C84d — Spanish: Closed, 6.Nc3 b5 7.Bb3 d6 8.Nd5

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Nc3 b5 7.Bb3 d6 8.Nd5 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Jeu au centre (rupture c2-c4).

Atouts. Les Blancs s'appuient sur un contrôle dominant de d5.

Côté adverse. Le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1).

Plans. Nxe7 (Capture en e7 — 62 % des parties) ; d4 (Occuper le centre — 14 % des parties) ; Nxf6+ (Capture en f6 — 6 % des parties) ; c3 (Renforcer le centre — 5 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Manœuvres et amélioration des pièces.

Atouts. Les Noirs s'appuient sur un contrôle dominant de d4 et g4.

Côté adverse. Une pièce en prise (le pion en e4).

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. ...Na5 (65 % des parties) ; ...O-O (Mettre le roi en sécurité, connecter les tours — 12 % des parties) ; ...Bb7 (Développer c8 — 10 % des parties) ; ...Nxe4 (Cavalier centralisé en e4 — 9 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● a6→b5, d6→e5, c7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (2v1)	● d4 (2v1), ● g4 (2v0)
Cases faibles	—	—
Centre	● d5 (2v1)	● d4 (2v1), ● e4 (1v0), ● e5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bb3	● Bb3 Ok (mob. 2)
Be7		● Be7 Ok (mob. 1)
Bc8		● Bc8 Non développé (mob. 6)
Paire de fous	● Oui	● Oui
Non développées	2 (● c1, ● a1)	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	fermé
Ruptures	● c2-c4, ● d2-d4	—

