C09k — French: Tarrasch, Open, Main Line, 9.Nb3 Bb6

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6 6.Bb5 Bd6 7.O-O Ne7 8.dxc5 Bxc5 9.Nb3 Bb6 * ○ Trait aux Blancs

Ouverture — Centre asymétrique

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur une majorité de pions à l'aile_dame (3 contre 2), les cases fortes d4 et g5, un fou actif en b5, la paire de fous et la colonne semi-ouverte d.

Côté adverse. Le pion isolé d5, le fou enfermé en c8 et le roi resté au centre.

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

Plans. Be3 (Développer Bc1) ; h3 (Empêcher ...Bg4) ; Tour sur colonne e ; Tour sur colonne d.

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur une majorité de pions à l'centre (1 contre 0), la case forte f5, un fou actif en b6, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Le fou enfermé en c1.

En contrepartie. Le roi n'est pas encore à l'abri, plusieurs pièces dorment encore (le fou c8 et les tours a8 et h8) et le pion isolé d5.

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...Bg4 (Développer Bc8, clouer Nf3) ; ...d4 (Rupture) ; ...f6 (Rupture) ; ...f5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	● d5
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	● aile_dame 3v2	● centre 1v0

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (3v2), ● g5 (2v0)	● f5 (2v0)
Cases faibles	● d4	—
Centre	● d4 (3v2)	● d5 (2v1), ● e4 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Ouvertes	● e	● e
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bb5	● Bb5 Actif (mob. 6)
Bb6		● Bb6 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Clouages	● pawn f2	● knight c6
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	asymétrique
Ruptures	● c2-c3	● …d5-d4, ● …f7-f6, ● …f7-f5

