozin, Viacheslav – 1/2-1/2 – Ilivitsky, Georgy A – G95 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 Nc6 7. Bg2 Nxd4 8. Qxd4 e5 9. Qd3 Be7 10. O-O O-O
1954 Mar del Plata/B.Aires zt it-17 – Round 10 – Pilnik, Herman – 1/2-1/2 – Sanguinetti Lopez, Jose Pablo – G8 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 Nc6 7. Bg2 Bg4 8. Nxc6 bxc6 9. Qd3 Qc8 10. h3 Be6
1959 Kragujevac ch14-YUG – Round 1 – Vukovic, Sara – 1/2-1/2 – Bertok, Mario Jr. – G64 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 Nc6 7. Bg2 Bd7 8. O-O g6 9. b3 Bg7 10. Bb2 Nxd4

B91d — Najdorf (1939)

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 Nc6

Les coups candidats

7.Bg2 — 91.4% (339 parties)

Ambassadeurs : De Firmian, Nick (4x), Kagan, Shimon (3x), Kudrin, Sergey (3x), Spangenberg, Hugo (3x), Lee, Peter N (2x), Estremera Panos, Sergio (2x), Rudnicka, Ewa (2x), Shkuran, Danylo (2x)

7.Nde2 — 3.0% (11 parties)

Ambassadeurs : Mach, Petr (1x), Asan, Jeppy Tewelu (1x), Rutkowska, Mariola (1x), Zawadzka, Beata (1x), Ostertag, Galina (1x), Arutiunova, Yulia (1x), Alfarroba, Mathieu (1x), Ribeiro, Romain (1x)

7.Nb3 — 1.6% (6 parties)

Ambassadeurs : Mrsevic, Miroslav (1x), Micic, Snezana (1x), Stroh, Daniel (1x), Vilarnau, Enrique (1x), Damljanovic, Branko (1x), Gunnarsson, Jon Viktor (1x), Kabarukhin, Andrey (1x), Ivanov, Andrew (1x)

7.Nxc6 — 1.3% (5 parties)

Ambassadeurs : Vasiukov, Evgeni (1x), Savon, Vladimir (1x), Locateli, Lucas (1x), Belaid, Sales (1x), Piper, Stefan (1x), Adegoriola Moradeyo (1x), Maris, Io (1x), Chourdakis, Aristofanis (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.Bg2	7.Nde2	7.Nb3	7.Nxc6
<1800	25	80%	4%	4%	4%
1800-2200	145	92%	3%	1%	1%
2200-2600	148	93%	3%	3%	1%
2600+	10	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7.Bg2	7.Nde2	7.Nb3	7.Nxc6
1950s	10	100%	—	—	—
1960s	8	100%	—	—	—
1970s	4	100%	—	—	—
1980s	17	82%	—	6%	—
1990s	68	93%	3%	—	3%
2000s	116	88%	3%	3%	1%
2010s	121	93%	4%	1%	—
2020s	27	93%	—	—	7%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.Bg2	93%	93%	▼ -0.8%
7.Nde2	4%	0%	▼ -4.1%
7.Nb3	1%	0%	▼ -0.8%
7.Nxc6	0%	7%	▲ +7.4%

Parties historiques

7.Bg2 — 91.4% (339 parties)

1950 — Balogh, Janos vs Füster, Géza — 0-1 — Budapest HUN
1950 — Enevoldsen, Jens vs Haggqvist Bjorn — 1/2-1/2 — Jonkoping
1950 — Sebestyen, Balazs vs Szabo, Laszlo — 1/2-1/2 — Budapest HUN
1951 — Matanovic, Aleksandar vs Janosevic, Dragoljub — 1-0 — Ljubljana
1952 — Pytlakowski, Andrzej vs Milev, Zdravko — 1/2-1/2 — Miedzyzdroje

7.Nde2 — 3.0% (11 parties)

1993 — Mach, Petr vs Asan, Jeppy Tewelu — 0-1 — Prebor CSS H12 Plzen
1998 — Rutkowska, Mariola vs Zawadzka, Beata — 1-0 — Czestochowa
2001 — Ostertag, Galina vs Arutiunova, Yulia — 0-1 — Rybinsk
2002 — Alfarroba, Mathieu vs Ribeiro, Romain — 0-1 — France
2008 — Janev, Evgeni vs Videnova-Kuljasevic, Iva — 0-1 — Sunny Beach BUL

7.Nb3 — 1.6% (6 parties)

1987 — Mrsevic, Miroslav vs Micic, Snezana — 1-0 — Bela Crkva
2003 — Stroh, Daniel vs Vilarnau, Enrique — 1/2-1/2 — Eupen BEL
2006 — Cubas, Jose vs Stohl, Igor — 1/2-1/2 — Turin ITA
2007 — Kabarukhin, Andrey vs Ivanov, Andrew — 1/2-1/2 — Volgodonsk
2008 — Damljanovic, Branko vs Gunnarsson, Jon Viktor — 0-1 — Obrenovac SRB

7.Nxc6 — 1.3% (5 parties)

1994 — Vasiukov, Evgeni vs Savon, Vladimir — 1/2-1/2 — Tiraspol,MDA
1998 — Locateli, Lucas vs Belaid, Sales — 0-1 — Porto Belo
2006 — Piper, Stefan vs Adegoriola Moradeyo — 0-1 — ?
2020 — Maris, Io vs Chourdakis, Aristofanis — 1-0 — Irakleio GRE
2022 — Kovchan, Alexander vs Gungl, Theo — 1/2-1/2 — Novi Sad SRB