C87m — Spanish: Closed, Averbakh, 7.c3 O-O 8.d4 Bd7 9.Nbd2 Re8

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6 7.c3 O-O 8.d4 Bd7 9.Nbd2 Re8 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur un fou actif en a4 et la paire de fous.

Côté adverse. Le fou enfermé en e7.

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

Plans. Bg5 (Clouer Nf6) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur la case forte g4, un fou actif en d7 et la paire de fous.

Côté adverse. Le fou enfermé en c1.

Plans. ...Bg4 (Clouer Nf3) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→c3, c3→d4	● d6→e5, b7→a6, c7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● g4 (2v0)
Cases faibles	—	—
Centre	● e4 (2v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Ba4	● Ba4 Actif (mob. 4)
Bd7		● Bd7 Actif (mob. 5)
Be7		● Be7 Enfermé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	1 (a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c3-c4, ● d4-d5	● …d6-d5

Partie
1905 It (Men) Barmen GER – Round 10 – Olland, Adolf George – 0-1 – Kostic, Boris – G109 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 Bd7 6. c3 Nf6 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1907 Ostende II – Round 25 – D Marco, Gianni – 1-0 – Shoosmith, Hector W – G299 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. d4 Bd7 7. c3 Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 h6
1909 St Petersburg – Round 1 – Perlis, Julius – 1-0 – Teichmann, Richard – G63 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 d6 7. c3 O-O 8. d4 Bd7 9. Nbd2 Re8 10. Nf1 h6
1928 Dortmund – Round 1 – Reti, Richard – 1/2-1/2 – Bogoljubow, Efim – G2 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 d6 7. d4 Bd7 8. c3 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1928 West of England Premier 4th – Round 4 – Thomas, George Alan – 1-0 – Yates, Frederic D – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1929 Budapest HUN – Round 1 – Thomas, George Alan – 1-0 – Przepiorka, Dawid – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c3 Nf6 7. d4 Be7 8. Re1 O-O 9. Nbd2 Re8 10. dxe5 Nxe5
1930 Frankfurt – Round 8 – Kashdan, Isaac – 1/2-1/2 – Ahues, Carl – G45 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 Bd7 6. c3 Nf6 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. Nf1 exd4
1930 Kent County Premier – Round 4 – Yates, Frederic D – 1-0 – Spencer, Edwin A – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c3 Nf6 7. Re1 Be7 8. d4 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1931 Hastings 3132 – Round ? – Yates, Frederic D – 1-0 – Michell, Reginald – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Re1 Be7 7. c3 O-O 8. d4 Bd7 9. Nbd2 Re8 10. Nf1 Bf8
1932 Bern – Round 1 – Johner, Paul – 1/2-1/2 – Henneberger, Walter – G20 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Re1 Bd7 7. d4 Be7 8. c3 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1932 Budapest – Round 1 – Steiner, Lajos – 1-0 – Merenyi, Lajos – G43 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. d4 Bd7 7. c3 Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1938 Argentina – Round 14 – Carballo Madrigal, Fabian – 0-1 – Bolbochan, J. – G35 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Re1 Be7 7. c3 O-O 8. d4 Bd7 9. Nbd2 Re8 10. Nf1 Bf8
1939 Margate – Round 20 – Sergeant, Edward – 0-1 – Keres, Paul Petrovich – G43 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Re1 Bd7 7. c3 Be7 8. d4 O-O 9. Nbd2 Re8 10. h3 Bf8
