B45s — Sicilian: Taimanov, Four Knights, 6.Ndb5 Bb4 7.a3 Bxc3+ 8.Nxc3 d5

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Ndb5 Bb4 7.a3 Bxc3+ 8.Nxc3 d5 * ○ Trait aux Blancs

Ouverture — Tension centrale

♔ 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), la case forte b5, la paire de fous et la colonne semi-ouverte d.

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

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (les fous c1 et f1 et les tours a1 et h1).

Plans. Bg5 (Clouer Nf6) ; Bd3 (Développer Bf1).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Attaque sur le roi adverse resté au centre.

Atouts. Les Noirs s'appuient sur une majorité de pions à l'centre (2 contre 1) et la colonne semi-ouverte c.

Côté adverse. Les fous enfermés en c1 et f1 et le roi resté au centre.

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, ...Bf5)) ; ...d4 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→a3	● e6→d5, f7→e6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0)	—
Cases faibles	● e4	—
Centre	—	● e4 (2v1), ● e5 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 5)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	Non
Non développées	4 (● c1, ● f1, ● a1, ● h1)	3 (● c8, ● a8, ● h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Au centre !
Droits de roque	O-O / O-O-O	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	tension
Ruptures	● e4-e5, ● f2-f3	● …d5-d4, ● …e6-e5

