B45 — Sicilian Defense: Four Knights Variation, American Attack
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bb4 7. Nd6+ ● Trait aux Noirs
Ouverture — Centre mobile
♔ Point de vue Blancs
8
7
6
5
4
3
2
1
abcdefgh
Plans. Nxc8+ (Capture en c8 — 52 % des parties) ; Bf4 (Fou actif (mobilité 7), Développer c1 — 38 % des parties).
♚ Point de vue Noirs
1
2
3
4
5
6
7
8
hgfedcba
Plans. ...Ke7 (94 % des parties) ; ...Bxd6 (Fou actif (mobilité 11) — 4 % des parties).
Avantages
Faiblesses
Diagonale active
Plans
Base Masters : Blancs 27.6%, Nulles 44.8%, Noirs 27.6%.
Coups candidats
7…Ke7 (100.0% — Blancs: 27.6% | Nulles: 44.8% | Noirs: 27.6%)
auto
Analyse coup par coup — 13 demi-coups commentés
1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3.
1…c5 Avancée centrale — contrôle b4, d4. Prépare Nc6, d5.
2.Nf3 Contrôle c4, d4, d5, e5.
2…e6 Avancée centrale — contrôle d5, f5. Prépare d5, Be7, Bd6.
3.d4 Avancée centrale — contrôle c5, e5. Prépare c4, e4, Nc3.
3…cxd4 Capture en d4 — résout la tension centrale.
4.Nxd4 Capture pion en d4.
4…Nc6 Contrôle d4, c5, d5, e5.
5.Nc3 Contrôle c4, f4, d5, f5.
5…Nf6 Contrôle d4, e4, c5, d5.
6.Ndb5 Contrôle c4, f4, d5, f5.
6…Bb4 Contrôle d4, e4, c5, d5.
7.Nd6+ Contrôle c4, d4, f4, d5. Échec !
1…c5 Avancée centrale — contrôle b4, d4. Prépare Nc6, d5.
2.Nf3 Contrôle c4, d4, d5, e5.
2…e6 Avancée centrale — contrôle d5, f5. Prépare d5, Be7, Bd6.
3.d4 Avancée centrale — contrôle c5, e5. Prépare c4, e4, Nc3.
3…cxd4 Capture en d4 — résout la tension centrale.
4.Nxd4 Capture pion en d4.
4…Nc6 Contrôle d4, c5, d5, e5.
5.Nc3 Contrôle c4, f4, d5, f5.
5…Nf6 Contrôle d4, e4, c5, d5.
6.Ndb5 Contrôle c4, f4, d5, f5.
6…Bb4 Contrôle d4, e4, c5, d5.
7.Nd6+ Contrôle c4, d4, f4, d5. Échec !
Structure de pions
| ♔ Blancs | ♚ Noirs | |
| Pions doublés | — | — |
| Pions isolés | — | — |
| Arriérés | — | — |
| Chaînes | — | ● d7→e6, f7→e6 |
| Passés | — | — |
| Majorité | ● aile dame 3v2 | — |
Cases
| ♔ Blancs | ♚ Noirs | |
| Cases fortes | ● c4 (2v0), ● b5 (3v0) | — |
| Cases faibles | — | — |
| Centre | ● d5 (3v2), ● 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) | |
| Bb4 | ● Bb4 Actif (mob. 5) | |
| Bc8 | ● Bc8 Non développé (mob. 0) | |
| Paire de fous | ● Oui | ● Oui |
| Clouages | ● knight c3 | — |
| 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 | mobile |
| Partie |
|---|
| 1900 London – Round 7 – Mason, James – 1-0 – Blackburne, Joseph – G19 1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Nxc8+ Rxc8 9. Bd2 d5 10. exd5 Nxd5 |
| 1900 Paris+ – Round 17.1 – Mason, James – 1/2-1/2 – Mieses, Jacques – G20 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Nxc8+ Rxc8 9. Bd2 Bxc3 10. Bxc3 Nxe4 |
| 1902 It (Men) Monte Carlo MNC – Round 7 – Popiel, Ignacy – 0-1 – Marchand, Max – G24 1. e4 c5 2. Nc3 e6 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Bf4 e5 9. Nf5+ Kf8 10. Bg5 d5 |
| 1926 Vienna – Round 2 – Wolf, Siegfried – 1-0 – Lokvenc, Josef – G9 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Bf4 Qa5 9. Be2 Bxc3+ 10. bxc3 Qxc3+ |
| 1946 Hungary – Round 1 – Florian, Tibor – 1-0 – Sooky, Ladislav – G21 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Bf4 e5 9. Nf5+ Kf8 10. Bg5 d5 |
| 1947 Chigorin Memorial – Round 1 – Keres, Paul Petrovich – 1/2-1/2 – Trifunovic, Petar – G56 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Nxc8+ Rxc8 9. Bd3 d5 10. exd5 Qxd5 |
| 1956 New York Rosenwald – Round ? – Fischer, Robert J – 1/2-1/2 – Pavey, Max – G34 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Nxc8+ Rxc8 9. Bd3 d5 10. exd5 Qxd5 |
