Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● c2, ● c3	—
Pions isolés	● a2	—
Arriérés	—	—
Chaînes	● c2→d3, d3→e4	● d6→e5, c7→d6, g7→h6
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	● d3-d4	● …d6-d5

C49m — Four Knights: Symmetrical, 7.Bg5 Bxc3 8.bxc3 h6

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 h6 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Jeu au centre (rupture d3-d4).

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

En contrepartie. Le pion isolé a2.

Plans. Bh4 (79 % des parties) ; Bc1 (Fou actif (mobilité 7) — 14 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Jeu au centre (rupture d6-d5).

Atouts. Les Noirs s'appuient sur un contrôle dominant de 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. ...Qe7 (36 % des parties) ; ...Bd7 (Fou actif (mobilité 6), Développer c8 — 14 % des parties) ; ...a6 (Préparer expansion aile dame — 14 % des parties) ; ...Bg4 (Fou actif (mobilité 7), Développer c8 — 14 % des parties) ; ...Ne7 (7 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1901 Monte Carlo Monte Carlo MNC – Round 13 – Janowski, Dawid – 1/2-1/2 – Marco, Georg – G24 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 h6 9. Bh4 Kh7 10. Qd2 Bg4
1902 DSB-13.Kongress – Round 15 – Levin Astorga, Nicolas Daniel – 1/2-1/2 – Gunsberg, Isidor – G69 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 h6 9. Bxf6 Qxf6 10. Bxc6 bxc6
1907 Crystal Palace (BCF Ch 4th) - Round 2 - Shoosmith, Hector W - 1-0 - Mackenzie, Arthur J - G6 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 h6 9. Bh4 Qe7 10. h3 Nd8
1907 Ostende – Round 3 – Schlechter, Carl – 1-0 – Marshall Viele, Fabrizio Aaron – G33 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 h6 9. Bh4 Qe7 10. Re1 Bg4
1910 DSB-17.Kongress – Round 4 – Yates, Frederic D – 1/2-1/2 – Speijer, Abraham – G22 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 h6 9. Bh4 g5 10. Nxg5 Nxe4
1911 New York USA – Round 5 – Chajes, Oscar – 1-0 – Baird, David – G12 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 h6 9. Bh4 a6 10. Bxc6 bxc6
1913 Scheveningen – Round ? – Lasker, Edward – 0-1 – Janowski, Dawid – G59 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 h6 9. Bh4 Qe7 10. Qd2 Nd8
1913 St Petersburg – Round 1 – Znosko-Borovsky, Eugene – 1/2-1/2 – Důras, Oldřich – 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 h6 9. Bh4 Kh8 10. Re1 g5
1914 St Petersburg prel – Round ? – Capablanca, Jose – 1/2-1/2 – Lasker, Emanuel – G26 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 h6 9. Bh4 Bg4 10. h3 Bxf3
1916 New York Rice prel – Round 3 – Perkins, Frank Kendall – 0-1 – Chajes, Oscar – 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 h6 9. Bh4 Qe7 10. Re1 Nd8
1920 Amsterdam – Round 1 – Euwe, Max – 0-1 – Baay, Jacob – 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 h6 9. Bh4 Bg4 10. h3 Bd7
1920 Amsterdam – Round 1 – Euwe, Max – 1/2-1/2 – Speijer, Abraham – G11 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 h6 9. Bh4 Bg4 10. h3 Bxf3
