C60r — Spanish: Cozio, 4.O-O

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.c3 *   ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bB
bQ
bK
bB
bR
bP
bP
bP
bP
bN
bP
bP
bP
bN
wBFou actif — mobilité 7
bPPion sous pression
wPPion central
wP
wN
wP
wP
wP
wP
wP
wP
wR
wN
wB
wQ
wK
wR
abcdefgh
Plans. d4 (Occuper le centre — 35 % des parties) ; Ba4 (Clouer c6 — 32 % des parties) ; Nxe5 (Cavalier centralisé en e5 — 12 % des parties) ; O-O (Mettre le roi en sécurité, connecter les tours — 10 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wK
wQ
wB
wN
wR
wP
wP
wP
wP
wP
wP
wN
wP
wP
bPPion sous pression
wB
bN
bP
bP
bP
bN
bP
bP
bP
bP
bR
bB
bK
bQ
bB
bR
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Plans. ...a6 (Préparer expansion aile dame — 35 % des parties) ; ...g6 (Préparer le fianchetto — 30 % des parties) ; ...d5 (Occuper le centre — 18 % des parties) ; ...d6 (Libérer Bc8 — 14 % des parties).
Avantages
Faiblesses
Diagonale active
Plans

Structure de pions
♔ Blancs ♚ Noirs
Pions doublés
Pions isolés
Arriérés
Chaînes ● b2→c3, d2→c3
Passés
Majorité
Cases
♔ Blancs ♚ Noirs
Cases fortes
Cases faibles
Centre
Colonnes et diagonales
♔ Blancs ♚ Noirs
Pièces
♔ Blancs ♚ Noirs
Bc1 ● Bc1 Non développé (mob. 0)
Bb5 ● Bb5 Actif (mob. 7)
Bc8 ● Bc8 Non développé (mob. 0)
Bf8 ● Bf8 Non développé (mob. 0)
Paire de fous ● Oui ● Oui
Non développées 4 (● b1, ● c1, ● a1, ● h1) 4 (● 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 fermé
Ruptures ● d2-d4 ● …d7-d5, ● …f7-f5
Partie
1905 It (Men) Barmen GER – Round 1 – John Wade Wec-Nyin – 1-0 – Wolf, Hans-Josef – G52
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 d5 5. Nxe5 dxe4 6. d4 exd3 7. Qf3 Be6 8. Nxc6 Nxc6 9. Bxc6+ bxc6 10. Qxc6+ Bd7
1938 Ljubljana – Round 5 – Steiner, Lajos – 1/2-1/2 – Tartakower, Savielly – G39
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 d5 5. Nxe5 dxe4 6. d4 Bd7 7. Nxd7 Qxd7 8. Qe2 a6 9. Ba4 f5 10. O-O O-O-O
1958 BUL Ch – Round ? – Kaikamdzozov, Jivko – 0-1 – Filchev, Rusko – G54
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 a6 5. Ba4 g6 6. d4 Bg7 7. d5 Na7 8. d6 cxd6 9. Qxd6 Nb5 10. Bxb5 axb5
1968 Belgrade – Round 1 – ? – 1-0 – Dely, Peter – G46
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 g6 5. d4 exd4 6. cxd4 d5 7. exd5 Nxd5 8. O-O Bg7 9. Re1+ Be6 10. Bg5 Qd6
1969 POL Ch 26th – Round 14 – Schmidt, Wlodzimierz – 1/2-1/2 – Sydor, Andrzej – G71
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 g6 5. d4 Bg7 6. dxe5 Nxe5 7. Nxe5 Bxe5 8. O-O c6 9. Bc4 O-O 10. Bh6 Re8
1969 US Open – Round 11 – Grefe, John A – 0-1 – Shipman, Walter – G31
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 d6 5. d4 Bd7 6. Nbd2 Ng6 7. Nf1 Be7 8. Ne3 O-O 9. O-O Nxd4 10. Nxd4 exd4
1969 YUG Ch 24th – Round 15 – Ostojic, Predrag – 1-0 – Deze, Anton – G56
