C64u — Spanish: Classical, 6.c3 Bb6 7.d4 c6 8.Ba4

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nd4 5.Nxd4 Bxd4 6.c3 Bb6 7.d4 c6 8.Ba4 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : Ba4 actif, paire de fous.
Faiblesses adverses : arriéré d7, Bc8 enfermé, roi noir au centre, pawn e5 en prise.
Problèmes : Bc1 enfermé, 3 pièces non développées (B1, C1, A1).
Plans :
● Nc3 — Développer Nb1
● Be3 — Développer Bc1

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : Bb6 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé.
Problèmes : roi au centre, Bc8 enfermé, arriéré d7, 4 pièces non développées (G8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Nf6 — Développer Ng8
● ...c5 — Rupture
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C64u — Classical

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nd4 5.Nxd4 Bxd4 6.c3 Bb6 7.d4 c6 8.Ba4

Eval: [+0.34]

Les coups candidats

8…d6 — 95.8% (969 parties)

Ambassadeurs : Soukup, Jiri (10x), Charest, Johanne (8x), Niedermaier, Hans (6x), Basagic, Zlatko (6x), Klimov, Valery (6x), Werner, Clemens (6x), Bronstein, Luis Marcos (5x), Bonner, Gerald (5x)

8…exd4 — 2.0% (20 parties)

Ambassadeurs : Kliavin (1x), Zhuravlev, Aleksandr (1x), Klavins, Janis (1x), Zhuravliov, Valerij (1x), Zagorovsky, Vladimir (1x), Kuznetsov, Andrey (1x), Bauza, Lorenzo (1x), Dantas, Nelson (1x)

8…Qf6 — 0.7% (7 parties)

Ambassadeurs : Hegedus, Gyula (1x), Marchis, Arghil (1x), Balazs, Attila (1x), Szebeni-Janosi, Pal (1x), Radovic, Gavrilo (1x), Danojlic, Petar (1x), Pares Peris, Jordi (1x), Walter Travella, German (1x)

8…Bc7 — 0.6% (6 parties)

Ambassadeurs : Vaculik, Martin (1x), Zakoucky, Otto (1x), Hendrick, John Kristan (1x), Ridge, Glyn W (1x), Robles Asuncion Lo German (1x), Gris Catala, Manuel (1x), Hlas, Jan (1x), Chrastina, M (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…d6	8…exd4	8…Qf6	8…Bc7
<1800	30	83%	—	3%	7%
1800-2200	315	95%	3%	2%	0%
2200-2600	375	99%	1%	—	—
2600+	16	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	8…d6	8…exd4	8…Qf6	8…Bc7
1860s	1	—	—	—	—
1870s	1	—	—	—	—
1940s	4	100%	—	—	—
1950s	30	97%	3%	—	—
1960s	46	89%	11%	—	—
1970s	60	98%	—	—	—
1980s	84	99%	1%	—	—
1990s	194	96%	3%	—	1%
2000s	270	96%	1%	1%	1%
2010s	276	95%	1%	1%	1%
2020s	46	98%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…d6	95%	98%	▲ +2.5%
8…exd4	1%	0%	▼ -1.1%
8…Qf6	1%	0%	▼ -1.4%
8…Bc7	1%	0%	▼ -0.7%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 2 parties
Tal, Mikhail — 1 partie

Parties historiques

8…d6 — 95.8% (969 parties)

1947 — Zagorovsky, Vladimir vs Kirillov, Vladimir — 1-0 — Leningrad RUS
1949 — Kiprov, Alexander vs Mechkarov, Stefan — 0-1 — Sofia BUL
1949 — Panov, Vasily vs Bonch-Osmolovsky, Mikhail — 1-0 — Moscow RUS
1949 — Bobotsov, Milko G vs Mechkarov, Stefan — 1-0 — Sofia BUL
1950 — Unzicker, Wolfgang vs O'Kelly, Albéric de Galway — 1/2-1/2 — Liberation Belgrade YUG

8…exd4 — 2.0% (20 parties)

1952 — Bauza, Lorenzo vs Dantas, Nelson — 1/2-1/2 — Rio de Janeiro BRA
1962 — Klovans, Janis vs Zhuravlev, Valery Ivanovich — 1-0 — Riga LAT
1964 — Zagorovsky, Vladimir vs Kuznetsov, Andrey — 0-1 — Soviet Union
1968 — Kliavin vs Zhuravlev, Aleksandr — 1-0 — ?
1968 — Klavins, Janis vs Zhuravliov, Valerij — 1-0 — USSR

8…Qf6 — 0.7% (7 parties)

2005 — Hegedus, Gyula vs Marchis, Arghil — 1-0 — Ajka
2005 — Balazs, Attila vs Szebeni-Janosi, Pal — 1-0 — Miercurea Ciuc ROM
2006 — Radovic, Gavrilo vs Danojlic, Petar — 1-0 — Belgrade SRB
2012 — Pares Peris, Jordi vs Walter Travella, German — 1-0 — Barcelona ESP
2017 — Gultresa Boada, Isaac vs Meyer, Kuno — 1-0 — Igualada

8…Bc7 — 0.6% (6 parties)

1996 — Vaculik, Martin vs Zakoucky, Otto — 1-0 — Klatovy CZE
1996 — Hendrick, John Kristan vs Ridge, Glyn W — 1-0 — San Antonio, TX USA
2000 — Hlas, Jan vs Chrastina, M — 1-0 — Slovakia
2003 — Robles Asuncion Lo German vs Gris Catala, Manuel — 0-1 — Manises
2011 — Horak, Mir2 vs Sojka, Oldrich — 1-0 — Brno CZE