1920 Gothenburg – Round 2 – Tarrasch, Siegbert – 1/2-1/2 – Kostic, Barbara – 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 h6 9. Bh4 Qe7 10. Re1 Nd8
1920 It (Men) Berlin GER – Round 9 – Tarrasch, Siegbert – 1-0 – Spielmann, Rudolf – G15 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 h6 9. Bh4 Qe7 10. Qd2 Nd8
1921 Hastings 2122 Premier 2nd – Round 7 – Yates, Frederic D – 0-1 – Scott, Roland Henry – G13 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 h6 9. Bh4 Qe7 10. Re1 Bg4
1922 Bad Pistyan Breyer Memorial-A – Round 9 – Wolf Heinrich – 1-0 – Treybal, Karel – G28 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 h6 9. Bh4 Bg4 10. h3 Bd7
1924 Hastings Premier Section 1 /25 5th – Round 6 – Maroczy, Geza – 1-0 – Dewing, Leslie Charles Gwyn – G22 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 h6 9. Bh4 Kh8 10. Re1 Rg8
1924 Weston – Round 7 – Bolland, P. – 1/2-1/2 – Euwe, Max – G18 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 h6 9. Bh4 Kh8 10. Re1 Rg8
1924 Weston – Round 7 – Drewitt, John Arthur – 0-1 – Thomas, George Alan – G17 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 h6 9. Bh4 Qe7 10. Rb1 Kh8
1925 Baden-Baden – Round 1 – Te Kolste, Jan Willem – 1/2-1/2 – Rosselli del Turco, Stefano – G97 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 h6 9. Bh4 Kh8 10. Re1 Qe7
1925 Baden-Baden – Round 1 – Te Kolste, Jan Willem – 1/2-1/2 – Thomas, George Alan – G98 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 h6 9. Bh4 Kh8 10. Re1 Qe7
1926 Bardejov – Round 12 – Asztalos, Lajos – 1/2-1/2 – Kostic, Boris – G60 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 h6 9. Bh4 Kh8 10. Re1 g5
1926 Ghent – Round 3 – Janowski, Dawid – 1/2-1/2 – Thomas, George Alan – G11 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 h6 9. Bh4 Kh8 10. Qd2 Bg4
1928 It BSG Berlin GER – Round 3 – Stoltz, Gosta – 1-0 – Schlage, Willi – G12 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 h6 9. Bh4 Qe7 10. Re1 Nd8
1929 Karlsbad – Round 1 – Treybal, Karel – 1/2-1/2 – Thomas, George Alan – G133 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 h6 9. Bh4 Kh8 10. d4 Qe7
1938 URSS (URS Ch, semi final) - Round 1 - Tolush, Alexander - 1/2-1/2 - Kasparian, Genrikh - G60 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 h6 9. Bh4 Ne7 10. Bxf6 gxf6
1942 Duras 60 Memorial – Round 6 – Podgorny, Jiri – 0-1 – Alekhine, Alexander – G26 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 h6 9. Bh4 Qe7 10. Re1 Nd8
1946 Pittsburgh Open – Round 1 – Bisguier, Arthur B – 1-0 – Evans, Larry M – G96 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 h6 9. Bh4 a6 10. Ba4 Qe7
1948 Karlovy Vary – Round 16 – Podgorny, Jiri – 0-1 – Richter, Edgar – G156 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 h6 9. Bc1 Ne7 10. Re1 c6
1948 Karlovy Vary – Round 19 – Opocensky, Karel – 0-1 – Stulik, Vlastimil – G184 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 h6 9. Bxf6 Qxf6 10. Bxc6 bxc6
