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E47a — Normal Variation (1931)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3
Les coups candidats
Ambassadeurs : Knaak, Rainer (70x), Donner, Jan-Hein (67x), Unzicker, Ferdinand, Dr. (58x), Bakheet Farag (56x), Sarana, Alexey (48x), Salzmann, Stefan (47x), Gligoric, Sofija (46x), Lukacs, Peter (46x)
Ambassadeurs : Gligoric, Sofija (35x), Portisch, Lajos (30x), Korchnoi, Viktor (29x), Popov, Vladimir Valentinovich (28x), Polugaevsky, Lev (27x), Gligoric, Svetozar (26x), Pogorelov, Ruslan (25x), Donner, Jan-Hein (23x)
Ambassadeurs : Babula, Vlastimil (6x), Lombart, Philippe (5x), Ben Artzi, Ido (4x), Milanovic, Danilo (4x), Spassky, Boris Vasily (3x), Bak, Istvan (3x), Spassky, Boris V. (3x), Gligoric, Sofija (3x)
5…Re8 — 1.5% (453 parties)
Ambassadeurs : Vetokhin, Savva (10x), Khubukshanov, Erdem (7x), Lobanov, Sergei (6x), Dudin, Gleb (5x), Sarana, Alexey (5x), Nagy, Gabor (5x), Zhurova, Anna (5x), Karimova, Guldona (5x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…d5 5…c5 5…b6 5…Re8
<1800 1203 71% 20% 5% 1%
1800-2200 8945 70% 22% 4% 1%
2200-2600 15206 71% 23% 2% 2%
2600+ 1412 71% 27% 1% 1%
Évolution par décennie (% des parties)
Décennie N parties 5…d5 5…c5 5…b6 5…Re8
1950s 714 61% 29% 1% 1%
1960s 868 63% 29% 2% 0%
1970s 966 60% 34% 1% 0%
1980s 1424 68% 27% 2% 0%
1990s 2938 65% 28% 2% 1%
2000s 5615 69% 25% 2% 0%
2010s 11654 72% 21% 3% 0%
2020s 6519 74% 17% 2% 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…d5 72% 74% ▲ +1.7%
5…c5 21% 17% ▼ -4.9%
5…b6 3% 2% ▼ -1.5%
5…Re8 0% 6% ▲ +5.1%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Botvinnik, Mikhail — 10 parties
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Kramnik, Vladimir — 10 parties
Anand, Viswanathan — 10 parties
Carlsen, Magnus — 10 parties
Hou, Yifan — 10 parties
Ju, Wenjun — 10 parties
Gukesh D — 10 parties
Ding, Liren — 8 parties
Smyslov, Vladimir — 5 parties
Karpov, Aleksandr — 3 parties
Parties historiques
5…d5 — 70.3% (21594 parties)
1950 — Alexander Tadala vs Sokolsky, Alexey — 1-0 — Moskou ch-URS
1950 — Kluger, Gyula vs Szabo, Laszlo — 1/2-1/2 — Budapest HUN
1950 — Amaro, Lucas Ibrair vs Acoltzi Ruiz, Mariana — 1/2-1/2 — Mar del Plata ARG
1950 — Borisenko, Georgy K vs Averbakh, Yuri L — 1/2-1/2 — Moskou ch-URS
1950 — Boleslavsky, Isaac vs Averbakh, Yuri L — 1-0 — Moscow RUS
5…c5 — 22.7% (6973 parties)
1950 — Szabo, Laszlo vs Pytlakowski, Andrzej — 1-0 — Szcawno Zdroj
1950 — Arlamowski, Edward vs Taimanov, Mark — 0-1 — Schiavno Zdroj
1950 — Gligoric, Sofija vs Castillo, Mabel — 1/2-1/2 — Mar del Plata ARG
1950 — Siegel, Paul vs Eisinger, Max Jr — 1-0 — FRG-ch Bad Pyrmont GER
1950 — Bosch van Rosenthal, Edzard vs Donner, Jan-Hein — 1/2-1/2 — Amsterdam NED
5…b6 — 2.6% (810 parties)
1951 — Cross, James vs Eastman, Gavey — 1/2-1/2 — Forth Worth
1953 — Besprizorny, G. vs Sarosy, Zoltan L — 0-1 — Toronto CAN
1955 — Somers, Staf vs Deiseach, Donald — 1-0 — Antwerp BEL
1956 — Tarnowski, Alfred vs Vukovic, Sava — 1-0 — Krynica POL
1956 — Padevsky, Nikola vs Keres, Paul — 1/2-1/2 — Moscow RUS
5…Re8 — 1.5% (453 parties)
1950 — Amaro, Lucas Ibrair vs De Freitas, Marcio Elisio — 0-1 — Mar del Plata ARG
1951 — Moiseev, Oleg vs Keres, Paul — 0-1 — Moskou ch-URS
1951 — Moiseev, Viktor vs Keres, Paul Petrovich — 0-1 — USSRch
1952 — Carvalho, Flavio vs De Freitas, Marcio Elisio — 1-0 — Sao Paulo BRA
1952 — Boleslavsky, Isaac vs Kasparian, Genrikh — 1-0 — Moskou ch-URS