C49l — Four Knights: Symmetrical, 7.Bg5 Bxc3

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur la case forte c4, des fous actifs en b5 et g5, la paire de fous et la colonne semi-ouverte b.

Côté adverse. Le fou enfermé en c8.

En contrepartie. Le pion isolé a2.

Plans. h3 (Empêcher ...Bg4) ; c3 (Préparer d4) ; Tour sur colonne b.

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur la case forte g4.

Côté adverse. Le pion isolé a2 et un mauvais fou en b5.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...Bg4 (Développer Bc8, clouer Nf3) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● c2, ● c3	—
Pions isolés	● a2	—
Arriérés	—	—
Chaînes	● c2→d3, d3→e4	● d6→e5, c7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● c4 (2v0)	● g4 (2v0)
Cases faibles	—	—
Centre	—	● e5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● b	—

Pièces

	♔ Blancs	♚ Noirs
Bb5	● Bb5 Actif (mob. 4)
Bg5	● Bg5 Actif (mob. 7)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	Non
Non développées	1 (a1)	2 (c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c3-c4, ● d3-d4	● …d6-d5

Partie
1900 DSB-12.Kongress – Round 7 – Maroczy, Geza – 1-0 – D Marco, Gianni – G46 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Ne7 9. Nh4 c6 10. Bc4 d5
1900 London – Round 11 – Lawrence, Thomas F – 0-1 – Teichmann, Richard – G30 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Ne7 9. Bxf6 gxf6 10. Nh4 f5
1902 DSB-13.Kongress – Round 14 – Levin Astorga, Nicolas Daniel – 1/2-1/2 – Suechting, Hugo – G66 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bxf6 gxf6 10. Nh4 f5
1902 Monte Carlo – Round 16 – Teichmann, Richard – 1/2-1/2 – Napier, William – G65 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bxf6 gxf6 10. Nh4 f5
1904 Cambridge Springs – Round 3 – Lawrence, Thomas F – 0-1 – D Marco, Gianni – G5 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Bc4 Kh8
1906 DSB-15.Kongress – Round 17 – Janowski, Dawid – 1-0 – Spielmann, Rudolf – G102 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Nxg6 fxg6
1906 DSB-15.Kongress – Round 4 – Wolf Heinrich – 1/2-1/2 – Spielmann, Rudolf – G21 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Bc4 Kh8
1906 Ostende – Round 1 – Maroczy, Geza – 1-0 – Bernstein, Ossip – G33 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bxf6 gxf6 10. Nh4 c6
1907 Ostende II – Round 16 – Shoosmith, Hector W – 0-1 – Leonhardt, Paul – G197 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bxf6 gxf6 10. Nh4 f5
1907 Ostende II – Round 7 – Perlis, Julius – 1/2-1/2 – Jacob Francis – G92 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Nxg6 fxg6
1907 Vienna – Round 2 – Wolf Heinrich – 1-0 – Loewy, Leopold Jr – G10 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. Qd2 Ne7 10. Bxf6 gxf6
1908 Prague – Round 15 – Treybal, Frantisek – 0-1 – Spielmann, Rudolf – G123 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ne8 10. Bc4 Kh8
1908 Vienna – Round 1 – Leonhardt, Paul – 1-0 – Johner, Paul – G14 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bxf6 gxf6 10. Nh4 f5
1908 Vienna – Round 15 – Leonhardt, Paul – 1-0 – Johner, Paul – G152 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bxf6 gxf6 10. Nh4 f5
1908 Vienna – Round 7 – Maroczy, Geza – 1-0 – Johner, Paul – G76 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qd7 9. Re1 Qg4 10. Bxc6 bxc6
1909 All-Russian – Round 7 – Romanovsky, Pjotr – 1-0 – Tereshchenko, Nikolay Semenovich – G9 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 c6 10. Bc4 d5