1941 Mar del Plata – Round 10 – Engels, Ludwig – 1-0 – Bolbochan, J. – G84 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. O-O Nf6 7. Re1 Be7 8. d4 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1946 NED Ch prelim I – Round 6 – Marwitz, Jan Hendrik – 1/2-1/2 – Fontein, George – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 Bd7 6. c3 Nf6 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1947 Kassel – Round 2 – Bohatirchuk, Fedor – 1-0 – Endzelins, Lucius – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 d6 7. c3 Bd7 8. d4 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1951 Augsburg – Round 1 – Bogoljubow, Efim – 1-0 – Kieninger, Georg – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Nf6 6. d4 Bd7 7. c3 Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 h6
1951 FRG Ch Duesseldorf GER – Round 19 – Schmid, Lothar – 1-0 – Elstner, Rudolf – G15 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. Nf1 Bf8
1951 Mar del Plata zt – Round 12 – Mangini, Jose Henrique de Mello – 0-1 – Bolbochan, J. – G120 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. O-O Nf6 7. d4 Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 h6
1951 Zonal – Round 10 – Kramer, Haije – 0-1 – Bogoljubow, Efim – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Re1 Bd7 7. c3 Be7 8. d4 O-O 9. Nbd2 Re8 10. Bb3 Bf8
1954 Bucharest – Round 10 – Nezhmetdinov, Rashid – 1-0 – Szabo, Stefan – G89 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. Bb3 h6
1956 Alekhine Memorial – Round 1 – Unzicker, Wolfgang – 1/2-1/2 – Smyslov, Vladimir – G70 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 h6
1956 JUG-URS – Round 1 – Djurasevic, Bozidar – 1/2-1/2 – Smyslov, Vladimir – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. h3 Bf8
1956 Moscow olm fin-B – Round 7 – Dueckstein, Andreas – 1/2-1/2 – Sanchez Alpizar, Luis Alberto – G77 1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 d6 5. Bb5 Bd7 6. O-O Be7 7. Re1 a6 8. Ba4 O-O 9. Nbd2 Re8 10. Bxc6 Bxc6
1957 Dublin zt – Round 15 – Schmid, Leo – 1-0 – Fairhurst, William – G121 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 d6 7. c3 Bd7 8. d4 O-O 9. Nbd2 Re8 10. Bxc6 Bxc6
1957 EU Team Ch – Round 2 – Unzicker, Wolfgang – 1/2-1/2 – Smyslov, Vladimir – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. Bxc6 Bxc6
1957 Leningrad Ch – Round 2 – Suetin, Alexey S – 1-0 – Bykov, Vladimir – G16 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Nbd2 O-O 9. Re1 Re8 10. a3 Bf8
1957 Minsk zt – Round 10 – Shagalovich, Abo – 1-0 – Rozhdestvensky, Vladimir – G68 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. Nf1 exd4
1957 Sombor – Round 19 – Bogdanovic, Rajko – 1-0 – Djurasevic, Bozidar – G188 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. O-O Nf6 7. d4 Be7 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 h6
1958 Argentina – Round 16 – Pilnik, Herman – 1/2-1/2 – Garcia Vera, Romeo – G124 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. a3 Bf8
1959 Buenos Aires VC – Round 1 – Foguelman – 1/2-1/2 – Bolbochan, J. – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. Re1 Nf6 7. c3 Be7 8. d4 O-O 9. Nbd2 Re8 10. Nf1 h6
1959 Candidats Tournament – Round 18 – Fischer, Robert J – 1/2-1/2 – Gligoric, Svetozar – G68 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. O-O Be7 7. d4 Bd7 8. Nbd2 O-O 9. Re1 Re8 10. a3 Bf8
1959 URS-JUG – Round 4 – Smyslov, Vladimir – 1/2-1/2 – Gligoric, Sofija – G23 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. a3 Bf8
