Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● f7→e6
Passés	—	—
Majorité	● aile dame 3v2	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (2v1), ● b5 (3v0)	● e5 (2v0)
Cases faibles	—	—
Centre	● d4 (2v1), ● d5 (3v2)	● e5 (2v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Be3	● Be3 Actif (mob. 5)
Bc4	● Bc4 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 1)
Bf8		● Bf8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	2 (● a1, ● h1)	4 (● 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

B89a — Sicilian: Sozin, 7.Be3

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Qe2 (Pression sur colonne e, Prépare O-O-O — 68 % des parties) ; Bb3 (21 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Be7 (Développer f8 — 64 % des parties) ; ...a6 (Préparer expansion aile dame — 33 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1958 HUN Ch 13th – Round 8 – Ozsvath, Andras – 1-0 – Szilagyi, Gyorgy Laszlo – G68 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 d5 8. Bb5 Bd7 9. exd5 exd5 10. O-O Be7
1965 Hamburg etc – Round 10 – Lein, Anatoly – 1/2-1/2 – Van Wijngaarden, Frank – G147 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 d6 6. Bc4 Nf6 7. Be3 Qc7 8. Qe2 a6 9. O-O-O b5 10. Nxc6 bxc4
1967 Buenos Aires VC Ch – Round 7 – Morgado, Juan Sebastian – 1-0 – Senabre, Juan Vicente – G6 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Bd7 8. Qe2 a6 9. Bb3 Be7 10. O-O-O Qa5
1967 Sarajevo – Round 7 – Pietzsch, Wolfgang – 1/2-1/2 – Ivkov, Borislav – G35 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 d6 6. Be3 Nf6 7. Bc4 Bd7 8. Qe2 Rc8 9. Bb3 Qa5 10. O-O Be7
1967 Savona ch ITA – Round 1 – Schiesari, Roberto – 1-0 – Paoli, Enrico – G3 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Qa5 8. O-O Be7 9. a3 O-O 10. Nb3 Qc7
1968 Lasker Memorial – Round 1 – ? – 1/2-1/2 – Hennings, Artur – G16 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Qa5 8. O-O Be7 9. Bb3 O-O 10. f4 Nxd4
1968 Mar del Plata ch-ARG – Round 2 – Rossetto, Hector – 1-0 – Wexler, Bernardo – G18 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 d5 8. exd5 exd5 9. Bb5 Bd7 10. O-O Be7
1969 Corr – Round 1 – Morgado, Juan Sebastian – 1-0 – Lusin, Horacio Daniel – G7 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 Nf6 6. Bc4 e6 7. Be3 g6 8. Qe2 Nxd4 9. Bxd4 e5 10. Be3 Bg7
1969 Leeuwarden ch-NED – Round 10 – Zuidema, Coen – 1/2-1/2 – Kramer, Hanspeter – G46 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 d6 6. Bc4 Nf6 7. Be3 d5 8. exd5 exd5 9. Bb5 Bd7 10. O-O Be7
1969 Schwerin – Round 9 – Neukirch, Detlef – 1-0 – Kuettner, Uwe – G70 1. e4 c5 2. Nc3 Nc6 3. Nge2 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bc4 e6 7. Be3 Qc7 8. Bb3 a6 9. O-O Be7 10. f4 O-O
1969 WchT U26 fin-B 16th – Round 4.2 – Wahlbom, Magnus – 1-0 – Polgar, Istvan – G24 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Bd7 8. Qe2 a6 9. O-O-O b5 10. Bb3 b4
1973 Leningrad Interzonal – Round 11 – Torre, Eugenio – 1-0 – Cuellar Alpire, Mariana – G84 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Qc7 8. Qe2 Be7 9. O-O-O a6 10. Bb3 Na5
2024 SuperUnited Rapid & Blitz Croatia – Round 2 – Vachier-Lagrave Maxime – 1-0 – Saric Ivan – G7 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Bd7 8. Qe2 a6 9. Bb3 b5 10. a3 Na5
FIDE World Blitz Championship 2025 – Round 2 – Nepomniachtchi Ian – 1-0 – Warmerdam Max – G23 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Bd7 8. Qe2 a6 9. a3 b5 10. Ba2 Qc7

B89a — Sozin (1958)

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3

Les coups candidats

7…Be7 — 59.8% (5744 parties) →

Ambassadeurs : Paoli, Enrico (20x), ? (19x), Schneider, Lars-Ake (17x), Spassov, Liuben (16x), Wedberg, Tom (16x), Muir, Andrew J (16x), De Firmian, Nick (13x), Cebalo, Miso (13x)