Partie
1900 London – Round 8 – Jones, Edward O – 0-1 – Teichmann, Richard – G23 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d3 Bg4
1939 Margate – Round 1 – Bellod Thomas, Gonzalo – 1-0 – Flohr, Salo – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bg4 9. Nxe7 Qxe7 10. c3 O-O
1941 Munchen – Round 1 – Alekhine, Alexander – 1-0 – Bogoljubow, Efim – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. c3 Na5 10. Nxe7+ Qxe7
1942 Munich – Round 1 – Alekhine, Alexander – 1-0 – Barcza, Gedeon – G15 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bg4 9. c3 O-O 10. h3 Be6
1943 Salzburg – Round 1 – Alekhine, Alexander – 1-0 – Schmidt, Pascal – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Be6 9. Re1 Na5 10. Nxe7 Qxe7
1943 UJCS-17.Kongress – Round 5 – Foltys, Jan – 0-1 – Dobias, Josef – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Nc3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Nxb3
1945 Novi Sad – Round 1 – Kostic, Boris – 1/2-1/2 – Vukovic, Sava – G32 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1946 Buenos Aires ch-ARG – Round 1 – Bolbochan, Jacobo – 1-0 – Rebizzo, Cayetano – G42 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. Nxe7+ Qxe7 10. c3 Na5
1947 Mar del Plata – Round 16 – Bolbochan, J. – 1/2-1/2 – Najdorf, Miguel – G141 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1947 Nt Lueneburg GER – Round 3 – Ahues, Carl – 1/2-1/2 – Kuppe, Wilhelm – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 b5 6. Bb3 Be7 7. O-O d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d3 Nxb3
1948 GBR-NED match – Round 1.5 – Cortlever, Nico – 1/2-1/2 – Alexander, Conol Hugh – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Be7 6. O-O b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d3 O-O
1949 Oldenburg – Round 13 – Sarapuu, Ortwin – 1/2-1/2 – Unzicker, Wolfgang – G45 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Be7 6. O-O b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d3 O-O
1949 Oldenburg – Round 4 – Sarapuu, Ortwin – 1-0 – O'Kelly de Galway, Alberic – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Be7 6. O-O b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. Qe2 Bb7
1950 Southsea – Round 5 – Penrose, Justin – 1-0 – Newman Caceres, Reynaldo Adolfo – G27 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. Nxe7+ Qxe7 10. c3 Bg4
1951 BCF Ch 38th – Round 5.5 – Penrose, Jonathan – 0-1 – Broadbent, Reginald – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. Nxe7+ Qxe7 10. c3 Na5
1952 Helsinki olm – Round 1 – Enevoldsen, Jens – 1-0 – Doerner, Charles – G245 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d3 h6
1952 Helsinki olm – Round 1 – Penrose, Justin – 1/2-1/2 – Bolbochan, J. – G163 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 h6
1953 Glasgow International – Round 3 – Penrose, Jonathan – 1-0 – Macleod, Norman Alasdair – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Nxb3
1953 Wch-jr final – Round 7 – Penrose, Jonathan – 1/2-1/2 – Darga, Klaus – G16 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Nc3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1954 Belgrade – Round 15 – Trifunovic, Petar – 1/2-1/2 – Gligorić, Svetozar – G123 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d3 O-O
1956 Candidats Tournament – Round 11 – Keres, Paul Petrovich – 1/2-1/2 – Szabo, Laszlo – G52 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Bb7
1956 JUG-URS – Round 1 – Karaklajic, Nikola – 0-1 – Keres, P. – G20 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Nxe4 9. d4 Bb7 10. Re1 Na5
1956 Montevideo – Round 1 – De Souza Mendes, Joao – 0-1 – Ader Hausman, Walter – G43 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Bb7
1956 New York Rosenwald – Round ? – Bisguier, Arthur B – 0-1 – Reshevsky, Samuel – G41 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1957 Hamburg Ch – Round 2 – Martius, Ottokar – 1/2-1/2 – Rellstab, Ludwig Sr – G2 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 b5 6. Bb3 Be7 7. O-O d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Nxb3
1957 Leningrad Ch – Round ? – Rubel, Igor G – 0-1 – Furman, Semyon – G160 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxe7 Nxe7 10. d3 Ng6
1957 Match GDR-CSR – Round 1 – Alster, Ladislav – 1/2-1/2 – Dittmann, Sieghart – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Nxb3
1957 Moskou ch-URS – Round 12 – Mikenas, Vladas – 1-0 – Nezhmetdinov, Rashid – G123 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. Re1 O-O
1958 Mar del Plata – Round 3 – Sanguinetti, Ricardo – 1/2-1/2 – Panno, Oscar – G26 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxf6+ Bxf6 10. Bd5 O-O
1958 Munich olm fin-A – Round 10 – Darga, Klaus – 1/2-1/2 – Dittmann, Sieghart – G98 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxf6+ Bxf6 10. Bd5 Na5
1958 Sarajevo Sarajevo BIH – Round 1 – Smailbegovic, Hasan – 1/2-1/2 – Eliskases, Erich – G33 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1958 URS-JUG – Round 1 – Keres, Paul – 1-0 – Gligorić, Svetozar – G2 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxf6+ Bxf6 10. Bd5 Qc8
1958 URS-JUG – Round 4 – Keres, Paul Petrovich – 1/2-1/2 – Gligoric, Svetozar – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxf6+ Bxf6 10. Bd5 Qc8
1959 CSR Ch – Round 13 – Fichtl, Jiri – 1/2-1/2 – Kozma, Julius – G105 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Be7 6. O-O b5 7. Bb3 d6 8. Nd5 Bb7 9. c3 Na5 10. Nxf6+ Bxf6
