B23j — Sicilian: Closed, Korchnoi Variation

1.e4 c5 2.Nc3 e6 3.g3 d5 * ○ Trait aux Blancs

Ouverture — Tension centrale

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte b5, paire de fous.
Faiblesses adverses : Bc8 enfermé, Bf8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, arriéré f2, 5 pièces non développées (G1, C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Nf3 — Développer Ng1
● d3 — Libérer Bc1
● Bd3 — Développer Bf1
● c3 — Préparer d4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : paire de fous.
Faiblesses adverses : arriéré f2, Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, Bf8 enfermé, 6 pièces non développées (B8, G8, C8, F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Bd7 — PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bf5)
● ...Nbd7 — Développer Nb8
● ...Nf6 — Développer Ng8
● ...Be7 — Développer Bf8

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

B23j — Closed Korchnoi Variation

1.e4 c5 2.Nc3 e6 3.g3 d5

Eval: [-0.14]

Les coups candidats

4.exd5 — 56.7% (2635 parties)

Ambassadeurs : Dudek, Richard (11x), Rogulj, Branko (10x), Costa, Fernando J.M. (8x), Pacey, Kevin (8x), Dormann, Lars (7x), Kulesza, Mateusz (7x), Eilers, Jochen (7x), Blatny, Frantisek (6x)

4.Bg2 — 21.2% (984 parties)

Ambassadeurs : Bartsch, Berthold (15x), Bastian, Herbert (12x), Welz, Peter, Dr. (7x), Van Voorthuijsen, Peewee (6x), Raupp, Thomas (5x), Bastian, Martin (5x), Barnes, Craig (4x), Marjanovic, Slavoljub (4x)

4.d3 — 20.9% (971 parties)

Ambassadeurs : Starostits, Ilmars (8x), Liljedahl, Lennart (6x), Casper, Thomas (6x), Abramovic, Bosko (6x), Sabirova, Olga (5x), Gaertner, Guntram (5x), Whitehead, Mark A (5x), Kulhanek, Tomas (5x)

4.e5 — 0.9% (40 parties)

Ambassadeurs : Tarachowicz, Alina (2x), Bellemare, Regis (2x), Mottais, Francois (2x), Swol, G. van (1x), Boll, Peter (1x), Gkotski, A. (1x), Gulati, Ashish (1x), Ho, Andrew (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4.exd5	4.Bg2	4.d3	4.e5
<1800	135	54%	18%	25%	3%
1800-2200	1966	59%	19%	20%	1%
2200-2600	1528	54%	22%	23%	0%
2600+	17	47%	29%	24%	—

Évolution par décennie (% des parties)

Décennie	N parties	4.exd5	4.Bg2	4.d3	4.e5
1870s	1	100%	—	—	—
1880s	1	—	—	100%	—
1890s	2	100%	—	—	—
1900s	9	44%	22%	33%	—
1910s	1	100%	—	—	—
1920s	1	100%	—	—	—
1930s	1	100%	—	—	—
1940s	5	80%	—	20%	—
1950s	4	50%	25%	25%	—
1960s	32	53%	28%	19%	—
1970s	131	47%	24%	28%	1%
1980s	294	48%	31%	21%	—
1990s	1071	59%	21%	18%	1%
2000s	1661	59%	18%	22%	1%
2010s	1170	56%	22%	21%	1%
2020s	261	53%	28%	18%	0%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4.exd5	56%	53%	▼ -2.3%
4.Bg2	22%	28%	▲ +5.6%
4.d3	21%	18%	▼ -2.8%
4.e5	1%	0%	-0.5%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 8 parties
Smyslov, Vladimir — 2 parties
Kasparov, Garry — 2 parties
Kramnik, Vladimir — 1 partie

Parties historiques

4.exd5 — 56.7% (2635 parties)

1879 — Riemann, Fritz vs Paulsen, Louis — 0-1 — Leipzig GER
1897 — Walbrodt vs Janowski, Arkadiusz — 0-1 — Berlin GER
1899 — Cohn, Wilhelm vs Janowski, Dawid — 0-1 — London ENG
1904 — Teichmann, Richard vs Mieses, Jacques — 0-1 — Cambridge
1905 — Leonhardt, Paul vs Mieses, Jacques — 1-0 — London ENG

