A13f — English: 1…e6 2.Nc3 Bb4

1.c4 e6 2.Nc3 Bb4 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte b5, paire de fous.
Faiblesses adverses : Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 5 pièces non développées (G1, C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, libère Bf1
● Nf3 — Développer Ng1
● d3 — Libérer Bc1

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : Bb4 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, 5 pièces non développées (B8, G8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Nc6 — Développer Nb8
● ...Nf6 — Développer Ng8
● ...c5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A13f —

1.c4 e6 2.Nc3 Bb4

Eval: [+0.29]

Les coups candidats

3.Qb3 — 21.6% (213 parties)

Ambassadeurs : Rozentalis, Eduardas (16x), Huss, Andreas (7x), Kurajica, Bojan (4x), Gulko, Boris (3x), Drasko, Milan (3x), Portisch, Lajos (2x), Banas, Jan (2x), Miles, Anthony J (2x)

3.e4 — 19.2% (189 parties)

Ambassadeurs : Rozentalis, Eduardas (5x), Backe, Peter (4x), Luczak, Andrzej (3x), Serper, Grigory (3x), Lisek, Juergen (3x), Diaz Camallonga, Carles (3x), Peralta, Fernando (3x), Van der Wiel, John T.H. (2x)

3.Nf3 — 17.0% (167 parties)

Ambassadeurs : Uhlmann, Wolfgang (8x), Bronstein, David I (5x), Rozentalis, Eduardas (4x), Huss, Andreas (4x), Taimanov, Mark (3x), de Wall, Robert (2x), Bator, Robert (2x), Moehring, Guenther (2x)

3.Qc2 — 15.5% (153 parties)

Ambassadeurs : Bischoff, Klaus (3x), Zarnicki, Pablo (3x), Drasko, Milan (3x), Zvolanek, Libor (2x), Banas, Jan (2x), Stohl, Igor (2x), Lukin, Andrei M (2x), Vitolinsh, Alvis (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	3.Qb3	3.e4	3.Nf3	3.Qc2
<1800	15	—	27%	—	13%
1800-2200	164	11%	19%	16%	13%
2200-2600	594	26%	20%	17%	18%
2600+	58	41%	26%	10%	12%

Évolution par décennie (% des parties)

Décennie	N parties	3.Qb3	3.e4	3.Nf3	3.Qc2
1880s	2	100%	—	—	—
1930s	1	—	100%	—	—
1940s	2	—	—	—	—
1950s	9	11%	11%	33%	—
1960s	34	12%	15%	24%	3%
1970s	16	6%	31%	50%	6%
1980s	72	8%	17%	25%	18%
1990s	232	25%	15%	16%	18%
2000s	213	23%	15%	17%	14%
2010s	264	23%	23%	15%	15%
2020s	140	20%	27%	12%	19%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
3.Qb3	23%	20%	▼ -3.5%
3.e4	23%	27%	▲ +4.4%
3.Nf3	15%	12%	▼ -3.0%
3.Qc2	15%	19%	▲ +4.5%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 4 parties
Kasparov, Garry — 3 parties
Carlsen, Magnus — 3 parties
Kramnik, Vladimir — 3 parties
Karpov, Aleksandr — 2 parties
Hou, Yifan — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

3.Qb3 — 21.6% (213 parties)

1880 — Delmar Javier vs Ezra Mackenzie — 0-1 — New York, NY USA
1883 — McKenzie, George vs Blackburne, Joseph — 1-0 — London ENG
1955 — Goldberg, Grigory A vs Khasin, Abram — 0-1 — Moscow RUS
1963 — Gufeld, Eduard vs Platonov, Igor V — 1/2-1/2 — Kiev UKR
1963 — Langeweg, Kick vs Bronstein, David I — 0-1 — Beverwijk NED

3.e4 — 19.2% (189 parties)

