Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (3v0)	● b4 (2v0)
Cases faibles	—	—
Centre	● d5 (3v0)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 2)
Bf1	● Bf1 Non développé (mob. 2)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	6 (● b1, ● g1, ● c1, ● f1, ● a1, ● h1)	5 (● b8, ● c8, ● f8, ● 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	mobile
Ruptures	—	● …d7-d5, ● …f7-f5

A52d — Budapest: Alekhine, Abonyi Variation

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 Nxe5 5.f4 Nec6 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Be3 (Fou actif (mobilité 7), Développer c1 — 64 % des parties) ; Nf3 (Développer g1 — 20 % des parties) ; a3 (Préparer expansion aile dame — 8 % des parties) ; Nc3 (Développer b1 — 8 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Bb4+ (Fou actif (mobilité 9), Développer f8 — 46 % des parties) ; ...Bc5 (Fou actif (mobilité 10), Développer f8 — 24 % des parties) ; ...Na6 (Développer b8 — 13 % des parties) ; ...a5 (9 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1923 Karlsbad – Round 10 – Yates, Frederic D – 1-0 – Spielmann, Rudolf – G115 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nf3 Bc5 7. Nc3 d6 8. Bd3 O-O 9. a3 a5 10. Qe2 Bg4
1925 Debrecen – Round 1 – Asztalos, Lajos – 1/2-1/2 – Seitz, Jakob Adolf – G15 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qe7 8. Bd3 f5 9. Qf3 fxe4 10. Bxe4 Bxc3+
1925 Hastings – Round 1 – Alekhine, Alexander – 1-0 – Zeic, Bogdan – G3 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qe7 8. Bd3 f5 9. Qh5+ g6 10. Qf3 Bxc3+
1925 Hastings Premier /26 6th – Round 5 – Alekhine, Alexander – 1-0 – Seitz, Alexander – G9 1. c4 Nf6 2. d4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qe7 8. Bd3 f5 9. Qh5+ g6 10. Qf3 Bxc3+
1926 Budapest – Round 1 – Bakonyi, Elek – 1-0 – Havasi, Kornel – G5 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nc3 Bb4 7. Bd2 Qe7 8. Bd3 Na6 9. Nge2 Qh4+ 10. g3 Qh3
1926 Budapest – Round 1 – Steiner, Endre – 1-0 – Vajda, Arpad – G6 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 Be7 7. Nf3 d6 8. Nc3 Bg4 9. Be2 Bh4+ 10. g3 Bf6
1926 Budapest – Round 1 – Sterk, Karoly – 0-1 – Steiner, Endre – G7 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 d6 7. Nc3 g6 8. Be3 Bg7 9. Bd3 Nd4 10. Bxd4 Bxd4
1926 Budapest – Round 1 – Vajda, Arpad – 0-1 – Steiner, Endre – G3 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 d6 7. b4 Be7 8. Bb2 O-O 9. Nc3 f5 10. Qd5+ Kh8
1926 Budapest – Round 13 – Vajda, Arpad – 1/2-1/2 – Havasi, Kornel – G73 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 d6 7. Nc3 Be7 8. Nf3 Bf6 9. Be2 O-O 10. O-O Re8
1926 Budapest Budapest HUN – Round 7 – Kmoch, Hans – 1-0 – Monticelli, Mario – G12 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Bxc3+ 8. bxc3 Qe7 9. Bd3 Na6 10. Ne2 Nc5
1926 Semmering – Round 1 – Alekhine, Alexander – 0-1 – Gilg, Karl – G28 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 a5 7. Nc3 Bc5 8. Nd5 O-O 9. Bd3 d6 10. Qh5 Nd7
1926 Semmering – Round 1 – Kmoch, Hans – 0-1 – Reti, Richard – G26 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 a5 7. Be3 Na6 8. Nf3 Bc5 9. Qd2 d6 10. Nc3 O-O
1926 Semmering Panhans – Round 1 – Tarrasch, Siegbert – 1-0 – Vajda, Arpad – G4 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 a5 7. Be3 Na6 8. Bd3 Bc5 9. Qd2 Qh4+ 10. g3 Qe7
1926 Vienna – Round 1 – Gruenfeld, Ernst – 1-0 – Rethy, Pal – G2 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 d6 8. Bd3 Bxc3+ 9. bxc3 O-O 10. Nf3 f5
