B23t — Closed Grand Prix
1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.Bc4
Eval: [-0.44]
Les coups candidats
Ambassadeurs : Boronyak, Arpad (27x), Weeramantry, Sunil (21x), Erlbeck, Peter (21x), Horvath, Gabor (18x), Gaudineau, Eric (17x), Van Schaardenburg, Mark (15x), Bulgarini Torre, Marco (13x), Deus Filho, Joaquim de (13x)
5…d6 — 15.9% (1408 parties)
Ambassadeurs : Boronyak, Arpad (8x), Erlbeck, Peter (6x), Garcia Wood, Cristian (5x), Weeramantry, Sunil (5x), Kugelmann, Werner (5x), Horvath, Gabor (4x), Hlavac, Rudolf (4x), Gerbelli Neto, Eduardo (4x)
5…a6 — 2.8% (252 parties)
Ambassadeurs : Schwarz, Dusan (2x), Van Steenwinckel, Iris (2x), Nogrady, Vilmos (2x), Kleinschroth, Roland (2x), Mueller, Axel, Dr. (2x), Januszewski, Piotr (2x), Troianescu, Octav (1x), Opocensky, Karel (1x)
5…Na5 — 0.7% (64 parties)
Ambassadeurs : Drvota, Antonin (1x), Alster, Ladislav (1x), Cleal, John (1x), Leoncini, Mario (1x), Medina Villarreal, Haim Jaziel (1x), Vella, Benjamin (1x), Ljubisavljevic, Zivojin Z (1x), Padevsky, Nikola (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…e6 5…d6 5…a6 5…Na5
<1800 405 77% 18% 2% 0%
1800-2200 4178 79% 17% 3% 1%
2200-2600 2260 84% 13% 2% 1%
2600+ 7 86% 14%
Évolution par décennie (% des parties)
Décennie N parties 5…e6 5…d6 5…a6 5…Na5
1930s 1 100%
1940s 3 67% 33%
1950s 10 50% 40% 10%
1960s 41 49% 46% 5%
1970s 202 67% 27% 5% 1%
1980s 337 77% 19% 3% 1%
1990s 2156 80% 15% 3% 1%
2000s 3229 83% 14% 2% 1%
2010s 2471 77% 17% 3% 1%
2020s 420 80% 12% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…e6 77% 80% ▲ +3.0%
5…d6 17% 12% ▼ -5.1%
5…a6 3% 5% ▲ +1.5%
5…Na5 1% 0% ▼ -1.0%
Joueurs célèbres
Champions du monde dans cette position
Euwe, Max — 1 partie
Smyslov, Vladimir — 1 partie
Kramnik, Vladimir — 1 partie
Anand, Viswanathan — 1 partie
Parties historiques
5…e6 — 79.5% (7056 parties)
1941 — Euwe, Max vs Muhring, Willem Jan — 1/2-1/2 — NED
1948 — Habermann, Ewald vs Wolk, Sigmund — 1-0 — Esslingen
1950 — Poulsen, Christian vs Reshevsky, Samuel — 0-1 — Dubrovnik CRO
1952 — Roethel, Michel vs Rometti, Nicola Barbatto — 0-1 — Charleville Mezieres
1953 — Raetsch, Heinz vs Muehlberg, Siegfried — 0-1 — Brandenburg/Havel
5…d6 — 15.9% (1408 parties)
1931 — Ipata, Pedro vs Villegas, Benito — 0-1 — Buenos Aires ARG
1954 — Herter, Eberhard vs Pilnik, Herman — 0-1 — Stuttgart GER
1956 — Scheipl, Ralf vs Wolk, Sigmund — 0-1 — Hitzacker
1957 — Plater, Kazimierz vs Bogdanovic, Rajko — 1-0 — Szczawno Zdroj
1959 — Weise, Dieter vs Mohrlok, Dieter — 1-0 — Nuerenberg GER
5…a6 — 2.8% (252 parties)
1948 — Troianescu, Octav vs Opocensky, Karel — 1/2-1/2 — Karlovy Vary
1953 — Wesselowski, Leo vs Conen, Friedrich — 1-0 — Soest NED
1967 — Baroudi, Ziad vs Blackstone, John — 0-1 — San Francisco, Ca
1969 — Levy, David N L vs Visier Segovia, Fernando — 1/2-1/2 — Praia da Rocha
1970 — Pandolfini, B vs Evans, Larry — 1/2-1/2 — Reno national op
5…Na5 — 0.7% (64 parties)
1977 — Drvota, Antonin vs Alster, Ladislav — 1-0 — Decin CZE
1978 — Ljubisavljevic, Zivojin Z vs Padevsky, Nikola — 1/2-1/2 — 4. Gosa Smederevska Palanka Y
1980 — Medina Villarreal, Haim Jaziel vs Vella, Benjamin — 1-0 — La Valetta
1989 — Cleal, John vs Leoncini, Mario — 1/2-1/2 — Catania
1991 — Mitkov, Nikola vs Robatsch, Karl — 1/2-1/2 — Vienna AUT