B71e - 6…Bg7 7.e5 - Dragon, Levenfish (1939)

B71e — Sicilian: Dragon, Levenfish, 6…Bg7 7.e5

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4 Bg7 7.e5 *   ● Trait aux Noirs

Ouverture — Tension centrale

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bN
bB
bQ
bK
bR
bP
bP
bP
bP
bB
bP
bP
bN
bP
Case forte (3v0)
wPPion central
wN
wP
wN
wP
wP
wP
wP
wP
wR
wB
wQ
wK
wBFou actif — mobilité 5
wR
abcdefgh
Plans. Bb5+ (Fou actif (mobilité 9), Développer f1 — 28 % des parties) ; e6 (Rupture — 3 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wB
wK
wQ
wB
wR
wP
wP
wP
wP
wP
wN
Case forte (2v1)
wP
wN
Avant-poste F (accessible)
wP
bP
bN
bP
bP
bB
bP
bP
bP
bP
bR
bK
bQ
bBFou actif — mobilité 5
bN
bR
hgfedcba
Plans. ...dxe5 (Capture en e5, Occuper le centre — 67 % des parties) ; ...Nh5 (20 % des parties).
Avantages
Faiblesses
Diagonale active
Plans

Structure de pions
♔ Blancs ♚ Noirs
Pions doublés — —
Pions isolés — —
Arriérés — —
Chaînes ● f4→e5 ● e7→d6, f7→g6, h7→g6
Passés — —
Majorité ● aile dame 3v2 —
Cases
♔ Blancs ♚ Noirs
Cases fortes ● b5 (3v0) ● g4 (2v1), ● f5 (2v1)
Cases faibles — —
Centre ● d4 (1v0) —
Colonnes et diagonales
♔ Blancs ♚ Noirs
Semi-ouvertes ● d ● c
Pièces
♔ Blancs ♚ Noirs
Bc1 ● Bc1 Non développé (mob. 2)
Bf1 ● Bf1 Non développé (mob. 5)
Bg7 ● Bg7 Ok (mob. 2)
Bc8 ● Bc8 Non développé (mob. 5)
Paire de fous ● Oui ● Oui
Non développées 4 (● c1, ● f1, ● a1, ● h1) 4 (● b8, ● 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 ● e5-e6, ● f4-f5 —
Partie
1939 Leningrad ch-URS – Round 9 – Levenfish, Grigory – 1-0 – Rabinovich, Ilya Mar – G73
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 Ng4 8. Bb5+ Kf8 9. h3 Nh6 10. Be3 Nc6
1946 Buenos Aires ch-ARG – Round 1 – Alvarez Martin, Pedro – 1-0 – Bahamonde Corral, Alejandro – G33
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 dxe5 8. fxe5 Ng4 9. Bb5+ Nc6 10. Nxc6 Qxd1+
1947 ARG-ch26 Mayor – Round 15 – Beretta, Hector – 0-1 – Rossetto, Hector – G11
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 Ng4 8. Bb5+ Kf8 9. Be2 h5 10. h3 Nh6
1948 New York – Round 2 – Pilnik, Herman – 1-0 – Kashdan, Isaac – G16
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 dxe5 8. fxe5 Ng4 9. Bb5+ Nc6 10. Nxc6 Qxd1+
1961 Minet Shield – Round 2.1 – Smith, Derek H – 1-0 – Collins, Richard Arnold – G3
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 dxe5 8. fxe5 Nd5 9. Bb5+ Kf8 10. Bc4 e6
1961 Skittles – Round ? – Blackstone, John – 1-0 – Mueller, E.H. – G4
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 dxe5 8. fxe5 Nfd7 9. e6 Ne5 10. Bb5+ Kf8
1962 Sweden – Round 1 – Buskenstrom, Sven – 1-0 – Nilsson, Zandor – G15
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 Nh5 8. Bb5+ Bd7 9. e6 Bxb5 10. exf7+ Kxf7
1963 Dravograd – Round 1 – Ostojic, Predrag – 1/2-1/2 – Zagar, Dane – G2
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 dxe5 8. fxe5 Nfd7 9. e6 Ne5 10. Bb5+ Kf8
1964 Magdeburg – Round 8 – Muehlberg, Siegfried – 1/2-1/2 – Liebert, Heinz – G31
1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 g6 6. f4 Bg7 7. e5 Nh5 8. Bb5+ Bd7 9. e6 fxe6 10. Nxe6 Bxc3+
1968 URS Team Ch – Round ? – Shianovsky, Vladislav I – 1-0 – Rumiancev, Boris – G5
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 dxe5 8. fxe5 Nd5 9. Bb5+ Kf8 10. O-O Bxe5

