B52q — Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.Re1 Nf6

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.Re1 Nf6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Faiblesses adverses : Bf8 enfermé, roi noir au centre.
Problèmes : Bc1 enfermé, 3 pièces non développées (B1, C1, A1).
Plans :
● Nbd2 — Développer Nb1
● d3 — Libérer Bc1
● c3 — Préparer d4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte b4, case forte d4, case forte g4, case forte e5, avant-poste e5(C).
Faiblesses adverses : Bc1 enfermé.
Problèmes : roi au centre, Bf8 enfermé, 3 pièces non développées (F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Bb4 — Développer Bf8
● ...c4 — Rupture
● ...d5 — Rupture
● ...e6 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

B52q —

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.Re1 Nf6

Eval: [-0.05]

Les coups candidats

7.c3 — 69.4% (1380 parties)

Ambassadeurs : Laurent, Bruno (9x), Savic, Miodrag R (9x), Cosentino, Aldo (9x), Wharrier, Jonathon A (8x), Shubin, Kirill (8x), Hernandez Leon, Alberto (7x), Mendes Aaron Reeve (6x), Zaitsev, Igor A (5x)

7.b3 — 9.7% (192 parties)

Ambassadeurs : Rozentalis, Eduardas (4x), Donner, Jan-Hein (3x), Liang, Jinrong (3x), Vujosevic, Vladimir (3x), Felgaer, Ruben (3x), Alavkin, Arseny (3x), Mandura, Tijana (3x), Bereslavsky, Michael (2x)

7.d4 — 9.4% (186 parties)

Ambassadeurs : Trefny, Vlastimil (3x), Stubbe, Wilko (3x), Munoz, Miguel (3x), Lilienthal, Andor (2x), Najdorf, Miguel (2x), Shabanov, Yuri (2x), Nurkic, Sahbaz (2x), Ulybin, Mikhail (2x)

7.c4 — 5.9% (118 parties)

Ambassadeurs : Munoz, Miguel (6x), Ivanov, Alexander Al. (4x), Srebrnic, Vojko (2x), Taggatz, Mario (2x), Gausel, Einar J (2x), Tisdall, Jonathan D (2x), Necesany, Zdenek (2x), Liang, Jinrong (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.c3	7.b3	7.d4	7.c4
<1800	69	74%	3%	12%	1%
1800-2200	648	74%	6%	9%	4%
2200-2600	1011	66%	13%	9%	8%
2600+	42	71%	14%	7%	2%

Évolution par décennie (% des parties)

Décennie	N parties	7.c3	7.b3	7.d4	7.c4
1950s	21	57%	5%	29%	10%
1960s	20	75%	15%	10%	—
1970s	27	59%	—	22%	4%
1980s	26	54%	8%	27%	4%
1990s	201	53%	16%	14%	9%
2000s	640	65%	15%	8%	7%
2010s	757	73%	7%	9%	6%
2020s	297	84%	3%	7%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.c3	73%	84%	▲ +10.7%
7.b3	7%	3%	▼ -3.4%
7.d4	9%	7%	▼ -2.1%
7.c4	6%	3%	▼ -2.3%

Joueurs célèbres

Champions du monde dans cette position

Hou, Yifan — 3 parties
Tal, Mikhail — 2 parties
Carlsen, Magnus — 1 partie
Kasparov, Garry — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

7.c3 — 69.4% (1380 parties)

1950 — Boleslavsky, Isaac vs Najdorf, Miguel — 1/2-1/2 — Budapest HUN
1951 — Milic, Borislav vs Simonovic, Borko — 1-0 — Ljubljana
1951 — Szilagyi, Gyorgy Laszlo vs Kapu, Jeno — 1-0 — Hungary ch
1952 — Alonso-Lej De Las Casas, Fernando vs Martello Panno, David — 1/2-1/2 — Buenos Aires ARG
1953 — Boleslavsky, Isaac vs Petrosian, Tigran A. — 1/2-1/2 — Bucharest ROU

7.b3 — 9.7% (192 parties)

1959 — Toran Albero, Roman vs Donner, Jan-Hein — 1/2-1/2 — Beverwijk NED
1961 — Abellan Lopez, Antonio vs Gligoric, Svetozar — 1/2-1/2 — Torremolinos ESP
1963 — Barendregt, Johan vs Donner, Jan-Hein — 1/2-1/2 — Amsterdam NED
1963 — Armoon Tan, Hooman vs Donner, Jan-Hein — 0-1 — Beverwijk NED
1980 — Karlsson, Lars 1937 vs Danner, Georg — 1-0 — Hradec Kralove CZE

7.d4 — 9.4% (186 parties)

1950 — Lilienthal, Andor vs Najdorf, Miguel — 0-1 — ?
1950 — Lilienthal, Andor vs Najdorf, Miguel — 0-1 — Budapest HUN
1951 — Perez Perez, Francisco Jose vs Toran Albero, Roman — 1-0 — Madrid ESP
1952 — Zavaleta Pomar, Oscar Ricardo vs Abadie Romero, Jonathan — 1-0 — Havana CUB
1953 — Taimanov, Mark vs Gligorić, Svetozar — 0-1 — Zurich SUI