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 d5 5. Nxe5 dxe4 6. d4 exd3 7. Qf3 Be6 8. O-O Qd5 9. Qxd5 Bxd5 10. Nxc6 Bxc6
1975 URS Team Ch – Round 4 – Pronina, Larissa – 0-1 – Vardanyan, Marlena – G399
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 Ng6 5. O-O Be7 6. d3 O-O 7. Be3 d6 8. Nbd2 f5 9. exf5 Bxf5 10. h3 a6
30. ECC Open 2014 – Round 6.3 – Zhigalko, Andrey – 0-1 – Morozevich, Alexander – G128
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 a6 5. Ba4 g6 6. d4 exd4 7. cxd4 b5 8. Bc2 d5 9. exd5 Nxd5 10. O-O Bg7
42. Olympiad 2016 – Round 7.25 – Hossain, Enamul – 1-0 – Ivanisevic, Ivan – G503
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 a6 5. Ba4 g6 6. d4 exd4 7. cxd4 b5 8. Bb3 Bg7 9. d5 Na5 10. Bc2 O-O
ch-Wereld Teams 1989 – Round 1 – Chandler, Murray G – 1/2-1/2 – Boudiba, Mahfoud – G59
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 g6 5. d4 exd4 6. cxd4 d5 7. exd5 Nxd5 8. O-O Bg7 9. Re1+ Be6 10. Bg5 Qd6
Moscow 1975 – Round 1 – Tal, Mikhail – 1-0 – Garcia Martinez, Silvino – G38
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 a6 5. Ba4 b5 6. Bb3 d5 7. d3 h6 8. exd5 Nxd5 9. Qe2 Be7 10. Nxe5 Nxe5
Olympiad 2002 – Round 3 – Kostenko, Petr – 1-0 – Benjamin, Joel – G84
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 d6 5. d4 Bd7 6. Qb3 Na5 7. Qa4 Nac6 8. Qb3 Na5 9. Bxd7+ Qxd7 10. Qc2 Ng6
Olympiad 2002 – Round 8 – Granda Zuniga, Julio E – 1-0 – Md Nur Mehtab, Nehal – G271
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 a6 5. Ba4 g6 6. d4 Bg7 7. d5 Na5 8. Bc2 d6 9. Nbd2 b5 10. b3 c6
World Blitz 2007 – Round 5 – Anand, Viswanathan – 1/2-1/2 – Dreev, Aleksey – G48
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 d5 5. d4 exd4 6. Nxd4 dxe4 7. Qe2 Bd7 8. Nxc6 Bxc6 9. Bxc6+ Nxc6 10. Qxe4+ Qe7
World Blitz 2009 – Round 7 – Kosteniuk, Alexandra – 0-1 – Aronian, Levon – G71
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 a6 5. Ba4 g6 6. d4 exd4 7. cxd4 b5 8. Bb3 Bg7 9. O-O O-O 10. Nc3 d6
World Blitz 2018 – Round 14.51 – Vishnu Prasanna, Vrasanna. V – 0-1 – Motylev, Alexander – G851
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 d5 5. Nxe5 dxe4 6. Qe2 Be6 7. O-O Qd5 8. Nxc6 Nxc6 9. Na3 Bxa3 10. bxa3 O-O
World Blitz 2022 – Round 14.55 – Zhalmakhanov, Ramazan – 0-1 – Vokhidov, Shamsiddin – G766
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 d5 5. Nxe5 dxe4 6. Nxc6 bxc6 7. Bc4 Nf5 8. O-O Be7 9. d3 Nd6 10. Bb3 Ba6

C60r — Spanish: Cozio (1905)
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.c3
Les coups candidats
4…a6 — 34.8% (675 parties)
Ambassadeurs : Lazic, Miroljub (12x), Marholev, Dimitar (8x), Rodriguez Cespedes, Amador (4x), Elter, Sophia (4x), Williams, Rufus H. (4x), Schoeffler, Herta (3x), Bilafer, Nedjeljko (3x), Shurakov, Denis (3x)
