B91k — Sicilian: Najdorf, 6.g3 e5 7.Nde2 Nbd7

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nde2 Nbd7 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Bg2 (Fianchetto, fou sur la grande diagonale — 61 % des parties) ; a4 (38 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...b5 (Expansion aile dame — 47 % des parties) ; ...b6 (Préparer le fianchetto — 32 % des parties) ; ...Be7 (Développer f8 — 18 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d6
Chaînes	● f2→g3, h2→g3	● d6→e5, b7→a6
Passés	—	—
Majorité	● aile dame 3v2	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (3v1)	● c5 (2v0)
Cases faibles	—	—
Centre	● d4 (2v1), ● d5 (3v1)	● 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. 2)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 1)
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	fermé
Ruptures	● f2-f4	● …d6-d5

Partie
1951 Marianske Lazne zt – Round 1 – Benko, Pal – 1/2-1/2 – Sajtar, Jaroslav – G55 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. Bh3 Be7 9. Bg5 O-O 10. O-O b5
1951 World chJ U20 1st – Round 4.3 – Olafsson, Fridrik – 1-0 – Eikrem, Arnold – G11 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. Bg2 b5 9. O-O Bb7 10. a4 b4
1952 Moskou ch-URS – Round 1 – Kan, Ilya A – 1/2-1/2 – Moiseev, Oleg – G100 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. a4 b6 9. Bg2 Bb7 10. O-O Be7
1953 URS Team Ch – Round 1 – Lipnitsky, Isaac – 1-0 – Furman, Slavomir – G9 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. a4 b6 9. Bg2 Bb7 10. O-O Be7
1955 EU-Cup Gr3 – Round 6.5 – Gilg, Karl – 1-0 – Conrady, Alphonse – G19 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. Bg2 b5 9. O-O Bb7 10. h3 b4
1960 Leipzig olm fin-B – Round 11 – Persitz, Raaphi – 1-0 – Johansson, Martin 1979 – G148 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. Bg2 b5 9. a4 b4 10. Nd5 Nxd5
1964 Magdeburg ch DDR – Round 4 – Fuchs, Reinhart – 0-1 – Maedler, Juergen, Dr. – G10 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. Bg2 b5 9. O-O Bb7 10. a4 b4
1965 Belgrade – Round 4 – Matulovic, Milan – 1-0 – ? – G23 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. Bh3 Be7 9. Bg5 O-O 10. a4 h6
1965 Titograd – Round 6 – Nikolic, Stanimir – 1/2-1/2 – Rajkovic, Dalibor – G43 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. Bg2 b5 9. Bg5 Be7 10. a4 b4
1965 URS-JUG – Round 1 – Ciric, Dragoljub M – 1-0 – Polugaevsky, Lev – G1 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. a4 Be7 9. Bg2 b6 10. h3 Bb7
1969 Raach zt – Round 5 – Dueckstein, Andreas – 1/2-1/2 – Jakobsen, Ole – G55 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. a4 b6 9. Bg2 Bb7 10. O-O Be7
Linares 1998 – Round 5 – Kasparov, Garry – 1/2-1/2 – Topalov, Veselin – G3 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. a4 b6 9. Bg2 Bb7 10. h3 Be7
Superbet Rapid & Blitz Poland 2025 – Round 27 – Aravindh Chithambaram VR. – 0-1 – Vachier-Lagrave Maxime – G132 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Nbd7 8. a4 b6 9. Bg2 Bb7 10. h3 h5

B91k — Najdorf (1951)

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nde2 Nbd7

Les coups candidats

8.Bg2 — 61.3% (415 parties)

Ambassadeurs : Papp, Sarah (5x), Ghaem Maghami, Ehsan (3x), Stoynov, Ivan (3x), Bogner, Sebastian (3x), Inkiov, Ventzislav (3x), Ojanen, Kaarle S (2x), Grigorov, Jordan N (2x), Rivas Pastor, Manuel (2x)

8.a4 — 37.7% (255 parties)

Ambassadeurs : Kholmov, Ratmir D (10x), Ivanov, Alexander (9x), Kagan, Shimon (4x), Aleksic, Nenad (4x), Bates, Richard A (4x), Savon, Vladimir (3x), Browne, Walter Shawn (3x), Polugaevsky, Lev (3x)

8.h3 — 0.4% (3 parties)

Ambassadeurs : Neulinger, Manfred (1x), Womacka, Mathias (1x), Gardner, Robert (1x), Haessel, Dave (1x), Rodriguez Vila, Andres (1x), Gascon Del Nogal, Jose Rafael (1x)

8.Bh3 — 0.3% (2 parties)

Ambassadeurs : Benko, Pal (1x), Sajtar, Jaroslav (1x), Matulovic, Milan (1x), ? (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.Bg2	8.a4	8.h3	8.Bh3
<1800	23	65%	35%	—	—
1800-2200	163	63%	36%	—	—
2200-2600	410	61%	38%	1%	—
2600+	16	56%	44%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	8.Bg2	8.a4	8.h3	8.Bh3
1950s	10	70%	20%	—	10%
1960s	10	60%	30%	—	10%
1970s	19	63%	37%	—	—
1980s	68	40%	59%	—	—
1990s	110	58%	41%	1%	—
2000s	233	67%	32%	0%	—
2010s	189	66%	33%	1%	—
2020s	38	45%	55%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Bg2	66%	45%	▼ -21.4%
8.a4	33%	55%	▲ +22.5%
8.h3	1%	0%	▼ -0.5%
8.Bh3	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Kasparov, Garry — 1 partie
Ju, Wenjun — 1 partie
Gukesh D — 1 partie

Parties historiques

8.Bg2 — 61.3% (415 parties)

1950 — Schmid, Lothar vs Ojanen, Kaarle S — 1/2-1/2 — Dubrovnik olm
1951 — Book, Eero vs Ojanen, Kaarle S — 1-0 — Tournament Helsinki FIN
1951 — Olafsson, Fridrik vs Eikrem, Arnold — 1-0 — Birmingham/Coventry
1952 — Al Osaimi, Kaiid Ahmad vs Sajtar, Jaroslav — 1/2-1/2 — Helsinki olm
1954 — Klovans, Janis vs Furman, Semyon — 0-1 — Riga LAT

8.a4 — 37.7% (255 parties)

1952 — Kan, Ilya vs Moiseev, Oleg — 1/2-1/2 — Moskou ch-URS
1953 — Lipnitsky, Isaac vs Furman, Semyon — 1-0 — Leningrad RUS
1965 — Ciric, Dragoljub M vs Polugaevsky, Lev — 1-0 — URS
1965 — Ciric, Dragoljub M vs Polugaevsky, Lev — 1-0 — Yugoslavia
1969 — Dueckstein, Andreas vs Jakobsen, Ole — 1/2-1/2 — Raach

8.h3 — 0.4% (3 parties)

1997 — Neulinger, Manfred vs Womacka, Mathias — 0-1 — Feffernitz
2000 — Gardner, Robert vs Haessel, Dave — 0-1 — Alberta Closed-ch
2012 — Rodriguez Vila, Andres vs Gascon Del Nogal, Jose Rafael — 1-0 — San Cristobal

8.Bh3 — 0.3% (2 parties)

1951 — Benko, Pal vs Sajtar, Jaroslav — 1/2-1/2 — Marianske Lazne zt
1965 — Matulovic, Milan vs ? — 1-0 — Belgrade SRB