1959 Marianske Lazne – Round 12 – Fichtl, Jiri – 1/2-1/2 – Radovici, Corvin – G86 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. c3 Na5 10. Nxf6+ Bxf6
1959 Marianske Lazne – Round 5 – Blatny, Frantisek – 0-1 – Radovici, Corvin – G37 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. c3 Nxd5 10. Bxd5 Bb7
1959 Santiago – Round 3 – Ader Hausman, Walter – 1/2-1/2 – Abreu Sanchez, Leonel Jesus – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. d4 Nxb3 10. axb3 Nxd5
1959 Santiago – Round 5 – Ascencio Flores, Rodrigo – 1-0 – Letelier Martner, Rene – G31 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1960 Leipzig olm fin-A – Round 5 – Hort, Vlastimil – 1/2-1/2 – Haygarth, Michael J – G91 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Nxb3
1960 Ljubljana – Round 14 – Kozomara, Vlado – 0-1 – Trifunovic, Petar – G98 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Nxb3
1961 Debrecen – Round 5 – Ciocaltea, Victor – 1-0 – Tarnowski, Alfred – G37 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 b5 6. Bb3 Be7 7. O-O d6 8. Nd5 Bg4 9. c3 O-O 10. h3 Bh5
1961 ROM Ch – Round 14 – Ciocaltea, Victor – 1-0 – Vaisman, Volodia – G92 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. c3 Bb7 10. d4 h6
1962 Sofia – Round 10 – Ciocaltea, Victor – 1-0 – Kluger, Gyula – G60 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxf6+ Bxf6 10. Bd5 Na5
1962 Torremolinos zt – Round 1 – Szabo, Ladislav – 1/2-1/2 – Gereben, Erno – G38 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. d4 Nxb3 10. axb3 Nxd5
1962 Varna olm – Round 11 – Ciocaltea, Victor – 1/2-1/2 – Filip, Marius Liviu – G461 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1962 Varna olm – Round 3 – Ciocaltea, Victor – 1-0 – Euwe, Max – G112 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Be7 6. O-O b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1963 Amsterdam – Round 8 – Zuidema, Coen – 1/2-1/2 – Hartoch, Robert G – G35 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. Nxe7+ Qxe7 10. c3 Be6
1963 FRG Ch 07th – Round 5 – Mohrlok, Dieter – 0-1 – Wolk, Sigmund – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bg4 9. c3 Qd7 10. Nxe7 Nxe7
1963 Halle zt – Round 1 – Ofstad, Per – 1/2-1/2 – Kinnmark, Ove – G102 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxf6+ Bxf6 10. Bd5 Qc8
1964 Belgrade – Round 17 – Spassky, Boris Vasily – 1/2-1/2 – Janosevic, Dragoljub – G125 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d3 O-O
1964 Buenos Aires Ch – Round ? – Garcia Rodriguez, Raimundo – 1-0 – Scanavino, Eduardo – G63 1. Nf3 Nc6 2. e4 e5 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Nxb3
1964 Hoogovens – Round 1 – Nei, Iivo – 1-0 – Portisch, Lajos – G38 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxe7 Qxe7 10. Re1 Na5
1964 Ilford – Round 2 – Littlewood, Norman – 0-1 – Penrose, Justin – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Qe2 Nxb3 10. axb3 c5
1964 Parnu – Round ? – Mikenas, Vladas – 1/2-1/2 – Koblencs, Alexander – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 h6
1964 Tel Aviv olm prel – Round 1 – Kahyai, Khosro – 1/2-1/2 – Durão, Joaquim Manuel – G26 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1964 WchT U26 11. fin-A – Round 10.2 – Chipev Teodor – 0-1 – Moe, Mogens – G175 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. d4 Bb7 10. dxe5 dxe5
1965 Corr EU M – Round ? – Hea, R – 1/2-1/2 – Schrancz, Istvan – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 O-O
1965 Novi Sad – Round 17 – Buljovcic, Ivan – 1/2-1/2 – Gligorić, Svetozar – G141 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxe7 Qxe7 10. Re1 Na5
1965 POL Ch 23th sf – Round 2 – Pietrusiak, Bogdan – 1/2-1/2 – Kwasniewski, Zdzislaw – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. Nxf6+ Bxf6 10. Bd5 Bd7
1965 Yerevan – Round 6 – Nei, Iivo – 1/2-1/2 – Filip, Miroslav – G33 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxf6+ Bxf6 10. Bd5 O-O
1966 Aarhus – Round 1 – Koelbaek, Jens – 1/2-1/2 – Brinck-Claussen, Bjorn – G17 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 b5 6. Bb3 Be7 7. O-O d6 8. Nd5 Bb7 9. Nxf6+ Bxf6 10. Bd5 Rb8
1966 Mar del Plata – Round 1 – Sanguineti, Raúl Carlos – 1/2-1/2 – Reshevsky, Samuel – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. Nxf6+ Bxf6 10. Bd5 Bb7
1966 OWL Ch – Round 3 – Groenegress, Wilfried – 1/2-1/2 – Bilo, Heinz – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Re1 O-O 10. Nxe7+ Qxe7
1967 Winnipeg – Round 3 – Spassky, Boris V. – 1/2-1/2 – Keres, Paul – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. d3 Nxd5 10. Bxd5 O-O
1967 Winnipeg – Round 3 – Spassky, Boris Vasily – 1/2-1/2 – Keres, Paul Petrovich – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. d3 Nxd5 10. Bxd5 O-O
1968 Bamberg – Round 12 – Keres, Paul Petrovich – 1/2-1/2 – Unzicker, Wolfgang – G81 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. Nxe7 Qxe7 10. d4 Nxb3
1969 Luhacovice – Round 4 – Keres, Paul – 1-0 – Lengyel, Agnes – G42 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bb7 9. Nxe7 Qxe7 10. d3 Nd7
1969 WchT U26 fin-B 16th – Round 7.1 – Westerinen, Heikki M.J. – 1/2-1/2 – Tompa, Janos – G40 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. Nxe7+ Nxe7 10. d3 Be6
1969 YUG Ch 24th – Round 19 – Ivanovic, Bozidar – 1/2-1/2 – Stupica, Janez – G73 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 Na5 9. d4 Nxb3 10. axb3 Bb7
Interpolis 1981 – Round 1 – Spassky, Boris V. – 1/2-1/2 – Beliavsky, Alexander G – G37 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. Nd5 O-O 9. d3 Na5 10. Nxe7+ Qxe7

