B23a — Sicilian: Closed

1.e4 c5 2.Nc3 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. g3 (Préparer le fianchetto — 37 % des parties) ; f4 (Attaque à l'aile roi — 27 % des parties) ; Nf3 (Développer g1 — 13 % des parties) ; Bb5 (Clouer d7, Fou actif (mobilité 8), Développer f1 — 8 % des parties) ; Nge2 (Développer g1 — 7 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...Nc6 (Développer b8 — 59 % des parties) ; ...d6 (Libérer Bc8 — 16 % des parties) ; ...e6 (Poussée — 15 % des parties) ; ...a6 (Préparer expansion aile dame — 6 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● d5 (2v0)	—
Cases faibles	—	—
Centre	● d5 (2v0), ● e4 (1v0)	● d4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
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	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	mobile
Ruptures	● d2-d4	● …d7-d5, ● …f7-f5

Partie
11. Tal Mem Blitz 2018 – Round 2.4 – Grischuk, Alexander – 1/2-1/2 – Nepomniachtchi, Ian – G11 1. e4 c5 2. Nc3 a6 3. Nge2 d6 4. g3 Nf6 5. Bg2 g6 6. d4 cxd4 7. Nxd4 Bg7 8. h3 O-O 9. O-O Bd7 10. Be3 Nc6
1921 Vienna – Round 2 – Krejcik, Jiri – 0-1 – Tartakower, Savielly – G10 1. e4 c5 2. Nc3 a6 3. g3 g6 4. Bg2 Bg7 5. Nge2 Nc6 6. d3 d6 7. Be3 Nf6 8. h3 Bd7 9. d4 cxd4 10. Nxd4 O-O
1933 BCF Ch 26th – Round 4 – Thomas, George Alan – 1/2-1/2 – Cole, Henry Holwell – G10 1. e4 c5 2. Nc3 e5 3. Bc4 d6 4. d3 Nc6 5. Nd5 Rb8 6. a4 a6 7. Bd2 b5 8. axb5 axb5 9. Bb3 Nge7 10. Bg5 Qd7
1937 Kemeri – Round 1 – Hasenfus, W. – 0-1 – Fine, Richard Alvaro Adrien – G69 1. e4 c5 2. Nc3 Nf6 3. e5 Ng8 4. f4 Nc6 5. Nf3 d5 6. g3 e6 7. Bg2 Nh6 8. Ne2 Be7 9. d4 Nf5 10. c3 Qb6
1946 POL Ch – Round 3 – Gawlikowski, Stanislaw – 1-0 – Zahorski Eugeniusz – G17 1. e4 c5 2. Nc3 Nf6 3. e5 Ng8 4. f4 e6 5. Nf3 d6 6. g3 Nc6 7. Bg2 Nge7 8. exd6 Qxd6 9. Ne4 Qc7 10. d3 Nf5
1949 GER Ch 13th – Round 8 – Rellstab, Ludwig – 1-0 – Siegel Paul – G20 1. e4 c5 2. Nc3 e5 3. Bc4 g6 4. d3 Bg7 5. f4 Nc6 6. Nf3 Nge7 7. fxe5 Nxe5 8. Nxe5 Bxe5 9. O-O d5 10. Bb5+ Kf8
1951 Hastings5152 – Round 5 – Thomas Andrew – 1-0 – Donner, Jan-Hein – G21 1. e4 c5 2. Nc3 a6 3. f4 e6 4. Nf3 d5 5. e5 Nc6 6. Be2 Nge7 7. O-O Nf5 8. a4 h5 9. Ng5 g6 10. Bf3 Be7