4.Bg2 — 21.2% (984 parties)

1904 — Lawrence, Thomas F vs Schlechter, Carl — 0-1 — Cambridge Springs
1907 — Chigorin, Mikhail vs Marshall Viele, Fabrizio Aaron — 1/2-1/2 — Ostende
1956 — Hacsak, Istvan vs Szekely, Janos Ferenc — 1-0 — Debrecen HUN
1960 — Janosevic, Dragoljub vs Kozomara, Vlado — 1-0 — Ljubljana
1966 — Fernandez, Ruben vs Tapia Hugo — 1-0 — Buenos Aires ARG

4.d3 — 20.9% (971 parties)

1881 — Schallopp, Emil vs Paulsen, Wilfried — 1-0 — Berlin GER
1904 — Mason, James vs Van Vliet, Louis — 0-1 — London ENG
1906 — Salwe, Georg vs Marshall, Frank — 1-0 — Ostend
1908 — Salwe, George vs Mieses, Julio Cesar — 1/2-1/2 — Duesseldorf GER
1948 — Bakonyi, Elek vs Trifunovic, Petar — 0-1 — Budapest HUN

4.e5 — 0.9% (40 parties)

1978 — Swol, G. van vs Boll, Peter — 0-1 — NLD-BV/78-24
1991 — Tarachowicz, Alina vs Wagenschuetz, Evelyn — 1-0 — Mamaia
1992 — Tarachowicz, Alina vs Gkotski, A. — 1-0 — Rimavska Sobota SVK
1992 — Kusec, Stjepan vs Medak, Jasnica — 1-0 — Pula CRO
1996 — Gulati, Ashish vs Ho, Andrew — 0-1 — Edmonton ch-CAN jr

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	● f2	—
Chaînes	● f2→g3, h2→g3	● e6→d5, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0)	—
Cases faibles	—	—
Centre	—	● d4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 7)
Bc8		● Bc8 Non développé (mob. 1)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	5 (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	tension
Ruptures	● d2-d3, ● e4-e5, ● f2-f3	● …c5-c4, ● …d5-d4, ● …e6-e5, ● …f7-f6, ● …f7-f5

