B74a — Sicilian: Dragon, Classical, 9.Nb3

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O 9.Nb3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité aile_dame (3v2), case forte d4, case forte b5, case forte d5, Be2 actif, Be3 actif, paire de fous, colonne d.
Faiblesses adverses : Bg7 enfermé, Bc8 enfermé.
Plans :
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : majorité centre (2v1), case forte g4, case forte e5, avant-poste e5(C), paire de fous, colonne c.
Problèmes : Bg7 enfermé, Bc8 enfermé.
Plans :
● ...Bf5 — Développer Bc8
● ...d5 — Rupture
● ...e6 — Rupture
● ...e5 — Rupture
● ...Rc — Tour sur colonne c

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

B74a — Dragon Classical

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O 9.Nb3

Eval: [-0.19]

Les coups candidats

9…Be6 — 61.5% (3256 parties) →

Ambassadeurs : Thipsay, Praveen M (21x), Koskela, Niina (17x), Gurevich, Vladimir (14x), Roselli Mailhe, Bernardo (12x), Konguvel, Ponnuswamy (12x), Ruefenacht, Matthias (11x), Aitken, James (10x), Vink, Nico (9x)

9…a6 — 12.8% (680 parties) →

Ambassadeurs : Varshini, V (5x), Carlsen, Magnus (3x), Radisavljevic, Dalibor (3x), Dau Khuong Duy (3x), Spielmann, Rudolf (2x), Poulsen, Christian (2x), Boleslavsky, Isaac (2x), Benko, Francisco (2x)

9…Bd7 — 9.4% (500 parties)

Ambassadeurs : Alekhine, Alexander (5x), Saemisch, Friedrich (2x), Marchand, Max (2x), Bech Johansson, Amadeus (2x), Balashov, Yuri (2x), Paulis, Winifred (2x), Chung, Juen Sen (2x), Suarez Calvo, Alesandra (2x)

9…a5 — 8.2% (432 parties) →

Ambassadeurs : Eliskases, Erich (4x), Yanofsky, Daniel Abraham (3x), Korchnoi, Viktor (3x), Donovan, Jeremiah (3x), Aitken, James (3x), Mednis, Edmar J (3x), Kiefer, Gerhard (3x), Gufeld, Eduard (3x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9…Be6	9…a6	9…Bd7	9…a5
<1800	167	48%	19%	17%	4%
1800-2200	1807	56%	15%	13%	7%
2200-2600	1760	69%	12%	4%	8%
2600+	25	80%	12%	—	4%

Évolution par décennie (% des parties)

Décennie	N parties	9…Be6	9…a6	9…Bd7	9…a5
1900s	5	20%	40%	20%	—
1910s	3	—	—	33%	—
1920s	16	31%	12%	56%	—
1930s	99	63%	11%	4%	11%
1940s	136	77%	5%	—	18%
1950s	121	69%	7%	2%	17%
1960s	132	60%	5%	6%	22%
1970s	170	68%	5%	5%	16%
1980s	394	77%	5%	4%	8%
1990s	1165	68%	11%	8%	6%
2000s	1556	60%	13%	12%	7%
2010s	1312	53%	18%	12%	7%
2020s	188	48%	28%	10%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9…Be6	53%	48%	▼ -4.4%
9…a6	18%	28%	▲ +9.4%
9…Bd7	12%	10%	▼ -1.9%
9…a5	7%	3%	▼ -4.1%

Joueurs célèbres

Champions du monde dans cette position

Alekhine, Alexander — 7 parties
Euwe, Max — 3 parties
Smyslov, Vladimir — 3 parties
Carlsen, Magnus — 3 parties
Kasparov, Garry — 2 parties
Kramnik, Vladimir — 2 parties
Botvinnik, Mikhail — 1 partie
Tal, Mikhail — 1 partie
Lasker, Emanuel — 1 partie
Capablanca, Jose Raul — 1 partie
Anand, Viswanathan — 1 partie
Hou, Yifan — 1 partie

Parties historiques

9…Be6 — 61.5% (3256 parties)

1903 — Marco, Georg vs Marchand, Max — 0-1 — Monte Carlo MNC
1922 — Ahues, Carl vs Marchand, Max — 1-0 — Berlin GER
1924 — Reti, Richard vs Tartakower, Savielly — 1-0 — New York, NY USA
1928 — Steiner, Lajos vs Richter, Kurt P — 0-1 — Berlin GER
1928 — Yates, Fred Dewhirst vs Buerger, Victor — 0-1 — Tenby

9…a6 — 12.8% (680 parties)

1909 — Spielmann, Rudolf vs Bernstein, Ossip — 0-1 — St Petersburg RUS
1909 — Spielmann, Rudolf vs Duz-Khotimirsky, Fedor Ivanovich — 1-0 — St Petersburg RUS
1927 — Hoffmann, Heinz vs Reinhardt, Enrique — 1-0 — Magdeburg GER
1929 — Torres, Cristian vs Menchik, Vera Frantsevna — 1-0 — Barcelona Barcelona ESP
1931 — Thomas, George Alan vs Petrovs, Vladimirs — 1-0 — Prague CZE

9…Bd7 — 9.4% (500 parties)

