D47b - 7.Bxc4 b5 8.Bb3 - Meran Freymann Variation

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D47b — Meran Freymann Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bb3
Les coups candidats
Ambassadeurs : Yudovich, Mikhail M (5x), Stempin, Pawel (4x), Dorfman, Iossif (4x), Pomar Salamanca, Arturo (3x), Douven, Rudy (3x), Sveshnikov, Evgeny (3x), Grooten, Herman (3x), Tolush, Alexander (2x)
8…Bb7 — 28.7% (287 parties)
Ambassadeurs : Ignacz, Maria (3x), Fairhurst, William (2x), Pyrich, George (2x), Stempin, Pawel (2x), Razuvaev, Yuri S (2x), Sadler, Matthew D (2x), Maduekwe, Chiedu (2x), ? (2x)
8…a6 — 17.1% (171 parties)
Ambassadeurs : Rejfir, Josef (3x), Nakhbayeva, Guliskhan (3x), Shyngys Kyzy, Aizharkyn (3x), Von Holzhausen, Walther (2x), Trompowsky, Octavio (2x), Pomar Salamanca, Arturo (2x), Delveborn, Ingemar (2x), Stoltz, Gosta (1x)
8…Be7 — 4.2% (42 parties)
Ambassadeurs : Kotov Lundqvist, Alex (2x), Fairhurst, William (1x), Reshevsky, Samuel (1x), Sakharov, Yuri G. (1x), Geller, Efim P. (1x), Winiwarter, Felix (1x), Brandts, Paul (1x), Shainswit, George (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…b4 8…Bb7 8…a6 8…Be7
<1800 28 64% 21% 14% —
1800-2200 345 35% 36% 21% 3%
2200-2600 374 53% 29% 11% 4%
2600+ 20 75% 10% — 5%
Évolution par décennie (% des parties)
Décennie N parties 8…b4 8…Bb7 8…a6 8…Be7
1920s 5 — 20% 80% —
1930s 12 33% 8% 50% 8%
1940s 14 71% 14% 7% —
1950s 26 62% 19% 8% 12%
1960s 30 73% 10% 13% 3%
1970s 31 71% 16% 13% —
1980s 70 67% 16% 11% 6%
1990s 170 46% 28% 19% 6%
2000s 274 45% 31% 17% 3%
2010s 291 41% 32% 18% 3%
2020s 76 37% 42% 13% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…b4 41% 37% ▼ -4.1%
8…Bb7 32% 42% ▲ +9.8%
8…a6 18% 13% ▼ -5.1%
8…Be7 3% 5% ▲ +1.8%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 2 parties
Anand, Viswanathan — 2 parties
Botvinnik, Mikhail — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
8…b4 — 46.9% (469 parties)
1931 — Rejfir, Josef vs Noteboom, Daniël — 1-0 — Prague CZE
1932 — Dobias, Josef vs Vecsey, Zoltan — 1-0 — Prague CZE
1932 — Kottnauer, Cenek vs Bogoljubow, Efim — 1-0 — clock simul Prague
1937 — Tartakower, Savielly vs Szpiro, Abram — 1/2-1/2 — Jurata ch POL
1944 — Ravinsky, Grigory vs Kotov Lundqvist, Alex — 1-0 — Moskou ch-URS
8…Bb7 — 28.7% (287 parties)
1928 — Kinman John Arthur vs Purdy, Cecil J S — 0-1 — Sydney AUS
1932 — Michell, Reginald vs Jackson, Edward Mackenzie — 1-0 — Whiteleys, London
1946 — Fairhurst, William vs Steiner, Heinrich Jun. — 0-1 — London ENG
1946 — Fairhurst, William vs Steiner, Herman — 0-1 — London ENG
1950 — Mengarini, Ariel vs Miller, George — 1-0 — Detroit US op
8…a6 — 17.1% (171 parties)
1927 — Buerger, Victor vs Thomas, George Alan — 1-0 — London ENG
1928 — Bogoljubow, Efim vs Von Holzhausen, Walther — 1-0 — Berlin GER
1928 — Saemisch, Friedrich vs Von Holzhausen, Walther — 1-0 — Berlin GER
1929 — Rejfir, Josef vs Zobel, L — 1-0 — Brno ch CZE
1930 — Rejfir, Josef vs Lundin, Erik — 1-0 — Hamburg olm
8…Be7 — 4.2% (42 parties)
1935 — Fairhurst, William vs Reshevsky, Samuel — 0-1 — Margate ENG
1956 — Brandts, Paul vs Shainswit, George — 1/2-1/2 — New York, NY USA
1957 — Kotov Lundqvist, Alex vs Sakharov, Yuri G. — 1-0 — Kiev UKR
1957 — Geller, Efim P. vs Winiwarter, Felix — 1-0 — Szczawno Zdroj
1960 — Kotov Lundqvist, Alex vs Pfeiffer, Gerhard — 1/2-1/2 — Hamburg WGER-USSR