B50i — Sicilian: 2.Nf3 d6 3.Nc3

1.e4 c5 2.Nf3 d6 3.Nc3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Attaque sur le roi adverse resté au centre.

Atouts. Les Blancs s'appuient sur les cases fortes b5 et d5 et la paire de fous.

Côté adverse. Les fous enfermés en c8 et f8 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (les fous c1 et f1 et les tours a1 et h1).

Plans. d3 (Libérer Bc1) ; Bd3 (Développer Bf1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Attaque sur le roi adverse resté au centre.

Atouts. Les Noirs s'appuient sur la paire de fous.

Côté adverse. Les fous enfermés en c1 et f1 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (les cavaliers b8 et g8, les fous c8 et f8 et les tours a8 et h8).

Plans. ...Nbd7 (Développer Nb8) ; ...Nf6 (Développer Ng8) ; ...Bg4 (Développer Bc8, clouer Nf3) ; ...c4 (Rupture) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

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

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 5)
Bc8		● Bc8 Non développé (mob. 5)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (● c1, ● f1, ● a1, ● h1)	6 (● b8, ● g8, ● 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	semi-ouvert
Ruptures	● d2-d3, ● e4-e5	● …c5-c4, ● …d6-d5, ● …e7-e6, ● …e7-e5, ● …f7-f6, ● …f7-f5

