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E01a — Closed (1938)
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2
Les coups candidats
Ambassadeurs : Sosonko, Gennadi (49x), Karpov, Anatoly (35x), Campani, Paolo (33x), Mason, Ian J (29x), Frijling, Jeroen (28x), Mikhalevski, Victor (26x), ? (26x), Beliavsky, Alexander G (20x)
Ambassadeurs : Sosonko, Gennadi (32x), Sokolov, Andrei (31x), Korchnoi, Viktor (29x), Mason, Ian J (29x), Haba, Petr (25x), Frijling, Jeroen (24x), Vinchev, Simeon (21x), Razuvaev, Yuri S (18x)
Ambassadeurs : Tiviakov, Sergei (46x), Campani, Paolo (38x), Mason, Ian J (27x), Acciaro, Giuseppe (24x), Frijling, Jeroen (24x), Kireev, Vladimir Vasilyevich (20x), Galjé, Hans (19x), Campbell, Eoin S. (17x)
Ambassadeurs : Besozzi, Ferdinando (12x), Haba, Petr (6x), Aannevik, Bjarne (6x), Rigo, Janos (5x), Szczepanski, Zbigniew (5x), Chu, Ruotong (5x), Thorfinnsson, Bragi (4x), Straub, Natalia (4x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Be7 4…dxc4 4…Bb4+ 4…c6
<1800 1237 39% 20% 14% 12%
1800-2200 9224 39% 23% 17% 12%
2200-2600 11486 38% 29% 23% 5%
2600+ 957 40% 28% 29% 0%
Évolution par décennie (% des parties)
Décennie N parties 4…Be7 4…dxc4 4…Bb4+ 4…c6
1950s 325 23% 49% 2% 14%
1960s 161 38% 34% 6% 12%
1970s 484 46% 29% 3% 10%
1980s 1492 49% 33% 5% 6%
1990s 2968 42% 26% 9% 14%
2000s 4828 41% 29% 10% 12%
2010s 9418 38% 26% 22% 8%
2020s 6125 34% 23% 32% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Be7 38% 34% ▼ -3.6%
4…dxc4 26% 23% ▼ -3.1%
4…Bb4+ 22% 32% ▲ +10.4%
4…c6 8% 4% ▼ -3.3%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Anand, Viswanathan — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Ju, Wenjun — 10 parties
Hou, Yifan — 10 parties
Ding, Liren — 10 parties
Gukesh D — 10 parties
Smyslov, Vladimir — 3 parties
Tal, Mikhail — 3 parties
Botvinnik, Mikhail — 1 partie
Karpov, Aleksandr — 1 partie
Parties historiques
4…Be7 — 38.5% (9928 parties)
1950 — Lilienthal, Andor vs Stahlberg, Gideon — 1/2-1/2 — Budapest HUN
1950 — Flohr, Salo vs Stahlberg, Gideon — 1/2-1/2 — Budapest HUN
1950 — Novotelnov, Nikolai vs Kholmov, Ratmir D — 0-1 — URS-ch sf Tartu
1950 — Golombek, Harry vs Barden, Leonard — 1/2-1/2 — Southsea
1950 — Stein, Georg vs Atze, Burkhard — 1-0 — Soemmerda GER
4…dxc4 — 26.6% (6857 parties)
1950 — Smyslov, Vladimir vs Averbakh, Yuri L — 1/2-1/2 — Moskou ch-URS
1950 — Smyslov, Vasily vs Averbakh, Yuri L — 1/2-1/2 — Moscow RUS
1950 — Keres, Paul vs Lipnitsky, Isaac — 1/2-1/2 — Moskou ch-URS
1950 — Smyslov, Vasily vs Konstantinopolsky, Alexander — 1/2-1/2 — Moskou ch-URS
1950 — Dunkelblum, Arthur vs Flores, Ranz Kirby Anthony — 1/2-1/2 — Dubrovnik olm
4…Bb4+ — 18.9% (4876 parties)
1950 — Anay Barche vs Arlamowski, Lara — 1-0 — Schiavno Zdroj
1951 — Meyer, Heinrich vs Hoffmann Bruno — 1-0 — Minden
1953 — Porreca, Giorgio vs Pirc, Vasja — 0-1 — Opatija
1953 — Bulat, Ante vs Pirc, Vasja — 0-1 — Zagreb CRO
1954 — Bouwmeester, Hans vs Pirc, Vasja — 0-1 — Munich GER
4…c6 — 8.3% (2137 parties)
1950 — Stein, Georg vs Schlieder, Rolf — 1/2-1/2 — Soemmerda GER
1950 — Koltermann vs Horenstein — 1-0 — USSR
1950 — Dunkelblum, Arthur vs Pfeiffer, Gerhard — 1/2-1/2 — Dubrovnik olm
1950 — Kluger, Gyula vs Vajda, Arpad — 1/2-1/2 — Budapest HUN
1950 — Shainswit, George vs Pfeiffer, Gerhard — 1-0 — Dubrovnik olm