Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (2v0)	—
Cases faibles	—	—
Centre	● d4 (1v0), ● d5 (2v0)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c, ● d	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 5)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	6 (● b1, ● g1, ● 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	—	● …d7-d5, ● …f7-f5

B21s — Sicilian: Smith-Morra Accepted

1.e4 c5 2.d4 cxd4 3.c3 dxc3 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Nxc3 (Développer b1 — 99 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nc6 (Développer b8 — 69 % des parties) ; ...e6 (Solidifier le centre, libérer le fou — 14 % des parties) ; ...d6 (Libérer Bc8 — 13 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

└── B21s - 4.Nxc3 - Smith-Morra Accepted [-0.34] · 90 parties

├── B21w - 4…Nc6 - Sicilian: Smith-Morra (1961) [-0.35] · 82 parties

│ ├── B21w - 5.Nf3 - Sicilian: Smith-Morra (1956) [-0.30] · 79 parties

│ │ ├── B21y - 5…d6 - Sicilian: Smith-Morra [-0.33] · 63 parties

│ │ │ └── B21y - 6.Bc4 - Sicilian: Smith-Morra (1954) [-0.38] · 63 parties

│ │ │ ├── B21y - 6…e6 - Smith-Morra Gambit Accepted, Scheveningen Formation (1948) [-0.31] · 52 parties

│ │ │ │ ├── B21y - 7.O-O - Smith-Morra (1955) [-0.30] · 46 parties

│ │ │ │ │ ├── B21z - 7…Nf6 - Sicilian: Smith-Morra (1949) [-0.14] · 24 parties

│ │ │ │ │ │ ├── B21z - 8.Qe2 Be7 - Sicilian: Smith-Morra (1956) [+0.03] · 15 parties

│ │ │ │ │ │ └── B21z - 8.* - Sicilian: Smith-Morra · 9 parties

│ │ │ │ │ └── B21y - 7…* - Sicilian: Smith-Morra · 22 parties

│ │ │ │ └── B21y - 7.* - Smith-Morra Gambit Accepted, Scheveningen Formation · 6 parties

│ │ │ ├── B21y - 6…a6 - Sicilian: Smith-Morra (1960) [-0.32] · 6 parties

│ │ │ └── B21y - 6…* - Sicilian: Smith-Morra · 5 parties

│ │ ├── B21x - 5…e6 - Sicilian: Smith-Morra (1955) [-0.38] · 11 parties

│ │ │ ├── B21x - 6.Bc4 - Sicilian: Smith-Morra (1952) [-0.45] · 8 parties

│ │ │ │ ├── B21x - 6…* - Sicilian: Smith-Morra · 4 parties

│ │ │ │ └── B21x - 6…a6 - Smith-Morra Gambit Accepted, Paulsen Formation (1957) [-0.45] · 4 parties

│ │ │ └── B21x - 6.* - Sicilian: Smith-Morra · 3 parties

│ │ └── B21w - 5…* - Sicilian: Smith-Morra · 5 parties

│ └── B21w - 5.* - Sicilian: Smith-Morra · 3 parties

├── B21t - 4…d6 - Smith-Morra (1955) [-0.27] · 5 parties

└── B21u - 4…e6 - Sicilian: Smith-Morra (1958) [-0.34] · 3 parties

├── B21v - 5.Nf3 - Sicilian: Smith-Morra (1967) [-0.27] · 2 parties

└── B21u - 5.* - Sicilian: Smith-Morra · 1 partie

Les parties, variante par variante

190 partiesB21s - 4.Nxc3 - Smith-Morra Accepted

B21s — Smith-Morra Accepted

1.e4 c5 2.d4 cxd4 3.c3 dxc3

Les coups candidats

4.Nxc3 — 98.5% (21309 parties) →

Ambassadeurs : ? (135x), Zelic, Mladen (104x), Morin, Louis (89x), Moore, Ken (86x), Vasquez, Fernando (82x), Lochte, Thomas (67x), Poulheim, Karl-Friedrich, Dr. (44x), Schroeder, Marc J P G (43x)

