B99r — Sicilian: Najdorf, Main Line, 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.a3

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.a3 * ● 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 une majorité de pions à l'aile_dame (3 contre 2) et la colonne semi-ouverte d.

Côté adverse. Le fou enfermé en c8 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le fou f1 et la tour h1).

Plans. Bd3 (Développer Bf1).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte c5.

Atouts. Les Noirs s'appuient sur une majorité de pions à l'centre (2 contre 1), les cases fortes c4 et c5, un avant-poste en c5, un fou actif en e7, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Le fou enfermé en f1.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le fou c8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...d5 (Rupture) ; ...e5 (Rupture) ; ...f6 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→a3, f4→g5	● a6→b5, f7→e6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● c4 (2v1), ● c5 (3v0)
Cases faibles	—	—
Centre	● d4 (1v0), ● d5 (2v1), ● e4 (2v0)	● e5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 6)
Be7		● Be7 Actif (mob. 4)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	Non	● Oui
Non développées	2 (● f1, ● h1)	3 (● c8, ● 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	● e4-e5, ● f4-f5	● …d6-d5, ● …e6-e5, ● …f7-f6, ● …f7-f5

Partie
1959 Candidats Tournament – Round 11 – Gligoric, Svetozar – 1-0 – Fischer, Robert J – G41 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1959 New York ch-USA – Round 6 – Sherwin, James T – 1/2-1/2 – Fischer, Raphael – G33 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1960 Budapest zt – Round 11 – Kostro, Jerzy – 0-1 – Matanovic, Aleksandar – G62 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1960 Leipzig olm prel – Round 5 – O'Kelly de Galway, Alberic – 1/2-1/2 – Fischer, Robert J – G174 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1960 Ljubljana – Round 16 – Gligorić, Svetozar – 1/2-1/2 – Bertok, Mario Jr. – G106 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1960 Mar del Plata – Round 8 – Olafsson, Fridrik – 1-0 – Gadia, Okicio – G72 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1960 Mar del Plata – Round 8 – Spassky, Boris Vasily – 1-0 – Eliskases, Erich – G71 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1961 Mar del Plata – Round 1 – Silva Nazzari, Roberto – 1/2-1/2 – Quinones Carrillo, Oscar – G23 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1961 ROM Ch – Round 10 – Puscasiu, Octavian – 1/2-1/2 – Ghitescu, Theodor – G64 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1961 URU Ch – Round ? – Alvarez del Monte, Jose – 0-1 – Benitez, Otto – G10 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1962 Capablanca Memorial – Round 5 – Matanovic, Aleksandar – 0-1 – Cobo Arteaga, Eldis – G47 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1962 Paris FRA – Round ? – Druon, Roger – 1-0 – Huguet, Bernard – G11 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1963 Alekhine Memorial – Round 6 – Tal, Mikhail – 1-0 – Gligorić, Svetozar – G40 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1964 Amsterdam Interzonal – Round 13 – Tringov, Georgi P – 1/2-1/2 – Reshevsky, Samuel – G124 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8. Qf3 Qc7 9. O-O-O Be7 10. g4 b5
1964 Amsterdam Interzonal – Round 6 – Gligorić, Svetozar – 1-0 – Tringov, Georgi P – G58 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8. Qf3 Qc7 9. O-O-O Be7 10. g4 b5
1964 Hastings6465 – Round 9 – Hindle, Owen M – 1-0 – Gligorić, Svetozar – G40 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1964 Stevenson Memorial 12th – Round 7 – Hartston, William R – 1-0 – May, Alan K – G22 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1964 WchT U26 11. fin-A – Round 1.2 – Schmidt, Wlodzimierz – 1/2-1/2 – Savon, Vladimir A – G10 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1965 ARG Ch – Round 5 – Emma, Jaime – 0-1 – Sanguineti, Raúl Carlos – G2 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1965 Bognor Regis-A – Round ? – Hindle, Owen M – 1/2-1/2 – Doney, RA. – G25 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1965 Buenos Aires – Round 9 – Scanavino, Eduardo – 0-1 – Najdorf, Miguel – G55 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8. Qf3 Qc7 9. O-O-O Be7 10. g4 b5
