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A28l — Four Knights, Nenarokov Variation (1904)
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Bg5 h6 7.Bh4 Bxc3+ 8.bxc3 Ne5
Les coups candidats
Ambassadeurs : Suba, Mihai (27x), Jørgensen, Brian Jørgen (27x), Moujan, Pablo Miguel (24x), Bishop, William (23x), Banas, Jan (22x), Timman, Jan H (22x), Ellis, James (20x), Bishop, Nicholas (19x)
9.Be7 — 12.9% (1251 parties)
Ambassadeurs : ? (6x), Nei, Iivo (5x), Prandstetter, Eduard (5x), Suba, Mihai (5x), Tompa, Janos (5x), Gavrilov, Alexei (5x), Mikenas, Vladas (4x), Tal, Mikhail (4x)
9.d5 — 10.7% (1041 parties)
Ambassadeurs : Amin, Ashraf (4x), Vaitonis, Povilas (3x), Djabri, Zafer M. (3x), Machlik, Edit (3x), Rusinkevich, Nina (2x), Hoffmann, Michael (2x), Holsapple, Boyd (2x), Gyurkovics, Miklos (2x)
9.d6 — 5.8% (561 parties)
Ambassadeurs : Hohler, Peter (4x), Abel, Peter (4x), Adamski, Jan (3x), Filguth, Rubens Alberto (3x), Hecht, Hans-Joachim (3x), Trois, Francisco R.T. (3x), Suba, Mihai (3x), Harasta, Vladimir (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.Bb4 9.Be7 9.d5 9.d6
<1800 475 64% 8% 15% 8%
1800-2200 3125 64% 11% 15% 6%
2200-2600 4464 69% 15% 7% 5%
2600+ 321 80% 7% 4% 2%
Évolution par décennie (% des parties)
Décennie N parties 9.Bb4 9.Be7 9.d5 9.d6
1950s 42 24% 31% 31% 7%
1960s 63 56% 19% 8% 16%
1970s 414 65% 13% 6% 12%
1980s 740 59% 22% 9% 8%
1990s 1243 56% 18% 12% 9%
2000s 1724 61% 15% 13% 7%
2010s 3660 71% 10% 10% 5%
2020s 1811 75% 9% 10% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Bb4 71% 75% ▲ +3.5%
9.Be7 10% 9% ▼ -0.9%
9.d5 10% 10% +0.2%
9.d6 5% 2% ▼ -2.1%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Ding, Liren — 10 parties
Carlsen, Magnus — 6 parties
Kasparov, Garry — 5 parties
Tal, Mikhail — 5 parties
Anand, Viswanathan — 5 parties
Smyslov, Vladimir — 1 partie
Hou, Yifan — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
9.Bb4 — 66.5% (6453 parties)
1951 — Heinicke, Herbert vs Bogoljubow, Efim — 0-1 — Augsburg GER
1952 — Filip, Miroslav vs Potucek, Ludovit — 1-0 — Tatranska ch CZE
1953 — Borodin, Vladimir vs Lemaire, Robert — 0-1 — Antwerp BEL
1954 — Antonio Molina, Zayra Angelina vs Tikovsky, Augustin — 0-1 — Jablonec nad Nisou
1957 — Feuerstein, Arthur vs Elter, Sophia — 1/2-1/2 — New York, NY USA
9.Be7 — 12.9% (1251 parties)
1950 — Mikenas, Vladas vs Keres, Paul — 0-1 — Moskou ch-URS
1950 — Smyslov, Vasily vs Mikenas, Vladas — 1-0 — Moskou ch-URS
1952 — Ilivitsky, Georgy A vs Bannik, Anatolij — 1/2-1/2 — Riga LAT
1952 — Nei, Iivo vs Mikenas, Vladas — 1/2-1/2 — Riga LAT
1955 — Filchev, Rusko vs Gasharov, Nikola — 1-0 — Sofia BUL
9.d5 — 10.7% (1041 parties)
1951 — Vaitonis, Povilas vs Yerhoff, Frank — 1-0 — Vancouver
1951 — Sandrin, Albert vs Donovan, Jeremiah — 0-1 — Forth Worth
1952 — Ilivitsky, Georgy A vs Chestnov, Vitaliy A. — 1/2-1/2 — Riga LAT
1954 — Rusinkevich, Nina vs Tikhomirova, Vera N — 1/2-1/2 — ?
1954 — Dolezal, Jiri vs Parak, Frantisek — 1-0 — Prague CZE
9.d6 — 5.8% (561 parties)
1954 — Anay Barche vs Pfeiffer, Gerhard — 0-1 — Amsterdam olm
1955 — Martins, Poul vs Madsen, Eigil — 0-1 — Esbjerg DEN
1959 — Pachman, Ludek vs Ivan, Imrich — 1-0 — Bratislava SVK
1960 — Seleznev, Valentin vs Yuan, Zhilin — 1/2-1/2 — Perm RUS
1960 — Doda, Zbigniew vs Witkowski, Stefan — 1-0 — Poland ch