D90g - 5.Qa4+ - Flohr Variation (1944)

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D90g — Flohr Variation (1944)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qa4+
Les coups candidats
5…Bd7 — 65.9% (523 parties)
Ambassadeurs : Sokolov, Ivan (9x), Gomez, John Paul (9x), Rajkovic, Dusan (7x), Giorgadze, Giorgi Gel (6x), Kudischewitsch, David (6x), Moranda, Wojciech (6x), Van Wely, Loek (5x), Vegh, Endre (5x)
5…c6 — 29.2% (232 parties)
Ambassadeurs : Uhlmann, Wolfgang (4x), Timman, Jan H (4x), De Freitas, Marcio Elisio (3x), Bertok, Mario Jr. (3x), Ratkovic, Milovan (3x), Simagin, Vladimir (2x), Emma, Jaime (2x), Perez Perez, Francisco Jose (2x)
5…Nc6 — 4.4% (35 parties)
Ambassadeurs : Saidy, Anthony (2x), Byrne, David (2x), Kavalek, Lubomir (1x), Westerinen, Heikki M.J. (1x), Nemec, Tadeus (1x), Zdrazil, Bohumir (1x), Emma, Jaime (1x), Garcia Palermo, Carlos Horacio (1x)
5…Qd7 — 0.3% (2 parties)
Ambassadeurs : Finegold, Ronald (1x), Foord, A. (1x), Mansilla Lou, Lluis (1x), Rodriguez Beltran, Fernando (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…Bd7 5…c6 5…Nc6 5…Qd7
<1800 17 65% 29% 6% —
1800-2200 190 47% 48% 4% 1%
2200-2600 457 71% 24% 5% —
2600+ 56 95% 4% 2% —
Évolution par décennie (% des parties)
Décennie N parties 5…Bd7 5…c6 5…Nc6 5…Qd7
1950s 16 50% 50% — —
1960s 12 50% 50% — —
1970s 72 58% 33% 8% —
1980s 62 73% 24% 3% —
1990s 61 57% 36% 5% 2%
2000s 141 62% 32% 6% —
2010s 379 71% 25% 3% 0%
2020s 51 61% 31% 6% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…Bd7 71% 61% ▼ -9.9%
5…c6 25% 31% ▲ +6.0%
5…Nc6 3% 6% ▲ +2.5%
5…Qd7 0% 0% -0.3%
Joueurs célèbres
Champions du monde dans cette position
Ding, Liren — 2 parties
Botvinnik, Mikhail — 1 partie
Kasparov, Garry — 1 partie
Parties historiques
5…Bd7 — 65.9% (523 parties)
1950 — Martin M Pereira vs Bolbochan, Julio — 1-0 — Mar del Plata ARG
1950 — Florian, Tibor vs Molnar, Istvan — 0-1 — Budapest HUN
1951 — Fiedrich, William vs Zalys, Ignas — 0-1 — cr Golden Knights
1952 — Flohr, Salo vs Botvinnik, Mikhail — 1/2-1/2 — Moscow RUS
1952 — De Freitas, Marcio Elisio vs Prosdocimi, Arrigo — 0-1 — Sao Paulo BRA
5…c6 — 29.2% (232 parties)
1950 — De Freitas, Marcio Elisio vs Rossetto, Hector — 0-1 — It Mar del Plata ARG
1952 — Kan, Ilya vs Ilivitsky, Georgy A — 1/2-1/2 — Moskou ch-URS
1952 — Eidelman, Mauricio vs De Souza Mendes, Joao — 0-1 — Rio de Janeiro BRA
1954 — Flohr, Salomon vs Rotunno, Ernesto — 1-0 — Montevideo URU
1954 — Chistiakov, Alexander vs Korchnoi, Viktor — 1-0 — Riga LAT
5…Nc6 — 4.4% (35 parties)
1971 — Kavalek, Lubomir vs Westerinen, Heikki M.J. — 1-0 — Venice ITA
1972 — Saidy, Anthony vs Byrne, David — 0-1 — San Antonio, TX USA
1972 — Saidy, Anthony vs Byrne, David — 0-1 — San Antonio, TX USA
1973 — Doroshkievich, Vladimir K vs Veksler, Aleksander L — 1/2-1/2 — ?
1976 — Emma, Jaime vs Garcia Palermo, Carlos Horacio — 1-0 — Mar del Plata ARG
5…Qd7 — 0.3% (2 parties)
1991 — Finegold, Ronald vs Foord, A. — 1-0 — Flint ch-MI S
2012 — Mansilla Lou, Lluis vs Rodriguez Beltran, Fernando — 1-0 — Barcelona ESP