D86i - 9.O-O - Classical Exchange, Simagin (1952)

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D86i — Classical Exchange, Simagin (1952)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 b6 9.O-O
Les coups candidats
9…Bb7 — 86.7% (143 parties)
Ambassadeurs : Douven, Rudy (4x), Hadi, Adrian (3x), Sajtar, Jaroslav (3x), Kindermann, Stefan (3x), Ohse, Andreas, Dr. (3x), Pachman, Ludek (2x), Lehmann, Heinz (2x), Simagin, Vladimir (2x)
Ambassadeurs : Kalnins, Aleksandrs Alans (1x), Klovans, Janis (1x), Maier, Peter (1x), Gikas, Andreas Basilius (1x), Razuvaev, Yuri S (1x), Kupreichik, Viktor D (1x), Nicoara, Malina (1x), Leconte, Maria (1x)
9…Ba6 — 5.5% (9 parties)
Ambassadeurs : Sliwa, Bogdan (1x), Robatsch, Karl (1x), Buj, Pablo (1x), Sanguinetti, Raul (1x), Kool, Gerard (1x), Lehmann, Heinz (1x), Debarnot, Roberto (1x), Pilnick, Carl (1x)
9…e6 — 1.2% (2 parties)
Ambassadeurs : Maly, Marek (1x), Seidl, Stepan (1x), Babychuk, Vladimir (1x), Williams, Rufus H. (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Bb7 9…Nc6 9…Ba6 9…e6
<1800 8 75% — 12% 12%
1800-2200 40 80% 10% 8% 2%
2200-2600 73 89% 7% 3% —
Évolution par décennie (% des parties)
Décennie N parties 9…Bb7 9…Nc6 9…Ba6 9…e6
1950s 25 92% — 8% —
1960s 9 78% 11% 11% —
1970s 26 88% 4% 4% —
1980s 14 93% 7% — —
1990s 29 100% — — —
2000s 34 85% 9% 6% —
2010s 23 65% 17% 13% 4%
2020s 5 80% — — 20%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Bb7 65% 80% ▲ +14.8%
9…Nc6 17% 0% ▼ -17.4%
9…Ba6 13% 0% ▼ -13.0%
9…e6 4% 20% ▲ +15.7%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 2 parties
Kasparov, Garry — 1 partie
Parties historiques
9…Bb7 — 86.7% (143 parties)
1950 — Moiseev, Oleg vs Simagin, Vladimir — 0-1 — URS-ch sf Tula
1950 — Moiseev, Aleksandr vs Simagin, Vladimir — 0-1 — Tula RUS
1951 — Perez Perez, Francisco Jose vs Pilnik, Herman — 0-1 — Madrid ESP
1952 — Szentkiralyi Toth, Vince vs Trifunovic, Petar — 0-1 — Rio de Janeiro BRA
1952 — Trifunovic, Petar vs Evans, Larry — 1/2-1/2 — Helsinki olm
9…Nc6 — 6.1% (10 parties)
1963 — Kalnins, Aleksandrs Alans vs Klovans, Janis — 0-1 — ?
1971 — Razuvaev, Yuri S vs Kupreichik, Viktor D — 1-0 — USSR
1988 — Maier, Peter vs Gikas, Andreas Basilius — 0-1 — Liechtenstein
2000 — Flear, Christine vs Leconte, Jean-Olivier — 0-1 — Vichy FRA
2002 — Nicoara, Malina vs Leconte, Maria — 1-0 — France
9…Ba6 — 5.5% (9 parties)
1957 — Sliwa, Bogdan vs Robatsch, Karl — 1/2-1/2 — It Gotha GER
1958 — Buj, Pablo vs Sanguinetti, Raul — 0-1 — Buenos Aires ARG
1963 — Kool, Gerard vs Lehmann, Heinz — 0-1 — Amsterdam NED
1972 — Debarnot, Roberto vs Pilnick, Carl — 0-1 — Buenos Aires ARG
2006 — Hempson, Peter W vs Rety, John — 0-1 — Paignton
9…e6 — 1.2% (2 parties)
2013 — Maly, Marek vs Seidl, Stepan — 1/2-1/2 — Kouty nad Desnou
2020 — Babychuk, Vladimir vs Williams, Rufus H. — 1-0 — ICCF