C84d — Spanish: Closed (1900)

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Nc3 b5 7.Bb3 d6 8.Nd5

Les coups candidats

8…Na5 — 65.1% (246 parties)

Ambassadeurs : Bernal Varela, Nelson (7x), Janisch, Manfred (6x), Penrose, Jonathan (5x), Ciocaltea, Victor (4x), Allen, Conroy (4x), Kushagra Mohan (4x), Richter, Wolfgang (4x), Keres, Paul Petrovich (3x)

8…O-O — 11.9% (45 parties)

Ambassadeurs : Penrose, Jonathan (2x), Tompa, Janos (2x), Radovici, Corvin (2x), Ciocaltea, Victor (2x), Keres, Paul Petrovich (2x), Kara, Neman (1x), Westerinen, Heikki M.J. (1x), Benko, Francisco (1x)

8…Bb7 — 10.3% (39 parties)

Ambassadeurs : Keres, Paul Petrovich (5x), Keres, Paul (3x), Nei, Iivo (2x), Spassky, Boris Vasily (2x), Gligoric, Sofija (2x), Balogh, Janos (2x), Fichtl, Jiri (1x), Kozma, Julius (1x)

8…Nxe4 — 8.7% (33 parties)

Ambassadeurs : Jablonski, Jerzy (2x), Warman, Simon M (2x), Recalde, Eleuterio (1x), Letzelter, Jean-Claude (1x), Landbo (1x), Tucek, Jan (1x), Kamensky, Vitaly (1x), Novikov, Yuri A. (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…Na5	8…O-O	8…Bb7	8…Nxe4
<1800	26	65%	12%	4%	19%
1800-2200	113	75%	12%	4%	5%
2200-2600	96	72%	11%	6%	6%
2600+	4	50%	50%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	8…Na5	8…O-O	8…Bb7	8…Nxe4
1950s	44	61%	16%	18%	5%
1960s	54	44%	13%	26%	9%
1970s	20	55%	15%	20%	—
1980s	18	67%	17%	6%	11%
1990s	25	64%	8%	8%	12%
2000s	52	56%	15%	12%	15%
2010s	147	78%	9%	3%	7%
2020s	18	72%	11%	—	11%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…Na5	78%	72%	▼ -5.3%
8…O-O	9%	11%	▲ +2.3%
8…Bb7	3%	0%	▼ -2.7%
8…Nxe4	7%	11%	▲ +3.6%

Parties historiques

8…Na5 — 65.1% (246 parties)

1951 — Harrell, Bruce B vs Baron, Scudierr — 0-1 — Fort Worth, TX USA
1952 — Penrose, Jonathan vs Bolbochan, Julio — 1/2-1/2 — Helsinki olm
1952 — Sarapu, Ortvin vs Purdy, Cecil J S — 1-0 — ?
1952 — Enevoldsen, Jens vs Doerner, Charles — 1-0 — Helsinki olm
1953 — Penrose, Jonathan vs McCleod, N.A — 1-0 — Glasgow SCO

8…O-O — 11.9% (45 parties)

1950 — Penrose, Jonathan vs Kara, Neman — 1-0 — Southsea
1951 — Harrell, Bruce B vs Hartleb, Glenn E — 1/2-1/2 — Fort Worth, TX USA
1951 — Penrose, Jonathan vs Broadbent, Reginald — 0-1 — Swansea WLS
1957 — Keres, Paul Petrovich vs Anay Barche — 0-1 — EST-HUN Tallinn EST
1958 — Benko, Francisco vs Bartis, Gustavo — 1/2-1/2 — Buenos Aires METRO

8…Bb7 — 10.3% (39 parties)

1957 — G.k.p., Rubel vs Furman, Semyon — 0-1 — Leningrad RUS
1958 — Geller, Efim P. vs Keres, Paul Petrovich — 1/2-1/2 — Vilnius LTU
1958 — Darga, Klaus vs Dittmann, Sieghart — 1/2-1/2 — Munich GER
1958 — Keres, Paul Petrovich vs Gligorić, Svetozar — 1/2-1/2 — Zagreb CRO
1958 — Keres, Paul vs Gligoric, Sofija — 1-0 — Zagreb CRO

8…Nxe4 — 8.7% (33 parties)

1956 — Aadhitha Karikalan vs Keres, Paul — 0-1 — Belgrade SRB
1957 — Kamensky, Vitaly vs Novikov, Yuri A. — 1-0 — ?
1964 — Jablonski, Jerzy vs Tucek, Jan — 1-0 — EU-ch GT5 corr
1964 — Asher Kahi vs Reissmann, Paul — 1-0 — Tel Aviv ISR
1965 — Jablonski, Jerzy vs Landbo — 0-1 — corr Baltic

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