1927 Kecskemet f I – Round 1 – Gilg, Karl – 0-1 – Vajda, Arpad – G1 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 a5 7. Nc3 Bc5 8. Nd5 O-O 9. Bd3 d6 10. Qh5 Nd4
1928 Lasker Memorial – Round ? – Johner, Paul – 1/2-1/2 – Weggemans, Mitchell – G7 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qh4+ 8. g3 Bxc3+ 9. bxc3 Qe7 10. Bd3 d6
1928 Scarborough – Round 3 – Michell, Reginald – 1-0 – Wenman, Francis Percival – G7 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qe7 8. Bd3 f5 9. Qf3 fxe4 10. Bxe4 Bxc3+
1929 Barcelona Barcelona ESP – Round 9 – Yates, Frederic D – 1/2-1/2 – Torres, Cristian – G25 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nf3 Bc5 7. Bd3 d6 8. Nc3 O-O 9. Qe2 Nd7 10. Be3 Bxe3
1929 NED-ch07 – Round 4 – Geus, Klaas – 0-1 – Van den Bosch, Johannes – G9 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 g6 7. Nc3 Bg7 8. Qd2 d6 9. Be2 Nd7 10. Rd1 O-O
1933 GER Ch 01st – Round 5 – Weissgerber, Gerhard – 1-0 – Leonhardt, Paul – G5 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 a5 7. Be3 Na6 8. Bd3 Bc5 9. Qe2 d6 10. Nc3 O-O
1934 Copenhagen – Round 1 – Enevoldsen, Harald – 1-0 – Bauer, Adam – G10 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 d6 7. Nc3 Nd7 8. Nf3 Nf6 9. Bd3 Bg4 10. O-O Qd7
1935 Leningrad – Round 1 – Alatortsev, Vladimir N. – 1-0 – Lilienthal, Andor – G2 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qe7 8. Bd3 Na6 9. Ne2 O-O 10. O-O Bc5
1935 Lodz IT – Round 6 – Kolski, Josek – 1-0 – Opocensky, Karel – G8 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Na6 7. Nc3 Bc5 8. Qd2 d6 9. Nf3 Bg4 10. Be2 O-O
1936 Mar del Plata – Round 10 – Letelier Martner, Rene – 0-1 – Iliesco, Juan – G70 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nf3 Bc5 7. a3 a5 8. Nc3 d6 9. Qd3 O-O 10. Be3 Na6
1936 UJCS-14.Kongress – Round 5 – Gilg, Karl – 1-0 – Grguric, Viktor – G11 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 Bc5 7. Nf3 a5 8. Nc3 d6 9. Qd3 O-O 10. Be3 Nd7
1937 Bad Saarow – Round 2 – Weichert, P – 0-1 – Richter, Kurt – G5 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Na6 7. Nf3 Bc5 8. Qd2 O-O 9. Nc3 d6 10. O-O-O Re8
1937 POL Ch – Round 5 – Frydman Achilles – 1/2-1/2 – Foltys, Jan – G8 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nd2 Qh4+ 8. g3 Qe7 9. Bg2 Na6 10. a3 Bc5
1937 Prague – Round 1 – Keres, Paul – 1-0 – Gilg, Karl – G2 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Bd3 Bb4+ 7. Nc3 Qh4+ 8. g3 Qe7 9. Be3 Bxc3+ 10. bxc3 Na6
1937 Prague – Round 5 – Keres, Paul – 1-0 – Gilg, Karl – G25 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qh4+ 8. g3 Bxc3+ 9. bxc3 Qe7 10. Bd3 Na6
1937 Trebitsch mem3738 – Round 8 – Mueller, Hans – 1-0 – Donegan, Alfred – G30 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qh4+ 8. g3 Bxc3+ 9. bxc3 Qe7 10. Bd3 d6
1942 Mar del Plata – Round 2 – Luckis, Marcos – 1-0 – Michel, Pascal – G23 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nd2 Qe7 8. Bd3 Na6 9. Nf3 Nc5 10. Qc2 Bxd2+
1944 Gijon – Round 1 – Alekhine, Alexander – 1-0 – Caballero Gallego, Luis – G1 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 d6 7. Nf3 Nd7 8. Nc3 Nf6 9. Bd3 Be7 10. O-O O-O
1945 Vina del Mar – Round 11 – Salas Romo, Julio – 1-0 – Appel, Heriberto – G36 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nd2 b6 8. Nf3 Qe7 9. Be2 Qxe4 10. Kf2 Qe7