1935 — Sanz Aguado, Jose vs Anon, Lotario — 1-0 — Madrid ESP
1959 — Portisch, Lajos vs Taimanov, Mark — 0-1 — Budapest HUN
1960 — Yudovich, Mikhail Jr vs Borisenko, Georgy K — 0-1 — Perm RUS
1960 — Ousatchi, Mark vs ? — 1-0 — ?
1965 — Heemsoth, Hermann vs Sliwa, Bogdan — 0-1 — Baltic Sea tt1

3.Nf3 — 17.0% (167 parties)

1954 — Grob, Henry vs Nievergelt, Erwin — 1-0 — Zurich SUI
1958 — Sherwin, James T vs Bronstein, David I — 0-1 — Portoroz SLO
1959 — Olafsson, Fridrik vs Bronstein, David I — 0-1 — Moscow RUS
1960 — Nei, Iivo vs Taimanov, Mark — 1/2-1/2 — Leningrad ch-URS
1961 — Geller, Efim P. vs Borisenko, Georgy K — 1/2-1/2 — Moscow RUS

3.Qc2 — 15.5% (153 parties)

1963 — Clarke, Paul R H vs Levens, David G — 1-0 — Bath ch-BCF
1976 — Keene, Raymond D vs Sloth, Jorn — 1/2-1/2 — Aarhus DEN
1981 — Tal, Mikhail vs Buturin, Vladimir — 1/2-1/2 — Lvov UKR
1982 — Suba, Mihai vs Cebalo, Miso — 1-0 — Plovdiv BUL
1983 — Stohl, Igor vs Saeed, Saeed-Ahmed — 1/2-1/2 — Belfort FRA

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0)	—
Cases faibles	—	—
Centre	● d5 (2v1), ● e4 (1v0)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 0)
Bb4		● Bb4 Actif (mob. 7)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	5 (g1, c1, f1, a1, h1)	5 (b8, g8, c8, 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	semi-ouvert
Ruptures	● c4-c5, ● d2-d3, ● e2-e3, ● f2-f3	● …c7-c6, ● …c7-c5, ● …d7-d6, ● …d7-d5, ● …e6-e5, ● …f7-f6, ● …f7-f5

