B74b — Sicilian: Dragon, Classical, 9.Nb3 b6

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 b6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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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

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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

B74b — 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 b6

Eval: [+0.11]

Les coups candidats

10.f4 — 83.6% (184 parties)

Ambassadeurs : Romero Holmes, Alfonso (3x), Giorgadze, Tamaz (2x), Grafl, Florian, Dr. (2x), Kotsur, Pavel (2x), Pirttimaki, Timo (2x), Neugebauer, Thomas (2x), Stoltz, Gosta (1x), Lokvenc, Joseph (1x)

10.Qd2 — 8.6% (19 parties)

Ambassadeurs : Gereben, Erno (1x), Tanner, Heinrich (1x), Blohm, David (1x), Whitehead, Jay E (1x), Hallmann Bettina (1x), Weiss, Katharina (1x), Diulgher, Elena (1x), Raeva, Elitza (1x)

10.f3 — 5.5% (12 parties)

Ambassadeurs : Capablanca, Jose (1x), Stuart, David (1x), Nield Alan E (1x), Crakanthorp, Spencer (1x), Rellstab, Ludwig (1x), Marthaler, Otto (1x), Moreno Mestre, Julian (1x), Navarro Alonso, Jorge (1x)

10.h3 — 0.9% (2 parties)

Ambassadeurs : Lagerman, Robert (1x), Stupavski, Zdenko (1x), Song, Alan (1x), Moor, Nathaniel Philip (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10.f4	10.Qd2	10.f3	10.h3
<1800	7	86%	14%	—	—
1800-2200	73	85%	3%	8%	1%
2200-2600	88	85%	10%	3%	1%
2600+	1	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	10.f4	10.Qd2	10.f3	10.h3
1900s	1	—	—	100%	—
1930s	4	75%	—	25%	—
1950s	2	100%	—	—	—
1960s	5	80%	—	20%	—
1970s	9	78%	22%	—	—
1980s	15	100%	—	—	—
1990s	50	90%	6%	2%	—
2000s	67	82%	10%	4%	1%
2010s	55	80%	9%	9%	—
2020s	12	75%	17%	—	8%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10.f4	80%	75%	▼ -5.0%
10.Qd2	9%	17%	▲ +7.6%
10.f3	9%	0%	▼ -9.1%
10.h3	0%	8%	▲ +8.3%

Parties historiques

10.f4 — 83.6% (184 parties)

1930 — Gromer, Aristide vs Ayllon Soler, Pablo — 0-1 — Hamburg olm
1936 — Stoltz, Gosta vs Lokvenc, Joseph — 1-0 — Munich GER
1938 — Znosko-Borovsky, Eugene vs Baratz, Abraham — 0-1 — Paris FRA
1951 — Grob, Henry vs Bogoljubow, Efim — 1-0 — Bad Pyrmont GER
1951 — Ravinsky, Grigory vs Liublinsky, Victor — 1-0 — Sverdlovsk

10.Qd2 — 8.6% (19 parties)

1977 — Gereben, Erno vs Tanner, Heinrich — 1/2-1/2 — Davos BT SASB
1979 — Blohm, David vs Whitehead, Jay E — 0-1 — Berkeley
1997 — Diulgher, Elena vs Raeva, Elitza — 1-0 — Cannes FRA
1998 — Ochoa Velasquez, Fabio vs Kakenov, Mukhtar — 0-1 — Oropesa del Mar ESP
1999 — Hallmann Bettina vs Weiss, Katharina — 1/2-1/2 — Lingen

10.f3 — 5.5% (12 parties)

1909 — Capablanca, Jose vs Stuart, David — 0-1 — Philadelphia, PA USA
1934 — Nield Alan E vs Crakanthorp, Spencer — 0-1 — Sydney AUS
1961 — Rellstab, Ludwig vs Marthaler, Otto — 1-0 — Graz AUT
1999 — Moreno Mestre, Julian vs Navarro Alonso, Jorge — 1-0 — Oropesa del Mar ESP
2000 — Kulikov, Evgeny vs Matjushin, Gennady — 1/2-1/2 — St Petersburg RUS

10.h3 — 0.9% (2 parties)

2005 — Lagerman, Robert vs Stupavski, Zdenko — 1/2-1/2 — Budapest HUN
2021 — Song, Alan vs Moor, Nathaniel Philip — 1/2-1/2 — Sturbridge USA

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● a7→b6, 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. 8)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 7)
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
1930 Hamburg olm – Round 1 – Gromer, Aristide – 0-1 – Ayllon Soler, Pablo – G39 1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 d6 7. Be2 Nf6 8. O-O O-O 9. Nb3 b6 10. f4 Bb7
1936 Muenchen ol – Round 9 – Stoltz, Gosta – 1-0 – Lokvenc, Joseph – G21 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 b6 10. f4 Bb7
1951 URS Ch sf – Round 17 – Ravinsky, Grigory – 1-0 – Liublinsky, Victor – G20 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Nb3 d6 8. Be2 O-O 9. O-O b6 10. f4 Bb7
1961 Graz 1st – Round 3 – Rellstab, Ludwig – 1-0 – Marthaler, Otto – G6 1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 d6 7. Be2 Nf6 8. O-O O-O 9. Nb3 b6 10. f3 Bb7
1963 CAN Ch – Round 4 – Yanofsky, Harry – 0-1 – Macskasy, Elod – G10 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. Be3 Nc6 8. O-O O-O 9. Nb3 b6 10. f4 Bb7
1969 Reggio Emilia 6970 12th – Round ? – Troianescu, Octav – 1/2-1/2 – Damjanovic, Mato – G9 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 O-O 8. Nb3 d6 9. O-O b6 10. f4 Nd7

1930 Hamburg olm – Round 1 – Gromer, Aristide – 0-1 – Ayllon Soler, Pablo – G39

1936 Muenchen ol – Round 9 – Stoltz, Gosta – 1-0 – Lokvenc, Joseph – G21

1951 URS Ch sf – Round 17 – Ravinsky, Grigory – 1-0 – Liublinsky, Victor – G20

1961 Graz 1st – Round 3 – Rellstab, Ludwig – 1-0 – Marthaler, Otto – G6

1963 CAN Ch – Round 4 – Yanofsky, Harry – 0-1 – Macskasy, Elod – G10

1969 Reggio Emilia 6970 12th – Round ? – Troianescu, Octav – 1/2-1/2 – Damjanovic, Mato – G9