B56d — Sicilian: Open, 2…d6, 5.Nc3 Nbd7
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nbd7 * ○ Trait aux Blancs
Ouverture — Centre semi-ouvert
♔ Point de vue Blancs
8
7
6
5
4
3
2
1
abcdefgh
Avantages : majorité aile_dame (3v2), case forte b5, case forte d5, case forte f5, paire de fous, colonne d.
Faiblesses adverses : Bc8 enfermé, Bf8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 4 pièces non développées (C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Bg5 — Clouer Nf6
● Bd3 — Développer Bf1
● Rd — Tour sur colonne d
Faiblesses adverses : Bc8 enfermé, Bf8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 4 pièces non développées (C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Bg5 — Clouer Nf6
● Bd3 — Développer Bf1
● Rd — Tour sur colonne d
♚ Point de vue Noirs
1
2
3
4
5
6
7
8
hgfedcba
Avantages : majorité centre (2v1), case forte c5, case forte e5, avant-postes c5(C), e5(C), paire de fous, colonne c.
Faiblesses adverses : Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, Bf8 enfermé, 4 pièces non développées (C8, F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Bf5 — Développer Bc8
● ...Bb4 — Développer Bf8
● ...d5 — Rupture
● ...e6 — Rupture
Faiblesses adverses : Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, Bf8 enfermé, 4 pièces non développées (C8, F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Bf5 — Développer Bc8
● ...Bb4 — Développer Bf8
● ...d5 — Rupture
● ...e6 — Rupture
Avantages
Faiblesses adverses
Diagonale active
Plans
Structure de pions
| ♔ Blancs | ♚ Noirs | |
| Pions doublés | — | — |
| Pions isolés | — | — |
| Arriérés | — | — |
| Chaînes | — | ● e7→d6 |
| Passés | — | — |
| Majorité | ● aile_dame 3v2 | ● centre 2v1 |
Cases
| ♔ Blancs | ♚ Noirs | |
| Cases fortes | ● b5 (3v0), ● d5 (2v1), ● f5 (2v0) | ● c5 (2v0), ● e5 (2v0) |
| Cases faibles | — | — |
| Centre | ● d4 (1v0), ● d5 (2v1) | ● e5 (2v0) |
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. 0) | |
| Bf8 | ● Bf8 Non développé (mob. 0) | |
| Paire de fous | ● Oui | ● Oui |
| Non développées | 4 (c1, f1, a1, h1) | 4 (c8, f8, 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 | semi-ouvert | |
| Ruptures | ● e4-e5, ● f2-f3 | ● …d6-d5, ● …e7-e6, ● …e7-e5 |
| Partie |
|---|
| 1950 Southsea – Round 3 – Penrose, Justin – 1-0 – Bogoljubow, Efim – G15 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 a6 7. Bg2 e6 8. O-O Be7 9. b3 Qc7 10. Bb2 O-O |
| 1957 Rio de Janeiro zt – Round 1 – Humerez, C. – 1/2-1/2 – Mangini, Jose Henrique de Mello – G6 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. h3 a6 10. Kh2 Nc5 |
| 1961 Moscow Ch – Round ? – Shamkovich, Leonid – 1-0 – Ignatiev, Felix N – G67 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Bg5 h6 7. Bh4 a6 8. Bc4 Nb6 9. Bb3 e5 10. Nf5 Bxf5 |
| 1962 Olympiad Varna BUL – Round 1 – Corral Blanco, Juan Antonio – 0-1 – Petrosian, Tigran V – G9 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. Bc4 g6 8. f3 b5 9. Bb3 Bb7 10. Qd2 Nc5 |
| 1964 CSR Ch – Round 10 – Seifert, Milan – 1/2-1/2 – Smejkal, Jan – G74 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. f3 e6 8. Qd2 Qc7 9. O-O-O b5 10. Bxb5 axb5 |
| 1964 Tel Aviv olm prel – Round 6 – O'Hare, Eugene – 0-1 – Bilek, Istvan – G227 1. e4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 Nbd7 6. Be2 g6 7. O-O Bg7 8. Be3 O-O 9. Qd2 a6 10. a4 Nc5 |
| 1964 WchT U26 11. fin-A – Round 9.4 – Polgar, Istvan – 1/2-1/2 – Smejkal, Jan – G162 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. Nb3 e6 8. f4 b5 9. Bd3 Bb7 10. Qf3 Qc7 |
| 1965 Belgrade – Round 1 – Milicevic, Miodrag – 1-0 – Dely, Peter – G4 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be2 Nc5 7. f3 a6 8. Be3 e5 9. Nb3 Be6 10. O-O Be7 |
| 1965 Capablanca Memorial – Round 18 – Ciocaltea, Victor – 0-1 – Bilek, Istvan – G184 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. Bc4 e6 8. Bb3 Nc5 9. f3 Be7 10. Qd2 Qc7 |