1949 Oldenburg – Round 12 – Rautenberg, Wilhelm – 0-1 – Enevoldsen, Jens – G50 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 h6 9. Bh4 Qe7 10. d4 exd4
1949 URSS (URS Ch, semi final) - Round 1 - Khasin, Abram - 0-1 - Liublinsky, Victor - G210 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 h6 9. Bc1 Ne7 10. Re1 Bd7
1950 Moscow (URS-ch18) - Round ? - Sokolsky, Alexey - 1-0 - Alatortsev, Vladimir N. - 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 h6 9. Bh4 a6 10. Ba4 Qe7
1950 Moskou ch-URS – Round 1 – Sokolsky, Alexey – 1-0 – Alatortsev, Vladimir N. – G104 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 h6 9. Bh4 a6 10. Ba4 Qe7
1951 Hastings5152 – Round 4 – Barden, Leonard – 1/2-1/2 – Aabel Thomas Eapen – 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 h6 9. Bh4 Qe7 10. Re1 Bg4
1951 San Rafael – Round ? – Toran Albero, Roman – 1/2-1/2 – Letelier Martner, Rene – 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 h6 9. Bh4 Qe7 10. Nd2 Nd8
1955 Zagreb – Round 10 – Trifunovic, Petar – 1/2-1/2 – Matanovic, Aleksandar – G108 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 h6 9. Bh4 Nb8 10. d4 Qe7
1961 Moskou – Round 1 – Spassky, Boris V. – 1/2-1/2 – Smyslov, Vladimir – G84 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 h6 9. Bh4 a6 10. Bc4 Bg4
1962 Lasker Memorial – Round 13 – Minev, Nikolay N – 1/2-1/2 – Udovcic, Mijo – G24 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 h6 9. Bh4 Qe7 10. Re1 a6
1962 Varna olm – Round 4 – Myagmarsuren, Lkhamsuren – 1/2-1/2 – Minev, Nikolay N – G131 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 h6 9. Bh4 Qe7 10. h3 Na5
1968 Hungary – Round 1 – Szekely, Mihaly – 1-0 – Polgar, Istvan – G122 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 h6 9. Bh4 Nb8 10. d4 Qe7
1969 Novi Travnik (YUG Ch 24th) - Round 11 - Bertok, Mario Jr. - 1/2-1/2 - Parma, Bruno - G36 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 h6 9. Bh4 Qe7 10. Bxc6 bxc6
2008 Dagomys (TCh-RUS) - Round 7 - Andreikin, Dmitry - 1/2-1/2 - Zvjaginsev, Vadim - G193 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 h6 9. Bh4 Bd7 10. Qd2 a6
43. Olympiad 2018 – Round 11.11 – Popovic, Dusan – 0-1 – Radjabov, Teimour – G702 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 h6 9. Bh4 Qe7 10. Re1 a6
FIDE World Cup 2025 – Round R1 Classical 1 – Bellahcene Bilel – 1/2-1/2 – Huschenbeth Niclas – G50 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Nd5 Bc5 5. c3 O-O 6. d3 Nxd5 7. exd5 Ne7 8. Nxe5 Nxd5 9. d4 d6 10. Nc4 Re8+
Linares 1992 – Round 4 – Speelman, Jon S – 1/2-1/2 – Karpov, Anatoly – 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 h6 9. Bh4 Qe7 10. Re1 Nd8
Reykjavik ISL, 22th Open 2006 – Round 8 – Svidler, Peter – 1/2-1/2 – Svidler, Peter – G20 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 h6 9. Bh4 Kh8 10. Nd2 g5
Thessaloniki olm 1988 – Round 14 – Campora, Daniel H. – 0-1 – Anand, Viswanathan – G132 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 h6 9. Bh4 Bd7 10. d4 Qe7

