E81l - 7.Bd3 a6 - King's Indian Defense: Sämisch Variation, Byrne Defense (1956)

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E81l — Sämisch Variation, Byrne Defense (1956)
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 c6 7.Bd3 a6
Les coups candidats
8.Nge2 — 64.5% (359 parties)
Ambassadeurs : Seeman, Tarvo (7x), Timman, Jan H (6x), Byrne, Robert E (5x), Hort, Vlastimil (5x), Barbu, George-Viorel (5x), Grego, Luis Gonzaga (5x), Utnasunov, Alexander (4x), Haba, Petr (4x)
8.a4 — 27.8% (155 parties)
Ambassadeurs : Knaak, Rainer (3x), Gheorghiu, Florin (2x), Barbu, George-Viorel (2x), Farcadi, Hunor (2x), Rietze, Clemens, Dr. (2x), Krogius, Nikolai V (1x), Yuan, Zhilin (1x), Crabbendam, Hans (1x)
8.Qd2 — 5.0% (28 parties)
Ambassadeurs : Hort, Vlastimil (1x), Ciocaltea, Victor (1x), Eising, Johannes (1x), Dresen, Ulrich (1x), Lengyel, Levente (1x), Bogdanovic, Rajko (1x), Klasetzki, Marcos (1x), Paz y Barriga, Gustavo Ing (1x)
8.c5 — 1.4% (8 parties)
Ambassadeurs : Schwarz, Anton (1x), Kopylov, Igor A (1x), Kurtz, Murray (1x), Rousseau, Daniel (1x), Mayer, Steven F. (1x), Conner, Samuel (1x), Karolyi, Tibor (1x), Summermatter, Daniel (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8.Nge2 8.a4 8.Qd2 8.c5
<1800 26 65% 27% — —
1800-2200 167 59% 34% 4% 2%
2200-2600 235 65% 28% 6% 1%
2600+ 8 62% 25% — 12%
Évolution par décennie (% des parties)
Décennie N parties 8.Nge2 8.a4 8.Qd2 8.c5
1950s 7 71% 29% — —
1960s 22 77% 18% 5% —
1970s 45 80% 13% 4% —
1980s 47 68% 17% 2% 9%
1990s 175 67% 25% 7% —
2000s 118 63% 32% 4% 1%
2010s 131 55% 37% 4% 2%
2020s 12 42% 50% 8% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.Nge2 55% 42% ▼ -13.3%
8.a4 37% 50% ▲ +13.4%
8.Qd2 4% 8% ▲ +4.5%
8.c5 2% 0% ▼ -2.3%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 1 partie
Tal, Mikhail — 1 partie
Karpov, Anatoly — 1 partie
Kasparov, Garry — 1 partie
Ding, Liren — 1 partie
Parties historiques
8.Nge2 — 64.5% (359 parties)
1956 — Gniot, Tadeusz vs Gromek, Jozef — 0-1 — Krynica POL
1956 — Polugaevsky, Lev vs Yukhtman, Yakov — 1/2-1/2 — Tbilisi GEO
1957 — Alexandre, Sekfali vs Petrosian, Tigran V. — 1/2-1/2 — Kiev UKR
1957 — Sokolsky, Alexey vs Petrosian, Tigran A. — 1/2-1/2 — Kiev UKR
1957 — Palmqvist, Ulf vs Gipslis, Aivars — 0-1 — Reykjavik ISL
8.a4 — 27.8% (155 parties)
1957 — O'Sullivan, Donal vs Benko, Pal — 0-1 — Dublin zt
1958 — Krogius, Nikolai V vs Yuan, Zhilin — 1-0 — Sochi RUS
1966 — Gheorghiu, Florin vs Savon, Vladimir — 1-0 — Orebro Wch student
1968 — Crabbendam, Hans vs Tatai, Stefano — 0-1 — Wijk aan Zee NED
1968 — Brostrom, Goran vs Nilsson, Zandor — 1/2-1/2 — Norrkoeping
8.Qd2 — 5.0% (28 parties)
1966 — Hort, Vlastimil vs Ciocaltea, Victor — 1/2-1/2 — Havana olm
1971 — Lengyel, Levente vs Bogdanovic, Rajko — 1/2-1/2 — Sarajevo Sarajevo BIH
1978 — Klasetzki, Marcos vs Paz y Barriga, Gustavo Ing — 0-1 — LIPEAP Monsalvo Memorial
1985 — Eising, Johannes vs Dresen, Ulrich — 0-1 — Germany West
1990 — Ballschuh, Siegfried vs Trottnow, Hans-Joachim — 0-1 — corr WT/M
8.c5 — 1.4% (8 parties)
1981 — Kurtz, Murray vs Rousseau, Daniel — 0-1 — Montreal CAN
1984 — Schwarz, Anton vs Kopylov, Igor A — 0-1 — W-ch13 q03 corr8489
1986 — Karolyi, Tibor vs Summermatter, Daniel — 1-0 — Kecskemet HUN
1989 — Mayer, Steven F. vs Conner, Samuel — 1-0 — Maryland
2005 — Hareux, Hubert vs Caudiu, Eric — 1-0 — Le Touquet FRA