1909 Praag ch CZE – Round ? – Prokes, Ladislav – 1-0 – Gargulak Metodej – G12 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Bd7 9. Rb1 a6 10. Ba4 Rb8
1909 St Petersburg – Round 9 – Romanovsky, Pjotr – 0-1 – Verlinsky, Boris – G93 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bxf6 gxf6 10. Qd2 c6
1909 World Championship 9th – Round 2 – Forgacs, Leo – 0-1 – Lasker, Emanuel – G2 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bc4 Ng6 10. Nh4 Nf4
1909 World Championship 9th – Round 4 – Forgacs, Leo – 0-1 – Lasker, Emanuel – G4 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bc4 Ng6 10. Nh4 Nf4
1910 Berlijn m – Round ? – Post, Erhard – 1-0 – Cohn, Wilhelm – G10 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 c6 10. Bc4 d5
1910 DSB-17.Kongress – Round 16 – Schlechter, Carl – 1/2-1/2 – Teichmann, Richard – G100 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. Rb1 Qe7 10. Re1 Rad8
1911 New York – Round 1 – Capablanca, Jose – 1/2-1/2 – Bierwirth, AH. – G4 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bg4 9. Bxc6 bxc6 10. h3 Bh5
1911 San Sebastian – Round 14 – Capablanca, Jose – 1/2-1/2 – Teichmann, Richard – G87 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 1/2-1/2
1911 San Sebastian – Round 8 – Tarrasch, Siegbert – 1/2-1/2 – Vidmar, Marjeta – G49 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ne8 10. Bc4 Be6
1912 DSB-18.Kongress – Round 5 – Důras, Oldřich – 1-0 – Levitsky, Stepan – G39 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Nxg6 hxg6
1912 DSB-18.Kongress – Round 8 – Důras, Oldřich – 1-0 – Treybal, Karel – G62 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Kh8 9. Nd2 h6 10. Bh4 g5
1912 It (Men) Bad Pistyan CZE – Round 4 – Leonhardt, Paul – 1-0 – Salwe, Georg – G20 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bg4 9. h3 Bxf3 10. Qxf3 h6
1913 New York National – Round 10 – Chajes, Oscar – 1-0 – Tennenwurzel, Edward – G45 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Bc4 Nxh4
1914 DSB-19.Kongress – Round 1 – Post, Erhard – 1/2-1/2 – Breyer, Gyula – G7 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 c6 10. Bc4 d5
1921 Carrasco – Round 16 – Grau, Roberto G – 1-0 – Palau, Luis – G38 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Nxg6 hxg6
1922 Londen – Round 10 – Znosko-Borovsky, Eugene – 1/2-1/2 – Morrison, John – G34 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bc4 Be6 10. Bxf6 gxf6
1923 GBR Ch 16th – Round 11 – Thomas, George Alan – 1-0 – Steele, Charles Gilbert – G25 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. Rb1 Rb8 10. Qd2 Re8
1923 GBR Ch 16th – Round 5 – Yates, Fred Dewhirst – 1-0 – Steele, Charles Gilbert – G11 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. Re1 Re8 10. Rb1 a6
1924 NED-ch05 – Round 8 – Loman, Rudolf – 1-0 – Olland, Adolf George – G10 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Nxg6 fxg6
1926 Trencianske Teplice SVK – Round 7 – Schulz, Jan Sr – 1/2-1/2 – Hromadka, Karel – G9 1. e4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 c6 10. Bc4 d5
1928 Budapest – Round 1 – Merenyi, Lajos – 1/2-1/2 – Steiner, Herman – G35 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Bc4 Be6 10. Nd2 Ng6
1938 Trade Unions – Round 18 – Panov, Vasily – 1/2-1/2 – Kamishov, Mikhail P – G146 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Bd7 9. Re1 Ne7 10. Bc4 Ng6
1945 Moscow Ch – Round 2 – Bondarevsky, Igor – 0-1 – Kamishov, Mikhail P – G10 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Bd7 9. d4 Re8 10. Re1 h6
