Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● b7→a6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (2v0)	—
Cases faibles	—	—
Centre	● d5 (2v0), ● e4 (1v0), ● e5 (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	4 (● 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

B28b — Sicilian: O’Kelly, 3.Nc3

1.e4 c5 2.Nf3 a6 3.Nc3 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. d4 (Occuper le centre — 82 % des parties) ; g3 (Préparer le fianchetto — 7 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...e6 (Poussée — 32 % des parties) ; ...d6 (Libérer Bc8 — 29 % des parties) ; ...b5 (Expansion aile dame — 22 % des parties) ; ...Nc6 (Développer b8 — 15 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1905 Scheveningen – Round 13 – Loman, Rudolf – 0-1 – Marshall, Frank – G30 1. e4 c5 2. Nc3 a6 3. Nf3 b5 4. d4 cxd4 5. Nxd4 Bb7 6. Bd3 g6 7. Be3 Bg7 8. Qd2 Nf6 9. f3 d5 10. e5 Nfd7
1905 Scheveningen – Round 3 – Reggio, Arturo – 0-1 – Marshall, Frank – G19 1. e4 c5 2. Nc3 a6 3. Nf3 b5 4. d4 cxd4 5. Nxd4 Bb7 6. Bd3 g6 7. O-O Bg7 8. Be3 Nc6 9. Nce2 Nf6 10. f3 O-O
1949 Venice – Round 11 – Fletzer, Gino – 0-1 – Rossolimo, Nicolas – G84 1. e4 c5 2. Nf3 a6 3. Nc3 e6 4. g3 b5 5. Bg2 Bb7 6. d3 d6 7. O-O Nd7 8. Ng5 Ngf6 9. f4 Qc7 10. Qe2 h6
1950 Venice – Round 13 – Rossolimo, Nicolas – 1-0 – Steiner, Heinrich Jun. – G105 1. e4 c5 2. Nf3 a6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e5 6. Nxc6 dxc6 7. Qxd8+ Kxd8 8. Bc4 f6 9. Be3 b5 10. Bb3 Kc7
1955 Hamburg – Round 1 – Beni, Alfred – 1-0 – Prins, Laura – G9 1. e4 c5 2. Nc3 a6 3. Nf3 Nf6 4. e5 Ng8 5. d4 cxd4 6. Nxd4 Nc6 7. Nxc6 bxc6 8. Bd3 g6 9. O-O Bg7 10. Qe2 Nh6
1957 Leningrad Ch – Round 1 – Estrin, Yakov – 0-1 – Tolush, Alexander V – G9 1. e4 c5 2. Nf3 a6 3. Nc3 d6 4. Be2 e5 5. Bc4 Be6 6. Bd5 Nc6 7. d3 Be7 8. O-O Nf6 9. Bxc6+ bxc6 10. Ng5 Bg4
1960 Poland Ch – Round 10 – Bednarski, Jacek B – 1/2-1/2 – Brzozka, Stefan – G42 1. e4 c5 2. Nf3 a6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 e5 6. Nf5 Be6 7. Nd5 Nf6 8. Nxf6+ gxf6 9. Ne3 Bh6 10. Nd5 Bxc1
1961 Hungary Ch – Round 1 – Szabo, Ladislav – 1-0 – Orendi, E. – G6 1. e4 c5 2. Nf3 a6 3. Nc3 b5 4. d4 cxd4 5. Nxd4 Bb7 6. Bd3 e6 7. O-O Qc7 8. Be3 Nf6 9. a3 d5 10. exd5 Nxd5
