E49a - 7…* - Normal Variation, Botvinnik System (1923)

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E49a — Botvinnik System
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 Bxc3+ 7.bxc3
Les coups candidats
Ambassadeurs : Milov, Vadim (26x), Levitt, Jonathan P (14x), Sarana, Alexey (13x), Gulko, Boris (10x), Kozak, Adam (10x), Hoi, Carsten (9x), Grebnev, Aleksey (9x), Tudor, Henry Edward (9x)
Ambassadeurs : Jelen, Igor (6x), Milov, Vadim (4x), Gerzhoy, Leonid (4x), Steiner, Heinrich Jun. (3x), Hoi, Carsten (3x), Dumitrache, Dragos-Nicolae (3x), Gulko, Boris (3x), Szabo, Zsolt (3x)
7…b6 — 6.8% (181 parties)
Ambassadeurs : Lilienthal, Andor (2x), Steiner, Endre (2x), Knechtel, Roland (2x), Gulko, Boris (2x), Sundararajan, Kidambi (2x), Liutsko, Igor (2x), Malicka, Maria (2x), Mukhit, Aisezym (2x)
7…c6 — 3.5% (93 parties)
Ambassadeurs : Bocharov, Dmitry (5x), Lobanov, Sergei (4x), Ibragimov, Ildar (3x), L'Ami, Erwin (3x), Bischoff, Klaus (2x), Rausis, Igors (2x), Hou, Yifan (2x), Sokolov, Ivan (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…dxc4 7…c5 7…b6 7…c6
<1800 31 58% 19% 13% —
1800-2200 477 58% 25% 11% 1%
2200-2600 1610 71% 19% 5% 4%
2600+ 200 83% 7% 2% 8%
Évolution par décennie (% des parties)
Décennie N parties 7…dxc4 7…c5 7…b6 7…c6
1920s 1 — — 100% —
1930s 9 11% 44% 33% —
1940s 37 24% 51% 8% —
1950s 68 50% 32% 6% —
1960s 40 42% 40% 10% —
1970s 58 62% 21% 12% —
1980s 86 65% 26% 5% 1%
1990s 283 57% 26% 9% 3%
2000s 359 57% 28% 8% 1%
2010s 575 58% 24% 10% 4%
2020s 1152 79% 12% 4% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…dxc4 58% 79% ▲ +20.7%
7…c5 24% 12% ▼ -12.5%
7…b6 10% 4% ▼ -6.7%
7…c6 4% 5% ▲ +0.6%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 4 parties
Carlsen, Magnus — 3 parties
Gukesh D — 3 parties
Ju, Wenjun — 3 parties
Hou, Yifan — 2 parties
Euwe, Max — 1 partie
Karpov, Anatoly — 1 partie
Karpov, Aleksandr — 1 partie
Anand, Viswanathan — 1 partie
Ding, Liren — 1 partie
Parties historiques
7…dxc4 — 66.2% (1765 parties)
1939 — Olivera, Alfredo vs Valdes Zavala, Lorenzo — 1-0 — Buenos Aires ol pr-B
1944 — Denker, Arnold S vs Pinkus, Albert — 1-0 — New York ch-USA
1945 — Liublinsky, Victor vs Baturinsky, Victor — 0-1 — Moscow RUS
1946 — Bolbochan, J. vs Cruz Garibaldi, Milton Esteban — 1-0 — Buenos Aires ch-ARG
1949 — Goldberg, Gavriel vs Liskov, I. — 1-0 — Moscow RUS
7…c5 — 20.4% (543 parties)
1931 — Erdelyi, Stefan vs Matisons, Hermanis — 1-0 — Prague CZE
1934 — Holtey, Guillermo vs Concepcion Villegas, Bryan Uriel — 0-1 — Mar del Plata ARG
1936 — Bogoljubow, Efim vs Reshevsky, Samuel — 0-1 — Nottingham ENG
1938 — Sorli, Joze vs Nedeljkovic, Aleksandar — 0-1 — Ljubljana
1940 — Gligoric, Svetozar vs Atijas, M — 1-0 — Belgrado
7…b6 — 6.8% (181 parties)
1923 — Ferrari, Romeo vs Stalda, Giuseppe — 1/2-1/2 — Trieste
1934 — Lilienthal, Andor vs Michell, Reginald — 1-0 — Hastings ENG
1937 — Petrov, Vladimir S. vs Steiner, Endre — 1/2-1/2 — Kemeri LAT
1937 — Petrov, Vladimirs vs Steiner, Endre — 1/2-1/2 — Kemeri LAT
1945 — Lilienthal, Andor vs Aramanovich, I — 1-0 — Moscow RUS
7…c6 — 3.5% (93 parties)
1987 — Rimpineva, Eino vs Huttunen Yrjo — 1/2-1/2 — ?
1990 — Hallila, Andrew Allan vs Ylijoki — 0-1 — corr ch-SF jr
1995 — Ramos Bonilla, Ibsen vs Noakes, Garth — 1-0 — CompuServe email
1996 — Ibragimov, Ildar vs Bischoff, Klaus — 1/2-1/2 — Linares open
1996 — Milov, Vadim vs Rozentalis, Eduardas — 0-1 — Liechtenstein