D14d - 7.e3 e6 - Exchange (1949)

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D14d — Exchange (1949)
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3 e6
Les coups candidats
Ambassadeurs : Meduna, Eduard (24x), Dao, Thien Hai (19x), Popov, Luben (16x), Knezevic, Milorad (15x), Gufeld, Eduard (13x), Ivkov, Borislav (11x), Rashkovsky, Nukhim N (11x), Zhao, Shengxin (11x)
Ambassadeurs : Meduna, Eduard (17x), Espig, Lutz (12x), Heinig, Wolfram, Dr. (12x), Dolmatov, Sergey (10x), Roeder, Frank (10x), Andersson, Ulf (10x), ? (10x), Husemann, Andreas (9x)
Ambassadeurs : Hector, Jonny (18x), Nenciulescu, Silviu (16x), Meduna, Eduard (10x), Sammalvuo, Tapani (6x), Grigore, George-Gabriel (6x), Krallmann, Matthias (5x), Luyks, Marinus (5x), Kreutzkamp, Reinhold (5x)
Ambassadeurs : Meduna, Eduard (12x), Lukacs, Peter (10x), Velikov, Petar (7x), Mokry, Karel (6x), Andersson, Ulf (6x), Gaprindashvili, Nona (5x), Torre, Eugenio (5x), Chekhov, Valery A (5x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8.Bd3 8.Bb5 8.Qb3 8.Ne5
<1800 278 20% 42% 19% 5%
1800-2200 2332 24% 37% 20% 8%
2200-2600 4305 44% 24% 19% 9%
2600+ 234 41% 11% 38% 6%
Évolution par décennie (% des parties)
Décennie N parties 8.Bd3 8.Bb5 8.Qb3 8.Ne5
1950s 45 38% 13% 40% 4%
1960s 147 54% 30% 12% 3%
1970s 235 37% 51% 5% 3%
1980s 775 29% 43% 5% 20%
1990s 1447 26% 40% 13% 13%
2000s 2108 28% 39% 18% 8%
2010s 2496 44% 19% 25% 4%
2020s 822 41% 12% 30% 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.Bd3 44% 41% ▼ -2.7%
8.Bb5 19% 12% ▼ -7.2%
8.Qb3 25% 30% ▲ +4.9%
8.Ne5 4% 6% ▲ +2.4%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 6 parties
Carlsen, Magnus — 4 parties
Botvinnik, Mikhail — 3 parties
Kasparov, Garry — 2 parties
Anand, Viswanathan — 2 parties
Gukesh D — 2 parties
Ju, Wenjun — 1 partie
Parties historiques
8.Bd3 — 34.7% (2806 parties)
1950 — Kottnauer, Cenek vs Rossolimo, Nicolas — 1/2-1/2 — Amsterdam NED
1950 — Al Husari, Zita Fatima vs Kottnauer, Cenek — 1/2-1/2 — Schiavno Zdroj
1951 — Flohr, Salo vs Botvinnik, Mikhail — 1/2-1/2 — Moskou ch-URS
1952 — Rapaka Samuel Paul vs Gligoric, Sofija — 1/2-1/2 — New York, NY USA
1952 — Garcia Vera, Oscar vs Patt Rubinstein, J. — 1/2-1/2 — Rosario ARG
8.Bb5 — 30.6% (2468 parties)
1950 — Rethy, Pal vs Pogats, Jozsef Jr. — 0-1 — Budapest HUN
1951 — Almiron, Martin Alejandro vs Ader Hausman, Walter — 0-1 — Santiago de Chile
1952 — Maderna, Carlos vs Ader, Darya — 1/2-1/2 — Mar del Plata ARG
1957 — Harnach Ruediger vs Boehnisch, Manfred — 1/2-1/2 — Ruhla
1957 — Puc, Stojan vs Vukovic, Sava — 1/2-1/2 — Sombor
8.Qb3 — 18.9% (1528 parties)
1950 — Chestnov, Vitaliy A. vs Furman, Semyon — 0-1 — Dzintari
1951 — Letelier Martner, Rene vs Jauregui, Carlos — 1-0 — Santiago de Chile
1952 — Litmanowicz, Wladyslaw vs Grynfeld, Izaak — 1/2-1/2 — Miedzyzdroje
1953 — Rabar, Braslav vs Trifunovic, Petar — 1/2-1/2 — Zagreb CRO
1953 — Petrosian, Tigran V. vs Smyslov, Vasily — 1/2-1/2 — Zurich SUI
8.Ne5 — 8.3% (671 parties)
1951 — Estrada, Walter vs Kalkstein, Rodolfo — 0-1 — San Rafael
1956 — Oren, Menachem vs Muehring, Willem — 1/2-1/2 — ?
1963 — Keene, Raymond D vs Basman, Michael John — 1-0 — Bognor Regis
1964 — Makagonov, Aleksander vs Makienko, Vladislav — 1-0 — USSR
1967 — Kusinski, Bogdan vs Niemand, Gerhard — 1-0 — EU-ch M corr