B22h - 4…Nc6 - Alapin (1954)

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B22h — Alapin (1954)
1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nc6
Les coups candidats
Ambassadeurs : Shishkin, Vadim (25x), ? (19x), Jahn, Constanze (18x), Markus, Roland (17x), Lardot, Derik (16x), Dolezal, Radoslav (16x), Vysochin, Spartak (16x), Kalod, Radek (13x)
5.dxc5 — 5.6% (648 parties)
Ambassadeurs : Schmittdiel, Eckhard (10x), Kowalczyk, Rafal (8x), Sveshnikov, Evgeny (7x), Roeder, Frank (7x), Tuovinen, Jukka (6x), Ferron Garcia, Carlos (5x), Schwebel, Markus (5x), Acs, Peter (4x)
5.Be3 — 3.4% (394 parties)
Ambassadeurs : Tydecks, Hermann (4x), Stevic, Hrvoje (4x), Csikos, Mihaly (4x), Palkovi, Jozsef (3x), Korenova, Martina (3x), Fett, Sabine (3x), Dovzik, Juri (3x), Fouchet, Guy (3x)
5.Na3 — 0.3% (39 parties)
Ambassadeurs : Kovacs, Zoltan (2x), dr. Rakaczki, Zoltan (2x), Blatny, Pavel (1x), Kiss, Attila (1x), Magrini, Riccardo (1x), Toth, Bela (1x), Panic, Branko (1x), Zeljko, Tadej (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.Nf3 5.dxc5 5.Be3 5.Na3
<1800 900 90% 5% 4% 1%
1800-2200 6009 90% 6% 3% 0%
2200-2600 3347 92% 6% 3% 0%
2600+ 29 93% 3% 3% —
Évolution par décennie (% des parties)
Décennie N parties 5.Nf3 5.dxc5 5.Be3 5.Na3
1950s 27 78% 19% 4% —
1960s 18 61% 39% — —
1970s 135 71% 26% 1% 1%
1980s 399 91% 8% 1% 0%
1990s 2775 89% 6% 5% 0%
2000s 3503 90% 6% 4% 0%
2010s 3647 92% 5% 3% 0%
2020s 1132 95% 3% 2% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.Nf3 92% 95% ▲ +3.5%
5.dxc5 5% 3% ▼ -1.9%
5.Be3 3% 2% ▼ -1.1%
5.Na3 0% 0% -0.3%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 5 parties
Kramnik, Vladimir — 1 partie
Kasparov, Garry — 1 partie
Ju, Wenjun — 1 partie
Hou, Yifan — 1 partie
Parties historiques
5.Nf3 — 90.5% (10536 parties)
1950 — Michel, Paul vs Eros, Plata — 1-0 — Vienna AUT
1951 — Kozomara, Vlado vs Bertok, Mario Jr. — 1/2-1/2 — Ljubljana ch YUG
1953 — Abhishek Mari S vs Bogdanovic, Rajko — 1/2-1/2 — Zagreb CRO
1953 — Dodero, Emilio vs Beretta, Hector — 1/2-1/2 — Buenos Aires ARG
1953 — Padevsky, Nikola vs Herrmann, Ludwig — 1-0 — Sofia BUL
5.dxc5 — 5.6% (648 parties)
1954 — Eken, Max vs Kolnik, Moss — 0-1 — Durban
1954 — Canal, Esteban vs Eken, Max — 1-0 — Zurich SUI
1955 — Suboticanec, Drazen vs Franolic, Toma — 1-0 — Zagreb CRO
1957 — Canal, Esteban vs Fletzer, Gino — 1-0 — San Benedetto
1958 — Puig, Pedro vs Deulovol, Paulino — 1-0 — Catalunya
5.Be3 — 3.4% (394 parties)
1957 — Basjuni, Sad Zaglul vs Al Husari, Zita Fatima — 0-1 — Sofia zt Sofia BUL
1977 — Crouch, Colin S vs Large, Peter G — 1/2-1/2 — Piccadilly Hotel London
1979 — Sultan vs Toh, Joseph — 0-1 — Singapore SIN
1982 — Bajovic, Milan vs Nogueiras Santiago, Jesus — 1/2-1/2 — Plovdiv BUL
1986 — Bukal, Vladimir Jr. vs Putzbach, Gerd — 1-0 — Rheinland-Pfalz GER
5.Na3 — 0.3% (39 parties)
1975 — Magrini, Riccardo vs Toth, Bela — 0-1 — Reggio Emilia ITA
1987 — Blatny, Pavel vs Kiss, Attila — 1/2-1/2 — Hajduszoboszlo
1992 — Daniliuk, Sergey vs Abramov, Aleksander — 0-1 — Smolensk RUS
1992 — Doncevic, Dario vs Suba, Mihai — 0-1 — Palma de Majorca ESP
1993 — Hashizume, PF. vs Schmid, Shahanah — 0-1 — Bratislava SVK