7.c4 — 5.9% (118 parties)

1954 — Srebrnic, Vojko vs Taggatz, Mario — 0-1 — Bled SLO
1955 — Bilek, Istvan vs Dimc, Dragutin — 1-0 — Zagreb-B Zagreb CRO
1976 — Larsen, Bent vs Sandahl, Jan — 1/2-1/2 — Copenhagen DEN
1983 — Hernandez Olin, Jose Rafael vs Tiemann, Christoph — 0-1 — WT/M/287
1992 — Watzka, Horst vs Beck, Gerald — 1/2-1/2 — Staatsliga A

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● d6→c5, e7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● b4 (2v0), ● d4 (2v1), ● g4 (2v0), ● e5 (2v1)
Cases faibles	—	—
Centre	—	● d4 (2v1), ● e5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	Non	Non
Non développées	3 (b1, c1, a1)	3 (f8, a8, h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c2-c3, ● d2-d3, ● e4-e5	● …c5-c4, ● …d6-d5, ● …e7-e6, ● …e7-e5

Partie
1950 Candidats Tournament – Round 12 – Boleslavsky, Isaac – 1/2-1/2 – Najdorf, Miguel – G52 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1950 Candidats Tournament – Round 13 – Lilienthal, Andor – 0-1 – Najdorf, Miguel – G55 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. d4 cxd4 8. Bg5 Ng4 9. Nxd4 h6 10. Bh4 g5
1951 Hungary Ch – Round 1 – Szilagyi, Gyorgy Laszlo – 1-0 – Kapu, Jeno – G58 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 Ne5 8. d4 Nxf3+ 9. Qxf3 cxd4 10. cxd4 e6
1951 YUG Ch 6th – Round 6 – Milic, Borislav – 1-0 – Simonovic, Borko – G31 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1952 Buenos Aires – Round 1 – Alonso-Lej De Las Casas, Fernando – 1/2-1/2 – Martello Panno, David – G15 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 g6 8. d4 cxd4 9. cxd4 Bg7 10. d5 Nb4
1953 Bucharest – Round 1 – Boleslavsky, Isaac – 1/2-1/2 – Petrosian, Tigran A. – G10 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d3 Be7 9. Nbd2 O-O 10. Nf1 b5
1953 Bucharest – Round 18 – Boleslavsky, Isaac – 1/2-1/2 – Petrosian, Tigran V – G175 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d3 Be7 9. Nbd2 O-O 10. Nf1 b5
1953 Candidats Tournament – Round 17 – Taimanov, Mark E – 0-1 – Gligorić, Svetozar – G110 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. d4 cxd4 8. Bg5 d5 9. Bxf6 gxf6 10. exd5 Qxd5
1955 Budapest HUN – Round ? – Bilek, Istvan – 0-1 – Forintos, Gyozo V – G20 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d3 Be7 9. Bg5 h6 10. Be3 Ne5
1956 Budapest Alekhine – Round 1 – Lopez Molnar, Aidan Mikael – 1/2-1/2 – Benko, Pal – G33 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. d4 cxd4 8. Nxd4 g6 9. b3 Nxd4 10. Qxd4 Bg7
1956 CSR Ch sf Bratislava SVK – Round 3 – Jezek, Stanislav – 1-0 – Lax, Hendrich – G4 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 g5 8. d4 g4 9. Nh4 cxd4 10. cxd4 d5
1956 URS Ch sf – Round ? – Nezhmetdinov, Rashid – 1/2-1/2 – Shamkovich, Leonid – G59 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. c4 Be7 9. Nc3 O-O 10. d3 Ne5
1957 New Jersey State Ch Open – Round 1 – Green, Matthew R – 1-0 – Sherwin, James T – G3 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d3 Be7 9. Nbd2 O-O 10. Qe2 b5
1959 Hoogovens – Round 1 – Toran Albero, Roman – 1/2-1/2 – Donner, Jan-Hein – G15 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. b3 e6 8. Bb2 Be7 9. d4 cxd4 10. Nxd4 d5
1959 US-op – Round 7 – Ulvestad, Olaf – 0-1 – Steinmeyer, Robert – G12 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1960 Buenos Aires ch-ARG – Round 9 – Bielicki, Carlos – 1/2-1/2 – Goldenberg, Edgardo – G66 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. c3 e6 8. d3 Be7 9. Nbd2 O-O 10. h3 b5
1960 BUL-ch14 – Round 11 – Karastoichev, Emil – 1/2-1/2 – Neikirkh, Oleg – G11 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1960 UKR Ch – Round 7 – Ousatchi, Mark – 1/2-1/2 – Gufeld, Eduard – G41 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1961 Hoogovens – Round 1 – Barendregt, Johan – 0-1 – Olafsson, Fridrik – G27 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1961 Torremolinos – Round 6 – Abellan Lopez, Antonio – 1/2-1/2 – Gligoric, Svetozar – G25 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. b3 g6 8. Bb2 Bg7 9. d4 cxd4 10. Nxd4 O-O