Partie
1935 Hastings3536 – Round 2 – Tylor, Theodore Henry – 0-1 – Fine, Reuben – G8 1. e4 c5 2. Nf3 d6 3. Nc3 e5 4. Bc4 Nc6 5. d3 Bg4 6. h3 Be6 7. Nd5 Be7 8. O-O Nf6 9. Ng5 Bxd5 10. exd5 Nb8
1938 Argentina – Round 13 – Pilnik, Herman – 1-0 – Iliesco, Juan – G60 1. e4 c5 2. Nc3 d6 3. Nf3 g6 4. d4 cxd4 5. Qxd4 f6 6. Be3 Nc6 7. Qd2 Be6 8. Nd4 Nxd4 9. Qxd4 Nh6 10. Bb5+ Kf7
1940 Rakovnik – Round 10 – Krticka F – 1/2-1/2 – Foltys, Jan – G57 1. e4 c5 2. Nf3 d6 3. Nc3 g6 4. d4 Nd7 5. g3 cxd4 6. Nxd4 Bg7 7. Bg2 Ngf6 8. O-O O-O 9. Nb3 Ne5 10. Qe2 Bg4
1949 Zagreb ch-YUG – Round 10 – Ivkov, Borislav – 1/2-1/2 – Pirc, Vasja – G8 1. e4 d6 2. Nc3 c5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 Nc6 6. Bb5 Rc8 7. O-O g6 8. d3 Bg7 9. Bg5 Nf6 10. Nd5 O-O
1958 WchT U26 prel-A 05th – Round 3 – Rawlings Tim – 0-1 – Nikolaevsky, Yuri V – G11 1. e4 d6 2. Nc3 c5 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 e5 6. Nb3 Be6 7. Be3 Nf6 8. Bb5 Be7 9. h3 a6 10. Bxc6+ bxc6
1959 Corr Wch3 – Round 1 – Balogh, Janos – 1/2-1/2 – Kjellander, Sven Erik Gunnar – G7 1. e4 c5 2. Nf3 d6 3. Nc3 e5 4. Bc4 Be7 5. O-O Nf6 6. d3 Nc6 7. Nd5 Nxd5 8. Bxd5 O-O 9. c3 Bf6 10. Be3 Bg4
1959 FRG Ch 05th – Round 12 – Schuster, Theodor – 1/2-1/2 – Lehmann, Heinz – G28 1. e4 c5 2. Nf3 d6 3. Nc3 e5 4. Bc4 Be7 5. Nd5 Nf6 6. Nxe7 Qxe7 7. d3 Nc6 8. Be3 Be6 9. Nd2 Ng4 10. Bxe6 Qxe6
1960 CSR Ch – Round 12 – Prucha, Karel – 1-0 – Kozma, Julius – G102 1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O e5 7. d3 Nge7 8. Nh4 h6 9. f4 exf4 10. gxf4 Nd4
1963 Budapest Ch – Round 1 – Cs. Kovacs, Laszlo – 1/2-1/2 – Felmeri, Janos – G31 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. a4 g6 5. g3 Bg7 6. Bg2 Nc6 7. d3 Nd4 8. Ne2 Nxf3+ 9. Bxf3 Nf6 10. c3 Rb8
1965 HUN-ch21 – Round 1 – Kovacs, Laszlo M – 0-1 – Csom, Istvan – G44 1. e4 c5 2. Nc3 d6 3. Nf3 e5 4. Bc4 Be7 5. d3 h6 6. Nd5 Nc6 7. c3 Nf6 8. Ne3 O-O 9. a3 Be6 10. Bd5 Qd7
1966 Rubinstein Memorial 04th – Round 14 – Sydor, Andrzej – 1-0 – Damjanovic, Marko – G81 1. e4 c5 2. Nf3 d6 3. Nc3 g6 4. d4 Nd7 5. Be3 cxd4 6. Nxd4 Ngf6 7. f3 Bg7 8. Bc4 Ne5 9. Bb3 Bd7 10. Qe2 Rc8
1967 Cordoba Open – Round 1 – Redolfi, Argentino Rodolfo – 1-0 – Marchetti Francisco – G2 1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. Bb5 Nf6 5. d3 Bd7 6. Bg5 e6 7. O-O Be7 8. Ne2 O-O 9. c3 a6 10. Ba4 e5
1967 Moscow – Round 1 – Keres, Paul Petrovich – 1/2-1/2 – Bilek, Istvan – G87 1. e4 c5 2. Nf3 d6 3. Nc3 g6 4. d4 cxd4 5. Qxd4 f6 6. Be3 Nh6 7. Bc4 Nc6 8. Qd2 Nf7 9. Nd4 Nxd4 10. Bxd4 Bg7
1967 YUG-URS – Round 11 – Ciric, Dragoljub M – 1/2-1/2 – ? – G31 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. a4 Nc6 5. d4 cxd4 6. Nxd4 Nf6 7. Bc4 e6 8. Be3 Be7 9. O-O O-O 10. Bb3 Bd7
1968 IBM-B – Round 1 – Van Geet, Dirk Daniel – 0-1 – Tatai, Stefano – G3 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. a3 e6 5. b4 Nf6 6. bxc5 dxc5 7. Bb2 Nc6 8. Bd3 Qc7 9. O-O Bd6 10. Re1 Ng4
1968 Lugano olm - Round 1 - Hynes, Anthony M - 0-1 - Parma, Bruno - G388 1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. d3 e5 7. O-O Nge7 8. Be3 O-O 9. Qd2 Nd4 10. Bh6 Be6