1965 Central Chess Club Ch sf – Round ? – Estrin, Yakov – 1/2-1/2 – Lepeshkin, Vladimir – G10 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1965 Hastings6566 – Round 4 – Lee, Peter N – 0-1 – Littlewood, Norman – G17 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1965 Novi Sad – Round 1 – Parma, Bruno – 0-1 – Buljovcic, Ivan – G9 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Nbd7 9. O-O-O Qc7 10. g4 b5
1965 Novi Sad – Round 13 – Buljovcic, Ivan – 1-0 – Bertok, Mario Jr. – G105 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Nbd7 9. O-O-O Qc7 10. g4 b5
1965 Novi Sad – Round 16 – Djurovic, Dejan – 1/2-1/2 – Buljovcic, Ivan – G132 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1965 Novi Sad – Round 18 – ? – 1/2-1/2 – Buljovcic, Ivan – G146 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1965 Novi Sad – Round 7 – Gligorić, Svetozar – 1/2-1/2 – Bertok, Mario Jr. – G61 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1965 Sarajevo – Round 11 – Tringov, Georgi P – 1-0 – Bogdanovic, Radivoje – G76 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1966 La Habana olm fin-B – Round 13 – Hindle, Owen M – 1/2-1/2 – Huguet, Bernard – G54 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1966 La Habana olm prel – Round 4 – Hartston, William R – 1-0 – Larrain Cadaiz, Eugenio – G147 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1966 Sarajevo Sarajevo BIH – Round 1 – Matulovic, Milan – 1/2-1/2 – Bogdanovic, Rajko – G4 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1967 Rubinstein Memorial – Round 12 – Kostro, Jerzy – 1/2-1/2 – Adamski, Jan – G36 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1968 Corr – Round 1 – De Sortis Sergio – 1/2-1/2 – Palmiotto, Fiorentino – G14 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 e6 8. Qf3 Qc7 9. O-O-O Be7 10. g4 b5
1968 Golden Knights – Round ? – Zalys, Ignas – 1-0 – Prattes, Peter – G5 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1968 Imperia Open – Round ? – Casa, Alex – 0-1 – Bouaziz, Slim – G10 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1968 Solingen – Round 12 – Capelan, Guenter – 1/2-1/2 – Tatai, Stefano – G51 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1968 Wch7 sf2 corr – Round ? – Richter, Jacob – 1/2-1/2 – Salm, Maxwell – G5 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1968 Wch7 sf2 corr – Round ? – Sadger, P – 0-1 – Salm, Maxwell – G6 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1969 Corr – Round ? – Herrmann Ralf – 0-1 – Maeder, Karl-Heinz – G9 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1969 IBM-B – Round 11 – Diez del Corral, Jesus – 1-0 – Maeder, Karl-Heinz – G58 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1969 Monte Carlo-B – Round 3 – Huguet, Bernard – 1/2-1/2 – Tatai, Stefano – G13 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1969 POL Ch 26th – Round 12 – Kostro, Jerzy – 1/2-1/2 – Adamski, Jan – G59 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1969 YUG Ch 24th – Round 4 – Planinec, Albin – 0-1 – Bukic, Enver – G13 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1970 IBM – Round 15 – Adorjan, Andras – 1-0 – Hamann, Slawomir – G107 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1970 IBM – Round 5 – Adorjan, Andras – 1-0 – Tatai, Stefano – G106 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
1975 URS Team Ch – Round 5 – Nevednichy, Boris M – 0-1 – Agzamov, Georgy – G276 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5
Moscow Interzonal 1982 – Round 2 – Van der Wiel, John T.H. – 0-1 – Andersson, Ulf 1949 – G8 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5

B99r — Najdorf Main Line

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.a3

Eval: [-0.02]

Les coups candidats

13…Rb8 — 79.4% (595 parties)

Ambassadeurs : Maeder, Karl-Heinz (10x), Guizar, Clemente Dr (8x), Burridge, Raymond John (8x), Lepeshkin, Vladimir (6x), Manik, Mikulas (5x), Korchut, Adam (5x), Buljovcic, Ivan (4x), Salm, Maxwell (4x)

13…Bb7 — 16.6% (124 parties)