1905 — Johner, Paul vs Fox, Albert — 1-0 — New York, NY USA
1918 — Mlotkowski, Stasch vs Gruer, EW. — 1/2-1/2 — Los Angeles, CA USA
1920 — Larsson, Anders 1955 vs Marchand, Max — 0-1 — Goteborg SWE
1920 — Larsson, Anders vs Marchand, Max — 0-1 — Goteborg SWE
1921 — Schlage, William vs Saemisch, Friedrich — 1-0 — Hamburg GER

9…a5 — 8.2% (432 parties)

1936 — Courte, Sylvain vs Strehle, Ernst — 0-1 — Munich GER
1937 — Balogh Moran, Andres vs Weiss, Adam — 0-1 — IFSB
1937 — Bogoljubow, Efim vs Weichert, P — 1-0 — Bad Saarow
1938 — Spielmann, Rudolf vs Alekhine, Alexander — 1/2-1/2 — Margate ENG
1938 — Gromer, Aristide vs Baulier, A. — 1-0 — Nice FRA

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (3v1), ● b5 (2v0), ● d5 (3v1)	● g4 (2v1), ● e5 (2v0)
Cases faibles	—	—
Centre	● d4 (3v1), ● d5 (3v1)	● e5 (2v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Be2	● Be2 Actif (mob. 7)
Be3	● Be3 Actif (mob. 9)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	1 (a1)	2 (c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● e4-e5, ● f2-f3	● …d6-d5, ● …e7-e6, ● …e7-e5

Partie
1920 Gothenburg-B – Round 6 – Larsson, Anders 1955 – 0-1 – Marchand, Max – G38 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. O-O O-O 9. Nb3 Bd7 10. f3 h6
1921 DSB-21.Kongress – Round 1 – Schlage, William – 1-0 – Saemisch, Friedrich – G5 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. O-O O-O 9. Nb3 Bd7 10. f3 Qc8
1928 Berlin BSG – Round 10 – Saemisch, Friedrich – 1/2-1/2 – Bogoljubow, Efim – G9 1. e4 c5 2. Nc3 g6 3. Nf3 Bg7 4. d4 cxd4 5. Nxd4 Nc6 6. Be3 Nf6 7. Nb3 O-O 8. Be2 d6 9. O-O Bd7 10. Qd2 Re8
1930 Hamburg olm – Round 12.2 – Yates, Frederic D – 0-1 – Tartakower, Savielly – G35 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. O-O Bg7 8. Be3 O-O 9. Nb3 Bd7 10. f3 a6
1931 Prague ol – Round 3 – Hanssen, Lasse Preben – 0-1 – Petrov, Vladimir S. – G9 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. O-O Bg7 8. Be3 O-O 9. Nb3 Ne5 10. f3 Be6
1934 Sitges – Round 13 – Spielmann, Rudolf – 1/2-1/2 – Cherta, Pedro – G75 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. O-O O-O 9. Nb3 Ne5 10. h3 Bd7
1935 Warschau ol – Round 11 – Apscheneek, Fricis – 1-0 – Monticelli, Mario – G14 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. O-O Bg7 8. Be3 O-O 9. Nb3 Bd7 10. f3 a6
1937 POL Ch – Round 3 – Zawadzki, Stanislaw – 0-1 – Foltys, Jan – G6 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O Nc6 8. Nb3 O-O 9. Be3 Na5 10. Qd2 Be6
1937 Stockholm SWE – Round 3 – Montgomerie, John – 0-1 – Foltys, Jan – G16 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O Nc6 8. Nb3 O-O 9. Be3 Na5 10. Nxa5 Qxa5
1952 GBR Ch U18 – Round 2 – Cafferty, Bernard – 1-0 – Gaunt – G2 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. O-O Bg7 8. Be3 O-O 9. Nb3 e6 10. Qd2 d5
1952 Moscow – Round 1 – Liublinsky, Victor – 0-1 – Simagin, Vladimir – G9 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 O-O 8. O-O Nc6 9. Nb3 Bd7 10. f3 Rc8
1954 ITA-ch17 Trieste – Round 8 – Nestler, Vincenzo – 0-1 – Ferrantes, Giovanni – G11 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 g6 7. Be2 Bg7 8. Nb3 O-O 9. O-O Bd7 10. Qd2 a5
1962 CSR Ch – Round 14 – Vesely, Jiri – 1/2-1/2 – Marsalek, Josef – G117 1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8. O-O d6 9. Nb3 Qd8 10. Be2 O-O
1963 Spartak CC – Round ? – Estrin, Yakov – 0-1 – Zhidkov, Valery S – G22 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8. O-O d6 9. Be2 O-O 10. Nb3 Qd8
1964 URS Spartakiad – Round ? – Nikitin, Aleksander S – 1-0 – Averbakh, Yuri L – G24 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8. O-O O-O 9. Nb3 Qd8 10. Be2 d6
1968 YUG Ch 23th – Round 6 – Puc, Stojan – 1/2-1/2 – Rajkovic, Dusan – G31 1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 g6 6. Be3 Bg7 7. Be2 O-O 8. O-O Nc6 9. Nb3 Na5 10. f4 b6
1975 URS Team Ch – Round 3 – Kislova, Alexsandra V – 1-0 – Sabirova, Sophia – G282 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. Be3 O-O 8. O-O Nc6 9. Nb3 Bd7 10. f4 a5

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