D24i - 4…a6 5.a4 - QGA (1905)

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D24i — QGA (1905)
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3 a6 5.a4
Les coups candidats
Ambassadeurs : Schmitz, Manuela (6x), Menyhart, Tibor (5x), Bernard, Ryszard (4x), Schmitz, Andreas Arnold (4x), Jonkman, Harmen (4x), Faleg, Alberto (3x), Danielian, Elina (3x), Krallmann, Matthias (3x)
5…e6 — 20.3% (334 parties)
Ambassadeurs : Kazmierczak, Ewa (3x), Krivec, Jana (2x), Christaki, Marilia (2x), Ulms, Sandra (2x), Miknevicius, Laurynas (2x), Guliyev, Namig (2x), Mussanti, Diego (2x), Pomar, Humberto (1x)
5…c5 — 6.4% (105 parties)
Ambassadeurs : Smyslov, Vasily (2x), ? (2x), Abou El Zein, Eid Mahmoud (2x), Reefat, Bin-Sattar (2x), Spesny, Jan (2x), Miguel, Nahuel (1x), Calneggia, Raul (1x), Majchrak, Josef (1x)
5…Bf5 — 5.1% (83 parties)
Ambassadeurs : Moguilevsky, M. (2x), Grachev, Jury (2x), Gazvoda, Franc (2x), Freeman, Russell (1x), Dahl, Peter (1x), Schreier, Hansjoerg (1x), Pfleger, Helmut, Dr. (1x), Faleg, Alberto (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…Nc6 5…e6 5…c5 5…Bf5
<1800 88 50% 30% 5% 7%
1800-2200 746 62% 22% 5% 5%
2200-2600 533 71% 17% 7% 4%
2600+ 5 80% 20% — —
Évolution par décennie (% des parties)
Décennie N parties 5…Nc6 5…e6 5…c5 5…Bf5
1950s 23 35% 30% — 22%
1960s 53 58% 15% 13% 6%
1970s 42 62% 24% — 5%
1980s 86 60% 8% 15% 12%
1990s 346 61% 21% 10% 5%
2000s 480 62% 24% 5% 5%
2010s 475 65% 20% 4% 5%
2020s 137 76% 16% 4% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…Nc6 65% 76% ▲ +11.1%
5…e6 20% 16% ▼ -3.7%
5…c5 4% 4% ▼ -0.8%
5…Bf5 5% 1% ▼ -3.2%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 1 partie
Parties historiques
5…Nc6 — 63.3% (1040 parties)
1951 — Herrmann, Ludwig vs Sliwa, Bogdan — 1-0 — Sopot
1951 — Eigler, Ferenc vs Füster, Géza — 0-1 — Hungary ch
1953 — Jezek, Jaroslav vs Stulik, Vlastimil — 0-1 — Prague CZE
1955 — Raletich, George vs Fuster, Geza — 1/2-1/2 — Ottawa CAN
1956 — Breustedt, Werner vs Franz, Joachim — 0-1 — Leipzig ch GDR
5…e6 — 20.3% (334 parties)
1952 — Mueller, Klaus vs Knothe, Karl — 1-0 — Binz GER
1954 — Kara, Neman vs Scarlett H — 1-0 — Nottingham ch-BCF
1955 — Sandor, Bela vs Dely, Peter — 1-0 — Hungary ch
1956 — Tserendagva, Davaanyam vs Walsh, James — 0-1 — Moscow RUS
1957 — O'Sullivan, Donal vs Walsh, Jim — 0-1 — ?
5…c5 — 6.4% (105 parties)
1960 — Yakovlev, Egor vs Egorov, Aian S — 0-1 — ?
1960 — Spassky, Boris V. vs Smyslov, Vasily — 1-0 — Leningrad RUS
1960 — Spassky, Boris Vasily vs Smyslov, Vasily — 1-0 — Leningrad RUS
1964 — Miguel, Nahuel vs Calneggia, Raul — 1-0 — Buenos Aires ARG
1966 — Wotulo, Max vs Kraidman, Yair — 1/2-1/2 — Havana CUB
5…Bf5 — 5.1% (83 parties)
1950 — Rudenko, Ludmila vs Benini, Clarice — 1-0 — Moscow RUS
1952 — Aleman Dovo, Miguel vs Olafsson, Fridrik — 1-0 — Helsinki olm
1956 — Gromek, Jozef vs Partyka, Kazimierz — 1/2-1/2 — Krynica Krynica POL
1959 — Faleg, Alberto vs Moguilevsky, M. — 0-1 — Buenos Aires ARG
1959 — Alvarez Cespedes, Leonardo Valentin vs Moguilevsky, M. — 1/2-1/2 — Buenos Aires ARG