D27r — QGA: Classical, Rubinstein, 8.Nc3 Be7

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4 Nc6 8.Nc3 Be7 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Atouts. Les Blancs s'appuient sur une majorité de pions à l'centre (2 contre 1), la case forte e5, un fou actif en c4, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Les fous enfermés en e7 et c8 et le roi resté au centre.

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

Plans. Bd2 (Développer Bc1) ; h3 (Empêcher ...Bg4) ; Tour sur colonne c.

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Atouts. Les Noirs s'appuient sur une majorité de pions à l'aile_dame (3 contre 2), les cases fortes b4 et d5, des avant-postes en b4 et d5, la paire de fous et la colonne semi-ouverte d.

Côté adverse. Le fou enfermé en c1.

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) ; ...Bd7 (PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bg4, ...Bf5)) ; ...Na5 (Attaquer Bc4) ; ...Bg4 (Clouer Nf3) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→e3, e3→d4	● b7→a6, f7→e6
Passés	—	—
Majorité	● centre 2v1	● aile_dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (2v1)	● b4 (2v0), ● d5 (3v2)
Cases faibles	—	—
Centre	● e5 (2v1)	● d5 (3v2)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bc4	● Bc4 Actif (mob. 8)
Be7		● Be7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 1)
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	semi-ouvert
Ruptures	● d4-d5, ● e3-e4	● …e6-e5