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d7
Chaînes	● b2→c3, c3→d4	● b7→c6, d7→c6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	—
Cases faibles	—	—
Centre	● e5 (1v0)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Ba4	● Ba4 Actif (mob. 4)
Bb6		● Bb6 Actif (mob. 4)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	3 (b1, c1, a1)	4 (g8, c8, a8, h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Au centre !
Droits de roque	—	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c3-c4, ● d4-d5, ● f2-f3	● …c6-c5, ● …d7-d6, ● …d7-d5, ● …f7-f6, ● …f7-f5

Partie
1947 URS Ch, semi final – Round 9 – Zagorovsky, Vladimir – 1-0 – Kirillov, Vladimir – G54 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. Re1 Nf6 10. Bg5 h6
1949 Moscow RUS – Round 1 – Panov, Vasily – 1-0 – Bonch-Osmolovsky, Mikhail – G16 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. Bc2 Nf6 10. Nd2 Bg4
1950 Dubrovnik olm – Round 13 – Horowitz, Albert Israel – 1/2-1/2 – Canal, Esteban – G194 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. dxe5 dxe5 10. Qxd8+ Bxd8
1952 Rio de Janeiro – Round 7 – Bauza, Lorenzo – 1/2-1/2 – Dantas, Nelson – G37 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 exd4 9. cxd4 Ne7 10. Nc3 O-O
1952 Vienna 5152 – Round 7 – Lokvenc, Josef – 1/2-1/2 – Canal, Esteban – G4 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. dxe5 dxe5 10. Qxd8+ Bxd8
1953 Bucharest – Round 4 – Stoltz, Gosta – 1/2-1/2 – O'Kelly de Galway, Alberic – G41 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. Be3 Nf6 10. dxe5 dxe5
1954 URS Team Ch – Round 7 – Gipslis, Aivars – 1/2-1/2 – Goglidze, Viktor – G127 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. d5 Ne7 10. Na3 O-O
1955 Prague tm – Round 2 – Dworzynski, Roman – 1-0 – Novak, Zbynek – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. f4 Nf6 10. Bc2 O-O
1956 Leningrad ch-URS – Round 1 – Spassky, Boris Vasily – 1/2-1/2 – Tolush, Alexander V – G102 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. Be3 Nf6 10. dxe5 dxe5
1957 Sombor – Round 19 – Nedeljkovic, Srecko M – 1/2-1/2 – Vukovic, Sava – G186 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. Qd3 Nf6 10. Bg5 h6
1957 URS-ch24 – Round 21 – Bannik, Anatolij – 1/2-1/2 – Tarasov, Vitaly – G15 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. dxe5 dxe5 10. Qxd8+ Bxd8
1958 Clare Benedict Cup 05th – Round 1 – Farre Mallofre, Miguel – 0-1 – Keller, Dieter – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. Be3 Nf6 10. Nd2 Ng4
1958 COL Ch – Round 2 – Alvarez Martin, Pedro – 1/2-1/2 – De Greif, Boris – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. dxe5 dxe5 10. Qxd8+ Bxd8
1961 Wch U20 fin-A – Round 3 – Westerinen, Heikki M.J. – 1/2-1/2 – Zuidema, Coen – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. Be3 Nf6 10. Nd2 O-O
1962 GDR Ch Gera GER – Round 5 – Fuchs, Reinhart – 1-0 – Csulits, Anton – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. d5 Ne7 10. Na3 O-O
1962 LAT Ch – Round ? – Klovans, Janis – 1-0 – Zhuravlev, Valery Ivanovich – G60 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 exd4 9. cxd4 d5 10. exd5 Qxd5
1963 GDR Ch Aschersleben GER – Round 10 – Fuchs, Reinhart – 1/2-1/2 – Starck, Bodo – G56 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. dxe5 dxe5 10. Qxd8+ Bxd8
1963 GDR Ch Aschersleben GER – Round 4 – Pietzsch, Wolfgang – 1-0 – Starck, Bodo – G23 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. dxe5 dxe5 10. Qh5 Qf6
1964 Burevestnik CC Ch – Round ? – Zagorovsky, Vladimir – 0-1 – Kuznetsov, Andrey – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 exd4 9. cxd4 d5 10. e5 Qh4
1966 La Habana olm fin-C – Round 2 – Calero, Ivan – 1/2-1/2 – Norcia, Federico – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. dxe5 dxe5 10. Qxd8+ Bxd8
1967 Reggio Emilia 6768 10th – Round 11 – Kurajica, Bojan – 1-0 – Canal, Esteban – G39 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. Kh1 Qh4 10. d5 Nf6
1968 Netanya-A – Round 9 – Yanofsky, Daniel Abraham – 1/2-1/2 – Bernstein, Yaacov – G53 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 exd4 9. cxd4 d5 10. e5 Qh4
1968 USSR – Round 1 – Klavins, Janis – 1-0 – Zhuravliov, Valerij – G44 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 exd4 9. cxd4 d5 10. exd5 Qxd5
40. Olympiad Open 2012 – Round 11.13 – Mastrovasilis, Dimitrios – 0-1 – Godena, Michele – G589 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 5. Nxd4 Bxd4 6. c3 Bb6 7. d4 c6 8. Ba4 d6 9. d5 Ne7 10. Bg5 f6

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