C49m — Symmetrical (1901)

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 h6

Les coups candidats

9.Bh4 — 86.6% (621 parties)

Ambassadeurs : Schubert, Steffen (6x), Jovanovic, Bratislav M (5x), Short, Nigel D (5x), Splosnov, Sergei (4x), Saravanan, V. (3x), Slipak, Sergio (3x), Flear, Glenn C (3x), Dolana, Andrei-Theodor (3x)

9.Bc1 — 6.6% (47 parties)

Ambassadeurs : Vuilleumier, Alexandre (2x), Bazan, Osvaldo (1x), De Freitas, Marcio Elisio (1x), Campora, Daniel H. (1x), Jacobs, Byron A (1x), Canda, Danilo (1x), Weemaes, Ronald (1x), Bertok, Mario Jr. (1x)

9.Bxf6 — 2.8% (20 parties)

Ambassadeurs : Praveen, Prasad P. (2x), Cook, Roger S. (1x), Vassilaropoulos, Nicholas (1x), Rossmann, Andreas (1x), Van Bentum, Horst (1x), Jocyte, R (1x), Liobikiene, Asta (1x), Kofidis, Andreas (1x)

9.Bd2 — 2.5% (18 parties)

Ambassadeurs : Briggs, Philip J (2x), Bouchaud, Vincent (2x), Canda, Danilo (1x), Sieiro Gonzalez, Luis (1x), Gustavsson, Stellan (1x), George Lalremtluanga (1x), Jimenez, Pablo (1x), Haines, Duncan (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.Bh4	9.Bc1	9.Bxf6	9.Bd2
<1800	58	83%	9%	3%	—
1800-2200	248	86%	7%	2%	3%
2200-2600	304	89%	6%	2%	3%
2600+	20	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9.Bh4	9.Bc1	9.Bxf6	9.Bd2
1950s	6	100%	—	—	—
1960s	7	86%	14%	—	—
1970s	3	33%	33%	33%	—
1980s	12	75%	17%	—	8%
1990s	114	86%	7%	3%	4%
2000s	213	78%	11%	5%	3%
2010s	261	92%	3%	2%	2%
2020s	101	92%	4%	2%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.Bh4	92%	92%	-0.3%
9.Bc1	3%	4%	▲ +0.9%
9.Bxf6	2%	2%	+0.4%
9.Bd2	2%	1%	▼ -0.5%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 2 parties
Karpov, Anatoly — 1 partie

Parties historiques

9.Bh4 — 86.6% (621 parties)

1950 — Sokolsky, Alexey vs Alatortsev, Vladimir N. — 1-0 — Moskou ch-URS
1950 — Sokolsky, Alexey vs Alatortsev, Vladimir N. — 1-0 — Moscow RUS
1951 — Platz, Joseph vs Ampaire Josiah — 1-0 — New York, NY USA
1951 — Barden, Leonard vs Aabel Thomas Eapen — 1/2-1/2 — Hastings ENG
1951 — Toran Albero, Roman vs Letelier Martner, Rene — 1/2-1/2 — San Rafael

9.Bc1 — 6.6% (47 parties)

1960 — Bazan, Osvaldo vs De Freitas, Marcio Elisio — 1-0 — Sao Paulo BRA
1970 — Bertok, Mario Jr. vs ? — 1/2-1/2 — Bari it Bari ITA
1986 — Canda, Danilo vs Weemaes, Ronald — 1/2-1/2 — Dubai olm
1988 — Campora, Daniel H. vs Jacobs, Byron A — 1-0 — Lugano open
1992 — Joshuah Perez vs De La Paz Perdomo, Frank — 0-1 — Fuerteventura

9.Bxf6 — 2.8% (20 parties)

1971 — Cook, Roger S. vs Vassilaropoulos, Nicholas — 1-0 — Adelaide AUS
1990 — Kofidis, Andreas vs Zahilas, Loukas N. — 1/2-1/2 — ?
1992 — Rossmann, Andreas vs Van Bentum, Horst — 1/2-1/2 — Oberliga Nord N9192
1994 — Jocyte, R vs Liobikiene, Asta — 1/2-1/2 — Vilkaviskis
2000 — Schwaiger, Gerlind Luiza vs Brescak, Yvonne — 0-1 — Guessing

9.Bd2 — 2.5% (18 parties)

1986 — Canda, Danilo vs Sieiro Gonzalez, Luis — 1/2-1/2 — Havana CUB
1990 — Jimenez, Pablo vs Haines, Duncan — 1/2-1/2 — ESP
1995 — Briggs, Philip J vs Bouchaud, Vincent — 1-0 — Hastings Masters
1995 — Briggs, Philip J vs Bouchaud, Vincent — 1-0 — Hastings ENG
1999 — Gustavsson, Stellan vs George Lalremtluanga — 0-1 — IECG

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