B90q — Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 O-O

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 O-O * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité aile_dame (3v2), case forte e4, case forte d5, avant-poste d5(C), Be3 actif, paire de fous, colonne d.
Faiblesses adverses : arriérés d6, b7, Be7 enfermé.
Problèmes : roi au centre, Bf1 enfermé, 3 pièces non développées (F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Bd3 — Développer Bf1
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Avantages : majorité centre (2v1), Be6 actif, paire de fous, colonne c.
Faiblesses adverses : Bf1 enfermé, roi blanc au centre.
Problèmes : Be7 enfermé, arriérés d6, b7.
Plans :
● ...Nbd7 — Développer Nb8
● ...d5 — Rupture
● ...Rc — Tour sur colonne c

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

B90q — Najdorf

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 O-O 10.O-O-O

Eval: [+0.60]

Les coups candidats

10…Nbd7 — 74.4% (13207 parties) →

Ambassadeurs : Salzmann, Stefan (119x), Noble, Mark Frederick (104x), Sorcinelli, Andrea (90x), Sherwood, Russell (80x), Krüger, Hilmar (73x), Krueger, Hilmar (67x), Szerlak, Andrzej (67x), Siigur, Jüri (65x)

10…a5 — 11.9% (2119 parties)

Ambassadeurs : Hoffmann, Frank (18x), Wojtaszek, Radoslaw (15x), Klimakovs, Sergejs (14x), Loginov, Valery A (12x), Sorcinelli, Andrea (12x), Hechl, Gerald (10x), Worek, Joanna (10x), Kasperek, Ryszard (9x)

10…b5 — 7.4% (1318 parties)

Ambassadeurs : Roeder, Matthias (17x), Tsenkov, Ljubomir (14x), Moskalenko, Eduard (10x), Langer, Michael (9x), Fuzishawa, Richard Mitsuo (9x), Vaulin, Alexander P. (8x), Leyva, Hector (8x), Mamonovas, Viktoras (8x)

10…Qc7 — 5.7% (1013 parties)

Ambassadeurs : Delgado Ramirez, Neuris (13x), Pablo Mari, Alejandro (6x), Lagowski, Patryk (6x), Gomez Anadon, Daniel (6x), Manole, Gheorghe (6x), Lanin, Alexsej (6x), Canizares Cuadra, Pedro (6x), Randazzo, Adrian (6x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10…Nbd7	10…a5	10…b5	10…Qc7
<1800	386	69%	12%	11%	4%
1800-2200	5804	73%	12%	9%	6%
2200-2600	10041	76%	12%	6%	6%
2600+	280	70%	18%	2%	9%

Évolution par décennie (% des parties)

Décennie	N parties	10…Nbd7	10…a5	10…b5	10…Qc7
1970s	11	55%	—	36%	9%
1980s	28	25%	18%	43%	14%
1990s	333	17%	35%	41%	5%
2000s	4813	63%	11%	12%	14%
2010s	10442	79%	13%	5%	3%
2020s	2115	89%	5%	4%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10…Nbd7	79%	89%	▲ +9.7%
10…a5	13%	5%	▼ -8.1%
10…b5	5%	4%	▼ -0.6%
10…Qc7	3%	2%	▼ -1.0%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 10 parties
Ju, Wenjun — 3 parties
Hou, Yifan — 3 parties
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Carlsen, Magnus — 1 partie
Gukesh D — 1 partie

Parties historiques

10…Nbd7 — 74.4% (13207 parties)

1971 — Byrne, Robert E vs Zuckerman, Bernard — 0-1 — United States of America
1971 — Byrne, Robert E vs Fischer, Robert J — 0-1 — New York, NY USA
1972 — Byrne, Ray vs Popovych, Orest — 1/2-1/2 — New York, NY USA
1972 — Dzindzichashvili, Roman vs Rashkovsky, Nukhim N — 1-0 — Baku ch-URS
1977 — Schussler, Harry vs Svensson, Gert 1967 — 1-0 — Stockholm SWE

10…a5 — 11.9% (2119 parties)

1981 — Balashov, Yuri vs Danner, Georg — 0-1 — Stary Smokovec SVK
1981 — Hazai, Laszlo Dr. vs Nemet, Ivan — 1-0 — Zurich SUI
1982 — Tratatovici, Moshe vs Ardeleanu, Alin — 1-0 — RO
1982 — Sax, Gyula vs Quinteros, Miguel A. — 1-0 — Moscow RUS
1988 — Tolnai, Tibor vs Busch, Klaus — 1-0 — Berlijn open

10…b5 — 7.4% (1318 parties)

1970 — Byrne, Robert E vs Grefe, John A — 1-0 — American Open
1973 — Williams, A. Howard vs Griffiths, Peter C — 1-0 — Staffordshire
1979 — Vasiukov, Evgeni vs Gufeld, Eduard — 0-1 — Tbilisi tt
1979 — Vasiukov, Evgeni vs Gufeld, Eduard — 0-1 — USSR
1981 — Ostojic, Predrag vs Bogdanovic, Rajko — 1-0 — Pula CRO