1945 Odense – Round ? – Hage, Poul – 0-1 – Poulsen, Christian – G13 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. d3 d6 6. O-O O-O 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Nxg6 fxg6
1951 YUG Ch 6th – Round 19 – Trifunovic, Petar – 1/2-1/2 – Udovcic, Mijo – G110 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 a6 9. Bxc6 bxc6 10. Nd2 h6
1955 CSR Ch – Round 4 – Betak Miroslav – 1/2-1/2 – Vesely, Jiri – G31 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Bd7 9. Re1 h6 10. Bd2 Ne7
1955 Gecsei Memorial – Round 5 – Andrasi, Ferenc – 0-1 – Negyesy, Gyorgy – G18 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Ne7 9. Bc4 Ng6 10. Nh4 Nf4
1956 Moscow olm prel – Round 5 – Dobkin, Iosef – 1/2-1/2 – Milic, Bozidar – G161 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 c6 10. Ba4 a5
1962 Bucharest – Round 7 – Drimer, Dolfi – 1/2-1/2 – Radovici, Corvin – G37 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Nxg6 fxg6
1962 Moscow – Round 1 – Aronin, Lev – 1/2-1/2 – Averbach, Y. – G52 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. d4 Re8 10. Qd3 a6
1963 CSR Ch – Round 17 – Pachman, Ludek – 1/2-1/2 – Filip, Miroslav – G155 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. h3 h6 10. Be3 Ne7
1963 Telnice/Usti – Round ? – Novak, Ervin – 0-1 – Kupka, Slavoj – G39 1. e4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Ne7 9. Nh4 c6 10. Bc4 d5
1967 It Agio – Round 2 – Rellstab, Ludwig – 0-1 – Cornelis, Frans B – G5 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 c6 10. Bc4 d5
1967 ITA-ch28 Savona – Round 11 – Paoli, Enrico – 1/2-1/2 – Bacchelli, Renato – G27 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. d3 d6 6. O-O Bxc3 7. bxc3 O-O 8. Bg5 Ne7 9. Qd2 Ne8 10. Bc4 Kh8
1969 Wch jr final A – Round 1 – Bacea Urzica, Andrea – 0-1 – Karpov, Aleksandr – G3 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. d4 h6 10. Bh4 Re8
20. European Teams 2015 – Round 5.15 – Grandelius, Nils – 1/2-1/2 – Hansen, Sune Berg – G207 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Bd7 9. Rb1 a6 10. Ba4 b5
42. Olympiad 2016 – Round 1.4 – Naiditsch, Arkadij – 1-0 – Masango, Simphiwe – G54 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Ne7 9. Nh4 Ng6 10. Nxg6 fxg6
Bugojno 1986 – Round ? – Spassky, Boris V. – 1/2-1/2 – Portisch, Lajos – G64 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. Rb1 h6 10. Bh4 a6
Bugojno 1986 – Round 3 – Spassky, Boris V. – 1/2-1/2 – Portisch, Lajos – G22 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. Rb1 h6 10. Bh4 a6
Global Chess League 2023 – Round 3.4 – Hou, Yifan(HLJ) – 0-1 – Tan, Zhongyi – G36 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Ne7 9. Re1 Ng6 10. d4 h6
World Blitz 2016 – Round 17.17 – Naiditsch, Arkadij – 1-0 – Tomashevsky, Evgeny – G669 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Bd7 9. Rb1 a6 10. Ba4 Rb8
World Blitz 2016 – Round 9.23 – Bologan, Victor – 1-0 – Tomashevsky, Evgeny – G357 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Bd7 9. Rb1 a6 10. Ba4 Rb8
World Blitz 2017 – Round 2.7 – Naiditsch, Arkadij – 1/2-1/2 – Wang, Hao(ZJWZ) – G118 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Ne7 9. Re1 Ng6 10. d4 h6
World Blitz 2017 – Round 20.32 – Kovalev, Vladislavadislav – 1/2-1/2 – Nguyen, Ngoc Truong Son – G1047 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Ne7 9. Re1 Ng6 10. d4 h6
World Cup 1991 – Round 15 – Chandler, Murray G – 1/2-1/2 – Karpov, Anatoly – G111 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Bd7 9. Rb1 a6 10. Ba4 Rb8