Partie
? 1998 – Round ? – Dragan Talpa, Marco – 0-1 – Kasparov, Garry – G51 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. Nge2 d4 7. Ne4 Nxe4 8. Bxe4 Nd7 9. O-O Nf6 10. Bg2 Bd6
? 2000 – Round ? – Short, Nigel D – 1-0 – Wojtkiewicz, Aleksander – G58 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 dxe4 5. Nxe4 Nc6 6. d3 Be7 7. f4 Nf6 8. Nf3 Qc7 9. O-O O-O 10. Kh1 b6
1904 Cambridge Springs – Round 11 – Teichmann, Richard – 0-1 – Mieses, Jacques – G51 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. d4 Nf6 6. Bg2 cxd4 7. Qxd4 Nc6 8. Qa4 Bb4 9. Ne2 O-O 10. O-O Bxc3
1904 Cambridge Springs – Round 12 – Lawrence, Thomas F – 0-1 – Schlechter, Carl – G24 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 Nf6 5. d3 Be7 6. Nge2 Nc6 7. O-O d4 8. Nb1 h5 9. h3 e5 10. f4 Bd7
1904 London – Round 14 – Mason, James – 0-1 – Van Vliet, Louis – G39 1. e4 c5 2. Nc3 e6 3. g3 d5 4. d3 Nf6 5. Bg2 Nc6 6. Bd2 Be7 7. Nge2 d4 8. Nb1 a6 9. Na3 e5 10. Nb1 Be6
1907 Ostende – Round 1 – Chigorin, Mikhail – 0-1 – Tarrasch, Siegbert – G8 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. d3 Be7 7. Nge2 d4 8. Ne4 O-O 9. O-O Nc6 10. Nf4 Ne5
1907 Ostende – Round 2 – Chigorin, Mikhail – 1/2-1/2 – Marshall Viele, Fabrizio Aaron – G20 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 Nf6 5. d3 Nc6 6. Nge2 d4 7. Nb1 Be7 8. Nd2 h5 9. Nf3 Ng4 10. h3 Nf6
1927 London Olympiad 1st – Round 15.73 – Hromadka, Karel – 1-0 – Nogues Acuna, Alejandro – G169 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. d4 Be6 6. Nge2 Nf6 7. Bg2 c4 8. O-O Bd6 9. Bg5 Be7 10. Bxf6 Bxf6
1930 Paris – Round 6 – Gromer, Aristide – 1-0 – Mieses, Jacques – G11 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. d4 Nf6 6. Bg5 Be7 7. Nge2 Nc6 8. Bg2 cxd4 9. Bxf6 Bxf6 10. Nxd5 O-O
1942 Kuibyshev – Round 9 – Alatortsev, Vladimir N. – 1-0 – Mikenas, Vladas – G41 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. d3 Be7 7. Nge2 O-O 8. d4 Nc6 9. Be3 Ng4 10. Nxd5 Nxe3
1947 Chigorin Memorial – Round 1 – Smyslov, Vladimir – 1/2-1/2 – Trifunovic, Petar – G52 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. d3 d4 7. Ne4 Nxe4 8. Bxe4 Bd6 9. Qh5 Nd7 10. Bg5 Be7
1947 GBR Ch 34. Premier – Round 11 – Truscott, Alan Fraser – 0-1 – Aitken, James – G31 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. d3 Be7 7. Nge2 Nc6 8. O-O O-O 9. Nf4 Bg4 10. Nce2 d4
1947 GBR Ch 34th – Round 7 – Thomas, George Alan – 1-0 – Blow, Ronald – G33 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. d4 Nc6 6. Bg2 Be6 7. Nge2 Nf6 8. O-O Be7 9. Be3 cxd4 10. Nxd4 Bg4
1948 Budapest – Round 7 – Bakonyi, Elek – 0-1 – Trifunovic, Petar – G38 1. e4 c5 2. Nc3 e6 3. g3 d5 4. d3 dxe4 5. Nxe4 Be7 6. Bg2 Nf6 7. Be3 Nd5 8. Bd2 O-O 9. Ne2 Nc6 10. O-O Qd7
1955 Wch U20 prel-C – Round 4 – Broden, Per – 0-1 – Ciric, Dragoljub M – G11 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. d4 cxd4 6. Qxd4 Be6 7. Nf3 Nc6 8. Qd1 d4 9. Ne2 Bb4+ 10. Bd2 d3
1960 Ljubljana – Round 15 – Janosevic, Dragoljub – 1-0 – Kozomara, Vlado – G101 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 d4 5. Nce2 e5 6. Nf3 Nc6 7. d3 f6 8. Nh4 g5 9. Nf5 Nge7 10. f4 Nxf5
1965 Pardubice – Round 1 – Machacek, Petr – 1/2-1/2 – Opocensky, Karel – G9 1. e4 c5 2. Nc3 e6 3. g3 d5 4. d3 dxe4 5. Nxe4 Bd7 6. Nf3 Bc6 7. Qe2 Nd7 8. Bg2 Ngf6 9. O-O Be7 10. Bf4 Nd5
1965 Tallinn ch-URS – Round 1 – Taimanov, Mark E – 1/2-1/2 – Polugaevsky, Lev – G75 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. d3 Be7 7. Nge2 d4 8. Ne4 Nxe4 9. Bxe4 Nd7 10. O-O O-O