Partie
1949 Moskou ch-URS – Round 1 – Goldberg, Grigory – 0-1 – Bronstein, David I – G6 1. c4 e6 2. Nc3 Bb4 3. a3 Bxc3 4. dxc3 d6 5. e4 Nf6 6. f3 a5 7. b3 Nc6 8. Bg5 h6 9. Bh4 Ne5 10. Qc2 b6
1957 Moskou ch-URS – Round 4 – Taimanov, Mark E – 1/2-1/2 – Bronstein, David I – G42 1. c4 e6 2. Nc3 Bb4 3. g3 Ne7 4. Bg2 O-O 5. Nf3 Bxc3 6. dxc3 d6 7. O-O Nbc6 8. Nd4 Na5 9. b3 e5 10. Nc2 Be6
1958 Portoroz Interzonal – Round 15 – Sherwin, James T – 0-1 – Bronstein, David I – G137 1. c4 e6 2. Nc3 Bb4 3. Nf3 Ne7 4. Na4 Nec6 5. a3 Be7 6. b4 Bf6 7. Rb1 d5 8. e3 a6 9. cxd5 exd5 10. d4 O-O
1959 Berlin Ch – Round 9 – Kauder, Hartmut – 1/2-1/2 – Darga, Klaus – G19 1. c4 e6 2. Nc3 Bb4 3. g3 Nf6 4. Bg2 O-O 5. Qb3 c5 6. a3 Bxc3 7. Qxc3 Nc6 8. d3 Qe7 9. Bg5 e5 10. e4 Rb8
1959 Budapest-Leningrad m – Round 1 – Portisch, Lajos – 0-1 – Taimanov, Mark E – G1 1. c4 e6 2. Nc3 Bb4 3. e4 c5 4. Qg4 Kf8 5. Nf3 Nf6 6. Qh4 d6 7. Be2 Nc6 8. O-O h6 9. d3 Rh7 10. Ne1 g5
1960 Moscow-Leningrad m – Round 2.9 – Reshko, Aron – 1-0 – Khasin, Abram – G42 1. c4 e6 2. Nc3 Bb4 3. g3 Ne7 4. Bg2 O-O 5. d4 d5 6. Qb3 Nbc6 7. Nf3 Nf5 8. e3 a5 9. O-O a4 10. Nxa4 dxc4
1961 Palanga Baltic Ch – Round ? – Peterson, Andrejs – 1/2-1/2 – Vistaneckis, Isakas – G5 1. c4 e6 2. Nc3 Bb4 3. a3 Bxc3 4. dxc3 f5 5. Qc2 Nf6 6. f3 b6 7. Bg5 Bb7 8. e3 Nc6 9. Ne2 Qe7 10. Nd4 Ne5
1963 Bath ch-BCF – Round 9.6 – Clarke, Paul R H – 1-0 – Levens, David G – G79 1. c4 e6 2. Nc3 Bb4 3. Qc2 Nc6 4. e3 Nf6 5. Nf3 O-O 6. a3 Bxc3 7. Qxc3 d5 8. d4 Re8 9. b4 e5 10. Nxe5 Nxe5
1963 Hoogovens – Round 11 – Langeweg, Kick – 0-1 – Bronstein, David I – G87 1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 Nf6 5. g3 d5 6. Bg2 O-O 7. O-O d4 8. Nb1 a5 9. d3 e5 10. Na3 Nd7
1963 UKR Ch – Round 14 – Gufeld, Eduard – 1/2-1/2 – Platonov, Igor V – G90 1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 Nf6 5. a3 Bxc3 6. Qxc3 d5 7. g3 a5 8. b3 d4 9. Qc2 e5 10. d3 Bf5
1964 EU Team Ch sf – Round 3.1 – Portisch, Lajos – 1-0 – Ghitescu, Theodor – G32 1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 Nf6 5. d4 d5 6. cxd5 Qxd5 7. Qxd5 exd5 8. Bd2 a6 9. e3 Bf5 10. Nh4 Bg6
1965 Mar del Plata – Round 3 – Stein, Leon Rico – 1-0 – Sanguinetti, Ricardo – G21 1. c4 e6 2. Nc3 Bb4 3. a3 Bxc3 4. bxc3 f5 5. g3 Nf6 6. Bg2 O-O 7. d3 d6 8. Nf3 Bd7 9. c5 Na6 10. cxd6 cxd6
1965 Yerevan – Round 10 – Shashin, Boris – 0-1 – Portisch, Lajos – G52 1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. a3 Be7 5. e3 Nf6 6. d4 d5 7. cxd5 exd5 8. Bd3 O-O 9. Nge2 Re8 10. Bd2 Bf8