| 1957 WchT U26 04th – Round 7.3 – Saidy, Anthony – 1-0 – Sehlstedt, Berndt – G96 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Nxc8+ Rxc8 9. Bd3 Re8 10. Bd2 Kf8 |
| 1961 Chigorin Memorial – Round 1 – Damjanovic, Mato – 0-1 – Zaitsev, Alexander – G2 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Nxc8+ Rxc8 9. Bd3 Re8 10. Bd2 Kf8 |
| 1962 Erevan ch-URS – Round 1 – Mnatsakanian, Eduard A – 1-0 – Zaitsev, Alexander – G119 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Bf4 e5 9. Nxc8+ Rxc8 10. Bg5 Qa5 |
| 1963 Pan American Ch – Round 3 – Haro Garcia, Gilberto – 1-0 – Lopez Mario D – G11 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Bf4 Qa5 9. f3 Bxc3+ 10. bxc3 Qxc3+ |
| 1965 Corr – Round 1 – Schurawlew – 1/2-1/2 – Blom, Kaj – G18 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Nxc8+ Rxc8 9. Bd3 d5 10. exd5 Nxd5 |
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- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1900 London – Round 7 – Mason, James – 1-0 – Blackburne, Joseph – G19
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1900 Paris+ – Round 17.1 – Mason, James – 1/2-1/2 – Mieses, Jacques – G20
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1902 It (Men) Monte Carlo MNC – Round 7 – Popiel, Ignacy – 0-1 – Marchand, Max – G24
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1926 Vienna – Round 2 – Wolf, Siegfried – 1-0 – Lokvenc, Josef – G9
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1946 Hungary – Round 1 – Florian, Tibor – 1-0 – Sooky, Ladislav – G21
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1947 Chigorin Memorial – Round 1 – Keres, Paul Petrovich – 1/2-1/2 – Trifunovic, Petar – G56
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1956 New York Rosenwald – Round ? – Fischer, Robert J – 1/2-1/2 – Pavey, Max – G34
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1957 WchT U26 04th – Round 7.3 – Saidy, Anthony – 1-0 – Sehlstedt, Berndt – G96
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1961 Chigorin Memorial – Round 1 – Damjanovic, Mato – 0-1 – Zaitsev, Alexander – G2
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1962 Erevan ch-URS – Round 1 – Mnatsakanian, Eduard A – 1-0 – Zaitsev, Alexander – G119
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1963 Pan American Ch – Round 3 – Haro Garcia, Gilberto – 1-0 – Lopez Mario D – G11
- Lire la suite
-
- B20-B99 1. e4 c5 - Sicilian Defense, B40-B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B45 - 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 - Sicilian Defense: Taimanov Variation, B45q - 5…Nf6 6.Ndb5 Bb4 7.Nd6+ - Four Knights Variation, American Attack (1900), SÉRIE B 1.e4 2....
1965 Corr – Round 1 – Schurawlew – 1/2-1/2 – Blom, Kaj – G18
- Lire la suite













1956 — Tumurbator, Purev vs Muehring, Willem — 1/2-1/2 — ?
1957 — Gumprich, Kurt vs Eisinger, Max Jr — 0-1 — FRG-ch Bad Neuenahr
1957 — Saidy, Anthony vs Sehlstedt, Berndt — 1-0 — Reykjavik ISL
1957 — Fischer, Robert J vs Baev, Pavel — 1/2-1/2 — New York, NY USA
1975 — Jobe, Tom B vs Koski, Mark — 1-0 — ?
1982 — Moody, David W vs Grunlach, Eouglas — 1-0 — Saginaw, Mich.
1990 — Chidi, Lovina Sylvia vs Disselhorst, James R — 1-0 — corr USA
1991 — Therrien, Michel vs Lecouffe, Vincent — 1-0 — Montreal CAN
1991 — Schoebel, Frank vs Orth, Roman — 1-0 — Bochum GER
1991 — Del Rosario, Frisco vs Feldman, Alexander — 1/2-1/2 — USA-op Los Angeles
1996 — Lange, Andreas vs Orth, Roman — 1-0 — VK3
1997 — Wojciechowski, Paul vs Duggan, Michael F G — 1/2-1/2 — St Heliers Jersey op