7…a6 — 35.6% (3423 parties) →

Ambassadeurs : Madl, Ildiko (39x), Lerner, Konstantin Z (20x), Velimirovic, Dragoljub (19x), ? (16x), Inkiov, Ventzislav (16x), Sher, Miron (15x), Lupulescu, Constantin (15x), Gupta, Abhijeet (14x)

7…Bd7 — 2.6% (254 parties)

Ambassadeurs : Reeh, Oliver (5x), Delgado Ramirez, Neuris (4x), Kucuksari, Kaan (4x), Draghici Flutur, Gavril (4x), Ivanov, Igor V. (3x), Amar, Elham (3x), Warmerdam, Max (3x), Borik, Otto (2x)

7…Qc7 — 1.1% (106 parties)

Ambassadeurs : Ungureanu, Emil (7x), Mantovani, Renzo (6x), Mititelu, Gheorghe (4x), Bernard, Christophe (4x), Di Paolo, Raffaele (3x), Shirazi, Kamran (2x), Woller, Rainer (2x), Velimirovic, Dragoljub (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7…Be7	7…a6	7…Bd7	7…Qc7
<1800	273	70%	25%	1%	1%
1800-2200	2569	64%	32%	3%	1%
2200-2600	5048	53%	42%	3%	1%
2600+	80	59%	34%	8%	—

Évolution par décennie (% des parties)

Décennie	N parties	7…Be7	7…a6	7…Bd7	7…Qc7
1950s	24	71%	21%	4%	—
1960s	371	77%	16%	2%	2%
1970s	839	72%	23%	2%	3%
1980s	1152	60%	36%	2%	2%
1990s	2482	61%	36%	1%	1%
2000s	2526	57%	40%	1%	1%
2010s	1637	60%	36%	2%	1%
2020s	581	38%	43%	18%	0%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…Be7	60%	38%	▼ -22.7%
7…a6	36%	43%	▲ +7.0%
7…Bd7	2%	18%	▲ +16.2%
7…Qc7	1%	0%	▼ -0.6%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 10 parties
Kasparov, Garry — 6 parties
Anand, Viswanathan — 6 parties
Hou, Yifan — 3 parties
Ju, Wenjun — 2 parties
Kramnik, Vladimir — 1 partie
Ding, Liren — 1 partie
Gukesh D — 1 partie

Parties historiques

7…Be7 — 59.8% (5744 parties)

1950 — Estrin, Yakov vs Aronin, Lev — 1/2-1/2 — USSR ch sf
1950 — Rossolimo, Nicolas vs Acoltzi Ruiz, Mariana — 1/2-1/2 — Mar del Plata ARG
1952 — Woronzoff, Larry vs Gligoric, Svetozar — 0-1 — Hollywood, CA
1953 — Sefc, Jan vs Jezek, Jaroslav — 1-0 — Prague CZE
1953 — Vesely, Jiri vs Sajtar, Jaroslav — 1/2-1/2 — Prague CZE

7…a6 — 35.6% (3423 parties)

1955 — Cross, Robert Gary vs Evans, Larry — 0-1 — ?
1955 — McLellan, Richard Alan vs Colby, Kenneth Mark — 1-0 — Long Beach, CA USA
1955 — Cross, Robert Gary vs Kovacs, Zoltan — 1-0 — ?
1959 — Fabian, Jaroslav vs Rejfir, Josef — 1/2-1/2 — Cerveny Kostelec
1959 — Tesar, Karol vs Rejfir, Josef — 0-1 — Trebic

7…Bd7 — 2.6% (254 parties)

1958 — Tracy, Tom vs CHUKS, Smith Daniel — 0-1 — Pittsburg, CA
1963 — Sloan, Sam vs Martz, William — 0-1 — US Junior ch;State College,PA
1966 — Barungi Kemuel John vs Patty, Jack — 1-0 — Toronto CAN
1966 — Dantes La Primavera vs Ranjith Kumar Molli — 1-0 — cr.
1967 — Morgado, Juan Sebastian vs Senabre, Juan Vicente — 1-0 — Buenos Aires ARG

7…Qc7 — 1.1% (106 parties)

1960 — Nacht, Edgar vs Bondoc, Dan-Vladimir — 0-1 — Bucharest ROU
1965 — Lein, Anatoly vs Van Wijngaarden, Frank — 1/2-1/2 — Hamburg etc
1969 — Neukirch, Detlef vs Kuettner, Uwe — 1-0 — Schwerin GER
1969 — Adorjan, Alex vs Ribli, Zoltan — 1-0 — HUN
1969 — Petkevici vs Gurgenidze, Aleksandra — 0-1 — Moscow RUS

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