Partie
1939 Buenos Aires ol prel-C – Round 7 – Poulsen, Christian – 1-0 – Calleja Sierra, Jesus – G31 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Bd6 6. dxc5 Bxc5 7. Nb3 Bb6 8. Bb5+ Nc6 9. O-O Ne7 10. Bg5 O-O
1940 Moskou ch-URS – Round 1 – Mikenas, Vladas – 0-1 – Stolberg, Mark Moiseevich – G119 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Bg5 10. ... O-O
1940 URS-sf – Round 1 – Rudakovsky, Iosif – 1-0 – Alatortsev, Vladimir N. – G80 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. h3 O-O
1941 Leningrad/Moscow – Round 1 – Botvinnik, Mikhail – 1-0 – Boleslavsky, Isaac – G8 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Be3 Bxe3
1941 Leningrad/Moscow – Round 3 – Botvinnik, Mikhail – 1-0 – Boleslavsky, Isaac – G27 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1943 UJCS-17.Kongress – Round 10 – Louma, Josef – 1-0 – Thelen, Bedrich – G49 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Bf4 O-O
1946 Augsburg 1st – Round 8 – Tautvaisas, Povilas – 0-1 – Zemgalis, Elmars – G16 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1946 Pittsburgh Open – Round 1 – Rauch, Meir – 1-0 – Ulvestad, Olaf – G102 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Bd6 6. dxc5 Bxc5 7. Bb5+ Nc6 8. O-O Ne7 9. Nb3 Bb6 10. Bg5 f6
1946 Stockholm 4647 – Round ? – Book, Eero – 1/2-1/2 – Danielsson, Gosta – G11 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Be3 Bxe3
1948 Bad Gastein – Round 12 – Lokvenc, Josef – 1/2-1/2 – Palme, Rudolf – G91 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Bxc6+ bxc6
1948 GER Ch – Round 10 – Niephaus, Walter – 1-0 – Rautenberg, Wilhelm – G24 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. dxc5 Bxc5 8. Nb3 Bb6 9. O-O Ne7 10. Bd2 O-O
1948 JUG Ch – Round 8 – Bozic, Aleksandar – 1/2-1/2 – Nedeljkovic, Srecko M – G34 1. d4 e6 2. e4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1949 Trencianske Teplice – Round 15 – Rossolimo, Nicolas – 0-1 – Szabo, Ladislav – G96 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1949 URS Ch, semi final – Round 15 – Petrosian, Tigran A. – 1-0 – Kasparian, Genrikh – G113 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. dxc5 Bxc5 8. Nb3 Bb6 9. O-O Ne7 10. Be3 O-O
1950 Mar del Plata – Round 9 – Rossolimo, Nicolas – 1/2-1/2 – Gligorić, Svetozar – G77 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1951 Mar del Plata zt – Round 21 – Rossetto, Hector – 1-0 – Bianco Esposito, Antonio – G214 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1951 World chJ U20 1st – Round 9.4 – Cruz, Raul Ceferino – 1/2-1/2 – Ivkov, Borislav – G26 1. d4 e6 2. e4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Be3 Bxe3
1951 YUG Ch 7th – Round 2 – Karaklajic, Nikola – 1-0 – Kindij Igor – G18 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Bd6 6. dxc5 Bxc5 7. Bb5+ Nc6 8. O-O Ne7 9. Nb3 Bb6 10. Be3 Bxe3
1951 Zonal Bad Pyrmont GER – Round 13 – Gligoric, Svetozar – 1/2-1/2 – Matanovic, Aleksandar – G22 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1952 Havana – Round 21 – Rossolimo, Nicolas – 1/2-1/2 – Gligorić, Svetozar – G153 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1952 Rio de Janeiro – Round 1 – Cruz, Walter – 0-1 – Szentkiralyi Toth, Vince – G6 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1955 Hungary Ch – Round 1 – Pogats, Jozsef Jr. – 1-0 – Gracs, Pal – G59 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Bd6 6. dxc5 Bxc5 7. Nb3 Bb6 8. Bb5+ Nc6 9. O-O Ne7 10. Be3 Bxe3
1960 Leipzig olm fin-B – Round 2 – Jimenez Zerquera, Eleazar – 1/2-1/2 – Staahlberg, Gideon – G28 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Bxc6+ bxc6
1960 Mar del Plata – Round 9 – Eliskases, Erich – 1-0 – Foguelman, Alberto – G78 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bg4
1960 Nimzowitsch Memorial – Round ? – Geller, Efim P – 1/2-1/2 – Stahlberg, Gideon – G54 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1961 Stockholm SWE – Round 10 – Nilsson, Zandor – 1/2-1/2 – Lundin, Erik – G18 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Be3 Bxe3
1962 Budapest-Warsaw m – Round ? – Witkowski, Stefan – 1/2-1/2 – Florian, Tibor – G34 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. dxc5 Bxc5 8. Nb3 Bb6 9. O-O Ne7 10. c3 Bg4
1962 Mar del Plata – Round 2 – Penrose, Justin – 1/2-1/2 – Letelier Martner, Rene – G28 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1964 Amsterdam Interzonal – Round 9 – Tal, Mikhail – 1-0 – Porath, Yosef – G92 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1964 Kiev ch-URS – Round 1 – Krogius, Nikolai V – 1-0 – Goldenov, Boris P – G124 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1964 Tel Aviv olm fin-A – Round 10 – Unzicker, Wolfgang – 1-0 – Porath, Yosef – G226 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1964 Zagreb – Round 7 – Parma, Bruno – 1-0 – Antunac, Goran – G40 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 O-O
1965 Gyula – Round 1 – Haag Vetter, Michael Harry – 0-1 – Korchnoi, Viktor – G12 1. e4 e6 2. d4 d5 3. Nd2 c5 4. dxc5 Bxc5 5. Nb3 Bb6 6. exd5 exd5 7. Nf3 Nc6 8. Bb5 Ne7 9. O-O O-O 10. Nfd4 a6
1967 EU Team Ch preliminary – Round 6 – Johansson, Martin 1979 – 1/2-1/2 – Pachman, Ludek – G34 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1967 Sousse Interzonal – Round 16 – Geller, Efim P – 1/2-1/2 – Ivkov, Borislav – G150 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1967 Sousse Interzonal – Round 4 – Matanovic, Aleksandar – 1/2-1/2 – Gligorić, Svetozar – G37 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1968 Bamberg – Round 5 – Teschner, Rudolf – 1/2-1/2 – Schmid, Lothar – G43 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1968 Bristol ch-BCF – Round 5 – Penrose, Justin – 1/2-1/2 – Keene, Raymond D – G62 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Re1 O-O
1968 Hoogovens – Round 3 – Karaklajic, Nikola – 1/2-1/2 – Matanovic, Aleksandar – G40 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Be3 Bxe3
1968 Hoogovens – Round 9 – Ciric, Dimitrije – 1/2-1/2 – Ivkov, Borislav – G81 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1968 Mar del Plata ch-ARG – Round 4 – Rubinetti, Jorge – 1/2-1/2 – Palermo, Vicente – G33 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1968 ROM Ch – Round 16 – Ghizdavu, Dumitru – 1/2-1/2 – Botez, Constantin – G93 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Nbd4 O-O
1968 Skopje/Ohrid – Round 3 – ? – 1/2-1/2 – Matulovic, Milan – G25 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Be3 Bxe3
1968 Skopje/Ohrid – Round 5 – Geller, Efim P – 1/2-1/2 – Matulovic, Milan – G45 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Re1 Bg4
1968 Southend – Round ? – Hartston, William R – 1/2-1/2 – Whiteley, Andrew Jonathan – G28 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Re1 O-O
1969 Hoogovens – Round 15 – Ciric, Dimitrije – 1/2-1/2 – Donner, H. – G130 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Be3 Bxe3
1969 OWL Ch – Round 11 – Soelter, Reinhold – 1/2-1/2 – Oestreich, Reinhard – G23 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1969 Rubinstein Memorial – Round 11 – Ivkov, Borislav – 1/2-1/2 – Krogius, Nikolai V – G50 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Be3 Bxe3
1975 URS Team Ch – Round ? – Golovey, Tamara O – 1-0 – Nevednichaia, Raisa – G480 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Re1 O-O
Brussels 1987 – Round 1 – Van der Wiel, John T.H. – 0-1 – Korchnoi, Viktor – G32 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Be3 Bxe3
Qatar Masters Open 2015 – Round 3.21 – Akopian, Vladimir – 1-0 – Sundararajan, Kidambi – G101 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Re1 O-O
World Blitz 2019 – Round 6.42 – Adhiban, B. – 0-1 – Vastrukhin, Oleg – G415 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bb6 10. Re1 O-O
World Blitz 2019 – Round 8.45 – Zvjaginsev, Vadim – 1/2-1/2 – Vastrukhin, Oleg – G557 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. Nb3 Bb6 9. O-O Ne7 10. Bd3 O-O
Yerevan ol (Men) 1996 – Round 4 – Svidler, Peter – 1-0 – Lobron, Eric – G60 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Re1 O-O