| 1965 Capablanca Memorial – Round 20 – Robatsch, Karl – 1-0 – Szabo, Ladislav – G203 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 g6 7. Bg2 Bg7 8. O-O a6 9. Re1 O-O 10. h3 e5 |
| 1965 CSR Ch – Round 6 – Hora, Vratislav – 0-1 – Alster, Ladislav – G3 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 a6 7. Bg2 Qc7 8. O-O g6 9. Be3 Bg7 10. Kh1 O-O |
| 1965 Hungary – Round 1 – Barczay, Laszlo – 0-1 – Bilek, Istvan – G75 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. Nd5 e6 10. Nc3 a6 |
| 1965 Hungary – Round 1 – Foldi, Jozsef – 1/2-1/2 – Bilek, Istvan – G74 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. Be2 Nc5 8. f3 e6 9. Qd2 Qc7 10. Nb3 b6 |
| 1965 Pardubice – Round 1 – Hora, Vratislav – 0-1 – Alster, Ladislav – G12 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 a6 7. Bg2 Qc7 8. O-O g6 9. Be3 Bg7 10. Kh1 O-O |
| 1966 Asztalos Memorial 9th – Round 3 – Paoli, Enrico – 0-1 – Bilek, Istvan – G14 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. Be2 g6 8. Qd2 b5 9. f3 Bb7 10. Nb3 Bg7 |
| 1966 Asztalos Memorial 9th – Round 6 – Paoli, Enrico – 0-1 – Ciocaltea, Victor – G31 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. Bc4 e6 8. O-O Nc5 9. f3 Qc7 10. Bb3 Be7 |
| 1966 Buenos Aires ch-ARG – Round 1 – Acevedo Garcia, Hilda – 0-1 – Pelikan, Anna – G5 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 a6 7. Bg2 e6 8. O-O Be7 9. b3 Qc7 10. Bb2 Rb8 |
| 1966 Buenos Aires ch-ARG – Round 1 – Bazan, Osvaldo – 0-1 – Pelikan, Anna – G4 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. f4 Nc5 8. Bd3 e5 9. Nf3 exf4 10. Bxf4 Be7 |
| 1966 CSR Ch Int 1st – Round 6 – Jimenez Zerquera, Eleazar – 0-1 – Bilek, Istvan – G33 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be2 g6 7. O-O Bg7 8. Be3 O-O 9. f4 a6 10. Nb3 b5 |
| 1966 Den Haag zt – Round 14 – Durão, Joaquim Manuel – 0-1 – Bilek, Istvan – G77 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. f3 e6 8. Bd3 Be7 9. O-O Qc7 10. Qe1 b5 |
| 1966 Hungary – Round 1 – Besztercsenyi, Tibor – 0-1 – Barcza, Gedeon – G54 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be2 Nc5 7. Bf3 e6 8. O-O Be7 9. Qe2 a6 10. Rd1 Qc7 |
| 1966 Hungary – Round 1 – Pogats, Jozsef Jr. – 1/2-1/2 – Haag, Ervin – G15 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. b3 a6 10. Bb2 e5 |
| 1966 Kislovodsk – Round 9 – Fuchs, Reinhart – 0-1 – Taimanov, Mark E – G51 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. Re1 a6 10. h3 e5 |
| 1966 La Habana olm fin-A – Round 13 – Minev, Nikolay N – 0-1 – Petrosian, Tigran V – G245 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 e6 7. Bg2 a6 8. O-O Be7 9. b3 O-O 10. Bb2 Rb8 |
| 1966 La Habana olm fin-A – Round 4 – Pietzsch, Wolfgang – 1/2-1/2 – Hort, Vlastimil – G11 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 e6 7. Bg2 Be7 8. O-O O-O 9. f4 Nc5 10. f5 Bd7 |
| 1966 La Habana olm prel – Round 5 – Cornelis, Frans B – 0-1 – Szabo, Laszlo – G190 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Bg5 h6 7. Bh4 g6 8. Be2 Bg7 9. f4 a6 10. O-O O-O |
| 1966 Parcetic Memorial 2nd – Round 7 – Karaklajic, Nikola – 1-0 – Malich, Burkhard, Dr. – G30 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Bd3 g6 7. O-O Bg7 8. Be3 O-O 9. h3 Nc5 10. Qd2 a6 |
| 1966 URS Team Ch – Round 1 – Murey, Jacob – 0-1 – Taimanov, Mark E – G40 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Bg5 g6 7. Qd2 h6 8. Bh4 Bg7 9. O-O-O a6 10. Bc4 O-O |
| 1967 ROM Ch – Round 19 – Drimer, Dolfi – 0-1 – Ghitescu, Theodor – G132 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. f4 e6 7. Be2 a6 8. Bf3 Qc7 9. O-O Be7 10. Kh1 Nb6 |
| 1967 Salgotarjan – Round 1 – Damjanovic, Marko – 1/2-1/2 – Szabo, Ladislav – G1 1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 Nbd7 6. Be3 a6 7. f3 d5 8. Nxd5 Nxd5 9. exd5 Qa5+ 10. Qd2 Qxd5 |