1962 Vrnjacka Banja – Round 11 – Cetkovic, Momcilo – 0-1 – Matanovic, Aleksandar – G106 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 d5 9. e5 Ne4 10. Nbd2 Nxd2
1963 Hoogovens – Round 14 – Armoon Tan, Hooman – 0-1 – Donner, Jan-Hein – G114 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. b3 e6 8. Bb2 Be7 9. d4 cxd4 10. Nxd4 d5
1963 IBM – Round 2 – Barendregt, Johan – 1/2-1/2 – Donner, Jan-Hein – G9 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. b3 e6 8. Bb2 Be7 9. d4 cxd4 10. Nxd4 d5
1964 Pecs – Round 13 – Gipslis, Aivars – 1/2-1/2 – Bobotsov, Milko G – G77 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1965 Buenos Aires ch-ARG – Round 17 – Behrensen, Jorge – 0-1 – Duin Barbera, Tomas Eduardo – G104 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. d4 cxd4 8. Nxd4 g6 9. Nc3 Bg7 10. Nb3 O-O
1965 JUG Ch – Round 3 – Bradvarevic, Aleksandar – 1/2-1/2 – Bogdanovic, Rajko – G3 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1965 Titograd – Round 5 – Bradvarevic, Aleksandar – 1/2-1/2 – Bertok, Mario Jr. – G36 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. d4 cxd4 8. Nxd4 e6 9. Nc3 Be7 10. Bg5 O-O
1967 Sousse Interzonal – Round 5 – Gipslis, Aivars – 1/2-1/2 – Korchnoi, Viktor – G44 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1968 Palma de Mallorca – Round 17 – Alcaide Corral, Carlos Jose – 0-1 – Benko, Pal – G152 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. c3 e6 8. d3 Be7 9. a4 O-O 10. Nbd2 Qc7
1968 URS Team Ch – Round 1 – Kimelfeld, Rudolf – 0-1 – Gufeld, Eduard – G94 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. c3 e6 8. d4 cxd4 9. Nxd4 Be7 10. c4 O-O
1969 JUG-URS – Round ? – Damjanovic, Mato – 1/2-1/2 – Gufeld, Eduard – G17 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
1970 Vinkovci – Round 14 – Szabo, Laszlo – 1/2-1/2 – Parma, Bruno – G64 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. c3 e6 8. d3 Be7 9. Bg5 O-O 10. Nbd2 d5
1990 Linares 8th – Round 11 – Salov, Valery – 1/2-1/2 – Beliavsky, Alexander G – G62 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. d4 cxd4 8. Nxd4 g6 9. Nxc6 bxc6 10. b3 Bg7
36. Olympiad 2004 – Round 12 – Bu, Xiangzhi – 1-0 – Ibrahimov, Rafiq – G430 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d3 Be7 9. Nbd2 O-O 10. Nf1 b5
40. Olympiad Open 2012 – Round 1.1 – De La Riva Aguado, Oscar – 1/2-1/2 – Maroroa Jones, Gawain C B – G1 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
41. Olympiad Open 2014 – Round 4.9 – Hernandez Guerrero, Gilberto – 1-0 – Mchedlishvili, Mikheil – G310 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
Fujitsu-Siemens Giants 2000 – Round 2 – Leko, Peter – 0-1 – Kasparov, Garry – G4 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. b3 g6 8. c3 Bg7 9. d4 cxd4 10. cxd4 d5
GCT Rapid Paris 2018 – Round 6.5 – Nakamura, Hikaru – 1/2-1/2 – Grischuk, Alexander – G30 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
GCT Rapid Paris 2021 – Round 2.2 – Nepomniachtchi, Ian – 1-0 – Bacrot, Etienne – G6 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4
Hoogovens Blitz, Wijk aan Zee NED 1998 – Round 1 – Nijboer, Friso – 1/2-1/2 – Polgar, Judit – G1 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. c3 g6 8. d4 cxd4 9. cxd4 Bg7 10. Nc3 O-O
Milaan 1975 – Round 6 – Larsen, Bent – 0-1 – Tal, Mikhail – G23 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Re1 Nf6 7. d3 e6 8. Bg5 Be7 9. Nbd2 h6 10. Bh4 O-O
Olympiad 2002 – Round 12 – Ganguly, Surya Shekhar – 1/2-1/2 – Dorfman, Iossif – G407 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. Nc3 e6 8. d4 cxd4 9. Nxd4 Be7 10. b3 O-O
World Rapid 2021 – Round 1.65 – Ter-Sahakyan, Samvel – 1-0 – Baum, Jonasz – G52 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ng8
World Rapid 2021 – Round 7.53 – Bartel, Mateusz – 1-0 – Petrovskiy, Vadym – G427 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4

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