B54a — Sicilian: Open, 2…d6

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 *   ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bN
bB
bQ
bK
bB
bN
bR
bP
bP
bP
bP
bP
bP
bP
Case forte (2v0)
Case forte (2v1)
wN
wPPion central
wP
wP
wP
wP
wP
wP
wR
wN
wBFou actif — mobilité 5
wQ
wK
wBFou actif — mobilité 5
wR
abcdefgh
Plans. Nc3 (Développer b1 — 96 % des parties) ; f3 (Poussée — 2 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wB
wK
wQ
wB
wN
wR
wP
wP
wP
wP
wP
wP
wP
wN
bP
bP
bP
bP
bP
bP
bP
bR
bN
bB
bK
bQ
bBFou actif — mobilité 5
bN
bR
hgfedcba
Plans. ...Nf6 (Développer g8 — 98 % des parties).
Avantages
Faiblesses
Diagonale active
Plans

Structure de pions
♔ Blancs ♚ Noirs
Pions doublés
Pions isolés
Arriérés
Chaînes ● e7→d6
Passés
Majorité ● aile dame 3v2
Cases
♔ Blancs ♚ Noirs
Cases fortes ● b5 (2v0), ● f5 (2v1)
Cases faibles
Centre ● d4 (1v0), ● d5 (1v0) ● e5 (1v0)
Colonnes et diagonales
♔ Blancs ♚ Noirs
Semi-ouvertes ● d ● c
Pièces
♔ Blancs ♚ Noirs
Bc1 ● Bc1 Non développé (mob. 5)
Bf1 ● Bf1 Non développé (mob. 5)
Bc8 ● Bc8 Non développé (mob. 5)
Bf8 ● Bf8 Non développé (mob. 0)
Paire de fous ● Oui ● Oui
Non développées 5 (● b1, ● c1, ● f1, ● a1, ● h1) 6 (● b8, ● g8, ● c8, ● f8, ● a8, ● h8)
Sécurité du roi
♔ Blancs ♚ Noirs
Statut ● Au centre ● Au centre
Droits de roque O-O / O-O-O O-O / O-O-O
Thèmes
♔ Blancs ♚ Noirs
Phase Ouverture
Centre mobile
Ruptures ● e4-e5 ● …d6-d5, ● …f7-f5
Partie
1928 Bad Kissingen – Round 8 – Capablanca, Jose – 1-0 – Yates, Frederic D – G45
1. e4 c5 2. Ne2 d6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Nc3 Nf6 7. Be2 O-O 8. O-O Nbd7 9. Be3 Nc5 10. f3 Bd7
1961 GBR Ch 48th – Round 2.7 – Aitken, James – 1/2-1/2 – Bennett, Patrick – G17
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 5. g3 Bg7 6. Bg2 Nf6 7. O-O O-O 8. c4 Qb6 9. Nb3 Bg4 10. Qc2 Nc6
1962 Mar del Plata KIM – Round 8 – Abad Fernandez, Dino – 1/2-1/2 – Wexler, Bernardo – G22
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be2 Nh6 7. O-O O-O 8. Be3 Nc6 9. Kh1 f5 10. exf5 Nxf5

