E31l - 9.Qc2 - Leningrad, Main Line (1952)

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E31l — Leningrad, Main Line (1952)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6 7.e3 Bxc3+ 8.bxc3 e5 9.Qc2
Les coups candidats
9…Qe7 — 50.0% (203 parties)
Ambassadeurs : Zylla, Johannes (12x), Gaertner, Guntram (5x), Reinke, Kurt (3x), Eriksson, Johan (3x), Glavas, Dragan (3x), Grego, Luís José Gonzaga (3x), Nikitin, Aleksander S (2x), Spassky, Boris Vasily (2x)
9…Nbd7 — 29.6% (120 parties)
Ambassadeurs : Macdonald-Ross, Michael (4x), Keres, Paul (2x), O'Kelly de Galway, Alberic (2x), Stinson, Marcus (2x), Peralta, Fernando (2x), Kretov, Alexey E (2x), Van Seters, Frits (1x), Lazarev, Efim M. (1x)
9…g5 — 12.3% (50 parties)
Ambassadeurs : Ivelinov, Hristo (3x), Prohaszka, Peter (2x), Benko, Pal (1x), Lengyel, Levente (1x), Kliukin, Boris P (1x), Shalnev, Nikolai (1x), Marovic, Drazen (1x), Ree, Hans (1x)
9…O-O — 7.4% (30 parties)
Ambassadeurs : Zylla, Johannes (4x), Bindrich, Oswald (1x), Sheth, Ramesh (1x), Ghitescu, Theodor (1x), Kozma, Julius (1x), Korsakov, Boris (1x), Lazarev, Gennady (1x), Korsakov, Aleksandr (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Qe7 9…Nbd7 9…g5 9…O-O
<1800 10 70% 10% 20% —
1800-2200 128 44% 32% 16% 8%
2200-2600 190 52% 31% 11% 5%
2600+ 8 88% 12% — —
Évolution par décennie (% des parties)
Décennie N parties 9…Qe7 9…Nbd7 9…g5 9…O-O
1950s 12 42% 25% 8% 25%
1960s 18 39% 44% 11% 6%
1970s 18 17% 67% 17% —
1980s 28 64% 21% 4% 11%
1990s 86 51% 29% 14% 5%
2000s 111 57% 31% 5% 6%
2010s 110 50% 24% 17% 9%
2020s 23 35% 26% 26% 9%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Qe7 50% 35% ▼ -15.2%
9…Nbd7 24% 26% ▲ +2.5%
9…g5 17% 26% ▲ +8.8%
9…O-O 9% 9% -0.4%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 1 partie
Parties historiques
9…Qe7 — 50.0% (203 parties)
1955 — Alexander Tadala vs Abanin, Vladimir — 0-1 — Moscow RUS
1957 — Spassky, Boris Vasily vs Kholmov, Ratmir D — 1/2-1/2 — Moscow RUS
1957 — Cherepkov, Alexander V vs Nikitin, Aleksander S — 1/2-1/2 — Leningrad RUS
1959 — Vyslouzil, Antonin vs Nikitin, Aleksander S — 0-1 — ?
1959 — Penrose, Jonathan vs Kostro, Jerzy — 1-0 — Budapest HUN
9…Nbd7 — 29.6% (120 parties)
1952 — Keres, Paul vs O'Kelly de Galway, Alberic — 1/2-1/2 — Budapest HUN
1952 — Keres, Paul vs O'Kelly, Albéric de Galway — 1-0 — Budapest HUN
1956 — Van Seters, Frits vs O'Kelly de Galway, Alberic — 1/2-1/2 — Brussels BEL
1960 — Lazarev, Efim M. vs Zimin, Yuri A — 0-1 — ?
1960 — Beyen, Roland vs Kolarov, Atanas S. — 0-1 — Leningrad RUS
9…g5 — 12.3% (50 parties)
1957 — Benko, Pal vs Lengyel, Levente — 1-0 — HUN-ch Budapest HUN
1968 — Marovic, Drazen vs Ree, Hans — 0-1 — Amsterdam NED
1969 — Kliukin, Boris P vs Shalnev, Nikolai — 1-0 — ?
1971 — Middelkoop, Arno vs Ligterink, Gert — 0-1 — Nederland tt
1975 — Reichenbach, Werner vs Parma, Bruno — 0-1 — Mannheim GER
9…O-O — 7.4% (30 parties)
1957 — Ghitescu, Theodor vs Kozma, Julius — 0-1 — Bratislava Bratislava SVK
1957 — Korsakov, Boris vs Lazarev, Gennady — 1-0 — Kiev UKR
1957 — Korsakov, Aleksandr vs Lasarev, Alexander — 1-0 — Ukraine ch
1969 — Bindrich, Oswald vs Sheth, Ramesh — 0-1 — Leipzig GER
1983 — Bourgoin, Denis vs Bouttier, Pierre — 0-1 — ?