1946 USA Ch New York, NY USA – Round 1 – Kramer, George – 1/2-1/2 – Rubinow, Sol – G13 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nf3 Bc5 7. Nc3 d6 8. f5 h6 9. Bf4 Nd7 10. Qd2 Bb4
1948 Budapest – Round 2 – Wood, Baruch – 1-0 – Bakonyi, Elek – G11 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nf3 Bc5 7. Nc3 d6 8. Bd3 O-O 9. Qe2 Bg4 10. Be3 Nd4
1949 BUL Ch – Round 6 – Kolarov, Atanas Stefanov – 1-0 – Hinkov, Stefan – G27 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Na6 7. Nc3 Bc5 8. Qd2 O-O 9. O-O-O d6 10. Nf3 Qe8
1951 Marianske Lazne zt – Round 15 – Balanel, Ion – 1/2-1/2 – Heidenfeld, Wolfgang – G106 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qh4+ 8. g3 Bxc3+ 9. bxc3 Qe7 10. Bg2 d6
1953 Wch U20 qual – Round 3 – Scafarelli, Francesco – 1-0 – Petri, Bernd – G9 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nd2 Qe7 8. Qf3 d6 9. Bd3 O-O 10. a3 Bxd2+
1954 Olympiad final B – Round 12 – Scafarelli, Francesco – 1-0 – Lemaire De Wit, Raphael – G73 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Qh4+ 8. g3 Bxc3+ 9. bxc3 Qe7 10. Bg2 Na6
1955 Clare Benedict Cup – Round 4.1 – Golombek, Harry – 1/2-1/2 – Lemaire, Robert – G23 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nd2 Qh4+ 8. g3 Qe7 9. Bd3 Na6 10. Qf3 d6
1960 GBR Ch 47th – Round 11.8 – Hollis, Adrian – 1-0 – Thomas Andrew – G97 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 a5 7. Nc3 Na6 8. Nf3 Bc5 9. Qd2 d6 10. Bd3 f5
1963 Enschede zt – Round 14 – Pomar Salamanca, Arturo – 1-0 – Heidenfeld, Wolfgang – G68 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nd2 Qh4+ 8. g3 Qe7 9. Bg2 a5 10. Ne2 Na6
1963 Leipzig Open 6364 2nd – Round 4 – Moehring, Guenther – 1-0 – Starck, Bodo – G20 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 a5 7. Be3 Na6 8. Nf3 Bc5 9. Qd2 d6 10. h3 O-O
1963 Leipzig Open 6364 2nd – Round 6 – Kollberg, Lothar – 1-0 – Starck, Bodo – G33 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. a3 a5 7. Be3 Na6 8. Bd3 Bc5 9. Qd2 d6 10. Nc3 O-O
1966 Aarhus – Round 9 – Andersen, Borge – 1/2-1/2 – Pedersen, Eigil – G48 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Na6 8. Nf3 Qe7 9. Bd3 Bxc3+ 10. bxc3 Nc5
1966 La Habana olm fin-B – Round 11 – Cuartas, Carlos Enrique – 0-1 – O'Kelly, Albéric de Galway – G160 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nf3 Bc5 7. Nc3 d6 8. f5 Nd7 9. Bg5 f6 10. Bf4 Bb4
1966 WchT U26 fin-A 13th – Round 3 – Brander, Ilmari – 1/2-1/2 – Segal, Alexandru Sorin – G4 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Na6 7. Nf3 Bc5 8. Bxc5 Nxc5 9. Nc3 d6 10. Be2 O-O
1967 DEN Ch – Round 2 – Jakobsen, Ole – 0-1 – Pedersen, Eigil – G4 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Bxc3+ 8. bxc3 Qe7 9. Nf3 d6 10. Qd2 Nd7
1967 ROM Ch – Round 11 – Fischer, Johann – 1/2-1/2 – Segal, Alexandru Sorin – G73 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Na6 7. Nc3 Bc5 8. Bxc5 Nxc5 9. Qh5 d6 10. O-O-O O-O
1967 ROM Ch – Round 2 – Partos, Charles – 1/2-1/2 – Gheorghiu, Florin – G8 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nc3 Bc5 7. Nf3 d6 8. Bd3 Bg4 9. h3 Bxf3 10. Qxf3 Nd7
1968 Olympiad Lugano SUI – Round 1 – Castro, Oscar H – 0-1 – Drimer, Dolfi – G2 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nf3 Bb4+ 7. Nc3 Qe7 8. Bd3 Na6 9. O-O Bxc3 10. bxc3 Nc5
Bosna SuperGM 2000 – Round 11 – Bacrot, Etienne – 0-1 – Shirov, Alexei – G53 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Nf3 Bc5 7. Nc3 O-O 8. f5 d6 9. Bg5 f6 10. Bf4 Re8