B54a — Open (1928)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4
Les coups candidats
Ambassadeurs : ? (1143x), Sherwood, Russell (711x), Agathiyan Susil (425x), Daurelle, Herve (396x), Jansa, Vlastimil (366x), Tal, Mikhail (291x), Polugaevsky, Lev (236x), Lovakovic, Franjo (213x)
Ambassadeurs : Sánchez Carol, Jesús (21x), Almeraya, Eduardo (16x), Zornow, Thomas (13x), Kovarik, Oto (11x), Tal, Mikhail (8x), Jansa, Vlastimil (8x), Gufeld, Eduard (7x), De La Fuente Arguelles, Isidoro (7x)
Ambassadeurs : Achenbach, Manfred (20x), Mariano, Jose Carlos N (17x), Orgovan, Sandor (14x), Ilincic, Zlatko (14x), Babujian, Levon (11x), Kosintseva, Tatiana (10x), Milfort, Vaclav (10x), Martinez Alcantara, Jose Eduardo (10x)
4…g6 — 0.4% (1923 parties)
Ambassadeurs : Flores Linan, Jose Luis (25x), De Schepper, Bart (10x), Ventimiglia, Chuck (7x), Sokol, Milan (6x), Manole, Gheorghe (6x), Sommerfeld, Gilbert (5x), Chibeka Bradford (5x), Jahr, Dieter (5x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Nf6 4…Nc6 4…a6 4…g6
<1800 37949 95% 2% 1% 1%
1800-2200 215259 98% 1% 1% 0%
2200-2600 205461 99% 0% 0% 0%
2600+ 8022 100% 0% 0%
Évolution par décennie (% des parties)
Décennie N parties 4…Nf6 4…Nc6 4…a6 4…g6
1950s 3391 99% 0% 0% 0%
1960s 7081 98% 1% 1% 0%
1970s 12037 99% 1% 0% 0%
1980s 23235 98% 0% 0% 0%
1990s 77349 98% 1% 1% 0%
2000s 156542 98% 1% 1% 0%
2010s 196557 98% 1% 1% 0%
2020s 68279 99% 0% 0% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nf6 98% 99% ▲ +0.7%
4…Nc6 1% 0% -0.3%
4…a6 1% 0% -0.2%
4…g6 0% 0% -0.2%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 10 parties
Tal, Mikhail — 10 parties
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Anand, Viswanathan — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Hou, Yifan — 10 parties
Ding, Liren — 10 parties
Ju, Wenjun — 10 parties
Gukesh D — 10 parties
Smyslov, Vladimir — 6 parties
Capablanca, Jose Raul — 1 partie
Parties historiques
4…Nf6 — 98.0% (533570 parties)
1950 — Paoli, Enrico vs Smyslov, Vasily — 0-1 — Venice ITA
1950 — Kramer, Gerald vs Rossetto, Hector — 1/2-1/2 — Dubrovnik olm
1950 — Balogh, Janos vs ADAM ELAMAIREH — 1-0 — corr Wch1
1950 — Gligoric, Sofija vs Stahlberg, Gideon — 1/2-1/2 — Amsterdam NED
1950 — Czerniak, Moshe vs Kotov, Alexander — 0-1 — Venice ITA
4…Nc6 — 0.7% (3642 parties)
1951 — Poulsen, Allan vs Stumpers, Louis — 1-0 — Beverwijk NED
1953 — Cafferty, Bernard vs Parr, AF. — 1/2-1/2 — ?
1955 — Mazzoni, Guy vs Dubyna, Dmytro — 1-0 — Paris FRA
1955 — Rohland, Michael Karl vs Ruvalcaba, S. — 1-0 — ?
1957 — Nielsen, Julius vs Acosta, Cristian — 1-0 — Copenhagen DEN
4…a6 — 0.6% (3135 parties)
1950 — Alexander, Hugh vs Buerger, Victor — 1-0 — Buxton
1950 — Stein, Georg vs Ullrich, Bruno — 1-0 — Soemmerda GER
1950 — Rapaka Samuel Paul vs Miguel, Nahuel — 1/2-1/2 — Amsterdam NED
1951 — Rebizzo, Cayetano vs Juarez, Carlos Eleodoro — 0-1 — Buenos Aires ARG
1952 — Byvshev, Vasily vs Kan, Ilya A — 1-0 — Moscow RUS
4…g6 — 0.4% (1923 parties)
1950 — Pietzsch, Wolfgang vs Weiss, Peter — 1-0 — Zittau
1951 — Bernstein, Ossip vs Grob, Henry — 1-0 — Madrid ESP
1951 — Matanovic, Aleksandar vs Grob, Henry — 1-0 — Bad Pyrmont GER
1952 — Weiss, Israel vs Leslie, Donald Daniel — 1-0 — Chester ch-BCF
1952 — Batuev, Andrey M vs Shianovsky, Vladislav I — 0-1 — Odessa UKR