1951 USA-op52 – Round 10 – Evans, Larry M – 1-0 – Donovan, Jeremiah – G23 1. e4 c5 2. Nc3 e5 3. Bc4 Nc6 4. d3 d6 5. f4 Be6 6. Bb5 exf4 7. Bxf4 Nf6 8. Nf3 Be7 9. e5 Nd5 10. exd6 Bxd6
1954 FRG Ch qual West – Round 4 – Engert, Immo – 1-0 – Hantke Rolf – G9 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. b3 Nf6 6. Bb2 e6 7. d3 Qc7 8. f4 d5 9. e5 d4 10. Ne4 Nd5
1958 GBR Ch 45th – Round 1.12 – Pritchard, David Brine – 1-0 – Penrose, Jonathan – G1 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. d3 e6 6. Nf3 d6 7. Be3 Nf6 8. O-O Nbd7 9. Nh4 b4 10. Na4 Qa5
1959 Warsaw Legion tt – Round 2.2 – Franz, Joachim – 1-0 – Orbaan, Constant – G13 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. Nge2 Nf6 6. d3 g6 7. O-O d6 8. Re1 Nc6 9. d4 cxd4 10. Nxd4 Nxd4
1959 York ch-BCF – Round 1 – Howson, Jim B – 1/2-1/2 – Penrose, Justin – G13 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. Nge2 e6 6. d4 cxd4 7. Nxd4 b4 8. Na4 Nf6 9. Qd3 d5 10. exd5 Bxd5
1963 Beverwijk – Round 1 – Smederevac, Petar – 1-0 – Fazekas, Stephan – G9 1. e4 c5 2. Nc3 a6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Be3 d6 7. Qd2 Nf6 8. h3 Bd7 9. Nge2 b5 10. O-O O-O
1964 DEN Ch Holstebro – Round 9 – From, Sigfred – 0-1 – Norby, Peter H. – G33 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. d3 e6 6. Nf3 Be7 7. O-O d6 8. Re1 Nf6 9. Bf4 Nbd7 10. Qe2 O-O
1964 EU Ch U20 Niemeyer 3rd – Round 2 – Algera, Symon – 0-1 – Ree, Hans – G5 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. d3 e6 6. f4 Nf6 7. Nf3 d6 8. O-O Be7 9. Ne2 O-O 10. c3 Nc6
1967 Savona ch ITA – Round 3 – Zichichi, Alvise – 1-0 – Palmiotto, Fiorentino – G7 1. e4 c5 2. Nc3 a6 3. a4 Nc6 4. g3 g6 5. Bg2 Bg7 6. d3 d6 7. Nd5 e6 8. Ne3 Nge7 9. Ne2 Bd7 10. c3 O-O
1969 Raach zt – Round 19 – Espig, Lutz – 1-0 – Hartoch, Robert G – G157 1. e4 c5 2. Nc3 a6 3. g3 Nc6 4. Bg2 b5 5. Nge2 Bb7 6. O-O g6 7. d4 cxd4 8. Nxd4 Bg7 9. Be3 Ne5 10. a4 b4
4. World Blitz 2008 – Round 1 – Morozevich, Alexander – 1-0 – Sasikiran, Krishnan – G3 1. e4 c5 2. Nc3 a6 3. f4 b5 4. Nf3 Bb7 5. d3 g6 6. g4 Bg7 7. Bg2 d6 8. h4 h5 9. g5 e6 10. Ne2 Ne7
