D88c - 11…Na5 - Classical Exchange, Main Line (1948)

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D88c — Classical Exchange, Main Line (1948)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4 11.cxd4 Na5
Les coups candidats
Ambassadeurs : Witkowski, Stefan (25x), Krueger, Hilmar (8x), Kirov, Nino (7x), Bernal Varela, Nelson (5x), Sliwa, Bogdan (4x), Yanofsky, Daniel Abraham (4x), Knaak, Rainer (4x), Mallee, Ralph (4x)
12.Rc1 — 5.9% (73 parties)
Ambassadeurs : Witkowski, Stefan (3x), Pachman, Ludek (2x), Kirov, Nino (2x), Mallee, Ralph (2x), Brzozka, Stefan (1x), Owens, Brian (1x), Santasiere, Anthony (1x), Hoensch, Irene (1x)
12.Bb3 — 2.0% (25 parties)
Ambassadeurs : Pollok, Joerg (1x), Kemeny, Matthias (1x), Hoch, Daniel (1x), Koch, Christian (1x), Sebih, Kamel (1x), Abdullah, Mansoor (1x), Freslon, Morgan (1x), Roblette, Yves (1x)
12.Bd5 — 1.0% (12 parties)
Ambassadeurs : Thormar, Stefan (1x), Magnusson, Olafur (1x), Davis, Colin J (1x), Steward, Julian (1x), Sorensen, Michael D. F. (1x), Hansen, Rudy Neergaard (1x), Singher, Jean-Pierre (1x), Urquhart, Ed (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 12.Bd3 12.Rc1 12.Bb3 12.Bd5
<1800 86 73% 20% 6% 1%
1800-2200 569 91% 5% 2% 2%
2200-2600 230 93% 4% 1% 0%
2600+ 2 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 12.Bd3 12.Rc1 12.Bb3 12.Bd5
1950s 49 92% 8% — —
1960s 31 94% 3% — —
1970s 93 86% 13% — 1%
1980s 95 94% 1% 3% 1%
1990s 251 93% 5% 1% 0%
2000s 357 85% 8% 3% 1%
2010s 327 92% 4% 2% 1%
2020s 39 92% — 3% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
12.Bd3 92% 92% +0.3%
12.Rc1 4% 0% ▼ -3.7%
12.Bb3 2% 3% ▲ +0.7%
12.Bd5 1% 3% ▲ +1.6%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Aleksandr — 1 partie
Karpov, Anatoly — 1 partie
Parties historiques
12.Bd3 — 89.9% (1116 parties)
1950 — Kieninger, Georg vs Machate, Gottlieb — 1/2-1/2 — FRG-ch Bad Pyrmont GER
1950 — Enevoldsen, Harald vs Flores, Ranz Kirby Anthony — 0-1 — Dubrovnik olm
1951 — Barden, Leonard vs Yanofsky, Daniel Abraham — 1/2-1/2 — Hastings ENG
1951 — Barden, Leonard vs Yanofsky, Daniel Abraham — 1/2-1/2 — Hastings ENG
1951 — Troianescu, Octav vs Molnar, Imre — 1/2-1/2 — Bucharest ROU
12.Rc1 — 5.9% (73 parties)
1955 — Kozma, Julius vs Witkowski, Stefan — 0-1 — Prague CZE
1956 — Owens, Brian vs Santasiere, Anthony — 1/2-1/2 — Oklahoma City, OK USA
1957 — Brzozka, Stefan vs Witkowski, Stefan — 1/2-1/2 — Warsaw POL
1957 — Hoensch, Irene vs Ladanyike-Karakas, Eva — 1/2-1/2 — HUN
1966 — Filep, Tibor vs Witkowski, Stefan — 0-1 — Poland
12.Bb3 — 2.0% (25 parties)
1987 — Hoch, Daniel vs Koch, Christian — 0-1 — Muenster GER
1988 — Sebih, Kamel vs Abdullah, Mansoor — 1-0 — Thessaloniki GRE
1989 — Pollok, Joerg vs Kemeny, Matthias — 0-1 — ?
1990 — Freslon, Morgan vs Roblette, Yves — 1/2-1/2 — Val Maubuee open
1995 — Dinh, Van Quy vs Tran, Vinh Loc — 0-1 — Hanoi
12.Bd5 — 1.0% (12 parties)
1973 — Thormar, Stefan vs Magnusson, Olafur — 1/2-1/2 — Icelandic Chess Cham
1988 — Davis, Colin J vs Steward, Julian — 1-0 — Adelaide AUS
1994 — Sorensen, Michael D. F. vs Hansen, Rudy Neergaard — 1/2-1/2 — Aarhus DEN
2002 — Singher, Jean-Pierre vs Urquhart, Ed — 1/2-1/2 — Montreal CAN
2007 — Mukashev, Assan vs Busin, Pavel — 1-0 — Pavlodar