Structure de pions

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

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bc4	● Bc4 Actif (mob. 9)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	5 (● b1, ● g1, ● c1, ● 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

B20i — Sicilian: 2.Bc4

1.e4 c5 2.Bc4 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Nc3 (Développer b1 — 33 % des parties) ; Nf3 (Développer g1 — 32 % des parties) ; d3 (Solidifier le centre — 8 % des parties) ; c3 (Renforcer le centre — 6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...e6 (Poussée — 50 % des parties) ; ...Nc6 (Développer b8 — 30 % des parties) ; ...d6 (Libérer Bc8 — 14 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1929 BCF Ch 22nd – Round 10 – Sultan Khan, Mir – 1/2-1/2 – Winter, William – G21 1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. a4 Nc6 5. Nf3 Nf6 6. Qe2 Nd4 7. Nxd4 cxd4 8. Nb1 d5 9. exd5 Nxd5 10. O-O Be7
1948 Karlovy Vary – Round 13 – Stoltz, Gabriel – 1-0 – Barcza, Gedeon – G128 1. e4 c5 2. Bc4 e6 3. Qe2 a6 4. c3 Nc6 5. Nf3 Nge7 6. d4 cxd4 7. cxd4 d5 8. Bb3 dxe4 9. Qxe4 Na5 10. Bc2 Qd5
1948 Karlovy Vary – Round 5 – Stoltz, Gabriel – 1/2-1/2 – Foltys, Jan – G58 1. e4 c5 2. Bc4 e6 3. Qe2 Nc6 4. c3 Be7 5. d3 d5 6. Bb3 Nf6 7. Nf3 dxe4 8. dxe4 O-O 9. e5 Nd5 10. Bc2 Qc7
1948 Nijmegen – Round 9 – Prins, Lodewijk – 1/2-1/2 – Vlagsma, Chris – G28 1. e4 c5 2. Bc4 Nc6 3. c3 Nf6 4. Qe2 d5 5. exd5 Nxd5 6. Nf3 Bf5 7. d4 e6 8. O-O Be7 9. dxc5 Bxc5 10. Rd1 O-O
1949 OWL Ch – Round 10 – Illgen, Hans – 1/2-1/2 – Werner, Stephan – G10 1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. a4 Nc6 5. Nf3 Nf6 6. d4 d5 7. exd5 exd5 8. Be2 Be7 9. O-O O-O 10. Bg5 Bf5
1953 FRA Ch 28th – Round 8 – Gorog, Almos – 0-1 – Tartakower, Savielly – G17 1. e4 c5 2. Bc4 e6 3. d3 a6 4. a3 d5 5. exd5 exd5 6. Ba2 Be6 7. Ne2 Bd6 8. Nf4 Bxf4 9. Bxf4 Ne7 10. O-O O-O
1959 Skittles – Round ? – Austin, Neil T – 1/2-1/2 – Blackstone, John – G14 1. e4 c5 2. Bc4 Nc6 3. Qf3 Ne5 4. Qb3 Nxc4 5. Qxc4 e6 6. Nf3 d5 7. exd5 exd5 1/2-1/2
1959 Skittles – Round ? – O'Brian, Casey – 0-1 – Blackstone, John – G18 1. e4 c5 2. Bc4 Nc6 3. Qh5 e6 4. d3 Nf6 5. Qd1 d5 6. exd5 exd5 7. Bb5 a6 8. Bxc6+ bxc6 9. Nf3 Qe7+ 10. Qe2 Bg4
1960 Ch - Campbell High S – Round 6 – Geant, P. – 0-1 – Blackstone, John – G6 1. e4 c5 2. Bc4 Nc6 3. Qf3 Ne5 4. Qf4 Nxc4 5. d3 Nb6 6. Nf3 e6 7. Ng5 Qf6 8. Nc3 Qxf4 9. Bxf4 Nf6 10. Nb5 Nh5
1960 Club Ladder – Round ? – Norris, Jim Jr – 0-1 – Blackstone, John – G5 1. e4 c5 2. Bc4 Nc6 3. Nc3 a6 4. a4 e6 5. Nge2 Nf6 6. f4 d5 7. e5 dxc4 8. exf6 Qxf6 9. O-O Nd4 10. Ne4 Qd8
1961 Skittles – Round ? – Souza, Anthony – 0-1 – Blackstone, John – G2 1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. Nf3 b5 5. Be2 Be7 6. O-O Nf6 7. Ne5 O-O 8. d3 d6 9. Nf3 d5 10. exd5 exd5
1962 Open – Round 1 – Bizliey, E. – 0-1 – Blackstone, John – G1 1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. a3 b5 5. Ba2 Nc6 6. d3 Be7 7. Nf3 Bf6 8. Qd2 Nge7 9. Qe3 Nd4 10. Bb1 Bb7
1966 Club Championship – Round 11 – Lane, Daniel – 0-1 – Osbun, Erik – G11 1. e4 c5 2. Bc4 e6 3. c3 d5 4. Bb5+ 4. ... Nc6 5. d4 dxe4 6. c4 cxd4 7. Ne2 Bb4+ 8. Bd2 Bxd2+ 9. Nxd2 Nf6 10. Nb3 e5
1968 Cordoba op-2 Centro de la Republica – Round 2 – Garay Murua Roger – 1/2-1/2 – Redolfi, Argentino Rodolfo – G2 1. e4 c5 2. Bc4 e6 3. Nc3 Nc6 4. a3 Nf6 5. d3 Be7 6. Bg5 h6 7. Bxf6 Bxf6 8. Nge2 O-O 9. O-O a6 10. Rb1 b5
1968 OWL Ch – Round 11 – Spilker, Friedhelm – 0-1 – Werner, Stephan – G23 1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. a4 Nc6 5. d3 Be7 6. Nf3 d6 7. O-O Bf6 8. Bd2 Nge7 9. Bg5 Bxg5 10. Nxg5 h6
1968 OWL Ch – Round 7 – Spilker, Friedhelm – 0-1 – Groenegress, Wilfried – G15 1. e4 c5 2. Bc4 Nc6 3. Nc3 g6 4. d3 Bg7 5. Nf3 d6 6. O-O a6 7. a4 e6 8. Be3 Nge7 9. Bb3 Nd4 10. Qd2 Nec6
World Blitz 2016 – Round 17.54 – Mohamed, Ali Dima – 0-1 – Zhang, Zhong – G695 1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. a3 Nc6 5. Nf3 d6 6. Be2 Nf6 7. d3 b5 8. Bg5 Be7 9. O-O Bb7 10. Qd2 O-O