4…g6 — 29.8% (578 parties)
Ambassadeurs : O'Donnell, Tom (4x), Alaev, Pavel (4x), Pachon Gutierrez, Adriana Paola (4x), Sanz Alonso, Francisco Javier (3x), Soppela, Jouni (3x), Skuhala, Jernej (3x), Borisova, Ekaterina (3x), ? (2x)
4…d5 — 17.5% (339 parties)
Ambassadeurs : Franciskovic, Vinko (5x), Gerber, Vladimir (3x), De Greif, Boris (3x), Karayev, Assylkhan (3x), Stefanova, Antoaneta (3x), De Haro, Martim Afonso Palma (3x), Kolosowski, Mateusz (3x), Rubinetti, Jorge (2x)
4…d6 — 13.5% (262 parties)
Ambassadeurs : Vukovic, Ivo (6x), Benjamin, Joel (5x), Nitsche, Dirk, Dr. (5x), Mona, Khaled (5x), Thorfinnsson, Bjorn (4x), Dubrovic, Mihovil (4x), Elter, Sophia (2x), Ardiansyah, Haji (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…a6 4…g6 4…d5 4…d6
<1800 198 40% 31% 7% 17%
1800-2200 709 31% 36% 16% 11%
2200-2600 728 32% 26% 25% 15%
2600+ 14 29% 14% 50% 7%
Évolution par décennie (% des parties)
Décennie N parties 4…a6 4…g6 4…d5 4…d6
1950s 5 40% 20% 20% 20%
1960s 12 25% 25% 33% 17%
1970s 56 46% 25% 16% 11%
1980s 54 43% 26% 13% 13%
1990s 261 35% 26% 15% 20%
2000s 468 32% 33% 10% 20%
2010s 800 38% 33% 15% 10%
2020s 284 27% 20% 39% 7%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…a6 38% 27% ▼ -10.9%
4…g6 33% 20% ▼ -12.5%
4…d5 15% 39% ▲ +23.5%
4…d6 10% 7% ▼ -2.7%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 2 parties
Anand, Viswanathan — 1 partie
Hou, Yifan — 1 partie
Parties historiques
4…a6 — 34.8% (675 parties)
1957 — OBrien, Erik Michael vs Brent, Eric — 1-0 — Sonoma
1958 — Kaikamdzozov, Jivko vs Filchev, Rusko — 0-1 — Sofia BUL
1961 — Pasteiner, Johann vs Hansen, Aage — 1-0 — Meschede
1964 — Benko, Pal vs Sawayer — 1-0 — New York simul
1964 — Benko, Pal vs Connor Sawyer — 1-0 — ?
4…g6 — 29.8% (578 parties)
1958 — Mack, Arthur vs Diebold, Robert — 0-1 — ?
1964 — Goeth, Jiri vs Travnicek, Petr — 0-1 — CSR-ch Army Prague CZE
1968 — ? vs Dely, Peter — 1-0 — Belgrade SRB
1969 — Schmidt, Wlodzimierz vs Sydor, Andrzej — 1/2-1/2 — Lublin POL
1972 — Veroci, Zsuzsa vs Nicolau, Alexandra — 0-1 — Skopje ol women
4…d5 — 17.5% (339 parties)
1957 — Jursevskis, Walter vs Ackermann, Gustav — 1-0 — Vancouver BC CAN
1963 — Timoshenko, Anatoly vs Gerber, Vladimir — 0-1 — Kiev UKR
1963 — Timoshenko, Aleksandr vs Gerber, Vladimir — 0-1 — ?
1965 — Poliak, Evsey vs Gerber, Vladimir — 1/2-1/2 — ?
1969 — Ostojic, Predrag vs Deze, Anton — 1-0 — Novi Travnik
4…d6 — 13.5% (262 parties)
1956 — Konig, Imre vs Abigail Wanjiru Green — 1/2-1/2 — San Quentin, CA
1968 — Flohr, Salo vs Packroff, Hermann — 1/2-1/2 — Krumpa
1969 — Grefe, John A vs Elter, Sophia — 0-1 — US Open
1974 — Diaz, Joaquin vs Balshan, Amikam — 1-0 — Teesside ENG
1975 — Stanciu, Traian vs Lutikov, Anatoly S — 1/2-1/2 — Bucharest ROU

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