B77b - 9…a5 - Dragon Yugoslav Byrne Variation [+1.29]

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B77b — Dragon Yugoslav Byrne Variation
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 a5
Eval: [+1.29]
Les coups candidats
10.a4 — 37.4% (76 parties)
Ambassadeurs : Byrne, David (4x), Jirovsky, Milos (4x), Mauro, Alan (4x), Mestrovic, Zvonimir (2x), Hamberger, Hermann (2x), Melamed, Tatjana (2x), Desbonnes, Samy (2x), Avner, Uri (1x)
10.Bb3 — 14.8% (30 parties)
Ambassadeurs : Byrne, David (4x), Matanovic, Aleksandar (3x), Jirovsky, Milos (3x), Parma, Bruno (2x), Boudignon, Serge (2x), Mauro, Alan (2x), Vucic, Mihovil (2x), Polakova Marta (1x)
10.h4 — 14.3% (29 parties)
Ambassadeurs : Byrne, David (3x), Kolbak, Jens (2x), Jirovsky, Pavel (2x), Koch, Jean-Rene (2x), Hennings, Artur (1x), Liptay, Laszlo Dr. (1x), Seidman, Herbert (1x), Reshevsky, Samuel (1x)
10.O-O-O — 13.8% (28 parties)
Ambassadeurs : Jirovsky, Pavel (3x), Svatos, Jan (2x), Gligorić, Svetozar (1x), Parma, Bruno (1x), Menvielle Laccourreye, Augusto (1x), Byrne, David (1x), Neukirch, Detlef (1x), Walkewitz, Hubert (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10.a4 10.Bb3 10.h4 10.O-O-O
<1800 3 — 33% — —
1800-2200 49 39% 8% 18% 24%
2200-2600 64 42% 14% 11% 11%
2600+ 1 — — 100% —
Évolution par décennie (% des parties)
Décennie N parties 10.a4 10.Bb3 10.h4 10.O-O-O
1960s 42 26% 21% 17% 10%
1970s 15 60% 7% 13% 13%
1980s 7 43% — — 14%
1990s 74 43% 15% 9% 14%
2000s 40 38% 18% 22% 10%
2010s 24 25% 8% 12% 29%
2020s 1 — — 100% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10.a4 25% 0% ▼ -25.0%
10.Bb3 8% 0% ▼ -8.3%
10.h4 12% 100% ▲ +87.5%
10.O-O-O 29% 0% ▼ -29.2%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 1 partie
Parties historiques
10.a4 — 37.4% (76 parties)
1962 — Parma, Bruno vs Byrne, David — 1/2-1/2 — Mar del Plata ARG
1965 — Rubinetti, Alejandro vs Bielicki, Carlos — 1/2-1/2 — Buenos Aires ch-ARG
1965 — Holaszek, Hans vs Westman, Jan Erik — 1/2-1/2 — Sinaia
1966 — Mestrovic, Zvonimir vs Avner, Uri — 0-1 — WchTJ U26 fin-A
1966 — Levy, David N L vs Suarez, Luis Armando — 1-0 — Oerebro
10.Bb3 — 14.8% (30 parties)
1961 — Weinstein, Raymond vs Byrne, David — 0-1 — New York, NY USA
1966 — Polakova Marta vs Georgieva, Antonina — 1/2-1/2 — Oberhausen
1966 — Sherwin, James T vs Byrne, David — 1-0 — New York, NY USA
1966 — Parma, Bruno vs Abreu Rodriguez, Juan Luis — 1/2-1/2 — Havana olm
1966 — Parma, Bruno vs Rodriguez Vargas, Orestes — 1/2-1/2 — La Habana ol
10.h4 — 14.3% (29 parties)
1961 — Seidman, Herbert vs Byrne, David — 1-0 — New York, NY USA
1963 — Fischer, Robert J vs Byrne, David — 1-0 — Bay City
1964 — Hennings, Artur vs Liptay, Laszlo Dr. — 1/2-1/2 — Soviet Union
1964 — Jimenez Zerquera, Eleazar vs Bielicki, Carlos — 0-1 — Havana CUB
1965 — Zwaig, Arne vs Johansson, Martin 1979 — 1-0 — Stockholm tt SWE-NOR
10.O-O-O — 13.8% (28 parties)
1963 — Neukirch, Detlef vs Walkewitz, Hubert — 1-0 — Leipzig GER
1964 — Menvielle Laccourreye, Augusto vs Byrne, David — 0-1 — Tel Aviv ISR
1965 — Gligorić, Svetozar vs Parma, Bruno — 1/2-1/2 — Novi Sad SRB
1966 — Djurovic, Dejan vs Mestrovic, Zvonimir — 0-1 — Vrnjacka Banja SRB
1972 — Kotkov, Yuri M vs Rosenberg Morch, Mathias — 0-1 — Moscow RUS