Partie
1906 Ostende – Round 1 – Teichmann, Richard – 1-0 – Janowski, Dawid – G2 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 a6 5. a4 c5 6. e3 e6 7. Bxc4 Nc6 8. O-O Be7 9. dxc5 Qc7 10. Qe2 Bxc5
1909 St Petersburg – Round 1 – Duz-Khotimirsky, Fedor Ivanovich – 0-1 – Teichmann, Richard – G25 1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. c4 dxc4 6. Bxc4 a6 7. a4 Nc6 8. Nc3 Be7 9. O-O O-O 10. Qe2 cxd4
1923 Karlsbad – Round 1 – Saemisch, Friedrich – 1-0 – Wolf Heinrich – G104 1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. Qd2 O-O 10. Rd1 Qc7
1925 Marienbad – Round 7 – Marshall Viele, Fabrizio Aaron – 1-0 – Janowski, Dawid – G42 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Nc3 a6 5. a4 c5 6. e3 e6 7. Bxc4 Nc6 8. O-O Be7 9. b3 O-O 10. Bb2 cxd4
1925 Moscow – Round 1 – Verlinsky, Boris – 1-0 – Levenfish, Grigory – G26 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. d5 exd5 10. Nxd5 O-O
1929 Karlsbad – Round 14 – Saemisch, Friedrich – 1/2-1/2 – Treybal, Karel – G188 1. d4 d5 2. c4 e6 3. Nc3 a6 4. e3 Nf6 5. Nf3 dxc4 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. Qd3 b6 10. Rd1 Bb7
1930 Hamburg ol – Round 13 – Flohr, Salo – 1/2-1/2 – Rubinstein, Akiba – G9 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 a6 5. a4 c5 6. e3 e6 7. Bxc4 Nc6 8. O-O Be7 9. dxc5 Qxd1 10. Rxd1 Bxc5
1930 Scarborough – Round 9 – Thomas, George Alan – 1/2-1/2 – Rubinstein, Akiba – G49 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Nc3 a6 5. a4 c5 6. e3 e6 7. Bxc4 Nc6 8. O-O Be7 9. dxc5 Qxd1 10. Rxd1 Bxc5
1931 Berlin – Round 2 – Steiner, Herman – 0-1 – Saemisch, Friedrich – G10 1. d4 d5 2. c4 dxc4 3. Nc3 Nf6 4. Nf3 a6 5. a4 c5 6. e3 e6 7. Bxc4 Nc6 8. O-O Be7 9. Qd3 O-O 10. Rd1 cxd4
1931 Prague ol Prague CZE – Round 13 – Flohr, Salo – 1/2-1/2 – Rubinstein, Akiba – G40 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 a6 6. a4 c5 7. O-O Nc6 8. Nc3 Be7 9. dxc5 Bxc5 10. Qxd8+ Kxd8
1933 Folkestone Olympiad 5th – Round 15.25 – Rosselli del Turco, Stefano – 1-0 – Gruenfeld, Ernst – G126 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. O-O c5 7. a4 Nc6 8. Nc3 Be7 9. dxc5 Bxc5 10. Qe2 Qc7
1939 Buenos Aires ol f-A – Round 15 – Apscheneek, Fricis – 1-0 – Lundin, Erik – G288 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Nc3 c5 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. dxc5 O-O 10. Qc2 Nb4
1947 Warsaw – Round 6 – Gadalinski, Jan – 0-1 – Gligorić, Svetozar – G30 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 a6 5. a4 e6 6. e3 c5 7. Bxc4 Nc6 8. O-O Be7 9. b3 O-O 10. Bb2 Qc7
1947 Yugoslavia Ch – Round 6 – Milic, Borislav – 0-1 – Trifunovic, Petar – G27 1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. e3 Nf6 5. Bxc4 e6 6. O-O a6 7. a4 Nc6 8. Nc3 Be7 9. b3 cxd4 10. exd4 O-O
1951 Mar del Plata zt – Round 14 – Sumar, Julio – 1/2-1/2 – Alvarez Martin, Pedro – G134 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. O-O a6 7. a4 Nc6 8. Nc3 Be7 9. b3 cxd4 10. exd4 O-O
1951 YUG Ch 7th – Round 14 – Nedeljkovic, Srecko M – 1/2-1/2 – Andric, Dragoslav – G113 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. a4 Nc6 8. Nc3 Be7 9. b3 O-O 10. Bb2 cxd4
