A30i - 6…a6 - Symmetrical, Hedgehog (1934)

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A30i — Symmetrical, Hedgehog (1934)
1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 a6
Les coups candidats
7.d4 — 37.3% (720 parties)
Ambassadeurs : Suba, Mihai (28x), Marin, Mihail (10x), Gheorghiu, Florin (8x), Ionescu, Constantin (7x), Krallmann, Matthias (7x), Pogorelov, Ruslan (7x), Michaelsen, Nils (5x), Ljubojevic, Ljubomir (4x)
7.Re1 — 31.6% (609 parties)
Ambassadeurs : Marin, Mihail (12x), Suba, Mihai (9x), Wojtkiewicz, Aleksander (8x), Bogosavljevic, Boban (6x), Kovacevic, Slobodan (5x), Paschall, William (4x), Nyysti, Sampsa (4x), Bosboom, Manuel (4x)
7.b3 — 24.6% (474 parties)
Ambassadeurs : Suba, Mihai (17x), Kovacevic, Slobodan (9x), Andersson, Ulf (9x), Psakhis, Lev (6x), Hjartarson, Johann (6x), Wojtkiewicz, Aleksander (5x), King, Daniel J (4x), Foisor, Ovidiu-Doru (4x)
7.d3 — 2.8% (54 parties)
Ambassadeurs : Broffman, Peter (2x), Olesen, Martin (2x), Scoones, Dan (1x), Done, Stefan-Daniel (1x), Kristiansen, Jens (1x), Sorensen, Torben (1x), Lehmann, Karl-Heinz (1x), Foisor, Ovidiu-Doru (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.d4 7.Re1 7.b3 7.d3
<1800 30 40% 17% 17% 17%
1800-2200 449 36% 29% 20% 7%
2200-2600 1345 37% 33% 26% 1%
2600+ 43 33% 30% 35% 2%
Évolution par décennie (% des parties)
Décennie N parties 7.d4 7.Re1 7.b3 7.d3
1970s 74 39% 8% 53% —
1980s 186 44% 13% 39% 3%
1990s 464 38% 31% 24% 3%
2000s 570 35% 37% 20% 2%
2010s 515 37% 35% 22% 4%
2020s 121 38% 33% 20% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.d4 37% 38% ▲ +1.1%
7.Re1 35% 33% ▼ -1.9%
7.b3 22% 20% ▼ -1.7%
7.d3 4% 3% -0.4%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 6 parties
Tal, Mikhail — 3 parties
Kramnik, Vladimir — 3 parties
Carlsen, Magnus — 3 parties
Kasparov, Garry — 1 partie
Ju, Wenjun — 1 partie
Gukesh D — 1 partie
Ding, Liren — 1 partie
Parties historiques
7.d4 — 37.3% (720 parties)
1975 — Portisch, Lajos vs Andersson, Ulf — 0-1 — Milan ITA
1975 — Petrosian, Tigran A. vs Garcia Martinez, Silvino — 1-0 — Moscow RUS
1975 — Petrosian, Tigran A. vs Andersson, Ulf — 1/2-1/2 — Milan ITA
1976 — Manasterski, Lutoslaw vs Szumilo, Witold — 1-0 — Bydgoszcz POL
1976 — Lengyel, Levente vs Ermenkov, Evgenij — 1/2-1/2 — ?
7.Re1 — 31.6% (609 parties)
1975 — Petrosian, Tigran A. vs Balashov, Yuri — 1/2-1/2 — Erevan ch-URS
1975 — Portisch, Lajos vs Ljubojevic, Ljubomir — 1-0 — Milaan m sf
1975 — Tal, Mikhail vs Balashov, Yuri — 1/2-1/2 — Erevan ch-URS
1978 — Spassov, Liuben vs Garcia Martinez, Silvino — 1/2-1/2 — Buenos Aires olm
1978 — Meduna, Eduard vs Boensch, Uwe — 0-1 — It Halle GER
7.b3 — 24.6% (474 parties)
1975 — Mecking, Henrique vs Ljubojevic, Ljubomir — 1/2-1/2 — Manila Manila PHI
1975 — Korchnoi, Viktor vs Garcia Martinez, Silvino — 1-0 — Moscow RUS
1976 — Pfleger, Helmut, Dr. vs Karpov, Anatoly — 0-1 — Montilla Moriles
1976 — Jakobsen, Ole vs Mortensen, Erling — 1/2-1/2 — Aarhus DEN
1976 — Bisguier, Arthur B vs Berry, David — 1-0 — 06, Lone Pine
7.d3 — 2.8% (54 parties)
1988 — Broffman, Peter vs Scoones, Dan — 1/2-1/2 — Victoria CAN
1988 — Broffman, Peter vs Done, Stefan-Daniel — 1/2-1/2 — ?
1988 — Kristiansen, Jens vs Sorensen, Torben — 1-0 — Odense DEN
1988 — Lehmann, Karl-Heinz vs Foisor, Ovidiu-Doru — 0-1 — Berlijn open
1989 — Kestler, Hans-Guenther vs Werner, Marc — 1/2-1/2 — Duitsland tt