4.Bc4 — 1.3% (279 parties)

Ambassadeurs : ippuli (37x), Kurpnieks, Vairis (17x), Büktas, Bedi (11x), ? (6x), Banda Tapiwa (4x), vsahs (3x), Avdeyeva, Viktoriya (3x), Blackstone, John (2x)

4.Nf3 — 0.1% (31 parties)

Ambassadeurs : ippuli (4x), Imai Toshio (3x), Hellgren, Egil (1x), Soderlung (1x), Roeder, Frank (1x), Seibold, Hubert, Dr. (1x), Kalod, Michal (1x), Zboril, Tomas (1x)

4.bxc3 — 0.0% (8 parties)

Ambassadeurs : Ban Viktor (1x), Laskowski, Adam (1x), Neumann Jada (1x), Lipnowski, Michael (1x), tizz (1x), jmcerna (1x), Apsyrtes (1x), marceli (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4.Nxc3	4.Bc4	4.Nf3	4.bxc3
<1800	2635	99%	1%	0%	—
1800-2200	9831	99%	1%	0%	—
2200-2600	2783	99%	0%	0%	0%
2600+	15	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	4.Nxc3	4.Bc4	4.Nf3	4.bxc3
1950s	114	99%	1%	—	—
1960s	208	98%	1%	0%	—
1970s	511	99%	1%	—	—
1980s	1178	99%	1%	0%	—
1990s	4668	99%	1%	0%	0%
2000s	7376	98%	2%	0%	0%
2010s	5994	99%	1%	0%	0%
2020s	1582	98%	1%	0%	0%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4.Nxc3	99%	98%	▼ -0.6%
4.Bc4	1%	1%	+0.3%
4.Nf3	0%	0%	+0.3%
4.bxc3	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Kasparov, Garry — 1 partie
Karpov, Anatoly — 1 partie
Tal, Mikhail — 1 partie

Parties historiques

4.Nxc3 — 98.5% (21309 parties)

1950 — Lokvenc, Josef vs Bolbochan, Jacobo — 1/2-1/2 — Vienna AUT
1951 — Schlieder, Rolf vs Rathai, Volker — 0-1 — Schwerin GER
1953 — Matulovic, Milan vs Alsjo, Sigge — 1-0 — Yugoslavia
1953 — Reicher, Johannes vs Szabo, Abel — 0-1 — Budapest HUN
1953 — Matulovic, Milan vs Sokolov, Vladimir — 1-0 — Italy

4.Bc4 — 1.3% (279 parties)

1955 — Lukes, Frantisek vs Holub, Jan — 1-0 — Prague CZE
1961 — Mitchell, Philip vs Blackstone, John — 0-1 — San Jose, CA USA
1964 — Haralambof, Vladimir vs Rippstein, M. — 1-0 — corr EU
1969 — Milenkovic, Lazar vs Blackstone, John — 0-1 — Long Beach, CA USA
1972 — Cooper, AJ. vs Foster, JL. — 0-1 — Barnstaple

4.Nf3 — 0.1% (31 parties)

1967 — Hellgren, Egil vs Soderlung — 1-0 — Uppsala
1982 — Roeder, Frank vs Seibold, Hubert, Dr. — 1/2-1/2 — Tirschenreuth
1997 — Pelak, Martin vs Maly, Filip — 0-1 — Svetla nad Sazavou
1998 — Kalod, Michal vs Zboril, Tomas — 0-1 — Olomouc CZE
1998 — Robovic, Saudin vs Paschall, William — 1-0 — New York, NY USA

4.bxc3 — 0.0% (8 parties)

1993 — Ban Viktor vs Laskowski, Adam — 0-1 — ?
1997 — Neumann Jada vs Lipnowski, Michael — 0-1 — MB Challenge
2002 — tizz vs jmcerna — 0-1 — www.playchess.de
2002 — Apsyrtes vs marceli — 1-0 — www.playchess.de
2012 — Tomísek, Petr vs Glaser, Karel — 0-1 — ICCF