Ambassadeurs : Campbell, Franklin J (2x), Fischer, Robert J (2x), Huguet, Bernard (2x), Matanovic, Aleksandar (2x), Kostro, Jerzy (2x), Tiemann, Christoph (2x), Gligorić, Svetozar (2x), Klaic, Pero (2x)

13…Nb6 — 1.5% (11 parties)

Ambassadeurs : Vazquez Dante P (4x), Mujica, Del Valle Jorge Arturo (1x), Gimenez, G Gustavo (1x), Bergdahl, Assar (1x), Runstrom, Harry (1x), Unzicker, Wolfgang (1x), Donner, Jan-Hein (1x), Engel, Klaus Eberhard Dr (1x)

13…Nc5 — 1.2% (9 parties)

Ambassadeurs : Schmidt, Wlodzimierz (1x), Savon, Vladimir A (1x), Dimitrov, Vladimir (1x), Ljangov, Petar (1x), Feher, Gyula (1x), Hradeczky, Tamas (1x), Timm, Jasper (1x), Street, Frank (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	13…Rb8	13…Bb7	13…Nb6	13…Nc5
<1800	17	53%	41%	—	—
1800-2200	182	76%	20%	—	2%
2200-2600	134	89%	7%	1%	2%

Évolution par décennie (% des parties)

Décennie	N parties	13…Rb8	13…Bb7	13…Nb6	13…Nc5
1950s	3	—	100%	—	—
1960s	99	57%	35%	4%	1%
1970s	165	88%	8%	2%	1%
1980s	103	88%	9%	1%	2%
1990s	130	86%	11%	—	2%
2000s	117	78%	20%	1%	1%
2010s	122	75%	20%	1%	1%
2020s	10	80%	20%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
13…Rb8	75%	80%	▲ +4.6%
13…Bb7	20%	20%	-0.5%
13…Nb6	1%	0%	▼ -0.8%
13…Nc5	1%	0%	▼ -0.8%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 1 partie

Parties historiques

13…Rb8 — 79.4% (595 parties)

1960 — Keres, Paul Petrovich vs Belkadi, Ridha — 1-0 — Match-tournament team
1962 — Bobkov, Vadim vs Kapengut, Albert — 1-0 — Soviet Union
1964 — Hartston, William R vs May, Alan K — 1-0 — Bognor Regis
1964 — Babichuk vs Kirilov, Valentins — 0-1 — Riga LAT
1964 — Hindle, Owen M vs Gligorić, Svetozar — 1-0 — Hastings ENG

13…Bb7 — 16.6% (124 parties)

1955 — Shagalovich, Abo vs Chukaev, Egor — 1-0 — URS-ch sf Vilnius LTU
1959 — Sherwin, James T vs Fischer, Raphael — 1/2-1/2 — New York, NY USA
1959 — Gligoric, Svetozar vs Fischer, Robert J — 1-0 — Bled/Zagreb/Belgrade
1960 — O'Kelly de Galway, Alberic vs Fischer, Robert J — 1/2-1/2 — Leipzig GER
1960 — Spassky, Boris Vasily vs Eliskases, Erich — 1-0 — Mar del Plata ARG

13…Nb6 — 1.5% (11 parties)

1963 — Unzicker, Wolfgang vs Donner, Jan-Hein — 1-0 — Scheveningen NED
1967 — Bergdahl, Assar vs Runstrom, Harry — 1/2-1/2 — corr SWE/K
1968 — Engel, Klaus Eberhard Dr vs Schmaus, Alexandru — 0-1 — FRG-ch11 corr6871
1969 — Mujica, Del Valle Jorge Arturo vs Gimenez, G Gustavo — 1-0 — ?
1973 — Basurco Ricardo vs Vazquez Dante P — 1-0 — PER

13…Nc5 — 1.2% (9 parties)

1964 — Schmidt, Wlodzimierz vs Savon, Vladimir A — 1/2-1/2 — Krakow POL
1970 — Adorjan, Alex vs Hamann, Slawomir — 1-0 — Amsterdam NED
1972 — Timm, Jasper vs Street, Frank — 0-1 — US Open
1989 — Dimitrov, Vladimir vs Ljangov, Petar — 1-0 — Primorsko
1989 — Feher, Gyula vs Hradeczky, Tamas — 1/2-1/2 — HUN ch op

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