Partie
1901 Buffalo – Round 3 – Napier, William – 1-0 – Karpinski, Louis Charles – G8 1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Bxe4 Qxd1+
1901 Buffalo – Round 5 – Pillsbury, Harry – 1-0 – Karpinski, Louis Charles – G13 1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Qg4 Nxc3
1912 DSB-18.Kongress – Round 12 – Rubinstein, Akiba – 1-0 – Balla, Zoltan Tibor – G91 1. d4 e6 2. Nf3 c5 3. e4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1921 DSB-21.Kongress – Round 5 – John Wade Wec-Nyin – 0-1 – Saemisch, Friedrich – G22 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1939 Buenos Aires ol f-A – Round 1 – Capablanca, Jose – 1/2-1/2 – Tartakower, Savielly – G14 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1941 Mar del Plata – Round 16 – Sulik, Franciszek – 1/2-1/2 – Bolbochan, J. – G126 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1943 Mar del Plata – Round 8 – Michel, Pascal – 1/2-1/2 – Concepcion Villegas, Bryan Uriel – G58 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1944 La Plata Jockey Club – Round 1 – Pilnik, Herman – 1/2-1/2 – Bolbochan, Julio – G5 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1944 Mar del Plata – Round 14 – Michel, Pascal – 1/2-1/2 – Rossetto, Hector – G111 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1945 Pan American – Round 1 – Cruz, Walter – 1/2-1/2 – Pilnik, Herman – G34 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1946 Mar del Plata – Round 10 – Michel, Pascal – 1-0 – Corte, Cesar J – G95 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1949 Opatija m – Round 7 – Najdorf, Miguel – 1/2-1/2 – Trifunovic, Petar – G6 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1951 YUG Ch 7th – Round 2 – Matanovic, Aleksandar – 1-0 – Janosevic, Dragoljub – G15 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1952 Helsinki olm – Round 1 – Schmid, Leo – 1/2-1/2 – Bolbochan, J. – G202 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1952 Miedzyzdroje – Round 4 – Bobotsov, Milko G – 1/2-1/2 – Makarczyk, Kazimierz – G23 1. e4 c5 2. d4 cxd4 3. Nf3 Nc6 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1953 Hastings ch-BCF – Round 8 – Clarke, Paul R H – 1-0 – Goodman Millman, Jose Luis – G74 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 O-O 10. O-O h6
1954 Montevideo – Round 1 – Toran Albero, Roman – 1/2-1/2 – Trompowsky, Octavio – G20 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Ne4 f5
1954 Zuerich – Round 11 – Kupper, Josef – 1-0 – Szabados, Eugenio – G32 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1954 Zuerich Zurich SUI – Round 11 – Schmid, Lothar – 1/2-1/2 – Bhend, Edwin – G25 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1955 Erfurt – Round 1 – Balanel, Ion – 1/2-1/2 – Alster D – G13 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 O-O 10. O-O h6
1955 Gothenburg Interzonal – Round 1 – Keres, Paul Petrovich – 1/2-1/2 – Donner, Jan-Hein – G7 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1955 Long Beach US-open – Round 8 – Levy, Louis – 1/2-1/2 – Seidman, Herbert – G37 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1955 Mar del Plata – Round 4 – Pilnik, Herman – 1/2-1/2 – Toran Albero, Roman – G30 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1956 Hoogovens – Round 1 – Roessel, Florian – 0-1 – Orbaan, Constant – G4 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1956 Moscow olm fin-B – Round 8 – O'Kelly, Albéric de Galway – 1/2-1/2 – Stahlberg, Gideon – G94 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1956 URS Ch sf – Round ? – Khasin, Abram – 1/2-1/2 – Aronin, Lev – G77 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1957 Clare Benedict Cup 04th – Round 5 – Porreca, Giorgio – 1-0 – Muffang, Andre – G33 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1957 Hoogovens – Round 1 – Matanovic, Aleksandar – 1-0 – Bink, Johan – G3 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1957 Moskou ch-URS – Round 20 – Boleslavsky, Isaac – 1/2-1/2 – Khasin, Abram – G203 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1957 Reykjavik – Round 10 – Pilnik, Herman – 1/2-1/2 – Stahlberg, Gideon – G59 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1957 Wageningen zt – Round 1 – Ivkov, Borislav – 1/2-1/2 – Trifunovic, Petar – G5 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1958 Portoroz Interzonal – Round 11 – De Greif, Boris – 1/2-1/2 – Neikirkh, Oleg – G106 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1958 Riga ch-URS – Round 17 – Krogius, Nikolai V – 1/2-1/2 – Tal, Mikhail – G132 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 O-O 10. O-O h6