1961 Mar del Plata – Round 10 – Aguilar Dominguez, Cristhel Guadalupe – 1/2-1/2 – Letelier Martner, Rene – G91 1. e4 c5 2. Nf3 a6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Qc7 6. Nd5 Qd8 7. Be3 Rb8 8. Nb5 Qa5+ 9. c3 axb5 10. Bb6 Qxb6
1961 Palanga Baltic Ch – Round ? – Klavins, Janis – 1-0 – Blagidze, Alexander – G36 1. e4 c5 2. Nf3 a6 3. Nc3 b5 4. d4 b4 5. Na4 cxd4 6. Qxd4 Nc6 7. Qb6 Rb8 8. Qxd8+ Nxd8 9. Bf4 d6 10. e5 Ne6
1962 Erevan ch-URS – Round 1 – Aronin, Lev – 1/2-1/2 – Korchnoi, Viktor – G65 1. e4 c5 2. Nf3 a6 3. Nc3 e6 4. Be2 Qc7 5. O-O Nc6 6. Re1 Nf6 7. Bf1 d6 8. d4 cxd4 9. Nxd4 Be7 10. Nxc6 bxc6
1962 URS-ch30 – Round 19 – Aronin, Lev – 1/2-1/2 – Korchnoi, Viktor – G4 1. e4 c5 2. Nf3 a6 3. Nc3 e6 4. Be2 Qc7 5. O-O Nc6 6. Re1 Nf6 7. Bf1 d6 8. d4 cxd4 9. Nxd4 Be7 10. Nxc6 bxc6
1962 Varna olm – Round 2 – Kinzel, Andreas – 1-0 – Prins, Laura – G92 1. e4 c5 2. Nf3 a6 3. Nc3 b5 4. d4 Bb7 5. dxc5 e6 6. Be3 Qc7 7. Nd4 Bxc5 8. Bxb5 Nf6 9. Bd3 Bb4 10. O-O Bxc3
1963 Fortaleza zt – Round 10 – Quinones Carrillo, Oscar – 1-0 – Klein, Juan Carlos – G54 1. e4 c5 2. Nf3 a6 3. Nc3 b5 4. d4 cxd4 5. Nxd4 Bb7 6. a3 d6 7. g3 Nf6 8. Bg2 e6 9. O-O Qc7 10. h3 Nc6
1965 Tallinn ch-URS – Round 1 – Suetin, Alexey S – 1/2-1/2 – Taimanov, Mark E – G76 1. e4 c5 2. Nf3 a6 3. Nc3 b5 4. d4 cxd4 5. Nxd4 Bb7 6. Bd3 b4 7. Nb1 e5 8. Nf3 d6 9. c3 Nf6 10. Qe2 Nbd7
1966 Tbilisi ch-URS – Round 4 – Liberzon, Vladimir M – 0-1 – Taimanov, Mark E – G35 1. e4 c5 2. Nf3 a6 3. Nc3 b5 4. d4 cxd4 5. Nxd4 Bb7 6. Bd3 b4 7. Na4 e5 8. Nf5 g6 9. Ne3 Nf6 10. f3 Be7
Bugojno 1982 – Round 1 – Ivanovic, Bozidar – 1/2-1/2 – Andersson, Ulf 1949 – G43 1. e4 c5 2. Nf3 a6 3. Nc3 b5 4. d4 b4 5. Na4 cxd4 6. Qxd4 Nc6 7. Qe3 Nf6 8. Bc4 e6 9. O-O Qa5 10. b3 Be7
Qatar Masters Open 2015 – Round 3.22 – Abdumalik, Zhansaya – 0-1 – Ganguly, Surya Shekhar – G102 1. e4 c5 2. Nf3 a6 3. Nc3 b5 4. a3 Bb7 5. d4 cxd4 6. Nxd4 e6 7. Bd3 Qb6 8. Nb3 Qc7 9. Be3 Nf6 10. O-O Be7
World Blitz 2021 – Round 9.47 – Pichot, Alan – 1/2-1/2 – Kozak, Adam – G542 1. e4 c5 2. Nf3 a6 3. Nc3 b5 4. d4 cxd4 5. Nxd4 Bb7 6. Bd3 g6 7. a4 b4 8. Nd5 Bg7 9. Be3 Nf6 10. c4 bxc3