C09k — Tarrasch Open Main Line

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6 6.Bb5 Bd6 7.O-O Ne7 8.dxc5 Bxc5 9.Nb3 Bb6

Eval: [+0.37]

Les coups candidats

10.Re1 — 50.2% (409 parties)

Ambassadeurs : Casper, Thomas (23x), Vastrukhin, Oleg (11x), Kuhn, Norbert (9x), Shtyrenkov, Veniamen (8x), Kekki, Jorma (7x), Berelowitsch, Alexander (7x), ? (6x), Raessler, Arndt (6x)

10.Be3 — 11.7% (95 parties)

Ambassadeurs : Ivkov, Borislav (7x), Krogius, Nikolai V (4x), Rossolimo, Nicolas (3x), Gligorić, Svetozar (3x), Matanovic, Aleksandar (3x), Kasparian, Genrikh (2x), Botvinnik, Mikhail (2x), Boleslavsky, Isaac (2x)

10.c3 — 11.7% (95 parties)

Ambassadeurs : Kekki, Jorma (6x), Walther, Edgar (2x), Rivas Pastor, Manuel (2x), Vescovi, Giovanni (2x), Maciol, Ryszard (2x), Zatonskih, Anna (2x), Kostolansky, Sebastian Lukas (2x), Vastrukhin, Oleg (2x)