1959 ch – Round 9 – Gromek, Jozef – 1/2-1/2 – Doda, Zbigniew – G11 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1959 FRG Ch Nuerenberg GER – Round 4 – Schmid, Lothar – 1-0 – Eisinger Max – G12 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1959 HUN Ch 15th – Round 19 – Foldi, Jozsef – 1/2-1/2 – Navarovszky, Laszlo – G69 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1959 Mar del Plata – Round 1 – Fischer, Raphael – 1-0 – Bolbochan, J. – G55 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1960 Baltic Nations – Round 6 – Unzicker, Wolfgang – 1/2-1/2 – Nei, Iivo – G14 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 e5
1960 Leningrad tt – Round 8 – Szabo, Iuliu inactive – 1-0 – Van Oosterom, Joop – G105 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1960 Olympiad prel III – Round 5 – Myagmarsuren, Lkhamsuren – 0-1 – Blom, Kaj – G38 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 O-O 10. O-O d4
1961 Corr – Round 1 – Silli, Ana-Maria – 0-1 – Palmiotto, Fiorentino – G7 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 O-O 10. O-O h6
1961 CSR Ch – Round 15 – Kavalek, Lubomir – 1/2-1/2 – Skacel, Jan – G144 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1961 FRG Ch – Round 3 – Unzicker, Wolfgang – 1-0 – Mohrlok, Dieter – G5 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1961 FRG Ch 06th – Round 14 – Unzicker, Wolfgang – 1/2-1/2 – Joppen, Egon – G33 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1961 Moscow Ch – Round 10 – Vasiukov, Evgeni – 1-0 – Kuznetsov Dmitry And. – G26 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1961 Oberhausen etc – Round 1 – Darga, Klaus – 1/2-1/2 – Trifunovic, Petar – G36 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1961 Stockholm – Round 3 – Keres, Paul Petrovich – 1/2-1/2 – Stahlberg, Gedeon – G6 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1961 Zagreb – Round 3 – Sokolov, Vladimir – 1/2-1/2 – Ciric, Dragoljub M – G39 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1962 Capablanca Memorial – Round 14 – Ivkov, Borislav – 1-0 – Cobo Arteaga, Eldis – G140 1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1962 Erevan ch-URS – Round 1 – Kholmov, Ratmir D – 1/2-1/2 – Zaitsev, Alexander – G121 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qh4
1962 New York ch-USA – Round 7 – Fischer, Raphael – 1-0 – Addison, Wiliam G – G39 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1963 Capablanca Memorial – Round 13 – Trifunovic, Petar – 1/2-1/2 – Ivkov, Borislav – G124 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1963 Liberation – Round 11 – Matulovic, Milan – 1/2-1/2 – Ciric, Dimitrije – G39 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1963 Nt Helmbrechts GER – Round 10 – Pesch, Werner – 1/2-1/2 – Gerusel, Mathias – G42 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1963 Zenica ch YUG – Round 13 – Trifunovic, Petar – 1/2-1/2 – Ivkov, Borislav – G72 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1964 Amsterdam Interzonal – Round 1 – Ivkov, Borislav – 1/2-1/2 – Gligorić, Svetozar – G5 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1964 Belgrade – Round 13 – ? – 1/2-1/2 – Trifunovic, Petar – G92 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1964 Belgrade – Round 7 – Matanovic, Aleksandar – 1-0 – Flesch, Janos – G53 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1964 Capablanca Memorial – Round 12 – Robatsch, Karl – 1/2-1/2 – Stahlberg, Gideon – G120 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
1964 Kislovodsk – Round ? – Tal, Mikhail – 1-0 – Liberzon, Vladimir M – G31 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1964 Liberation – Round 7 – Matanovic, Aleksandar – 1-0 – Flesch, Janos – G20 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1964 Sarajevo 07th – Round 10 – Ciocaltea, Victor – 1/2-1/2 – Gufeld, Eduard – G24 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1964 Sarajevo 07th – Round 12 – Ciocaltea, Victor – 1/2-1/2 – Trifunovic, Petar – G30 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1964 Sarajevo BIH – Round 3 – Bogdanovic, Rajko – 1/2-1/2 – Trifunovic, Petar – G6 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1964 Zagreb – Round 5 – Parma, Bruno – 1/2-1/2 – Bertok, Mario Jr. – G28 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1965 Budapest2 – Round 15 – Dely, Peter – 1/2-1/2 – Lengyel, Levente – G56 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1965 Hamburg etc – Round 1 – Parma, Bruno – 1/2-1/2 – Teschner, Rudolf – G27 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1965 It – Round 1 – Dely, Peter – 1/2-1/2 – Flesch, Janos – G2 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1965 Novi Sad – Round 1 – Bogdanovic, Rajko – 1/2-1/2 – Bertok, Mario Jr. – G12 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1965 Novi Sad – Round 1 – Parma, Bruno – 1/2-1/2 – Bradvarevic, Aleksandar – G14 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1965 Novi Sad – Round 11 – Ostojic, Predrag – 1/2-1/2 – Bradvarevic, Aleksandar – G92 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