| 1967 Sofia tt – Round 6 – Petrovikis, Dimosthenis – 0-1 – Ciocaltea, Victor – G93 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Nb3 a6 7. a4 b6 8. g3 Bb7 9. Bg2 e6 10. Qe2 Be7 |
| 1967 Sousse Interzonal – Round 17 – Mecking, Henrique – 1/2-1/2 – Hort, Vlastimil – G156 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 Nc5 7. f3 Bd7 8. Qd2 a6 9. Nb3 Nxb3 10. axb3 e6 |
| 1967 YUG Ch 22th – Round 5 – Matanovic, Aleksandar – 1/2-1/2 – Bogdanovic, Rajko – G23 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be2 Nc5 7. f3 a6 8. Be3 e5 9. Nb3 Be6 10. O-O Nxb3 |
| 1968 CSR Ch – Round 14 – Hlousek, Zdenek – 1/2-1/2 – Dolezal, Jiri – G126 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Bg5 g6 7. Bc4 Bg7 8. f3 Qa5 9. Be3 O-O 10. Qd2 Ne5 |
| 1968 DDR Ch women – Round 5 – Nuenchert, Eveline – 1/2-1/2 – Nowarra, Waltraud – G5 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. Be2 Nc5 8. f3 e5 9. Nb3 Be6 10. O-O Be7 |
| 1968 Hoogovens – Round 1 – Crabbendam, Hans – 1-0 – Ciocaltea, Victor – G16 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. a4 Nc5 8. f3 e6 9. g4 h6 10. Bg2 e5 |
| 1968 Lugano – Round 1 – Salameh, Charles – 0-1 – Ciocaltea, Victor – G10 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be2 Nc5 7. f3 e6 8. Be3 a6 9. a4 Qc7 10. Bd3 Be7 |
| 1968 Skopje/Ohrid – Round 5 – Ilievski, Borce – 0-1 – Hort, Vlastimil – G43 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 Nc5 7. f3 Bd7 8. g4 h6 9. Qd2 a6 10. Nb3 Nxb3 |
| 1968 SWE Ch – Round 14 – Olsson, Ake – 1/2-1/2 – Johansson, Martin 1979 – G61 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. b3 a6 10. Bb2 Nc5 |
| 2026 Tata Steel Chess Masters - Round 2.7 - Erdogmus, Yagiz Kaan - 1/2-1/2 - Aravindh, Chithambaram VR. - G14 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. g4 h6 7. h4 a6 8. Rg1 Nc5 9. Qe2 g6 10. g5 hxg5 |
| 2026 Tata Steel India Blitz - Round 9.2 - Niemann, Hans Moke - 1-0 - Aravindh, Chithambaram VR. - G42 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. f3 h5 8. Qd2 e6 9. O-O-O b5 10. a3 Bb7 |
| Bugojno 1978 – Round 11 – Byrne, Ray – 1/2-1/2 – Larsen, Bent – G61 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 Nbd7 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. b3 Ne5 10. Bb2 Bg4 |
| Hastings8899 1988 – Round 1 – Chandler, Murray G – 1/2-1/2 – Larsen, Bent – G13 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nbd7 6. Be3 a6 7. g4 Nc5 8. f3 e5 9. Nb3 Be6 10. g5 Nh5 |
| Interpolis 1978 – Round 2 – Timman, Jan H – 1-0 – Larsen, Bent – G9 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 Nbd7 6. Be2 Nc5 7. f3 g6 8. Be3 Bg7 9. Qd2 Bd7 10. g4 Na4 |


Smyslov, Vladimir — 1 partie
1964 — Polgar, Istvan vs Smejkal, Jan — 1/2-1/2 — Krakow POL
1964 — Seifert, Milan vs Smejkal, Jan — 1/2-1/2 — Brno CZE
1965 — Foldi, Jozsef vs Bilek, Istvan — 1/2-1/2 — Budapest HUN
1965 — Ciocaltea, Victor vs Bilek, Istvan — 0-1 — Havana CUB
1957 — Milic, Borislav vs Petrosian, Tigran A. — 1/2-1/2 — Leningrad RUS
1960 — Camara, Helder vs Mendes, Silvio Luiz Teixeira — 0-1 — Fortaleza BRA
1960 — Osbun, Erik vs Capps, Carroll — 1-0 — San Francisco, CA USA
1961 — Matanovic, Aleksandar vs Perez Perez, Francisco Jose — 1-0 — Zevenaar
1961 — Shamkovich, Leonid vs Ignatiev, Felix N — 1-0 — Moscow RUS
1961 — Pimentel, Frederico Guilherme vs Mendes, Silvio Luiz Teixeira — 1/2-1/2 — Vitoria
1961 — Calvo Minguez, Ricardo vs Kuyindzhi, Alexander A — 1/2-1/2 — The Hague NED
1963 — Pavlov, Mircea-Sergiu-Aurelian vs Troianescu, Octav — 1-0 — Bucharest ROU
1940 — Bluemich, Max vs Bogoljubow, Efim — 0-1 — Krakow/Krynica/Warsaw
1964 — O'Hare, Eugene vs Bilek, Istvan — 0-1 — Tel Aviv ISR
1964 — Siveri, Armando vs Bilek, Istvan — 0-1 — Reggio Emilia ITA
1964 — Zuidema, Coen vs Bilek, Istvan — 1/2-1/2 — Tel Aviv olm