1968 New York ch-USA – Round 9 – Bisguier, Arthur B – 0-1 – Lombardy, William J – G49 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 Nc6 5. Bg2 Bg4 6. h3 Bxf3 7. Qxf3 e6 8. O-O Nf6 9. d3 Be7 10. g4 Nd7
1969 Hoogovens – Round 9 – Keres, Paul Petrovich – 1-0 – Kavalek, Lubomir – G74 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 g6 5. Bg2 Bg7 6. d4 cxd4 7. Nxd4 Nf6 8. O-O O-O 9. b3 Nbd7 10. Bb2 Nc5
1969 IBM I – Round 12 – Vasiukov, Evgeni – 1/2-1/2 – Byrne, Ray – G46 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 Nc6 5. Bg2 g6 6. d4 cxd4 7. Nxd4 Bg7 8. Be3 Rb8 9. O-O Nf6 10. h3 O-O
1970 Belgrade URS-World – Round 4.10 – Keres, Paul – 1-0 – Ivkov, Borislav – G16 1. e4 c5 2. Nf3 d6 3. Nc3 Bg4 4. h3 Bxf3 5. Qxf3 Nc6 6. g3 g6 7. Bg2 Bg7 8. O-O h5 9. d3 h4 10. g4 e5
1970 Palma de Mallorca Interzonal – Round 5 – Hort, Vlastimil – 0-1 – Fischer, Robert James Jamesames – G155 1. e4 c5 2. Nc3 d6 3. Nf3 a6 4. g3 Nc6 5. Bg2 Bg4 6. h3 Bxf3 7. Bxf3 g6 8. d3 Bg7 9. a4 e6 10. Bg2 Nge7
1970 Vinkovci – Round 4 – Parma, Bruno – 1/2-1/2 – Minic, Dragoljub – G63 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 Nc6 5. Bg2 e5 6. O-O g6 7. d3 Bg7 8. Nh4 Nh6 9. Bd2 O-O 10. Qc1 Ng4
1971 Moscow – Round ? – Kholmov, Ratmir D – 0-1 – Tal, Mihail – G120 1. e4 c5 2. Nc3 d6 3. Nf3 a6 4. a4 g6 5. Bc4 Bg7 6. d3 Nf6 7. h3 O-O 8. O-O Nc6 9. Re1 e5 10. Nd5 Nxd5
1971 Moscow – Round 17 – Tal, Mihail – 1-0 – Parma, Bruno – G218 1. Nf3 c5 2. e4 d6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 g6 6. Nd5 e6 7. Nc3 Nf6 8. Be2 a6 9. O-O Bg7 10. Bg5 Qc7
1972 San Antonio – Round 1 – Hort, Vlastimil – 0-1 – Portisch, Lajos – G64 1. e4 c5 2. Nf3 d6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6 6. O-O Nc6 7. a4 O-O 8. h3 h6 9. Be3 Be6 10. Nd2 d5
42. Olympiad 2016 – Round 11.19 – Sedlak, Nikola – 1/2-1/2 – Van Kampen, Robin – G774 1. e4 c5 2. Nc3 d6 3. Nf3 a6 4. g3 Bg4 5. Bg2 Nc6 6. h3 Bxf3 7. Bxf3 g6 8. d3 Bg7 9. Be3 Nf6 10. Qd2 O-O
Alekhine Memorial 1971 – Round 17 – Tal, Mikhail – 1-0 – Parma, Bruno – G48 1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 g6 6. Nd5 e6 7. Nc3 Nf6 8. Be2 a6 9. O-O Bg7 10. Bg5 Qc7
Bugojno 1982 – Round 1 – Ivanovic, Bozidar – 1-0 – Timman, Jan H – G51 1. e4 d6 2. Nc3 c5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 Nc6 6. Bb5 Rc8 7. O-O e6 8. Bxc6+ Rxc6 9. Rb1 Nf6 10. b4 cxb4
Corus 2001 – Round 1 – Timman, Jan H – 1/2-1/2 – Kramnik, Vladimir – G4 1. e4 c5 2. Nf3 d6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6 6. Bg5 O-O 7. Bxf6 Bxf6 8. Nd5 Nc6 9. a3 Rb8 10. c3 b5
Corus 2001 – Round 1 – Timman, Jan H – 1/2-1/2 – Kramnik, Vladimir – G5 1. e4 c5 2. Nf3 d6 3. Nc3 e5 4. Bc4 Nf6 5. d3 Be7 6. Bg5 O-O 7. Bxf6 Bxf6 8. Nd5 Nc6 9. a3 Rb8 10. c3 b5
FIDE World Cup 2025 – Round R1 Rapid 1 – Robert Hovhannisyan – 1/2-1/2 – Kavin Mohan – G154 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. a4 Bd7 9. c3 O-O 10. Ba2 h6
GCT Blitz Paris 2017 – Round 12.2 – Bacrot, Etienne – 1-0 – Karjakin, Sergey – G57 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 b5 5. Bg2 Bb7 6. d3 Nc6 7. O-O e6 8. Ng5 Nf6 9. f4 h6 10. Nh3 Be7