B20i — Bowdler Attack (1929)

1.e4 c5 2.Bc4

Les coups candidats

2…e6 — 49.6% (4756 parties)

Ambassadeurs : Kreveld, Frank van (22x), Kashin, Yury (17x), Ventura, Bob (16x), Lamy, Odette (14x), Cooke, Tristrom P (13x), Rasik, Vitezslav (12x), Wall, Bill (10x), Jablecnik, Gustav (10x)

2…Nc6 — 30.0% (2876 parties)

Ambassadeurs : Mizik, Zsolt (10x), Rasik, Vitezslav (9x), Jablecnik, Gustav (9x), Kreveld, Frank van (9x), Kashin, Yury (8x), Rintakoski, Pentti (8x), Bradaric, Ratomir (6x), Lotzien, Hans (6x)

2…d6 — 14.3% (1372 parties)

Ambassadeurs : Matej, Peter (4x), Collins, Richard (3x), Horvatic, Zvonko (3x), Orestes, Jorge (2x), Timar, Zsolt (2x), ? (2x), Choate, Eric (2x), Pretti J (2x)

2…Nf6 — 2.2% (212 parties)

Ambassadeurs : Advait Prashant Chute (2x), Howie, Andy (2x), Atmakuru Degun Chand (1x), Charest, Johanne (1x), Voloshin, Pavel (1x), Smith, Rachel Lorna (1x), Kjaerstad, Eivind J (1x), Kirrurer (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	2…e6	2…Nc6	2…d6	2…Nf6
<1800	2005	51%	28%	16%	2%
1800-2200	2713	54%	31%	11%	1%
2200-2600	387	59%	33%	4%	0%
2600+	3	—	100%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	2…e6	2…Nc6	2…d6	2…Nf6
1950s	21	38%	57%	5%	—
1960s	42	43%	36%	14%	—
1970s	87	44%	38%	8%	8%
1980s	205	55%	29%	9%	1%
1990s	1892	46%	31%	17%	3%
2000s	3314	49%	30%	15%	2%
2010s	3154	52%	30%	13%	1%
2020s	874	50%	28%	14%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
2…e6	52%	50%	▼ -2.4%
2…Nc6	30%	28%	▼ -1.3%
2…d6	13%	14%	▲ +0.9%
2…Nf6	1%	3%	▲ +1.6%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 1 partie

Parties historiques

2…e6 — 49.6% (4756 parties)

1953 — Angel Davis Mwangi vs Cafferty, Bernard — 0-1 — Birmingham ENG
1953 — Gorog, E. vs Tartakower, Savielly — 0-1 — Paris FRA
1954 — Stender Pedersen, B. vs Blom, Kaj — 1-0 — Hillerod
1955 — Blomvist, H.. vs Isaac, Russell D. — 0-1 — New Westminster
1956 — Stender Pedersen, B. vs Thorsen, Hans Erik — 1-0 — Nyborg

2…Nc6 — 30.0% (2876 parties)

1950 — Grosser, Wilhelm vs Ullrich, Bruno — 0-1 — Soemmerda GER
1953 — Wesselowski Leo vs Conen, Friedrich — 1-0 — Soest NED
1954 — Steinmeier, Jonatan Frimann vs Hecker, Erwin — 1/2-1/2 — Lemgo
1955 — Johansen, Jorgen vs Kolvig, Bent — 0-1 — Esbjerg DEN
1956 — Kemper, Meinolf vs Hain, Anthony — 1-0 — corr Dyckhoff mem

2…d6 — 14.3% (1372 parties)

1953 — Reps, P.. vs Jeffers, E.L.. — 1-0 — ?
1960 — Shackle, P. vs Collins, Richard — 0-1 — Hayes
1960 — Cox, Bailey vs Collins, Richard — 0-1 — Hayes
1960 — Wheatley, Len vs Collins, Richard — 0-1 — Hayes
1966 — Hamilton, Jada vs Berry, Jonathan — 0-1 — Vancouver

2…Nf6 — 2.2% (212 parties)

1972 — Voloshin, Pavel vs Smith, Rachel Lorna — 1-0 — Berkeley
1972 — LeMirande, G. vs Adlkhah, Sassan — 0-1 — ?
1972 — Pierce, R. vs Schmidt, Rachel — 1/2-1/2 — Berkeley
1975 — Iron Fish vs Advait Prashant Chute — 0-1 — ACM Minneapolis
1975 — Etaoin Shrdlu vs Advait Prashant Chute — 1-0 — ACM Minneapolis