1952 Miedzyzdroje – Round 14 – Pytlakowski, Andrzej – 1-0 – Gawlikowski, Stanislaw – G87 1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. e3 Nf6 5. Bxc4 e6 6. Nc3 a6 7. a4 Nc6 8. O-O Be7 9. Qd3 O-O 10. Rd1 cxd4
1953 Opatija – Round 5 – Vidmar, Milan Jr – 1/2-1/2 – Unzicker, Wolfgang – G36 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. a4 Nc6 8. Nc3 Be7 9. dxc5 Qc7 10. Qe2 Bxc5
1955 Hungary Ch – Round 1 – Bilek, Istvan – 1/2-1/2 – Gracs, Pal – G78 1. Nf3 d5 2. c4 e6 3. d4 dxc4 4. Nc3 c5 5. e3 a6 6. a4 Nc6 7. Bxc4 Nf6 8. O-O Be7 9. Ne5 Bd7 10. Nxd7 Qxd7
1958 Open – Round 3 – Blackstone, John – 0-1 – Gross, Benjamin – G4 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. Nc3 e6 5. e3 c5 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. dxc5 Qxd1 10. Rxd1 Bxc5
1960 UKR Ch sf – Round 8 – Stein, Leonid – 1/2-1/2 – Ousatchi, Mark – G47 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. a4 Nc6 8. Nc3 Be7 9. d5 exd5 10. Nxd5 Nxd5
1961 Katowice ch18-POL – Round 1 – Borowski, Natan – 1/2-1/2 – Kostro, Jerzy – G11 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 c5 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. b3 O-O 10. Bb2 cxd4
1963 Leningrad ch-URS – Round ? – Bronstein, David I – 1/2-1/2 – Klovans, Janis – G150 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nc3 a6 6. a4 c5 7. Nf3 Nc6 8. O-O Be7 9. b3 O-O 10. Bb2 cxd4
1964 Capablanca Memorial – Round 21 – Bielicki, Carlos – 1/2-1/2 – Portisch, Lajos – G205 1. c4 e6 2. d4 Nf6 3. Nc3 c5 4. e3 d5 5. Nf3 dxc4 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. b3 O-O 10. Bb2 Bd7
1965 Brno m 6465 – Round 11 – Zavodny, Zdenek – 1-0 – Kalendovsky, Jan – G8 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 e6 5. e3 c5 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. dxc5 Qxd1 10. Rxd1 Bxc5
1965 HUN-ch21 – Round 1 – Kluger, Gyula – 1/2-1/2 – Portisch, Lajos – G6 1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 Nf6 5. Bxc4 e6 6. O-O c5 7. a4 Nc6 8. Nc3 Be7 9. Ne5 Bd7 10. Nxd7 Qxd7
1965 Mar del Plata – Round 6 – Bielicki, Carlos – 0-1 – Aguayo Cruz, Ramon Uriel – G48 1. d4 Nf6 2. c4 c5 3. e3 e6 4. Nc3 d5 5. Nf3 dxc4 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. Qd3 O-O 10. Rd1 cxd4
1965 Titograd – Round 1 – Cebalo, Miso – 1/2-1/2 – Marić, Rudolf – G1 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. a4 c5 7. O-O Nc6 8. Nc3 Be7 9. Ne5 O-O 10. Nxc6 bxc6
1966 La Habana olm fin-B – Round 5 – Kalotay, Andrew – 1/2-1/2 – Hartston, William R – G70 1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. e3 d5 5. d4 dxc4 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. dxc5 Bxc5 10. Qe2 O-O
1966 Zinnowitz – Round 13 – Gromek, Jozef – 0-1 – Fuchs, Reinhart – G26 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. e3 c5 5. d4 Nc6 6. Be2 dxc4 7. Bxc4 a6 8. a4 Be7 9. O-O O-O 10. Qe2 cxd4
1967 Hastings6768 – Round 9 – Hort, Vlastimil – 1-0 – Hartston, William R – G41 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. Nc3 a6 7. a4 Nc6 8. O-O Be7 9. Ne5 O-O 10. Nxc6 bxc6