Herceg Novi blitz 1970 – Round 1 – Tal, Mikhail – 0-1 – Fischer, Robert James – G1 1. e4 c5 2. Nf3 d6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6 6. O-O Nc6 7. Ne1 O-O 8. f4 a6 9. a4 exf4 10. Bxf4 Be6
Interpolis 1979 – Round 2 – Romanishin, Oleg M – 1-0 – Timman, Jan H – G13 1. Nf3 c5 2. e4 d6 3. Nc3 a6 4. g3 Nc6 5. Bg2 Bg4 6. Nd5 e6 7. Ne3 Bh5 8. g4 Bg6 9. d3 h5 10. g5 h4
Region Blitz Moscow 2018 – Round 9.2 – Mamedov, Rauf – 0-1 – Nepomniachtchi, Ian – G6 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 Nc6 5. Bg2 Bg4 6. h3 Bxf3 7. Bxf3 g6 8. Bg2 Bg7 9. d3 Nf6 10. O-O O-O
Tata Steel Chess 2025 – Round 10 – Harikrishna Pentala – 1/2-1/2 – Caruana Fabiano – G58 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Qxd4 Nc6 6. Qe3 g6 7. Be2 Bh6 8. Qd3 Bg7 9. O-O Bg4 10. Bg5 h6
World Blitz 2016 – Round 9.10 – Naiditsch, Arkadij – 0-1 – Vachier-Lagrave, Maxime – G345 1. e4 c5 2. Nf3 d6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6 6. Nd2 O-O 7. Nf1 a6 8. a4 Bg4 9. f3 Be6 10. Ne3 Nc6
World Blitz 2017 – Round 15.7 – Artemiev, Vladislav – 1-0 – Andriasian, Zaven – G812 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 Nf6 5. e5 dxe5 6. Nxe5 Nbd7 7. Nf3 b6 8. Bg2 Bb7 9. O-O e6 10. Re1 Be7
World Blitz 2018 – Round 14.58 – Jumabayev, Rinat – 1-0 – Carlsson, Pontus – G854 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 Nc6 5. Bg2 g6 6. d4 cxd4 7. Nxd4 Bg7 8. Be3 Ne5 9. O-O Nf6 10. h3 O-O
World Blitz 2018 – Round 18.69 – Christiansen, Johan-Sebastian – 1-0 – Steinberg, Nitzan – G1093 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 g6 5. Bg2 Bg7 6. O-O Nc6 7. Re1 e6 8. a3 Nge7 9. Rb1 O-O 10. d3 b5
World Blitz 2018 – Round 19.19 – Anand, Viswanathan – 1-0 – Salem, A.R. Saleh – G1109 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 Nf6 5. Bg2 e6 6. O-O Be7 7. e5 dxe5 8. Nxe5 O-O 9. a4 Nbd7 10. Nc4 Nb6
World Blitz 2018 – Round 7.4 – Mamedov, Rauf – 1/2-1/2 – Artemiev, Vladislav – G423 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 g6 5. Bg2 Bg7 6. O-O Nc6 7. d3 Nf6 8. Re1 Nd7 9. Be3 O-O 10. Qd2 Nd4
World Blitz 2021 – Round 7.11 – Mamedov, Rauf – 0-1 – Ivic, Velimir – G387 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 Nf6 5. e5 dxe5 6. Nxe5 Qd6 7. Nf3 Nc6 8. Bg2 g6 9. O-O Bg7 10. d3 O-O
World Blitz 2023 – Round 13.51 – Hovhannisyan, Razmik – 1-0 – Fayzullaev, Akmal – G766 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Qxd4 Nc6 6. Qd3 g6 7. Be3 Bg7 8. Nd5 Rb8 9. Bb6 Qd7 10. Be2 Nf6
World Blitz 2023 – Round 15.14 – Praggnanandhaa R – 1-0 – Sjugirov, Sanan – G845 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Qxd4 Nf6 6. Nd5 Nc6 7. Nxf6+ gxf6 8. Qd3 f5 9. exf5 Qa5+ 10. Bd2 Qxf5
World Blitz 2023 – Round 17.23 – Mamedov, Rauf – 1/2-1/2 – Makarian, Rudik – G969 1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. d3 e5 7. a3 a5 8. Nd2 Nge7 9. Nc4 Nd4 10. a4 h5
World Blitz 2023 – Round 2.13 – Praggnanandhaa R – 1-0 – Muradli, Mahammad – G81 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Qxd4 Nc6 6. Qe3 Bg4 7. h3 Bxf3 8. Qxf3 g6 9. Bd3 Bg7 10. O-O Nf6