1966 URS Team Ch – Round 1 – Bakulin, Nikolac I – 1/2-1/2 – Bronstein, David I – G11 1. c4 e6 2. Nc3 Bb4 3. a3 Bxc3 4. dxc3 Nf6 5. Bg5 h6 6. Bh4 d6 7. Qc2 a5 8. b3 Nbd7 9. Nf3 e5 10. Nd2 Nc5
1966 URS Team Ch – Round 1 – Bakulin, Nikolac I – 1/2-1/2 – Nikitin, Aleksander S – G12 1. c4 e6 2. Nc3 Bb4 3. a3 Bxc3 4. dxc3 f5 5. e4 fxe4 6. Qg4 Qe7 7. Qxe4 Nf6 8. Qh4 b6 9. Be3 Bb7 10. Nf3 Nc6
1967 Moscow – Round 1 – Danov, Vladimir – 0-1 – Borisenko, Georgy K – G7 1. c4 e6 2. Nc3 Bb4 3. a3 Bxc3 4. dxc3 Nf6 5. g3 d6 6. Bg2 e5 7. Nf3 Nbd7 8. O-O a5 9. a4 O-O 10. b3 Qe7
1967 URS Team Ch – Round 1 – Mikenas, Vladas – 1-0 – Levit, Roman – G15 1. c4 e6 2. Nc3 Bb4 3. e4 c5 4. Qg4 Kf8 5. Nf3 d6 6. Qg3 Nc6 7. Be2 Nf6 8. d3 Nd4 9. Bd1 b5 10. cxb5 Nxb5
36. Olympiad 2004 – Round 13 – Zvjaginsev, Vadim – 1/2-1/2 – Arencibia Rodriguez, Walter – G450 1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 Nf6 5. a3 Bxc3 6. Qxc3 O-O 7. d4 a5 8. b3 d6 9. Bb2 Re8 10. Rd1 Qe7
36. Olympiad 2004 – Round 8 – Bu, Xiangzhi – 1/2-1/2 – Arencibia Rodriguez, Walter – G261 1. c4 e6 2. Nc3 Bb4 3. g3 Ne7 4. Bg2 O-O 5. Nf3 d5 6. cxd5 exd5 7. d4 c6 8. O-O Nd7 9. Bf4 Ng6 10. Bg5 Nf6
40. Olympiad Open 2012 – Round 2.28 – Le, Quang Liem – 1-0 – Kurajica, Bojan – G121 1. c4 e6 2. Nc3 Bb4 3. Qb3 Qe7 4. Nb5 Na6 5. a3 Ba5 6. Qg3 Qf6 7. e4 c5 8. e5 Qg6 9. Nd6+ Ke7 10. Bd3 Qxg3
43. Olympiad 2018 – Round 5.14 – Georgiev, Kiril – 1-0 – Papaioannou, Ioannis CS – G306 1. c4 e6 2. Nc3 Bb4 3. Qb3 Ba5 4. Nf3 Nf6 5. g3 d5 6. Bg2 O-O 7. O-O c5 8. d4 cxd4 9. Nxd4 Bb6 10. Nc2 d4
43. Olympiad 2018 – Round 6.2 – Korobov, Anton – 1/2-1/2 – Dragun, Kamil – G380 1. c4 e6 2. Nc3 Bb4 3. e4 Ne7 4. a3 Bxc3 5. bxc3 d6 6. Nf3 b6 7. d4 Bb7 8. Bd3 Qd7 9. O-O Nbc6 10. a4 Na5
6. Sinquefield Cup 2018 – Round 2.3 – Carlsen, Magnus – 1-0 – Karjakin, Sergey – G8 1. c4 e6 2. Nc3 Bb4 3. g3 Nf6 4. Bg2 O-O 5. Nf3 d5 6. a3 Be7 7. d4 dxc4 8. Ne5 Nc6 9. Bxc6 bxc6 10. Nxc6 Qe8
80. Tata Steel GpA 2018 – Round 2.2 – Giri, Anish – 1-0 – Kramnik, Vladimir – G8 1. c4 e6 2. Nc3 Bb4 3. Qb3 Ba5 4. Nf3 c5 5. d4 Nf6 6. dxc5 Na6 7. Be3 Ne4 8. g3 Naxc5 9. Qc2 Bxc3+ 10. bxc3 b6
80. Tata Steel GpA 2018 – Round 6.1 – Svidler, Peter – 1/2-1/2 – Carlsen, Magnus – G32 1. c4 e6 2. Nc3 Bb4 3. Qb3 c5 4. Nb5 Nc6 5. Nd6+ Kf8 6. Nf3 Qe7 7. Nxc8 Rxc8 8. e3 e5 9. Qc2 e4 10. Ng1 Nf6