10.Bg5 — 10.1% (82 parties)

Ambassadeurs : Kekki, Jorma (4x), Radulov, Ivan (2x), Casper, Thomas (2x), Poulsen, Christian (1x), Calleja Sierra, Jesus (1x), Rauch, Meir (1x), Ulvestad, Olaf (1x), Mikenas, Vladas (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10.Re1	10.Be3	10.c3	10.Bg5
<1800	15	60%	—	7%	7%
1800-2200	196	47%	3%	16%	15%
2200-2600	375	59%	6%	11%	8%
2600+	12	67%	8%	—	8%

Évolution par décennie (% des parties)

Décennie	N parties	10.Re1	10.Be3	10.c3	10.Bg5
1930s	1	—	—	—	100%
1940s	20	—	50%	5%	10%
1950s	16	—	75%	25%	—
1960s	34	15%	76%	3%	—
1970s	79	47%	18%	8%	15%
1980s	98	53%	11%	12%	9%
1990s	150	57%	7%	13%	7%
2000s	185	61%	5%	10%	12%
2010s	179	54%	1%	13%	12%
2020s	52	40%	2%	17%	8%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10.Re1	54%	40%	▼ -13.2%
10.Be3	1%	2%	▲ +1.4%
10.c3	13%	17%	▲ +3.9%
10.Bg5	12%	8%	▼ -4.0%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 2 parties
Karpov, Anatoly — 2 parties
Tal, Mikhail — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

10.Re1 — 50.2% (409 parties)

1968 — Penrose, Justin vs Keene, Raymond D — 1/2-1/2 — Bristol ch-BCF
1968 — Geller, Efim P. vs Spassky, Boris Vasily — 1/2-1/2 — Sukhumi GEO
1968 — Tate, Les S vs Thomas, Richard Huw — 1-0 — Bristol ch-BCF
1968 — Hartston, William R vs Whiteley, Andrew Jonathan — 1/2-1/2 — Southend
1968 — Geller, Efim P. vs Matulovic, Milan — 1/2-1/2 — Skopje MKD

10.Be3 — 11.7% (95 parties)

1941 — Botvinnik, Mikhail vs Boleslavsky, Isaac — 1-0 — Leningrad RUS
1941 — Botvinnik, Mikhail vs Boleslavsky, Isaac — 1-0 — Leningrad RUS
1946 — Tautvaisas, Povilas vs Zemgalis, Elmars — 0-1 — Augsburg GER
1946 — Book, Eero vs Danielsson, Gosta — 1/2-1/2 — Stockholm SWE
1946 — Kamyshov, Mikhail vs Baturinsky, Victor — 1/2-1/2 — Moscow RUS

10.c3 — 11.7% (95 parties)

1940 — Bondarevsky, Igor vs Boleslavsky, Isaac — 1/2-1/2 — Moskou ch-URS
1953 — Bogdanovic, Rajko vs Gligoric, Svetozar — 1/2-1/2 — YUG
1953 — Milic, Borislav vs Kupper, Josef — 1-0 — Vienna AUT
1958 — Walther, Edgar vs Acuna Pereira, Allison Gabriela — 1-0 — Munich GER
1959 — De Souza Mendes, Joao vs Letelier Martner, Rene — 1/2-1/2 — Santiago CHI

10.Bg5 — 10.1% (82 parties)

1939 — Poulsen, Christian vs Calleja Sierra, Jesus — 1-0 — Buenos Aires ol pr-C
1940 — Mikenas, Vladas vs Stolberg, Mark Moiseevich — 0-1 — Moskou ch-URS
1946 — Rauch, Meir vs Ulvestad, Olaf — 1-0 — Pittsburgh
1970 — Lechtynsky, Jiri vs Fichtl, Jiri — 1/2-1/2 — Havirov CZE
1972 — Radulov, Ivan vs Bobotsov, Milko G — 1/2-1/2 — Sofia BUL

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