1965 POL Ch 22th – Round 2 – Brzozka, Stefan – 1/2-1/2 – Doda, Zbigniew – G9 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1965 Tallinn ch-URS – Round 11 – Gufeld, Eduard – 1/2-1/2 – Khasin, Abram – G135 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1965 Tbilisi Tbilisi GEO – Round 1 – Gipslis, Aivars – 1/2-1/2 – Damjanovic, Mato – G40 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1965 Titograd – Round 1 – Ciric, Dragoljub M – 1/2-1/2 – Bertok, Mario Jr. – G10 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1965 Titograd – Round 13 – Parma, Bruno – 1/2-1/2 – Bradvarevic, Aleksandar – G97 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qf6
1965 Titograd – Round 16 – Parma, Bruno – 1/2-1/2 – Matulovic, Milan – G115 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qh4
1965 Titograd – Round 17 – Matanovic, Aleksandar – 1/2-1/2 – Bradvarevic, Aleksandar – G124 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qh4
1965 Yerevan – Round 2 – Schmid, Leo – 1/2-1/2 – Stahlberg, Gideon – G12 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1966 Clare Benedict Cup 13th – Round 5 – Zuidema, Coen – 1/2-1/2 – Kottnauer, Cenek – G19 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1966 Kislovodsk – Round 5 – Tal, Mikhail – 1-0 – Matulovic, Milan – G29 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qh4
1966 Rubinstein Memorial 04th – Round 1 – Filipowicz, Andrzej – 1-0 – Pietrusiak, Bogdan – G6 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qh4
1966 Sochi – Round 12 – Bradvarevic, Aleksandar – 1/2-1/2 – Bertok, Mario Jr. – G38 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1966 Sukhumi – Round 3 – Keres, Paul Petrovich – 1/2-1/2 – Matulovic, Milan – G27 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qh4
1966 Tel Aviv ISR – Round 10 – Domnitz, Zadok – 1/2-1/2 – Peretz, Malkiel – G13 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1966 WchTJ U26 fin-A – Round 9 – Jansa, Vlastimil – 1/2-1/2 – Buchman E – G54 1. e4 c5 2. Nc3 Nc6 3. Nge2 Nf6 4. d4 cxd4 5. Nxd4 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qh4
1967 URS Team Ch – Round 5.2 – Gipslis, Aivars – 1/2-1/2 – Krutikhin, Yury Petrovich – G50 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qb6
1967 YUG Ch 22th – Round 10 – Maric, Rudolf – 1/2-1/2 – Bradvarevic, Aleksandar – G52 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1968 Kecskemet HUN – Round 1 – Bilek, Istvan – 1/2-1/2 – Doda, Zbigniew – G5 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1968 Rubinstein Memorial – Round 7 – Schmidt, Wlodzimierz – 1/2-1/2 – Doda, Zbigniew – G45 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1968 Wijk aan Zee II – Round 1 – Hartoch, Robert G – 1-0 – Vyslouzil, A. – G26 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 O-O
1969 Athene zt – Round 11 – Matulovic, Milan – 1-0 – Kokkoris, Haralambos – G16 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Qf6
1969 Athens zt – Round 5 – Matulovic, Milan – 1/2-1/2 – Siaperas, Triantafyllos – G28 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1969 Netanya – Round 12 – Damjanovic, Marko – 1/2-1/2 – Peretz, Malkiel – G82 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3
1969 POL Ch 26th – Round 3 – Bednarski, Jacek B – 1/2-1/2 – Adamski, Jan – G11 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5
1969 Raach zt – Round 21 – Matanovic, Aleksandar – 1/2-1/2 – Andersson, Ulf 1949 – G177 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5
6. World Blitz 2010 – Round 18.1 – Carlsen, Magnus – 1/2-1/2 – Nepomniachtchi, Ian – G123 1. e4 c5 2. Ne2 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 d4 10. Ne2 e5
GCT Blitz Paris 2021 – Round 13.1 – Kramnik, Vladimir – 1/2-1/2 – Rapport, Richard – G59 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
GCT Rapid Paris 2021 – Round 6.3 – Firouzja, Alireza – 1/2-1/2 – Rapport, Richard – G27 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
Global Chess League 2023 – Round 4.3 – Dominguez Perez, Leinier – 1/2-1/2 – Saini Vidit – G48 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4
Saint Louis Blitz 2019 – Round 2.5 – Caruana, Fabiano – 0-1 – Yu, Yangyi – G10 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 O-O 10. O-O d4
SuperGM 2001 – Round 5 – Shirov, Alexei – 1-0 – Grischuk, Alexander – G10 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 d4 10. Ne2 e5
World Cup 1989 – Round 1 – Ehlvest, Jaan – 1/2-1/2 – Andersson, Ulf 1949 – G26 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 Nxc3

