C98i - 14.a4 - Closed, Chigorin (1924)

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C98i — Closed, Chigorin (1924)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6 13.d5 Nd8 14.a4
Les coups candidats
14…Rb8 — 93.4% (734 parties)
Ambassadeurs : Zielinski, Sergej (19x), Grotnes, Nils Ragnar (12x), Rubil, Marko (12x), Tuma, Jiri (8x), Evans, Gordon R Dr (7x), Ould Ahmed, Samy (7x), Nickl, Klaus (6x), Kovachev, Daniel Jakobsen (6x)
14…Qb7 — 2.2% (17 parties)
Ambassadeurs : Rowies, Antoine Rene S. (3x), Nikolic, Zivoslav (2x), Struhar, Jan (2x), Bierwisch, Bernhard (2x), Stambulian, Arsen (2x), Popovic, Petar (1x), Jansa, Vlastimil (1x), Schwarz, Dusan (1x)
14…Bb7 — 1.5% (12 parties)
Ambassadeurs : Matulovic, Milan (2x), Govedarica, Radovan (1x), Rocha, Antonio (1x), Segal, Alexandru Sorin (1x), Gheorghiu, Florin (1x), Yanofsky, Daniel Abraham (1x), Pesantes, Carlos (1x), Asrian, Karen (1x)
14…b4 — 0.9% (7 parties)
Ambassadeurs : Christian Fernandes (1x), Roethel, Michel (1x), Walisiak, Roman (1x), Kovac, Imrich (1x), Kaiser, Helmut (1x), Bierwisch, Bernhard (1x), Innala, Heikki-Pekka (1x), Kiltti, Jyrki (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 14…Rb8 14…Qb7 14…Bb7 14…b4
<1800 21 86% — 14% —
1800-2200 270 97% 1% 1% 1%
2200-2600 341 93% 3% 1% 1%
2600+ 6 83% 17% — —
Évolution par décennie (% des parties)
Décennie N parties 14…Rb8 14…Qb7 14…Bb7 14…b4
1950s 8 88% — — 12%
1960s 9 100% — — —
1970s 52 87% — 6% —
1980s 52 92% 4% 2% 2%
1990s 88 88% 6% 1% 2%
2000s 275 94% 3% 1% 0%
2010s 268 96% 0% 1% 1%
2020s 34 97% 3% — —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
14…Rb8 96% 97% ▲ +1.2%
14…Qb7 0% 3% ▲ +2.6%
14…Bb7 1% 0% ▼ -1.1%
14…b4 1% 0% ▼ -0.7%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 5 parties
Carlsen, Magnus — 1 partie
Parties historiques
14…Rb8 — 93.4% (734 parties)
1953 — Medina-Garcia, Antonio vs Cuellar Gacharna, Miguel — 0-1 — Mar del Plata ARG
1953 — Hecht, Hans-Joachim vs Stoeckl, Ernst — 1/2-1/2 — Vienna AUT
1954 — Muller, Hans vs Volkmann, K — 1-0 — Dyckhoff mem-B corr5456
1955 — Evans, Larry vs Rossolimo, Nicolas — 0-1 — ?
1955 — Evans, Larry vs Rossolimo, Nicolas — 0-1 — USA
14…Qb7 — 2.2% (17 parties)
1982 — Jansa, Vlastimil vs Nikolic, Zivoslav — 1/2-1/2 — Vrnjacka Banja SRB
1989 — Popovic, Petar vs Nikolic, Zivoslav — 1/2-1/2 — Pljevlja
1992 — Graf, Christian vs Bierwisch, Bernhard — 1/2-1/2 — Germany ch-23 prel-8
1992 — Haese, Gerhard vs Bierwisch, Bernhard — 1-0 — Germany ch-23 prel-8
1998 — Svidler, Peter vs Piket, Jeroen — 1-0 — Tilburg NED
14…Bb7 — 1.5% (12 parties)
1970 — Gheorghiu, Florin vs Matulovic, Milan — 1-0 — Skopje MKD
1972 — Yanofsky, Daniel Abraham vs Pesantes, Carlos — 0-1 — Skopje olm
1978 — Matulovic, Milan vs Govedarica, Radovan — 1-0 — Odzaci
1984 — Rocha, Antonio vs Segal, Alexandru Sorin — 1/2-1/2 — Cabo Frio
1993 — Asrian, Karen vs Maros, Milan — 1/2-1/2 — Bratislava WchJM-U16
14…b4 — 0.9% (7 parties)
1955 — Christian Fernandes vs Roethel, Michel — 1/2-1/2 — Toulouse FRA
1988 — Walisiak, Roman vs Kovac, Imrich — 1-0 — ?
1992 — Kaiser, Helmut vs Bierwisch, Bernhard — 0-1 — FRG-ch21 corr8790
1998 — Innala, Heikki-Pekka vs Kiltti, Jyrki — 1-0 — Finland
2002 — Gorge, Eric vs Carrettoni, Angelo — 1/2-1/2 — ICCF Email