1968 Monte Carlo – Round 13 – Padevsky, Nikola – 1/2-1/2 – Forintos, Gyozo V – G82 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 a6 6. a4 c5 7. O-O Nc6 8. Nc3 Be7 9. b3 O-O 10. Bb2 cxd4
1969 Hoogovens – Round 1 – Ujtelky, Maximilian – 1/2-1/2 – Kozma, Julius – G3 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c5 5. e3 dxc4 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. dxc5 Qxd1 10. Rxd1 Bxc5
Amber-rapid 18th 2009 – Round 5 – Kramnik, Vladimir – 1/2-1/2 – Topalov, Veselin – G14 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. dxc5 Qxd1 10. Rxd1 Bxc5
Amber-rapid 20th 2011 – Round 2 – Anand, Viswanathan – 1/2-1/2 – Kramnik, Vladimir – G6 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. e3 c5 5. Nc3 dxc4 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. dxc5 Qxd1 10. Rxd1 Bxc5
Azerbaijanian vs World Rapid 2009 – Round 5 – Mamedyarov, Shakhriyar – 1/2-1/2 – Anand, Viswanathan – G5 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. Ne5 cxd4 10. Nxc6 bxc6
Biel Interzonal 1993 – Round 10 – Piket, Jeroen – 1/2-1/2 – Anand, Viswanathan – G219 1. d4 d5 2. c4 dxc4 3. Nc3 Nf6 4. e3 e6 5. Bxc4 a6 6. a4 c5 7. Nf3 Nc6 8. O-O Be7 9. Ne5 cxd4 10. Nxc6 bxc6
FIDE World Cup 2017 – Round 1.1 – Akobian, Varuzhan – 0-1 – Kovalyov, Anton – G27 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. dxc5 Bxc5 10. Qe2 Qc7
Mar del Plata 1982 – Round 1 – Najdorf, Miguel – 1/2-1/2 – Portisch, Lajos – G50 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. e3 d5 5. d4 dxc4 6. Bxc4 a6 7. a4 Nc6 8. O-O Be7 9. Qd3 O-O 10. Rd1 cxd4
Moscow Superblitz 2006 – Round 1 – Grachev, Boris – 0-1 – Dreev, Aleksey – G1 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 a6 6. Be2 dxc4 7. a4 c5 8. Bxc4 Nc6 9. O-O Be7 10. Ba2 O-O
Novgorod 1997 – Round 8 – Bareev, Evgeny – 1/2-1/2 – Kasparov, Garry – G21 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. dxc5 Qxd1 10. Rxd1 Bxc5
Saint Louis Blitz 2018 – Round 2.2 – Mamedyarov, Shakhriyar – 1/2-1/2 – Dominguez Perez, Leinier – G7 1. c4 e6 2. Nf3 d5 3. e3 Nf6 4. Nc3 dxc4 5. Bxc4 a6 6. a4 c5 7. d4 Nc6 8. O-O Be7 9. Ne5 Bd7 10. Nxd7 Qxd7
Siegen olm 1970 – Round 8 – Belliard Alonzo, Luis Manuel – 0-1 – Spaete, Erwin – G8 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. a4 Nc6 8. Nc3 Be7 9. Qd3 O-O 10. Rd1 cxd4
Tal Memorial 2009 – Round 7 – Anand, Viswanathan – 1/2-1/2 – Morozevich, Alexander – G29 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. dxc5 O-O 10. Qc2 Bxc5
World Blitz 2007 – Round 17 – Korotylev, Alexey – 1/2-1/2 – Grischuk, Alexander – G159 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 a6 5. Bd3 dxc4 6. Bxc4 e6 7. a4 c5 8. Nf3 Nc6 9. O-O Be7 10. Ne5 cxd4
World Blitz 2009 – Round 2 – Karpov, Anatoly – 1/2-1/2 – Kosteniuk, Alexandra – G13 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. dxc5 Qc7 10. b3 Bxc5
World Blitz 2009 – Round 28 – Aronian, Levon – 0-1 – Kosteniuk, Alexandra – G283 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. dxc5 Qc7 10. Qc2 Bxc5
World Blitz 2021 – Round 21.37 – Corrales Jimenez, Fidel – 0-1 – Pichot, Alan – G1228 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O Be7 9. Bb3 O-O 10. dxc5 Qc7