1959 Zuerich – Round 1 – Tal, Mikhail – 0-1 – Gligorić, Svetozar – G56 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. O-O Be7 8. Nbd2 O-O 9. Re1 Re8 10. a3 Bf8
1960 Varna – Round 12 – Krogius, Nikolai V – 1/2-1/2 – Minev, Nikolay N – G20 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. h3 Bf8
1961 Hastings6162 – Round 1 – Littlewood, John E – 1-0 – Gligorić, Svetozar – G3 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. Bb3 h6
1961 Oberhausen etc – Round 6 – Jansa, Vlastimil – 1/2-1/2 – Bilek, Istvan – G161 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. O-O Be7 7. d4 Bd7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1961 Sarajevo – Round 3 – Bogdanovic, Rajko – 1/2-1/2 – Gligorić, Svetozar – G21 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. dxe5 Nxe5
1961 Zagreb – Round 13 – Matulovic, Milan – 1-0 – Sokolov, Vladimir – G108 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Re1 Be7 7. c3 O-O 8. d4 Bd7 9. Nbd2 Re8 10. Nf1 Bf8
1962 Lasker Memorial Berlin-Ost – Round 3 – Beni, Alfred – 1/2-1/2 – Minev, Nikolay N – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. Bxc6 Bxc6
1963 Alekhine Memorial – Round 2 – Matanovic, Aleksandar – 1-0 – Gligorić, Svetozar – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Be7 7. O-O Bd7 8. Nbd2 O-O 9. Re1 Re8 10. a3 Bf8
1963 Halle zt – Round 1 – Robatsch, Karl – 1/2-1/2 – Minev, Nikolay N – G97 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. Bb3 h6
1963 Hastings6364 – Round 2 – Tal, Mikhail – 1/2-1/2 – Gligorić, Svetozar – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. Nf1 h6
1964 Tel Aviv olm fin-A – Round 13 – Keres, Paul Petrovich – 1/2-1/2 – Hort, Vlastimil – G289 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 d6 7. c3 Bd7 8. d4 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1965 Hoogovens – Round 7 – Matanovic, Anto – 1/2-1/2 – Acuna Medina, Angel G. – G59 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. a3 Bf8
1966 Palma de Mallorca – Round 1 – Shamkovich, Leonid – 1/2-1/2 – Portisch, Lajos – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 Bf8
1966 Palma de Mallorca – Round 14 – Shamkovich, Leonid – 0-1 – Medina-Garcia, Antonio – G85 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. Nf1 h6
1966 Palma de Mallorca – Round 5 – Ivkov, Borislav – 1/2-1/2 – Portisch, Lajos – G32 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c3 Nf6 7. d4 Be7 8. Re1 O-O 9. Nbd2 Re8 10. a3 a5
1966 Tel-Aviv it – Round 8 – Domnitz, Zadok – 1-0 – Bolbochan, Jacobo – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. d5 Nb8
1967 Maribor – Round 13 – Unzicker, Wolfgang – 1/2-1/2 – Ivkov, Borislav – G73 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c3 Nf6 7. d4 Be7 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 Bf8
1967 Moscow – Round 1 – Gipslis, Aivars – 1/2-1/2 – Filip, Marius Liviu – G107 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. d4 Nf6 7. c3 Be7 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 h6
1967 Moscow RUS – Round 10 – Gipslis, Aivars – 1/2-1/2 – Portisch, Lajos – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c3 Nf6 7. d4 Be7 8. Nbd2 8. ... O-O 9. Re1 Re8 10. a3 Bf8
1967 Sousse Interzonal – Round 18 – Kavalek, Lubomir – 0-1 – Portisch, Lajos – G166 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. d4 Nf6 7. c3 Be7 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 Bf8
1967 Sousse Interzonal – Round 5 – Byrne, Ray – 0-1 – Kavalek, Lubomir – G47 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 d6 7. c3 O-O 8. d4 Bd7 9. Nbd2 Re8 10. a3 Bf8