B45s — Taimanov Four Knights

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Ndb5 Bb4 7.a3 Bxc3+ 8.Nxc3 d5

Les coups candidats

9.exd5 — 89.3% (5262 parties)

Ambassadeurs : Van Riemsdijk, Herman C. (37x), Khenkin, Igor (19x), Stein, Bernd (15x), Rogozenco, Dorian (15x), Rosen, Bernd (14x), Vager, Boris (13x), Goncharenko, Georgy (13x), Grobler, David (13x)

9.Bd3 — 9.9% (586 parties)

Ambassadeurs : Astasio Lopez, David (5x), Pilnik, Herman (4x), Moldovan, Daniel (4x), Zawadzka, Jolanta (4x), Cernov, Vadim (4x), Michel, Pascal (3x), Stahlberg, Gideon (3x), Hasangatin, Ramil (3x)

9.Bg5 — 0.6% (36 parties)

Ambassadeurs : Pillsbury, Harry (1x), Blackburne, Joseph (1x), Baird, David (1x), Morris Wambui (1x), Ibrahimoglu, Ismet (1x), Siaperas, Triantafyllos (1x), Karklins, Andrew (1x), Sandrin, Angelo (1x)

9.Bb5 — 0.1% (6 parties)

Ambassadeurs : Fletzer, Gino (1x), Emden, Hermann (1x), Jimenez Rando, Antonio (1x), Baron Isanta, Jose Maria (1x), Mrvova, Alena (1x), Pokorna, Renata (1x), Fongers, Joyce (1x), Andres Gonzalez, Ivan (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.exd5	9.Bd3	9.Bg5	9.Bb5
<1800	173	93%	5%	2%	—
1800-2200	2039	91%	8%	1%	0%
2200-2600	2523	87%	13%	0%	0%
2600+	84	71%	29%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9.exd5	9.Bd3	9.Bg5	9.Bb5
1880s	4	100%	—	—	—
1890s	3	100%	—	—	—
1900s	30	90%	7%	3%	—
1910s	3	67%	—	33%	—
1920s	6	83%	17%	—	—
1930s	8	88%	12%	—	—
1940s	32	81%	19%	—	—
1950s	103	85%	14%	—	1%
1960s	225	95%	4%	1%	—
1970s	181	97%	2%	—	—
1980s	234	97%	2%	—	—
1990s	833	95%	4%	1%	0%
2000s	1861	87%	12%	1%	—
2010s	1683	90%	9%	1%	0%
2020s	686	81%	19%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.exd5	90%	81%	▼ -9.5%
9.Bd3	9%	19%	▲ +10.4%
9.Bg5	1%	0%	▼ -0.8%
9.Bb5	0%	0%	-0.1%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 5 parties
Kramnik, Vladimir — 4 parties
Smyslov, Vladimir — 2 parties
Karpov, Anatoly — 2 parties
Kasparov, Garry — 2 parties
Alekhine, Alexander — 1 partie
Lasker, Emanuel — 1 partie
Anand, Viswanathan — 1 partie
Carlsen, Magnus — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

9.exd5 — 89.3% (5262 parties)

1880 — White, Max vs Minckwitz, Johannes — 1/2-1/2 — Graz AUT
1881 — Schmid, Christoph vs Blackburne, Joseph — 0-1 — Berlin GER
1883 — Caceres Richter, Dylan vs Tarrasch, Siegbert — 0-1 — Halle GER
1885 — Cambridge, Gregory vs Bedlam — 0-1 — cr.
1897 — D Marco, Gianni vs Schiffers, Emanuel — 1/2-1/2 — Berlin GER

9.Bd3 — 9.9% (586 parties)

1900 — Lawrence, Thomas F vs Van Vliet, Lodewijk — 1/2-1/2 — London ENG
1901 — Napier, William vs Karpinski, Louis Charles — 1-0 — Buffalo
1921 — John Wade Wec-Nyin vs Saemisch, Friedrich — 0-1 — Hamburg GER
1939 — Capablanca, Jose vs Tartakower, Savielly — 1/2-1/2 — Buenos Aires ARG
1943 — Michel, Pascal vs Concepcion Villegas, Bryan Uriel — 1/2-1/2 — Mar del Plata ARG

9.Bg5 — 0.6% (36 parties)

1901 — Pillsbury, Harry vs Blackburne, Joseph — 1-0 — Brooklyn/London
1911 — Baird, David vs Morris Wambui — 1/2-1/2 — New York, NY USA
1963 — Friehoff, Heinz vs Konrad Eberhard — 0-1 — Helmbrechts GER
1968 — Ibrahimoglu, Ismet vs Siaperas, Triantafyllos — 1-0 — Lugano olm
1968 — Karklins, Andrew vs Sandrin, Angelo — 1-0 — Greater Chicago op

9.Bb5 — 0.1% (6 parties)

1957 — Fletzer, Gino vs Emden, Hermann — 1/2-1/2 — San Benedetto
1996 — Mrvova, Alena vs Pokorna, Renata — 0-1 — Slovakia
1997 — Jimenez Rando, Antonio vs Baron Isanta, Jose Maria — 1/2-1/2 — Manresa op
1998 — Fongers, Joyce vs Andres Gonzalez, Ivan — 1/2-1/2 — San Agustin
2016 — Sandor, Tamas vs Orso, Miklos — 1/2-1/2 — Miercurea Ciuc

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