C99i - 14.a3 - Closed, Chigorin (1940)

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C99i — Closed, Chigorin (1940)
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 cxd4 13.cxd4 Nc6 14.a3
Les coups candidats
14…Bd7 — 53.1% (314 parties)
Ambassadeurs : Zielinski, Sergej (12x), Pott, Brian (7x), Milde, Lars (5x), Carrizo, Jose Andres (4x), O`Brien, Glenn (4x), Gerber, K (3x), Dorfman, Iossif (3x), Espinoza Palomino, Willyam (3x)
14…exd4 — 31.5% (186 parties)
Ambassadeurs : Zielinski, Sergej (6x), Pasti, Aron (5x), Tal, Mikhail (3x), Suetin, Alexey S (2x), Jansa, Vlastimil (2x), Kholmov, Ratmir D (2x), Avotins, Maigonis (2x), Brzeszkiewicz, Edmund (2x)
14…Nxd4 — 5.2% (31 parties)
Ambassadeurs : Kuuse, Klaus (2x), Roselli, Juan Pablo (1x), Vazquez, Lautaro Tomas (1x), Dost, Andreas (1x), Heigl, Rudolf (1x), Polgar, Judit (1x), Kamsky, Gata (1x), Aum Pethani (1x)
14…a5 — 3.2% (19 parties)
Ambassadeurs : Sakharov, Yuri N (1x), Yanitsky, Yury (1x), Palciauskas, Victor V (1x), Sarosy, Zoltan L (1x), Robichaud, Louis (1x), Mills, Ken (1x), Wisloff-Nilssen, Sven (1x), Gausel, Einar J (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 14…Bd7 14…exd4 14…Nxd4 14…a5
<1800 43 65% 19% 5% 5%
1800-2200 219 62% 26% 5% 2%
2200-2600 240 45% 40% 5% 4%
2600+ 10 30% 50% 20% —
Évolution par décennie (% des parties)
Décennie N parties 14…Bd7 14…exd4 14…Nxd4 14…a5
1950s 6 83% — — —
1960s 15 47% 27% — 7%
1970s 30 40% 33% — 3%
1980s 19 47% 21% 5% 5%
1990s 18 50% 17% 17% 6%
2000s 170 62% 21% 8% 4%
2010s 276 53% 37% 4% 2%
2020s 57 39% 49% 4% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
14…Bd7 53% 39% ▼ -13.9%
14…exd4 37% 49% ▲ +12.5%
14…Nxd4 4% 4% -0.5%
14…a5 2% 4% ▲ +1.3%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Anand, Viswanathan — 2 parties
Kramnik, Vladimir — 1 partie
Hou, Yifan — 1 partie
Parties historiques
14…Bd7 — 53.1% (314 parties)
1950 — Watzal, Dennis vs Madsen, Svend Aage — 1-0 — ?
1952 — Vasconcelos, Fernando vs Mangini, Jose Henrique de Mello — 1/2-1/2 — Rio de Janeiro BRA
1952 — Rabar, Braslav vs Mangini, Jose Henrique de Mello — 1-0 — Rio de Janeiro BRA
1955 — Puc, Stojan vs Milic, Borislav — 1/2-1/2 — Ljubljana
1958 — Abiolla James vs Bouna, Safwan younes — 1-0 — Munich GER
14…exd4 — 31.5% (186 parties)
1965 — Johansson, Martin 1979 vs Nilsson, Zandor — 0-1 — Sarspelet om SM titeln
1968 — Tal, Mikhail vs Averbakh, Yuri L — 1/2-1/2 — Alma Ata KAZ
1968 — Tal, Mikhail vs Vasiukov, Evgeni — 0-1 — URS
1969 — Tal, Mikhail vs Kholmov, Ratmir D — 1-0 — Moskou ch-URS
1970 — Dely, Peter vs Bak, Istvan — 1/2-1/2 — Budapest HUN
14…Nxd4 — 5.2% (31 parties)
1985 — Roselli, Juan Pablo vs Vazquez, Lautaro Tomas — 0-1 — La Hora
1993 — Aum Pethani vs ? — 0-1 — Leiden NED
1996 — Polgar, Judit vs Kamsky, Gata — 1/2-1/2 — Dos Hermanas ESP
1999 — Dost, Andreas vs Heigl, Rudolf — 1/2-1/2 — Bayern
2001 — Bubir, Alex Nikolaevich vs Zalai, Mihaly Dr. — 1/2-1/2 — IECG
14…a5 — 3.2% (19 parties)
1967 — Sakharov, Yuri N vs Yanitsky, Yury — 1-0 — Kiev UKR
1976 — Palciauskas, Victor V vs Sarosy, Zoltan L — 1-0 — NAICCC II corr
1983 — Robichaud, Louis vs Mills, Ken — 1-0 — CAN
1993 — Wisloff-Nilssen, Sven vs Gausel, Einar J — 0-1 — Tromsoe
2000 — Abdel Aziem, Ramadan vs Sarwat, Walaa — 1-0 — Cairo EGY