1967 Sousse Interzonal – Round 7 – Hort, Vlastimil – 1/2-1/2 – Kavalek, Lubomir – G66 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Nf6 6. Re1 Be7 7. d4 Bd7 8. c3 O-O 9. Nbd2 Re8 10. Nf1 h6
1968 Bamberg – Round 6 – Schmid, Leo – 1/2-1/2 – Unzicker, Wolfgang – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. c3 Bd7 7. d4 Be7 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 h6
1968 Buesum – Round 15 – Parma, Bruno – 1-0 – Saemisch, Friedrich – G23 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. d4 Nf6 7. c3 Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 h6
1968 IBM-B – Round 4 – Scholl, Eckhard – 0-1 – Acuna Medina, Angel G. – G17 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. d4 Nf6 7. c3 Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 h6
1968 It Buesum GER – Round 1 – Parma, Bruno – 1/2-1/2 – Medina-Garcia, Antonio – G4 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Be7 6. d4 Nf6 7. c3 Bd7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1968 It Buesum GER – Round 14 – Tringov, Georgi P – 1-0 – Medina-Garcia, Antonio – G64 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. d4 Nf6 7. c3 Be7 8. Re1 O-O 9. Nbd2 Re8 10. a3 Bf8
1968 Lugano olm - Round 1 - Ujtumen, Tudev - 0-1 - Acuna Medina, Angel G. - G283 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. O-O Be7 7. d4 O-O 8. Nbd2 Bd7 9. Re1 Re8 10. Nf1 h6
1968 Meldorf U26 – Round 4 – Held, Paul – 1/2-1/2 – Westerinen, Heikki M.J. – G16 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 h6
1968 Netanya-A – Round 10 – Domnitz, Zadok – 1/2-1/2 – Yanofsky, Daniel Abraham – G61 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. O-O Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1968 Netanya-B – Round 6 – Bar Nir, A. – 0-1 – Westerinen, Heikki M.J. – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. O-O Nf6 7. Re1 Be7 8. d4 O-O 9. Nbd2 Re8 10. dxe5 Nxe5
1968 Palma de Mallorca – Round 8 – Acuna Medina, Angel G. – 1-0 – Westerinen, Heikki M.J. – G76 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. d4 Nf6 7. c3 Be7 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 h6
1968 Sarajevo – Round 15 – Kavalek, Lubomir – 1/2-1/2 – Ivkov, Borislav – G105 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. O-O Nf6 7. Re1 Be7 8. d4 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1968 Skopje/Ohrid – Round 16 – Parma, Bruno – 1-0 – Ilievski, Borce – G134 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Nf6 6. c3 Be7 7. d4 Bd7 8. Re1 O-O 9. Nbd2 Re8 10. a3 b5
1968 Solingen GER – Round 13 – Tatai, Stefano – 1/2-1/2 – Medina-Garcia, Antonio – G23 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. d4 Nf6 7. c3 Be7 8. Nbd2 O-O 9. Re1 Re8 10. Nf1 Bf8
1969 Budapest ch-HUN – Round 1 – Dely, Peter – 1-0 – Filep, Tibor – G80 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. Re1 Nf6 7. c3 Be7 8. d4 O-O 9. Nbd2 Re8 10. Nf1 Bf8
1969 WchT U26 fin-A 16th – Round 4.4 – Kupreichik, Viktor D – 1-0 – Ryc, Ivo – G29 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c3 Nf6 7. Re1 Be7 8. d4 O-O 9. Nbd2 Re8 10. Nf1 h6
1970 Palma de Mallorca Interzonal – Round 19 – Matulovic, Milan – 1/2-1/2 – Portisch, Lajos – G207 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. d4 Nf6 7. c3 Be7 8. Re1 O-O 9. Nbd2 Re8 10. Nf1 h6
1971 Hoogovens – Round 12 – Huebner, Robert – 1-0 – Kuijpers, F. – G164 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nf6 7. Nbd2 Be7 8. O-O O-O 9. Re1 Re8 10. Nf1 h6