B50i —

1.e4 c5 2.Nf3 d6 3.Nc3

Les coups candidats

3…Nf6 — 58.5% (11040 parties) →

Ambassadeurs : Mamedov, Rauf (51x), Kupreichik, Viktor D (46x), Movsesian, Sergei (32x), Hauser, Siegfried (29x), Ostos, Julio Eduardo (26x), Davidson, Jamie P (23x), Vasiukov, Evgeni (22x), Janisch, Manfred (22x)

3…Nc6 — 18.2% (3435 parties)

Ambassadeurs : Kupreichik, Viktor D (20x), Vasiukov, Evgeni (12x), Galego, Luis (10x), Miles, Anthony J (8x), Parma, Bruno (8x), Westerinen, Heikki M.J. (8x), Movsesian, Sergei (8x), Gyimesi, Jen (7x)

3…a6 — 13.9% (2630 parties)

Ambassadeurs : Browne, Walter Shawn (10x), Popovic, Petar (10x), Mestel, A Jonathan (10x), Matikozian, Andranik (10x), Goncharenko, Georgy (10x), Tatai, Stefano (9x), ? (9x), Parma, Bruno (8x)

3…g6 — 3.2% (596 parties)

Ambassadeurs : Brodie, Hugh (3x), Whiteley, Andrew J (3x), Boonen, Piet (3x), Osterkamp Johannes (3x), Zentgraf, Robert (3x), Kahn, Evarth Dr. (3x), Matikozian, Andranik (3x), Healey, Michael W (3x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	3…Nf6	3…Nc6	3…a6	3…g6
<1800	1028	54%	22%	12%	5%
1800-2200	5375	60%	18%	12%	3%
2200-2600	6333	62%	14%	18%	1%
2600+	363	70%	10%	17%	0%

Évolution par décennie (% des parties)

Décennie	N parties	3…Nf6	3…Nc6	3…a6	3…g6
1840s	1	—	—	—	—
1920s	1	100%	—	—	—
1930s	11	55%	—	—	18%
1940s	11	73%	9%	—	9%
1950s	28	61%	18%	7%	4%
1960s	172	55%	13%	19%	5%
1970s	673	36%	20%	31%	3%
1980s	528	48%	18%	20%	4%
1990s	2825	54%	23%	11%	5%
2000s	5784	58%	20%	12%	4%
2010s	6567	61%	17%	14%	2%
2020s	2272	67%	12%	15%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
3…Nf6	61%	67%	▲ +6.1%
3…Nc6	17%	12%	▼ -4.7%
3…a6	14%	15%	▲ +1.1%
3…g6	2%	1%	▼ -1.3%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 8 parties
Anand, Viswanathan — 7 parties
Carlsen, Magnus — 7 parties
Hou, Yifan — 5 parties
Gukesh D — 5 parties
Kramnik, Vladimir — 3 parties
Kasparov, Garry — 2 parties
Karpov, Anatoly — 2 parties
Karpov, Aleksandr — 1 partie
Euwe, Max — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

3…Nf6 — 58.5% (11040 parties)

1929 — Bogoljubow, Efim vs Canal, Esteban — 1/2-1/2 — Carlsbad CZE
1930 — Vistaneckis, Isakas vs Van den Bosch, Johannes — 1/2-1/2 — Hamburg GER
1930 — Lafora, Carlos vs Van den Bosch, Johannes — 0-1 — Hamburg GER
1931 — Yates, Frederic D vs Noteboom, Daniel — 1/2-1/2 — Prague CZE
1937 — Rabinovich, Ilya Mar vs Kan, Ilya A — 1-0 — Tbilisi ch-URS

3…Nc6 — 18.2% (3435 parties)

1948 — Pocknell, Audrey vs Craker, Jean — 1-0 — London, St. Bride's Institute
1950 — Tartakower, Savielly vs Newman Caceres, Reynaldo Adolfo — 1/2-1/2 — Southsea ENG
1951 — Grob, Henry vs Paoli, Enrico — 1/2-1/2 — Bad Pyrmont GER
1957 — Keres, Paul vs Acosta Cuellar, Juan Martin — 1-0 — Mar del Plata ARG
1958 — Tarazi, Andre vs Borja, Meliton — 0-1 — Munich olm fin-C

3…a6 — 13.9% (2630 parties)

1950 — Reshevsky, Samuel vs Dygert, Bert — 0-1 — Springfield,MA simul
1958 — Denis Francisco vs Munoz, Francisco — 0-1 — Bogota COL
1960 — Arias Gordon, Juan Antonio vs Bender, Albrecht — 0-1 — Fresno, CA
1960 — Cucka, Josef vs Hort, Vlastimil — 1/2-1/2 — Ostrava CZE
1962 — Danilov, George vs Witt, Laszlo — 0-1 — Ottawa CAN

3…g6 — 3.2% (596 parties)

1937 — Zawadzki, Stanislaw vs Friedmann Henryk — 1-0 — Jurata ch POL
1938 — Pilnik, Herman vs Iliesco, Juan — 1-0 — Argentina
1940 — Krticka F vs Foltys, Jan — 1/2-1/2 — Rakovnik
1951 — Richter Becerra, Hans vs Achatz Karl Hans — 1-0 — Leipzig GER
1960 — Bartlett, Jeffrey T vs Collins, Richard Arnold — 1-0 — Hayes

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