10…Qc7 — 5.7% (1013 parties)

1978 — Barry, Colm vs Gallo Restrepo, German — 1-0 — Graz AUT
1980 — Perenyi, Bela vs Inkiov, Ventzislav — 1-0 — Pernik
1981 — Hartmann, Willibald vs Westermeier, Arnulf — 1/2-1/2 — Duitsland tt
1983 — Kondali, Jovan vs Michalek Josef Zdenko — 1-0 — ?
1984 — Smagin, Sergey vs Giorgadze, Tamaz — 0-1 — Tashkent UZB

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d6, ● b7
Chaînes	● g2→f3, f3→e4	● d6→e5, b7→a6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● d5 (3v2)	—
Cases faibles	—	—
Centre	● d4 (3v1), ● d5 (3v2), ● e4 (2v1)	● e5 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 5)
Be3	● Be3 Actif (mob. 9)
Be6		● Be6 Actif (mob. 8)
Be7		● Be7 Enfermé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	3 (f1, a1, h1)	2 (b8, a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Roqué
Droits de roque	O-O / O-O-O	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● f3-f4	● …d6-d5

Partie
19. Amber Blindfold 2010 – Round 8 – Karjakin, Sergey – 0-1 – Grischuk, Alexander – G26 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be7 8. Be3 Be6 9. Qd2 O-O 10. O-O-O a5
2. Sinquefield Cup 2014 – Round 5.3 – Topalov, Veselin – 1-0 – Vachier-Lagrave, Maxime – G15 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 Be7 9. Qd2 O-O 10. O-O-O a5
20. European Teams 2015 – Round 5.8 – Saric, Ivan – 1-0 – Shirov, Alexei – G231 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O a5
4. M-Tel Masters 2008 – Round 1 – Cheparinov, Ivan – 1-0 – Bu, Xiangzhi – G3 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 O-O 10. O-O-O a5
40. Olympiad Open 2012 – Round 1.19 – Del Castilho, Martyn – 0-1 – Papaioannou, Ioannis CS – G32 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 O-O 10. O-O-O a5
41. Olympiad Open 2014 – Round 8.7 – Akopian, Vladimir – 1/2-1/2 – Adhiban, B. – G595 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 Be7 9. Qd2 O-O 10. O-O-O a5
7. World Team Championship 2010 – Round 5 – Erdogdu, Muammer Mustafa – 0-1 – Morozevich, Alexander – G80 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 O-O 10. O-O-O a5
Amber Blindfold 2004 – Round 3 – Anand, Viswanathan – 1-0 – Vallejo Pons, Francisco – G10 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 O-O 10. O-O-O a5
Corus 2001 – Round 13 – Anand, Viswanathan – 1-0 – Van Wely, Loek – G86 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. Qd2 Be7 9. f3 O-O 10. O-O-O Qc7
EU Team Ch (Men) 17th 2009 – Round 9 – Vallejo Pons, Francisco – 0-1 – Morozevich, Alexander – G41 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 O-O 9. Qd2 Be6 10. O-O-O a5
GMA 2004 – Round 4 – Adams, Michael – 1-0 – Zhang, Zhong – G24 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O Qc7
Olympiad 2002 – Round 13 – Bologan, Victor – 0-1 – Vallejo Pons, Francisco – G456 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O Qc7
Olympiad 2002 – Round 5 – Tiviakov, Sergei – 1/2-1/2 – Vera Gonzalez-Quevedo, Reynaldo – G146 1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O Qc7
Olympiad 2002 – Round 7 – Dominguez Perez, Leinier – 0-1 – Sutovsky, Emil – G232 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 O-O 10. O-O-O Qc7
Olympiad 2002 – Round 8 – Adams, Michael – 1/2-1/2 – Vallejo Pons, Francisco – G265 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 O-O 10. O-O-O Qc7
Renova FIDE GP Zug 2013 – Round 10.4 – Caruana, Fabiano – 0-1 – Topalov, Veselin – G57 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O a5
Tal Memorial 2009 – Round 4 – Leko, Peter – 1/2-1/2 – Ivanchuk, Vasyl – G17 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 O-O 10. O-O-O Qc7
TCh-RUS 2005 – Round 3 – Motylev, Alexander – 1-0 – Inarkiev, Ernesto – G48 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 Be7 9. Qd2 O-O 10. O-O-O a5
TCh-RUS 2008 – Round 4 – Karjakin, Sergey – 0-1 – Bu, Xiangzhi – G110 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 O-O 10. O-O-O a5
XXI SuperGM 2004 – Round 13 – Leko, Peter – 1/2-1/2 – Vallejo Pons, Francisco – G37 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 O-O 10. O-O-O a5

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