D47m - 9.a3 - Meran, Wade (1952)

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D47m — Meran, Wade (1952)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7 9.a3
Les coups candidats
9…Bd6 — 35.7% (438 parties)
Ambassadeurs : Pravec, Ladislav (23x), Dreev, Aleksey (7x), Shirov, Alexei (7x), Szabo, Vilmos (7x), Gelfand, Boris (6x), Khenkin, Igor (5x), Mueller-Alves, Martin (4x), Pecka, Josef (4x)
9…b4 — 34.5% (423 parties)
Ambassadeurs : Gelfand, Boris (13x), Karpov, Anatoly (10x), Dreev, Aleksey (10x), Kramnik, Vladimir (9x), Shirov, Alexei (8x), Anand, Viswanathan (7x), Bareev, Evgeny (6x), Pagano, Marcelo (5x)
9…a6 — 23.3% (286 parties)
Ambassadeurs : Pravec, Ladislav (6x), Forintos, Gyozo V (3x), Borda, Lajos (3x), Horvath, Csaba (2x), Tukmakov, Vladimir B (2x), Gligoric, Svetozar (1x), Sanguineti, Raúl Carlos (1x), Liebisch, Dieter (1x)
9…a5 — 4.3% (53 parties)
Ambassadeurs : Szily, Jozsef (2x), Paramos Dominguez, Roberto (2x), Pinter, Jozsef (2x), Kottnauer, Cenek (1x), Portisch, Lajos (1x), Furman, Semyon (1x), Nei, Iivo (1x), Naepfer, Anna (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Bd6 9…b4 9…a6 9…a5
<1800 55 35% 27% 27% 2%
1800-2200 426 35% 28% 30% 4%
2200-2600 545 39% 35% 20% 6%
2600+ 103 34% 58% 7% 1%
Évolution par décennie (% des parties)
Décennie N parties 9…Bd6 9…b4 9…a6 9…a5
1950s 4 — — 50% 50%
1960s 7 14% — 71% 14%
1970s 5 20% — 60% 20%
1980s 17 — 65% 18% 18%
1990s 175 6% 64% 23% 5%
2000s 347 22% 43% 27% 5%
2010s 543 51% 21% 23% 3%
2020s 129 55% 29% 12% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Bd6 51% 55% ▲ +3.8%
9…b4 21% 29% ▲ +7.9%
9…a6 23% 12% ▼ -11.2%
9…a5 3% 2% ▼ -0.6%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Kramnik, Vladimir — 10 parties
Anand, Viswanathan — 9 parties
Ding, Liren — 4 parties
Carlsen, Magnus — 2 parties
Parties historiques
9…Bd6 — 35.7% (438 parties)
1961 — Gligoric, Sofija vs Trifunovic, Petar — 1/2-1/2 — Bled SLO
1978 — Beliavsky, Alexander G vs Platonov, Igor — 1-0 — Kiev UKR
1993 — Romo, C vs Gil Capape, Javier — 0-1 — AUEQ5 TERUEL - OLIVA
1994 — Koniushkov, Igor vs Mukhametov, Eldar — 1-0 — St Petersburg RUS
1994 — Koniushkov, Igor vs Mukhametov, Eldar — 1-0 — St Petersburg RUS
9…b4 — 34.5% (423 parties)
1987 — Paehtz, Thomas vs Sveshnikov, Evgeny — 0-1 — Bulgaria
1987 — Paehtz, Thomas vs Sveshnikov, K. — 0-1 — Varna BUL
1988 — Basin, Leonid vs Savchenko, Stanislav — 1/2-1/2 — Simferopol UKR
1988 — Basin, Leonid vs Savchenko, Stanislav — 1/2-1/2 — Simferopol UKR
1988 — Gelfand, Boris vs Oll, Lembit — 1/2-1/2 — Klaipeda
9…a6 — 23.3% (286 parties)
1952 — Teschner, Rudolf vs Mueller, Paul — 1-0 — Basel SUI
1955 — Gligoric, Svetozar vs Sanguineti, Raúl Carlos — 1-0 — Buenos Aires ARG
1960 — Averbakh, Yuri L vs Nei, Iivo — 1/2-1/2 — Odessa UKR
1963 — Forintos, Gyozo V vs Barczay, Laszlo — 1/2-1/2 — Budapest HUN
1964 — Abramovich Furman, Semyon vs Khasin, Abram — 0-1 — Moscow RUS
9…a5 — 4.3% (53 parties)
1952 — Kottnauer, Cenek vs Szily, Jozsef — 0-1 — Budapest HUN
1959 — Furman, Semyon vs Nei, Iivo — 1/2-1/2 — Tallinn EST
1962 — Portisch, Lajos vs Szily, Jozsef — 1/2-1/2 — Budapest HUN
1977 — Forintos, Gyozo V vs Supancic, Darko — 1-0 — Maribor
1980 — Benjamin, Joel vs Arnason, Jon L — 1/2-1/2 — New York, NY USA