C49l — Symmetrical

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3

Eval: [+0.15]

Les coups candidats

8…Qe7 — 57.6% (2319 parties) →

Ambassadeurs : Jovanovic, Bratislav M (11x), Capablanca, Jose (9x), Rubinstein, Akiba (9x), Jussupow, Artur (8x), Istratescu, Andrei (8x), Tarrasch, Siegbert (7x), Janowski, Dawid (7x), Wolf Heinrich (7x)

8…h6 — 18.9% (761 parties) →

Ambassadeurs : Schubert, Steffen (10x), Jovanovic, Bratislav M (6x), Janowski, Dawid (5x), Euwe, Max (5x), Splosnov, Sergei (5x), Tarrasch, Siegbert (4x), Treybal, Karel (4x), Thomas, George Alan (4x)

8…Bd7 — 8.5% (342 parties)

Ambassadeurs : Grund, Holger (4x), Wei, Yi (4x), Vujosevic, Vladimir (3x), Tomashevsky, Evgeny (3x), Gao, Rui (3x), Kamishov, Mikhail P (2x), Steele, Charles Gilbert (2x), Dubiel, Jacek (2x)

8…Ne7 — 8.2% (328 parties)

Ambassadeurs : Pillsbury, Harry (10x), Lasker, Emanuel (10x), Capablanca, Jose (5x), Chigorin, Mikhail (4x), Teichmann, Richard (4x), Maroczy, Geza (4x), Janowski, Dawid (4x), Tarrasch, Siegbert (3x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…Qe7	8…h6	8…Bd7	8…Ne7
<1800	95	43%	28%	8%	6%
1800-2200	985	58%	21%	6%	6%
2200-2600	1721	61%	19%	10%	7%
2600+	101	45%	20%	27%	7%

Évolution par décennie (% des parties)

Décennie	N parties	8…Qe7	8…h6	8…Bd7	8…Ne7
1870s	2	—	—	—	100%
1880s	5	—	20%	20%	60%
1890s	30	17%	17%	—	67%
1900s	96	44%	5%	3%	39%
1910s	101	40%	14%	5%	29%
1920s	88	56%	30%	2%	8%
1930s	36	69%	14%	3%	8%
1940s	57	74%	18%	2%	5%
1950s	62	79%	10%	2%	8%
1960s	57	68%	12%	11%	7%
1970s	47	72%	6%	6%	9%
1980s	114	72%	11%	11%	3%
1990s	777	63%	15%	11%	5%
2000s	1074	58%	20%	8%	6%
2010s	1201	56%	22%	10%	7%
2020s	277	46%	30%	7%	9%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…Qe7	56%	46%	▼ -9.6%
8…h6	22%	30%	▲ +8.0%
8…Bd7	10%	7%	▼ -2.4%
8…Ne7	7%	9%	▲ +1.6%

Joueurs célèbres

Champions du monde dans cette position

Lasker, Emanuel — 10 parties
Euwe, Max — 10 parties
Botvinnik, Mikhail — 5 parties
Alekhine, Alexander — 4 parties
Anand, Viswanathan — 4 parties
Karpov, Anatoly — 4 parties
Tal, Mikhail — 3 parties
Smyslov, Vladimir — 3 parties
Hou, Yifan — 3 parties
Karpov, Aleksandr — 2 parties

Parties historiques

8…Qe7 — 57.6% (2319 parties)

1893 — Von Bardeleben, Curt vs Metger, Johannes — 1/2-1/2 — Kiel GER
1898 — Alapin, Simon vs Schlechter, Carl — 0-1 — Vienna AUT
1898 — Lipke, Paul vs Schlechter, Carl — 1/2-1/2 — Vienna AUT
1899 — Tresling, Jan Diderik vs Van Foreest, Arnold — 1/2-1/2 — Amsterdam NED
1899 — Tresling, Joan Diderik vs Van Foreest, Arnold — 1/2-1/2 — Amsterdam NED

8…h6 — 18.9% (761 parties)

1883 — Englisch, Berthold vs Rosenthal, Samuel — 1-0 — London ENG
1891 — Hodges, Albert vs Baird, John — 1-0 — New York, NY USA
1891 — Von Bardeleben, Curt vs Von Scheve, Theodor — 1-0 — Berlin GER
1898 — Janowski, Dawid vs Tarrasch, Siegbert — 1-0 — Vienna AUT
1898 — Janowski, Dawid vs Tarrasch, Siegbert — 1-0 — Vienna AUT

8…Bd7 — 8.5% (342 parties)

1880 — Bier, Max vs Riemann, Fritz — 1/2-1/2 — Braunschweig
1906 — Saburov, Peter Petrovich vs Bernstein, Ossip — 0-1 — Ostend
1907 — Wolf Heinrich vs Loewy, Leopold Jr — 1-0 — Vienna AUT
1909 — Prokes, Ladislav vs Gargulak Metodej — 1-0 — Praag ch CZE
1910 — Schlechter, Carl vs Teichmann, Richard — 1/2-1/2 — Hamburg GER

8…Ne7 — 8.2% (328 parties)

1878 — Metger, Johannes vs Minckwitz, Johannes — 1/2-1/2 — Frankfurt GER
1878 — Gifford, Birkmyre H vs McKenzie, George — 0-1 — Paris FRA
1882 — Paulsen, Louis vs Hruby, Vincenz — 1/2-1/2 — Vienna AUT
1883 — McKenzie, George vs Zukertort, Johannes — 0-1 — London ENG
1889 — Mason, James vs Burn, Amos — 1/2-1/2 — Breslau GER

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