FIDE World Cup 2025 – Round R1 Rapid 1 – Lalit Babu M R – 1-0 – Warmerdam Max – G162 1. g3 Nf6 2. Bg2 d5 3. d3 c5 4. Nd2 Nc6 5. e4 g6 6. Ne2 Bg7 7. O-O O-O 8. exd5 Nxd5 9. Nb3 Qd6 10. a3 b6
GCT Rapid YourNextMove 2017 – Round 9.4 – Giri, Anish – 1/2-1/2 – Kramnik, Vladimir – G44 1. c4 e6 2. Nc3 Bb4 3. Qc2 c5 4. a3 Bxc3 5. Qxc3 Qf6 6. Qxf6 Nxf6 7. b4 b6 8. Nf3 Nc6 9. Rb1 d6 10. e3 e5
Interpolis 1993 – Round 2 – Sokolov , Ivan – 1/2-1/2 – Rozentalis, Eduardas – G73 1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 Nf6 5. a3 Bxc3 6. Qxc3 d6 7. d4 Qe7 8. Bg5 e5 9. d5 Nb8 10. Nd2 Nbd7
PCA Qualifiers 1993 – Round 5 – Polugaevsky, Lev – 1/2-1/2 – Rozentalis, Eduardas – G84 1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 Nf6 5. a3 Bxc3 6. Qxc3 d6 7. g3 e5 8. Bg2 Qe7 9. O-O O-O 10. b4 a6
PCA Qualifiers 1993 – Round 7 – Illescas Cordoba, Miguel – 1/2-1/2 – Rozentalis, Eduardas – G119 1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 Nf6 5. a3 Bxc3 6. Qxc3 d6 7. d4 Qe7 8. g3 e5 9. d5 Nb8 10. Bg2 O-O
Sharjah Grand Prix 2017 – Round 4.3 – Aronian, Levon – 1/2-1/2 – Riazantsev, Alexander – G30 1. c4 e6 2. Nc3 Bb4 3. Qb3 a5 4. a3 Bxc3 5. Qxc3 Nf6 6. b3 O-O 7. Bb2 d6 8. e3 e5 9. d4 Nc6 10. dxe5 dxe5
Sinquefield Cup 2025 – Round 3 – Abdusattorov Nodirbek – 1/2-1/2 – Praggnanandhaa R – G12 1. c4 e6 2. Nc3 Bb4 3. e4 d6 4. d4 c5 5. Ne2 cxd4 6. Nxd4 Nc6 7. Nxc6 bxc6 8. Bd3 Nf6 9. O-O O-O 10. Qc2 e5
World Blitz 2021 – Round 10.41 – Wojtaszek, Radoslaw – 1/2-1/2 – Blohberger, Felix – G603 1. c4 e6 2. Nc3 Bb4 3. Qc2 Nc6 4. e3 Nf6 5. Nf3 O-O 6. a3 Bxc3 7. Qxc3 d6 8. d4 e5 9. d5 Ne7 10. Nd2 Bf5
World Blitz 2021 – Round 11.6 – Duda, Jacob – 1-0 – Socko, Bartosz – G679 1. c4 e6 2. Nc3 Bb4 3. Qb3 c5 4. Nf3 Nf6 5. a3 Bxc3 6. Qxc3 O-O 7. b4 b6 8. Bb2 Bb7 9. g4 d6 10. g5 Ne8
World Blitz 2021 – Round 9.6 – Erigaisi Arjun – 1/2-1/2 – Socko, Bartosz – G554 1. c4 e6 2. Nc3 Bb4 3. e4 Ne7 4. d4 c5 5. d5 d6 6. Bd3 Bxc3+ 7. bxc3 e5 8. f4 exf4 9. Bxf4 Ng6 10. Bg3 Nd7
World Blitz 2022 – Round 19.13 – Vakhidov, Jakhongir – 0-1 – Abdusattorov, Nodirbek – G996 1. c4 e6 2. Nc3 Bb4 3. Qb3 a5 4. Nf3 Nf6 5. a3 Bxc3 6. Qxc3 O-O 7. e3 b6 8. Be2 Bb7 9. O-O d6 10. b3 Nbd7
World Rapid 2021 – Round 4.17 – Dubov, Daniil – 1-0 – Socko, Bartosz – G206 1. c4 e6 2. Nc3 Bb4 3. Qc2 b6 4. a3 Bxc3 5. Qxc3 Nf6 6. Nf3 Bb7 7. g3 O-O 8. Bg2 c5 9. O-O d5 10. b4 Nbd7

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