B28b — Yerevan System (1905)

1.e4 c5 2.Nf3 a6 3.Nc3

Les coups candidats

3…e6 — 31.6% (1529 parties)

Ambassadeurs : Vasilevich, Tatjana (9x), Zuluaga Mancilla, Cesar (9x), Karimov, Farukh (7x), Korchnoi, Viktor (6x), Nuber, Korbinian, Dr. (6x), Gaponenko, Inna (5x), Gorbatov, Alexej (5x), Pilat, Daniel (4x)

3…d6 — 29.4% (1423 parties)

Ambassadeurs : Csom, Istvan (13x), Krastev, Alexander (8x), Ardeleanu, Alin (7x), Guseinov, Gadir (4x), Tal, Mikhail (3x), Codenotti, Marco (3x), Kobese, Watu (3x), Von Meijenfeldt, Bart (3x)

3…b5 — 22.1% (1070 parties)

Ambassadeurs : Franklin, Michael J (10x), Kurajica, Bojan (8x), Khamrakulov, Ibragim S. (7x), Erenska-Barlo, Hanna (5x), Mazalon, Mariusz (4x), Bach, Matthias (4x), Ruiz Jaraba, Valentina Sofia (4x), Efimov, Igor (3x)

3…Nc6 — 15.3% (740 parties)

Ambassadeurs : Taimanov, Mark (3x), Durán Vallverdú, Joan (3x), Fleming, Wagner (2x), Carr, Jay (2x), Saltaev, Mihail (2x), Borsavolgyi, Tamas (2x), Ruiz Gomez, Alejandro (2x), Sardarov, Edward (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	3…e6	3…d6	3…b5	3…Nc6
<1800	420	30%	25%	18%	25%
1800-2200	1877	30%	28%	22%	19%
2200-2600	1970	35%	33%	25%	6%
2600+	25	56%	20%	24%	—

Évolution par décennie (% des parties)

Décennie	N parties	3…e6	3…d6	3…b5	3…Nc6
1950s	19	21%	37%	11%	26%
1960s	67	40%	12%	25%	22%
1970s	72	28%	14%	32%	22%
1980s	87	28%	25%	20%	28%
1990s	416	29%	26%	16%	28%
2000s	1381	32%	29%	22%	15%
2010s	2053	34%	31%	21%	13%
2020s	737	25%	32%	29%	12%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
3…e6	34%	25%	▼ -9.1%
3…d6	31%	32%	▲ +0.8%
3…b5	21%	29%	▲ +8.9%
3…Nc6	13%	12%	-0.4%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 4 parties
Hou, Yifan — 4 parties
Karpov, Anatoly — 1 partie

Parties historiques

3…e6 — 31.6% (1529 parties)

1950 — Paoli, Enrico vs Bahro, Tom — 1/2-1/2 — Vienna AUT
1956 — Nezhmetdinov, Rashid vs Vasilev, Milen — 1-0 — ?
1959 — Bak, Istvan vs Forgacs, Andras — 1-0 — CsB
1959 — Gufeld, Eduard vs Taimanov, Mark — 0-1 — Tbilisi ch-URS
1960 — Richter, Ch vs Keller-Hermann, Edith — 1/2-1/2 — Leipzig GER

3…d6 — 29.4% (1423 parties)

1951 — Eastman, Gavey vs Martin, Raymond — 1-0 — Forth Worth
1953 — Tal, Mikhail vs Josif Israel Zilber — 1-0 — Riga LAT
1953 — Byvshev, Vasily vs Nei, Iivo — 1-0 — Leningrad RUS
1953 — Tal, Mikhail vs Zilber, Israel — 1-0 — Riga LAT
1957 — Estrin, Yakov vs Alexander Tadala — 0-1 — Leningrad RUS

3…b5 — 22.1% (1070 parties)

1951 — Medina-Garcia, Antonio vs Fuentes, Manuel — 0-1 — Madrid ESP
1957 — Suetin, Alexey S vs Spassky, Boris V. — 1/2-1/2 — Leningrad RUS
1961 — Szabo, Laszlo vs Orendy, Emil — 1-0 — Budapest HUN
1961 — Klavins, Janis vs Blagidze, Alexander — 1-0 — Palanga
1962 — Kincel, Artur vs Prins, Lodewijk — 1-0 — ?

3…Nc6 — 15.3% (740 parties)

1950 — Rossolimo, Nicolas vs Steiner, Herman — 1-0 — Venice ITA
1955 — Williams, J.Noel vs Zalys, Ignas — 1-0 — Montreal ch
1956 — Castiglioni, Andre Lazzari vs Mohovich, Paolo — 1-0 — corr Italy
1956 — Ugolik, Witaly vs Makarov, Arkady Alexandrovic — 0-1 — Kiev UKR
1957 — Zvorykina, Kira Alekseyevna vs Barshauskas, Vitautas — 1/2-1/2 — Minsk zt

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