B71e — Dragon, Levenfish (1939)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4 Bg7 7.e5
Les coups candidats
7…dxe5 — 67.4% (516 parties)
Ambassadeurs : ? (5x), Mega R (4x), Kiss, Judit (4x), Collins, Richard (3x), Rabello, David Sousa (3x), Zsiltzova-Lisenko, Lubov (3x), White, Henry (2x), Crotto, Rachel (2x)
7…Nh5 — 20.2% (155 parties)
Ambassadeurs : Mestel, A Jonathan (6x), Praszak, Michal (4x), Lederman, Leon (3x), Wallinger, Manfred (2x), Barnett, Douglas J (2x), Ernst, Thomas (2x), Beckemeyer, Werner (2x), Littlewood, John E (2x)
7…Ng8 — 4.0% (31 parties)
Ambassadeurs : Dinsen, Carl Krarup (1x), Nielsen, Gunnar (1x), Rellstab, Ludwig (1x), Wittenberg, Helmut (1x), Soelter, Reinhold (1x), Flatau, Leo (1x), Emden, Hermann (1x), Staldi, Cherubino (1x)
7…Ng4 — 3.4% (26 parties)
Ambassadeurs : Franzen, Jozef (1x), Kijac, Miroslav (1x), Niemers, Johannes (1x), Mohaupt, Sascha (1x), Buenermann, Volker (1x), Raddatz, Michael (1x), Kosmac, Blaz (1x), Adam, Miroslav (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…dxe5 7…Nh5 7…Ng8 7…Ng4
<1800 104 86% 5% 3% 4%
1800-2200 371 68% 19% 5% 4%
2200-2600 96 23% 54% 3% 7%
2600+ 1 — 100% — —
Évolution par décennie (% des parties)
Décennie N parties 7…dxe5 7…Nh5 7…Ng8 7…Ng4
1950s 10 50% 10% 40% —
1960s 20 85% 15% — —
1970s 34 56% 32% 3% —
1980s 40 45% 45% 2% 2%
1990s 166 66% 19% 4% 4%
2000s 252 75% 17% 2% 3%
2010s 213 64% 19% 6% 5%
2020s 31 71% 19% 6% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…dxe5 64% 71% ▲ +7.1%
7…Nh5 19% 19% +0.1%
7…Ng8 6% 6% +0.3%
7…Ng4 5% 0% ▼ -5.2%
Parties historiques
7…dxe5 — 67.4% (516 parties)
1950 — Shapiro, Leon vs Somov, Vladimir — 1-0 — Leningrad RUS
1951 — Crisovan vs Rey, Hans — 1-0 — Switzerland
1954 — Matsukevich, Anatoly vs Shlafirner — 1-0 — Razan
1956 — Grogan, Richard vs Schneider, Lars-Ake — 1/2-1/2 — Moskou olm
1958 — Phillips, J Rodney vs Leonhardt, Wolfgang — 1-0 — Sydney AUS
7…Nh5 — 20.2% (155 parties)
1954 — Kolvig, Bent vs Auchenberg, E. — 1-0 — Hillerod
1962 — Buskenstrom, Sven vs Nilsson, Zandor — 1-0 — Sweden
1963 — Athayde, Mauro de vs ? — 1-0 — Recife
1964 — Muehlberg, Siegfried vs Liebert, Heinz — 1/2-1/2 — Magdeburg GER
1974 — Vladimirov, Yevgeniy vs Mestel, A Jonathan — 0-1 — Pont Sainte Maxence
7…Ng8 — 4.0% (31 parties)
1950 — Rellstab, Ludwig vs Wittenberg, Helmut — 1-0 — Hamburg GER
1951 — Emden, Hermann vs Staldi, Cherubino — 1/2-1/2 — Venice ITA
1955 — Dinsen, Carl Krarup vs Nielsen, Gunnar — 1-0 — Denmark ch corr
1957 — Soelter, Reinhold vs Flatau, Leo — 1-0 — Brakel
1971 — Biriescu, Ioan vs Scheichel, Herbert — 1/2-1/2 — Groningen NED
7…Ng4 — 3.4% (26 parties)
1986 — Franzen, Jozef vs Kijac, Miroslav — 1-0 — SVK-ch Bratislava SVK
1993 — Buenermann, Volker vs Raddatz, Michael — 1-0 — Wichern op Hamburg GER
1996 — Lehtinen, Jouko vs Prezkop, Michael F — 1-0 — corr IECG Cat-F
1997 — Niemers, Johannes vs Mohaupt, Sascha — 1/2-1/2 — Leverkusen open
1997 — Kosmac, Blaz vs Adam, Miroslav — 1-0 — SLO-ch Krsko