A52d — Budapest Defense, Alekhine Variation, Abonyi Variation (1923)

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 Nxe5 5.f4 Nec6

Les coups candidats

6.Be3 — 63.9% (639 parties)

Ambassadeurs : Heidenfeld, Wolfgang (3x), Thier, Juergen (3x), Cecil, Pavel (3x), Netzer, Norbert (3x), Rezek, Jakub (3x), Ilandzis, Spyridon (3x), Lemaire, Robert (2x), Borisenko-Belova, Valentina (2x)

6.Nf3 — 20.1% (201 parties)

Ambassadeurs : Novikov, Igor (3x), Plumat, Thibaud (2x), Plymate Roma (2x), Zanetti, Bruno (2x), Stajcic, Nikola M (2x), Kutscheid, Hans Peter (2x), Runge, Berthold (1x), Schoenherr, Helmut (1x)

6.a3 — 8.0% (80 parties)

Ambassadeurs : Lukas, Norbert (3x), Schebler, Gerhard (3x), Starck, Bodo (2x), Frohne, Gerd (2x), Lorscheid, Gerhard (2x), Mester, Gyula (2x), Schmelz, Thomas (2x), Corbat, Philippe (2x)

6.Nc3 — 7.5% (75 parties)

Ambassadeurs : Haik, Aldo (2x), Sharevich, Anna (2x), Stranz, Richard (2x), Rudoff, Paul (1x), Fuchs, Bruce (1x), Heikkila, Heikki (1x), Petri, Bernd (1x), Partos, Charles (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.Be3	6.Nf3	6.a3	6.Nc3
<1800	60	72%	15%	3%	10%
1800-2200	449	66%	19%	7%	8%
2200-2600	222	59%	20%	9%	11%
2600+	4	—	100%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	6.Be3	6.Nf3	6.a3	6.Nc3
1950s	18	83%	11%	—	6%
1960s	23	65%	13%	13%	9%
1970s	16	62%	25%	12%	—
1980s	93	61%	23%	12%	3%
1990s	312	64%	21%	12%	2%
2000s	271	69%	22%	6%	2%
2010s	173	73%	18%	4%	5%
2020s	94	28%	15%	4%	52%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.Be3	73%	28%	▼ -45.8%
6.Nf3	18%	15%	▼ -3.0%
6.a3	4%	4%	+0.2%
6.Nc3	5%	52%	▲ +47.5%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 1 partie

Parties historiques

6.Be3 — 63.9% (639 parties)

1951 — Balanel, Ion vs Heidenfeld, Wolfgang — 1/2-1/2 — Marianske Lazne zt
1952 — Kwilecki, Andrzej vs Dreszer, J. — 1-0 — Olsztyn
1953 — Shocron, Ruben vs Benko, Francisco — 0-1 — Buenos Aires ARG
1953 — Scafarelli, Francesco vs Petri, Bernd — 1-0 — Copenhagen DEN
1954 — Harman, Tracy vs Starosolski, R. — 1-0 — England

6.Nf3 — 20.1% (201 parties)

1954 — Nielsen, Palle vs Lemaire, Robert — 0-1 — Amsterdam olm
1957 — Runge, Berthold vs Schoenherr, Helmut — 1-0 — Zittau
1966 — Cuartas, Jaime Alexander vs O'Kelly, Albéric de Galway — 0-1 — Havana olm
1966 — Zeitler, Hans-Juergen vs Cabarkapa, Milenko — 0-1 — Bad Timmendorf
1968 — De Castro, Edgar vs Drimer, Dolfi — 0-1 — Lugano olm

6.a3 — 8.0% (80 parties)

1961 — Piskov, Kamen vs Kostov, Petko — 1/2-1/2 — ?
1963 — Moehring, Guenther vs Starck, Bodo — 1-0 — Leipzig GER
1963 — Kollberg, Lothar vs Starck, Bodo — 1-0 — Leipzig GER
1978 — Gneuss, Werner vs Poetzschmann, Rolf — 1-0 — ?
1979 — Sandvik, Carl vs Pitkaranta, Tauno — 1-0 — corr NS/ME

6.Nc3 — 7.5% (75 parties)

1953 — Heikkila, Heikki vs Petri, Bernd — 1/2-1/2 — Copenhagen DEN
1967 — Rudoff, Paul vs Fuchs, Bruce — 1-0 — Philadelphia USA Amat
1967 — Partos, Charles vs Gheorghiu, Florin — 1/2-1/2 — Bucharest ROU
1985 — Sahovic, Dragutin vs Haik, Aldo — 1-0 — Pancevo
1986 — Neverov, Valeriy vs Legky, Nikolay A — 1-0 — UKR-ch Kiev UKR

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