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A12e — London Defence (1930)
1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5
Les coups candidats
Ambassadeurs : Feustel, Bernd (8x), Freisler, Pavel (5x), Narkun, Michal (5x), Spiridonov, Nikola (4x), Derikum, Axel (4x), Bernhoeft, Erhard (4x), Smyslov, Vasily (3x), Bak, Istvan (3x)
5.Bb2 — 20.8% (346 parties)
Ambassadeurs : Skalkotas, Nikolaos (2x), Formanek, Edward (2x), Sloth, Jorn (2x), Markowski, Tomasz (2x), Ftacnik, Lubomir (2x), Loiret, Stanislas (2x), Rozhnev, Gennady (2x), Lloyd, Kenneth William (1x)
5.d3 — 3.3% (55 parties)
Ambassadeurs : Matorin, Evgeny (2x), Wolk, Sigmund (1x), Eisinger, Max Jr (1x), Geus, William J (1x), Kalinovsky, Peter (1x), Krnic, Zdenko (1x), Samovojska, Damir (1x), Tate, Emory (1x)
5.Ba3 — 3.1% (51 parties)
Ambassadeurs : Znamenacek, Kvetoslav (8x), Salokangas, Hannu (3x), Petrosian, Tigran V. (2x), Tal, Mikhail (2x), Benko, Pal (2x), Ree, Hans (2x), Knudsen, Per (2x), Addison, Patrick (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.Bg2 5.Bb2 5.d3 5.Ba3
<1800 80 68% 25% 6% 1%
1800-2200 732 73% 21% 4% 2%
2200-2600 563 70% 23% 2% 5%
2600+ 7 86% 14% — —
Évolution par décennie (% des parties)
Décennie N parties 5.Bg2 5.Bb2 5.d3 5.Ba3
1950s 22 68% 23% 5% —
1960s 36 69% 17% 3% 11%
1970s 62 76% 16% — 8%
1980s 110 80% 15% 2% 3%
1990s 397 69% 22% 4% 5%
2000s 503 72% 21% 4% 2%
2010s 442 74% 21% 3% 1%
2020s 88 68% 25% 5% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.Bg2 74% 68% ▼ -5.6%
5.Bb2 21% 25% ▲ +3.5%
5.d3 3% 5% ▲ +1.6%
5.Ba3 1% 2% ▲ +0.9%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 5 parties
Botvinnik, Mikhail — 2 parties
Smyslov, Vladimir — 1 partie
Karpov, Anatoly — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
5.Bg2 — 72.3% (1200 parties)
1951 — Smyslov, Vladimir vs Keres, Paul Petrovich — 0-1 — Moskou ch-URS
1953 — Smyslov, Vasily vs Bronstein, David I — 1/2-1/2 — Zurich SUI
1954 — Fuderer, Andrija vs Cortlever, Nico — 1-0 — Amsterdam ol final
1955 — Averbakh, Yuri L vs Borisenko, Georgy K — 1/2-1/2 — Moskou ch-URS
1955 — Kevitz, Alexander vs Klugman, Reuben — 1-0 — New York, NY USA
5.Bb2 — 20.8% (346 parties)
1951 — Smyslov, Vasily vs Keres, Paul — 1-0 — Moscow RUS
1952 — Hajtun, Jozsef vs Pogats, Jozsef Jr. — 0-1 — Gyor
1954 — Filip, Miroslav vs Lundin, Erik — 1/2-1/2 — Amsterdam NED
1958 — Lloyd, Kenneth William vs Lemvig-Fog, Malte — 1-0 — Hastings ENG
1958 — Smiltiner, Shlomo vs Vaitonis, Povilas — 1-0 — Munich GER
5.d3 — 3.3% (55 parties)
1959 — Wolk, Sigmund vs Eisinger, Max Jr — 1-0 — Nuerenberg GER
1960 — Geus, William J vs Kalinovsky, Peter — 1/2-1/2 — Adelaide AUS
1987 — Tate, Emory vs Steffens, George — 1/2-1/2 — Aalborg DEN
1988 — Krnic, Zdenko vs Samovojska, Damir — 0-1 — Belgrade open
1990 — Hentunen, Asko vs Henttinen, Markku I.O. — 0-1 — Espoo
5.Ba3 — 3.1% (51 parties)
1962 — Petrosian, Tigran V. vs Tal, Mikhail — 1-0 — ?
1962 — Petrosian, Tigran V. vs Tal, Mikhail — 1-0 — Curacao ct
1966 — Benko, Pal vs Addison, Wiliam G — 0-1 — New York ch-USA
1967 — Benko, Pal vs Addison, Patrick — 0-1 — ?
1971 — Ree, Hans vs Biyiasas, Peter — 1-0 — USA-72ch Ventura