E51a - 6.* - Normal Variation, Ragozin Variation (1925)

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E51a — Normal Variation, Ragozin Variation (1925)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5
Les coups candidats
Ambassadeurs : ? (14x), Emma, Jaime (9x), Kozma, Julius (9x), Averbakh, Yuri L (8x), Swahnberg, Lars (8x), Abanin, Vladimir (6x), Portisch, Lajos (6x), Petrosian, Tigran V. (5x)
6.Bd2 — 17.4% (1039 parties)
Ambassadeurs : Rakhmanov, Aleksandr (9x), Riazantsev, Alexander (9x), Le, Quang Liem (8x), Esipenko, Andrey (7x), Salemgareev, Tagir (4x), Buhmann, Rainer (4x), Wojtaszek, Radoslaw (4x), Khademalsharieh, Sarasadat (4x)
Ambassadeurs : Korchnoi, Viktor (11x), Kozma, Julius (4x), Estrin, Yakov (3x), Kholmov, Ratmir D (3x), Szabo, Laszlo (3x), Olafsson, Fridrik (3x), Portisch, Lajos (3x), Peralta, Fernando (3x)
Ambassadeurs : Vaisser, Anatoli (10x), Kolanek, Roman (6x), Balashov, Yuri (5x), Sørensen, Michael D. F. (5x), Marciano, David (4x), Lehmann, Heinz (3x), Anay Barche (2x), Panno, Oscar (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6.Bd3 6.Bd2 6.a3 6.Be2
<1800 360 64% 17% 8% 5%
1800-2200 1902 62% 14% 11% 6%
2200-2600 2514 60% 22% 9% 5%
2600+ 213 42% 44% 8% 5%
Évolution par décennie (% des parties)
Décennie N parties 6.Bd3 6.Bd2 6.a3 6.Be2
1950s 163 75% 3% 15% 4%
1960s 206 61% 5% 20% 12%
1970s 158 77% 3% 12% 4%
1980s 230 79% 2% 9% 8%
1990s 583 72% 4% 13% 7%
2000s 1173 71% 7% 10% 4%
2010s 2173 65% 16% 9% 6%
2020s 1279 40% 45% 7% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6.Bd3 65% 40% ▼ -24.7%
6.Bd2 16% 45% ▲ +29.5%
6.a3 9% 7% ▼ -2.4%
6.Be2 6% 4% ▼ -1.9%
Joueurs célèbres
Champions du monde dans cette position
Ju, Wenjun — 6 parties
Kramnik, Vladimir — 3 parties
Gukesh D — 3 parties
Tal, Mikhail — 2 parties
Anand, Viswanathan — 2 parties
Carlsen, Magnus — 2 parties
Karpov, Anatoly — 1 partie
Parties historiques
6.Bd3 — 62.4% (3721 parties)
1950 — Bondarevsky, Igor vs Sokolsky, Alexey — 1/2-1/2 — Moskou ch-URS
1950 — Alatortsev, Vladimir N. vs Petrosian, Tigran V. — 1/2-1/2 — Moskou ch-URS
1950 — Millin, Paolo vs Camorani, M. — 1-0 — San Marino SMR
1950 — Alatortsev, Vladimir N. vs Petrosian, Arshak B — 1/2-1/2 — URS-ch18 Moscow
1950 — Collet, Hugo vs Eken, Max — 1/2-1/2 — It Beverwijk NED
6.Bd2 — 17.4% (1039 parties)
1953 — Kholmov, Ratmir D vs Sokolsky, Alexey — 0-1 — USSR
1954 — Al Husari, Zita Fatima vs Kozma, Julius — 1/2-1/2 — Prague CZE
1955 — Troeger, Paul vs Neu, Aloyse — 1-0 — ?
1957 — Teschner, Rudolf vs Kozma, Julius — 0-1 — Wenen etc
1958 — Bosch van Rosenthal, Edzard vs Bouwmeester, Hans — 0-1 — Beverwijk NED
6.a3 — 9.7% (581 parties)
1950 — Pilnik, Herman vs Rabar, Braslav — 1/2-1/2 — Bled SLO
1950 — Alexander Tadala vs Abramov, Lev — 0-1 — Leningrad ch sf
1950 — Pilnik, Herman vs Kostic, Boris — 1-0 — Bled SLO
1951 — Alster, Ladislav vs Pachman, Ludek — 0-1 — Prague CZE
1952 — Glotov, Vladimir vs Kogan, Sergey M — 1-0 — Moscow RUS
6.Be2 — 5.3% (316 parties)
1954 — Trifunovic, Petar vs Anay Barche — 1/2-1/2 — Amsterdam olm
1955 — Panno, Oscar vs Petrosian, Tigran V. — 1/2-1/2 — Goteborg izt
1957 — Anay Barche vs Sliwa, Bogdan — 0-1 — Sofia zt Sofia BUL
1957 — Panno, Oscar vs Casas Perea, Fernando — 1-0 — Mar del Plata ARG
1958 — Pogrebissky, Iosif vs Zamkovskaya, Violetta Aleks — 1-0 — Kiev UKR