GRENKE Chess Classic 2019 – Round 4.2 – Naiditsch, Arkadij – 1-0 – Keymer, Vincent – G17 1. e4 c5 2. Nc3 a6 3. Nge2 d6 4. a4 Nf6 5. g3 Nc6 6. Bg2 e6 7. O-O Be7 8. f4 O-O 9. d3 Rb8 10. h3 Nd7
Saint Louis Blitz 2017 – Round 16.5 – Caruana, Fabiano – 0-1 – Nepomniachtchi, Ian – G80 1. e4 c5 2. Nc3 a6 3. Nge2 b5 4. d4 cxd4 5. Nxd4 Bb7 6. Bg5 Qc7 7. Qd2 e6 8. Bd3 Nc6 9. Nxc6 Qxc6 10. O-O Ne7
Superbet Blitz 2022 – Round 14.5 – Duda, Jacob – 1-0 – Wojtaszek, Radoslaw – G70 1. e4 c5 2. Nc3 a6 3. d3 Nc6 4. g3 g6 5. Bg2 Bg7 6. Be3 d6 7. Qd2 Rb8 8. h3 Nd4 9. Nd1 e5 10. c3 Nc6
World Blitz 2015 – Round 3.15 – Vallejo Pons, Francisco – 1-0 – Nepomniachtchi, Ian – G146 1. e4 c5 2. Nc3 a6 3. g4 Nc6 4. Bg2 e6 5. d3 Nge7 6. Nh3 d5 7. O-O d4 8. Ne2 h5 9. g5 b5 10. f4 Bb7
World Blitz 2015 – Round 6.12 – Anton Guijarro, David – 0-1 – Andreikin, Dmitry – G346 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. d3 e6 6. Nh3 b4 7. Na4 Bc6 8. b3 Bxa4 9. bxa4 Nc6 10. O-O Nf6
World Blitz 2016 – Round 18.40 – Adhiban, B. – 1-0 – Atabayev, Maksat – G728 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. Nge2 e6 6. d4 b4 7. Na4 cxd4 8. Qxd4 Nc6 9. Qb6 Qxb6 10. Nxb6 Rb8
World Blitz 2016 – Round 21.41 – Adhiban, B. – 1/2-1/2 – Salinas Herrera, Pablo – G840 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. d3 d6 6. Nh3 e6 7. O-O Nd7 8. f4 Qc7 9. f5 e5 10. a4 b4
World Blitz 2017 – Round 10.9 – Amonatov, Farrukh – 1-0 – Korobov, Anton – G549 1. e4 c5 2. Nc3 a6 3. f4 b5 4. Nf3 Bb7 5. d3 e6 6. g3 Nf6 7. Bg2 d6 8. O-O Qc7 9. h3 Be7 10. a4 b4
World Blitz 2019 – Round 5.41 – Sanal, Vahap – 0-1 – Svidler, Peter – G340 1. e4 c5 2. Nc3 a6 3. g3 g6 4. Bg2 Bg7 5. d3 b5 6. f4 d6 7. Nf3 b4 8. Ne2 a5 9. O-O Bb7 10. g4 Nf6
World Blitz 2022 – Round 4.10 – Dragnev, Valentin – 1-0 – Andreikin, Dmitry – G179 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. Nge2 e6 6. d4 cxd4 7. Nxd4 Nf6 8. Qe2 Nc6 9. Nxc6 Bxc6 10. Nd5 Bc5
World Blitz 2023 – Round 15.65 – Demchenko, Aleksandr – 1-0 – Abdisalimov, Abdimalik – G888 1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. Nge2 e6 6. O-O Nf6 7. d3 d6 8. h3 Nc6 9. Be3 Be7 10. f4 O-O