1966 La Habana olm fin-C – Round 13 – Zichichi, Alvise – 1/2-1/2 – Ribeiro, Joao Mario – G36 1. e4 c5 2. Nc3 e6 3. g3 d5 4. d3 Nf6 5. Bg2 Nc6 6. exd5 Nxd5 7. Nge2 Nxc3 8. bxc3 Be7 9. O-O O-O 10. Be3 Bd7
1966 La Habana olm fin-C – Round 5 – Zichichi, Alvise – 1-0 – Feller, Josy – G14 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. Nge2 Nc6 7. O-O Bg4 8. h3 Be6 9. Nf4 Be7 10. Re1 Qd7
1968 Lugano ol (Men) fin-C – Round 1 – Zichichi, Alvise – 1/2-1/2 – Kokkoris, Haralambos – G3 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. Nf3 d4 7. Ne2 Be7 8. O-O O-O 9. d3 Nc6 10. Nf4 Rb8
1968 USSR – Round 1 – Gulko, Boris – 1-0 – Vladimirov, Boris T – G21 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. d3 d4 7. Ne4 Be7 8. Nxf6+ Bxf6 9. Qe2+ Be7 10. Nf3 Nd7
1969 Lublin – Round 1 – Ozsvath, Andras – 1-0 – Barczay, Laszlo – G3 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 d4 5. Nce2 Nc6 6. d3 e5 7. f4 Bd6 8. Nf3 Bg4 9. O-O Nge7 10. c4 exf4
1969 Mar del Plata zt – Round ? – Canobra, Juvenal – 0-1 – Garcia Rodriguez, Raimundo – G60 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 dxe4 5. Nxe4 Nh6 6. b3 Nf5 7. Ne2 Be7 8. Bb2 Nc6 9. O-O O-O 10. f4 b6
1969 Raach zt – Round 1 – Camilleri, Henry – 1/2-1/2 – Barczay, Laszlo – G13 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 dxe4 5. Nxe4 Nh6 6. d3 Nf5 7. Nf3 Nc6 8. O-O Be7 9. Bg5 O-O 10. Qd2 b6
1969 Raach zt – Round 11 – Camilleri, Henry – 0-1 – Jakobsen, Ole – G101 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 dxe4 5. Nxe4 Nf6 6. Nxf6+ Qxf6 7. Nf3 Nc6 8. O-O Qd8 9. b3 Be7 10. Bb2 Bf6
1969 Zagreb – Round 3 – Siaperas, Triantafyllos – 1/2-1/2 – Barczay, Laszlo – G33 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. d3 Nf6 6. Bg2 Be7 7. Nf3 d4 8. Ne2 Nc6 9. O-O O-O 10. Re1 Bd6
1969 Zagreb – Round 7 – Siaperas, Triantafyllos – 1/2-1/2 – Bertok, Mario Jr. – G52 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. d3 d4 7. Ne4 Nxe4 8. Bxe4 Be7 9. Ne2 Nd7 10. Bg2 O-O
1975 URS Team Ch – Round 3 – Saakova, Anzhelina – 1/2-1/2 – Fatalibekova, Elena – G239 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. d4 Nf6 6. Nf3 Bg4 7. Bg2 Nc6 8. Qe2+ Be7 9. dxc5 O-O 10. O-O Bxc5
41. Olympiad Open 2014 – Round 6.23 – Bengherabi, Khalil – 0-1 – Beliavsky, Alexander G – G432 1. e4 c5 2. Nc3 e6 3. g3 d5 4. d3 dxe4 5. Nxe4 Be7 6. Bg2 Nf6 7. Ne2 Nxe4 8. Bxe4 O-O 9. O-O Qc7 10. Nc3 Nc6
Bugojno 1982 – Round 1 – Spassky, Boris V. – 1/2-1/2 – Kasparov, Garry – G40 1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. Nge2 d4 7. Ne4 Nxe4 8. Bxe4 Nd7 9. O-O Nf6 10. Bg2 Bd6
SuperGM It 1999 – Round 5 – Short, Nigel D – 1/2-1/2 – Topalov, Veselin – G20 1. e4 c5 2. Nc3 e6 3. g3 d5 4. d3 Nc6 5. exd5 exd5 6. Bg2 Nf6 7. Nge2 d4 8. Ne4 Nxe4 9. dxe4 Be7 10. O-O O-O
World Blitz 2015 – Round 5.47 – Duda, Jacob – 1-0 – Sanal, Vahap – G313 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 d4 5. Nce2 Nc6 6. d3 e5 7. f4 Bd6 8. Nf3 Nf6 9. O-O O-O 10. f5 Ng4
World Blitz 2019 – Round 18.27 – Andriasian, Zaven – 1-0 – Golubov, Saveliy – G1208 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 Nf6 5. d3 Be7 6. Qe2 O-O 7. Nf3 Nc6 8. O-O b6 9. Bf4 d4 10. Nb1 Bb7
World Blitz 2022 – Round 2.75 – Begmuratov, Khumoyun – 0-1 – Nguyen, Thai Dai Van – G119 1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 d4 5. Nce2 Nc6 6. d3 e5 7. f4 Bd6 8. Nf3 f6 9. O-O Nge7 10. a4 Be6

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