E12d - 4.a3 - Petrosian Variation (1967)

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E12d — Petrosian Variation (1967)
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3
Les coups candidats
Ambassadeurs : Agathiyan Susil (85x), Bakheet Farag (75x), Raessler, Arndt (54x), Karpov, Anatoly (48x), Browne, Walter Shawn (44x), Rozentalis, Eduardas (43x), ? (41x), Romanishin, Oleg M (40x)
Ambassadeurs : Bakheet Farag (71x), Cebalo, Miso (30x), Pogorelov, Ruslan (30x), ? (30x), Tunik, Gennady (27x), Khenkin, Igor (26x), Cramling, Pia (22x), Lputian, Smbat (21x)
Ambassadeurs : Cebalo, Miso (15x), Timman, Jan H (14x), Csom, Istvan (13x), Browne, Walter Shawn (12x), Bakheet Farag (11x), Van der Wiel, John T.H. (10x), Aannevik, Bjarne (10x), Yemelin, Vasily (9x)
4…d5 — 2.5% (641 parties)
Ambassadeurs : Zagrebelny, Sergey (16x), Rozentalis, Eduardas (14x), Nikolic, Predrag (14x), Schneider, Lars-Ake (11x), Sunye Neto, Jaime (11x), Siigur, Jüri (8x), Gruen, Gerd-Peter (5x), Browne, Walter Shawn (5x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Bb7 4…Ba6 4…c5 4…d5
<1800 977 75% 16% 3% 2%
1800-2200 8390 73% 18% 3% 2%
2200-2600 13030 63% 26% 7% 3%
2600+ 907 66% 27% 4% 2%
Évolution par décennie (% des parties)
Décennie N parties 4…Bb7 4…Ba6 4…c5 4…d5
1950s 3 100% — — —
1960s 36 78% 6% 6% 3%
1970s 290 68% 2% 16% 10%
1980s 2532 58% 21% 13% 7%
1990s 4098 64% 25% 6% 3%
2000s 7638 65% 25% 5% 2%
2010s 8695 72% 21% 3% 2%
2020s 2427 80% 15% 1% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Bb7 72% 80% ▲ +8.3%
4…Ba6 21% 15% ▼ -5.9%
4…c5 3% 1% ▼ -1.8%
4…d5 2% 1% -0.2%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 10 parties
Anand, Viswanathan — 10 parties
Karpov, Anatoly — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Hou, Yifan — 10 parties
Tal, Mikhail — 9 parties
Botvinnik, Mikhail — 5 parties
Ju, Wenjun — 5 parties
Gukesh D — 3 parties
Ding, Liren — 2 parties
Karpov, Aleksandr — 1 partie
Parties historiques
4…Bb7 — 67.7% (17422 parties)
1950 — Primavera, Giuseppe vs Napolitano, Mario — 0-1 — Sorrento ch ITA
1951 — Millar, Charles F vs Anderson Harris — 0-1 — Vancouver
1959 — Rodriguez, Alberto vs Visconti, Adriano — 1-0 — Argentina
1962 — Bolbochan, Julio vs Golombek, Harry — 1-0 — Varna BUL
1962 — Bolbochan, Jacobo vs Golombek, Harry — 1-0 — Varna BUL
4…Ba6 — 22.1% (5673 parties)
1968 — Trikaliotis, Georgios vs Sanguinetti, Raul — 0-1 — Lugano SUI
1968 — Trikaliotis, Georgios vs Sanguinetti, Ricardo — 0-1 — Lugano olm
1974 — Radosevic, Milos vs Hock, Martin — 0-1 — Ebersberg
1975 — Velandia, Norberto vs Rodriguez Garcia, Jose Sebastian — 0-1 — ?
1976 — Malfussi Francisco Delfin vs Braz De Araujo, Daniel — 1-0 — ?
4…c5 — 5.1% (1319 parties)
1968 — Petrosian, Tigran V. vs Larsen, Bent Ravn — 1-0 — Palma de Majorca ESP
1969 — De Lange, Daan vs Thorbergsson, Freysteinn — 1/2-1/2 — Nordic-ch Lidkoping SWE
1970 — Poch, Branislav vs Palermo, Vicente — 1-0 — Buenos Aires ARG
1971 — Platonov, Igor vs Gurgenidze, Bukhuti — 1-0 — USSR
1973 — Yuferov, Sergey N vs Abramov, Roman — 1-0 — Minsk BLR
4…d5 — 2.5% (641 parties)
1966 — Sherwin, James T vs Evans, Larry — 0-1 — Kingston CAN op
1970 — Bisguier, Arthur B vs Villarroel, Geber — 1-0 — Caracas VEN
1972 — Enklaar, Bert vs Garcia Martinez, Silvino — 1-0 — Wijk aan Zee NED
1972 — Bisguier, Arthur B vs Commons, Kim S — 0-1 — Lone Pine, CA USA
1973 — Pytel, Krzysztof vs Garcia Martinez, Silvino — 1/2-1/2 — Hastings ENG