D27r — Classical Rubinstein

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4 Nc6 8.Nc3 Be7

Eval: [+0.15]

Les coups candidats

9.Qe2 — 48.8% (1276 parties) →

Ambassadeurs : Mikhalchishin, Adrian (6x), Gruenfeld, Ernst (5x), Aronian, Levon (5x), Khenkin, Igor (5x), Ehlvest, Jaan (5x), Cyborowski, Lukasz (5x), Rubinstein, Akiba (4x), Gerber, Richard (4x)

9.dxc5 — 24.6% (643 parties)

Ambassadeurs : Nielsen, Peter Heine (4x), Sokolov, Ivan (4x), Rubinstein, Akiba (3x), Epishin, Vladimir (3x), SteakTartare (3x), Babiy, Olga (3x), Duenas, Alexis (3x), Ivanchuk, Vasyl (3x)

9.b3 — 7.8% (203 parties)

Ambassadeurs : Naumkin, Igor (4x), Janowski, Dawid (3x), Marshall, Frank (2x), Marshall Viele, Fabrizio Aaron (2x), Gurevich, Michael (2x), Ibryamov, Ilhan (2x), Kazmierczak, Ewa (2x), Manolache, Marius (2x)

9.Ne5 — 5.3% (139 parties)

Ambassadeurs : Pinter, Jozsef (6x), Sher, Miron (3x), Polajzer, Danilo (3x), Zheliandinov, Viktor (3x), Mamedyarov, Shakhriyar (3x), Greenfeld, Alon (2x), Piket, Jeroen (2x), Wijnans, Artur Joseph (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.Qe2	9.dxc5	9.b3	9.Ne5
<1800	34	29%	38%	15%	—
1800-2200	643	36%	27%	11%	5%
2200-2600	1459	57%	21%	6%	6%
2600+	123	51%	36%	2%	7%

Évolution par décennie (% des parties)

Décennie	N parties	9.Qe2	9.dxc5	9.b3	9.Ne5
1900s	4	50%	25%	25%	—
1910s	1	—	—	—	—
1920s	15	33%	13%	27%	7%
1930s	27	41%	22%	15%	—
1940s	17	47%	24%	12%	6%
1950s	16	50%	19%	19%	6%
1960s	38	47%	13%	16%	13%
1970s	33	61%	9%	9%	6%
1980s	117	65%	13%	4%	6%
1990s	350	47%	20%	7%	9%
2000s	791	49%	26%	7%	4%
2010s	894	47%	28%	8%	5%
2020s	310	52%	27%	5%	5%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.Qe2	47%	52%	▲ +5.0%
9.dxc5	28%	27%	▼ -0.7%
9.b3	8%	5%	▼ -3.2%
9.Ne5	5%	5%	+0.1%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 5 parties
Anand, Viswanathan — 5 parties
Karpov, Anatoly — 4 parties
Karpov, Aleksandr — 2 parties
Kasparov, Garry — 2 parties
Kramnik, Vladimir — 2 parties
Smyslov, Vladimir — 1 partie
Ju, Wenjun — 1 partie
Gukesh D — 1 partie

Parties historiques

9.Qe2 — 48.8% (1276 parties)

1906 — Tarrasch, Siegbert vs Janowski, Dawid — 1-0 — Nuerenberg GER
1907 — Nimzowitsch, Aron vs Neumann, Augustin — 1/2-1/2 — Vienna AUT
1923 — Rubinstein, Akiba vs Wolf, Hans-Josef — 0-1 — Carlsbad CZE
1925 — Vajda, Arpad vs Johner, Paul — 1/2-1/2 — Debrecen HUN
1925 — Verlinsky, Boris vs Gruenfeld, Ernst — 1/2-1/2 — Moscow RUS

9.dxc5 — 24.6% (643 parties)

1906 — Teichmann, Richard vs Janowski, Dawid — 1-0 — Ostende
1925 — Lenglez, Marcel vs Dunkelblum, Arthur — 1/2-1/2 — Brussels BEL
1925 — Opocensky, Karel vs Tartakower, Savielly — 0-1 — Paris FRA
1930 — Flohr, Salo vs Rubinstein, Akiba — 1/2-1/2 — Hamburg GER
1930 — Thomas, George Alan vs Rubinstein, Akiba — 1/2-1/2 — Scarborough ENG

9.b3 — 7.8% (203 parties)

1906 — Marshall, Frank vs Teichmann, Richard — 0-1 — Ostend
1921 — Marshall, Frank vs Janowski, Dawid — 0-1 — Atlantic City
1925 — Opocensky, Karel vs Janowski, Dawid — 1/2-1/2 — it Marienbad Czech Republic
1925 — Marshall Viele, Fabrizio Aaron vs Janowski, Dawid — 1-0 — Marienbad CZE
1927 — Marshall Viele, Fabrizio Aaron vs Buerger, Victor — 1-0 — London ENG

9.Ne5 — 5.3% (139 parties)

1927 — Flohr, Salo vs Dyk, Viktor — 1-0 — Prague CZE
1940 — Wijnans, Artur Joseph vs Landau, Salo — 1/2-1/2 — NED
1955 — Bilek, Istvan vs Gracs, Pal — 1/2-1/2 — Hungary ch
1965 — Kluger, Gyula vs Portisch, Lajos — 1/2-1/2 — Budapest HUN
1965 — Zingler, Max vs Schmidt, Gerhard — 1-0 — Bourgas BUL

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