C87m — Closed Averbakh

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6 7.c3 O-O 8.d4 Bd7 9.Nbd2 Re8

Eval: [+0.54]

Les coups candidats

10.Nf1 — 66.0% (212 parties)

Ambassadeurs : Westerinen, Heikki M.J. (10x), Weill, Roland (10x), Acuna Medina, Angel G. (7x), Ivkov, Borislav (5x), Parma, Bruno (5x), Bolbochan, J. (4x), Kavalek, Lubomir (4x), Medina-Garcia, Antonio (4x)

10.h3 — 7.8% (25 parties)

Ambassadeurs : Smyslov, Vladimir (2x), Sergeant, Edward (1x), Keres, Paul Petrovich (1x), Tenner, Oscar (1x), Von Bardeleben, Curt (1x), Eliskases (1x), Alibau Farre, Ramon (1x), Reicher, Emanoil-George (1x)

10.a3 — 7.8% (25 parties)

Ambassadeurs : Ivkov, Borislav (4x), Suetin, Alexey S (2x), Medina-Garcia, Antonio (2x), Parma, Bruno (2x), Gligorić, Svetozar (2x), Westerinen, Heikki M.J. (2x), Pilnik, Herman (1x), Garcia Vera, Romeo (1x)

10.Bxc6 — 7.5% (24 parties)

Ambassadeurs : Schmid, Lothar (2x), Unzicker, Wolfgang (2x), Fairhurst, William (2x), Tseitlin, Mark D (2x), Znosko-Borovsky, Eugene (1x), Capablanca, Jose (1x), Lasker, Emanuel (1x), ? (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10.Nf1	10.h3	10.a3	10.Bxc6
<1800	3	33%	33%	—	33%
1800-2200	43	77%	7%	—	7%
2200-2600	99	75%	8%	5%	4%

Évolution par décennie (% des parties)

Décennie	N parties	10.Nf1	10.h3	10.a3	10.Bxc6
1890s	2	100%	—	—	—
1900s	6	67%	—	—	—
1910s	1	—	100%	—	—
1920s	5	60%	—	—	—
1930s	10	60%	10%	—	30%
1940s	4	75%	—	—	—
1950s	22	36%	5%	23%	23%
1960s	57	58%	9%	14%	4%
1970s	64	66%	6%	12%	8%
1980s	30	77%	7%	3%	7%
1990s	29	69%	10%	3%	10%
2000s	48	71%	6%	4%	4%
2010s	37	78%	11%	—	5%
2020s	6	83%	17%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10.Nf1	78%	83%	▲ +5.0%
10.h3	11%	17%	▲ +5.9%
10.a3	0%	0%	+0.0%
10.Bxc6	5%	0%	▼ -5.4%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 5 parties
Tal, Mikhail — 3 parties
Lasker, Emanuel — 2 parties
Steinitz, Wilhelm — 2 parties
Karpov, Anatoly — 1 partie
Euwe, Max — 1 partie

Parties historiques

10.Nf1 — 66.0% (212 parties)

1895 — Lasker, Emanuel vs Steinitz, Wilhelm — 1-0 — St Petersburg RUS
1895 — Walbrodt, Carl vs Steinitz, Wilhelm — 0-1 — Hastings ENG
1902 — Janowsky, D. vs Schlechter, C. — 1-0 — Carlsbad CZE
1905 — Olland, Adolf George vs Kostic, Boris — 0-1 — Barmen GER
1907 — D Marco, Gianni vs Shoosmith, Hector W — 1-0 — Ostende II

10.h3 — 7.8% (25 parties)

1910 — Tenner, Oscar vs Von Bardeleben, Curt — 1-0 — Berlin GER
1939 — Sergeant, Edward vs Keres, Paul Petrovich — 0-1 — Margate ENG
1956 — Djurasevic, Bozidar vs Smyslov, Vladimir — 1/2-1/2 — Belgrade SRB
1960 — Reicher, Emanoil-George vs Neikirkh, Oleg — 1/2-1/2 — Sofia BUL
1960 — Krogius, Nikolai V vs Minev, Nikolay N — 1/2-1/2 — Varna BUL

10.a3 — 7.8% (25 parties)

1957 — Suetin, Alexey S vs Bykov, Vladimir — 1-0 — Leningrad RUS
1958 — Pilnik, Herman vs Garcia Vera, Romeo — 1/2-1/2 — Buenos Aires ARG
1959 — Fischer, Robert J vs Gligoric, Svetozar — 1/2-1/2 — Bled/Zagreb/Belgrade
1959 — Smyslov, Vladimir vs Gligoric, Sofija — 1/2-1/2 — Kiev UKR
1959 — Tal, Mikhail vs Gligorić, Svetozar — 0-1 — Zurich SUI

10.Bxc6 — 7.5% (24 parties)

1934 — Joss, Hermann vs Johner, Hans — 1/2-1/2 — Zurich SUI
1937 — Lasker, Emanuel vs ? — 1-0 — Chicago, IL USA
1938 — Znosko-Borovsky, Eugene vs Capablanca, Jose — 1/2-1/2 — Paris FRA
1956 — Dueckstein, Andreas vs Sanchez Alpizar, Luis Alberto — 1/2-1/2 — Moscow RUS
1957 — Unzicker, Wolfgang vs Smyslov, Vasily — 1/2-1/2 — AUT

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