B23a — Closed (1921)

1.e4 c5 2.Nc3

Les coups candidats

2…Nc6 — 59.3% (132581 parties) →

Ambassadeurs : Mitkov, Nikola (132x), ? (129x), Rogulj, Branko (112x), Starostits, Ilmars (98x), Bastian, Herbert (93x), Hort, Vlastimil (87x), Jansa, Vlastimil (68x), Blatny, Frantisek (67x)

2…d6 — 15.7% (35133 parties) →

Ambassadeurs : Nekhaev, Andrey Ivanovich (59x), ? (52x), Mitkov, Nikola (47x), Gelfand, Boris (42x), Gutman, Lev (41x), Sammalvuo, Tapani (26x), Gdanski, Jacek (26x), Clares Huanca, Danner Saed (24x)

2…e6 — 14.9% (33290 parties) →

Ambassadeurs : Mitkov, Nikola (67x), ? (44x), Balashov, Yuri (33x), Bastian, Herbert (31x), Espig, Lutz (29x), Suetin, Alexey S (20x), Spraggett, Kevin (19x), Hebden, Mark L (18x)

2…a6 — 5.6% (12439 parties)

Ambassadeurs : Vehi Bach, Victor Manuel (27x), Lyell, Mark (23x), Ghaem Maghami, Ehsan (22x), Mitkov, Nikola (20x), Doluhanova, Evgeniya (18x), Deus Filho, Joaquim de (14x), Starostits, Ilmars (12x), Macieja, Bartlomiej (10x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	2…Nc6	2…d6	2…e6	2…a6
<1800	19838	53%	19%	16%	6%
1800-2200	105576	60%	14%	15%	6%
2200-2600	65629	59%	15%	15%	7%
2600+	1418	38%	35%	17%	8%

Évolution par décennie (% des parties)

Décennie	N parties	2…Nc6	2…d6	2…e6	2…a6
1950s	797	79%	11%	4%	2%
1960s	2138	78%	10%	7%	1%
1970s	3634	66%	16%	15%	1%
1980s	6746	67%	14%	16%	1%
1990s	37073	67%	14%	15%	2%
2000s	70883	62%	15%	15%	4%
2010s	74714	54%	17%	15%	8%
2020s	27720	51%	19%	15%	9%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
2…Nc6	54%	51%	▼ -3.2%
2…d6	17%	19%	▲ +2.3%
2…e6	15%	15%	+0.2%
2…a6	8%	9%	▲ +0.7%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 10 parties
Karpov, Anatoly — 10 parties
Smyslov, Vladimir — 10 parties
Anand, Viswanathan — 10 parties
Kasparov, Garry — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Ju, Wenjun — 10 parties
Hou, Yifan — 10 parties
Gukesh D — 10 parties
Botvinnik, Mikhail — 8 parties
Karpov, Aleksandr — 4 parties
Ding, Liren — 4 parties
Smyslov, Vassily — 1 partie

Parties historiques

2…Nc6 — 59.3% (132581 parties)

1950 — Karacsonyi, Laszlo vs Soos, Bela — 1-0 — Marosvasarhely
1950 — Poulsen, Christian vs Rapaka Samuel Paul — 0-1 — Dubrovnik olm
1950 — Afizov, Marsel vs Hejduk, Jakub — 0-1 — Chocen
1950 — Bykova, Elizaveta vs Karff, Mona M — 1-0 — Moscow RUS
1950 — Sinclair, Don vs Holowach, Walter — 0-1 — Edmonton CAN

2…d6 — 15.7% (35133 parties)

1950 — Bykova, Elizaveta vs Mora, Maria Teresa — 1/2-1/2 — Moscow RUS
1950 — Kauder, Hartmut vs Mueller, Claus — 1/2-1/2 — Soemmerda ch GDR
1950 — Palda, Karl vs Pinzon Solis, Felipe — 1/2-1/2 — Dubrovnik olm
1950 — Henneberger, Walter vs Van Mol, Yves — 1-0 — Switzerland
1950 — Rapaka Samuel Paul vs Dygert, Bert — 0-1 — Springfield,MA simul

2…e6 — 14.9% (33290 parties)

1950 — Balogh, Janos vs Benko, Pal — 0-1 — Budapest HUN
1950 — Ivkov, Borislav vs Pilnik, Herman — 1-0 — Bled SLO
1950 — Bykova, Elizaveta vs Keller-Hermann, Edith — 1-0 — Moscow RUS
1950 — Palda, Karl vs Kupferstich, Moises — 1/2-1/2 — Dubrovnik olm
1951 — Smyslov, Vasily vs Kotov, Alexander — 1/2-1/2 — Moskou ch-URS

2…a6 — 5.6% (12439 parties)

1951 — Aabel Thomas Eapen vs Donner, Jan-Hein — 1-0 — Hastings ENG
1954 — Eretova, Kveta vs Wojcik, X — 0-1 — Moscow SU-CS w
1954 — Engert, Immo vs Hantke, Rolf — 1-0 — Bad Salzuflen
1955 — Beni, Alfred vs Prins, Laura — 1-0 — Hamburg GER
1955 — Engert, Immo vs Mross, Paul — 0-1 — Hoechst ch-GER

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