C60s — Spanish: Cozio, 4.O-O

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

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : Bb5 actif, paire de fous.
Faiblesses adverses : Bc8 enfermé, Bf8 enfermé, roi noir au centre.
Problèmes : Bc1 enfermé, 3 pièces non développées (B1, C1, A1).
Plans :
● Nbd2 — Développer Nb1
● d3 — Libérer Bc1
● h3 — Empêcher ...Bg4
● c3 — Préparer d4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte d4, paire de fous.
Faiblesses adverses : Bc1 enfermé.
Problèmes : roi au centre, Bc8 enfermé, Bf8 enfermé, 4 pièces non développées (C8, F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Bd6 — Développer Bf8
● ...Bg4 — Clouer Nf3
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C60s — Spanish: Cozio

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.O-O

Eval: [+0.49]

Les coups candidats

4…g6 — 53.5% (2423 parties) →

Ambassadeurs : Chan, Yi Ren Daniel (12x), Gromov, Sergey Vasilievich (12x), Obukhov, Gennady (12x), García Rodríguez, Ildefonso (11x), De Greif, Boris (10x), Arkhipov, Sergey (10x), Zolnierowicz, Krzysztof (10x), Dreev, Aleksey (9x)

4…a6 — 20.8% (942 parties)

Ambassadeurs : Babarykin, Viktor Aleksandrovi (15x), Schneider, Hans-Juergen Prof Dr (12x), Schneider, Hans-J. (12x), Blatny, Pavel (11x), Mori, Roberto (8x), Tolnai, Rudolf (8x), Costa, Hermes (7x), Vio, Mauro (6x)

4…d6 — 12.6% (569 parties)

Ambassadeurs : Thorfinnsson, Bjorn (11x), Ginzburg, Maximiliano (10x), Díaz Hermida, José Luis (9x), Nitsche, Dirk, Dr. (8x), Lagerman, Robert (8x), Shipman, Walter (6x), Otero Acosta, Diasmany (6x), Vukovic, Ivo (6x)

4…Ng6 — 11.3% (513 parties)

Ambassadeurs : Csapo, Zoltan (33x), Shipman, Walter (13x), Ask, Josef (10x), Klaric, Zlatko (9x), Shipman, Joseph L (8x), Pechac, Jergus (7x), Francois, Jean Claude (6x), Walter, Ema (6x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…g6	4…a6	4…d6	4…Ng6
<1800	264	46%	32%	12%	7%
1800-2200	1567	61%	17%	11%	10%
2200-2600	1380	61%	11%	11%	17%
2600+	45	60%	4%	—	36%

Évolution par décennie (% des parties)

Décennie	N parties	4…g6	4…a6	4…d6	4…Ng6
1850s	1	—	—	100%	—
1860s	9	22%	—	11%	67%
1870s	2	100%	—	—	—
1900s	4	100%	—	—	—
1910s	1	100%	—	—	—
1920s	2	50%	—	—	50%
1930s	4	75%	25%	—	—
1940s	2	50%	—	50%	—
1950s	8	62%	12%	12%	12%
1960s	21	48%	29%	14%	5%
1970s	102	38%	28%	17%	15%
1980s	159	42%	17%	19%	19%
1990s	669	46%	21%	21%	10%
2000s	1207	51%	24%	15%	8%
2010s	1859	62%	21%	9%	7%
2020s	483	46%	13%	5%	35%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…g6	62%	46%	▼ -16.3%
4…a6	21%	13%	▼ -7.4%
4…d6	9%	5%	▼ -4.1%
4…Ng6	7%	35%	▲ +28.4%

Joueurs célèbres

Champions du monde dans cette position

Lasker, Emanuel — 2 parties
Smyslov, Vladimir — 2 parties
Karpov, Anatoly — 2 parties
Carlsen, Magnus — 2 parties
Alekhine, Alexander — 1 partie
Anand, Viswanathan — 1 partie
Kramnik, Vladimir — 1 partie
Hou, Yifan — 1 partie

Parties historiques

4…g6 — 53.5% (2423 parties)

1861 — Boden, Samuel S vs Paulsen, Louis — 0-1 — Bristol ENG
1867 — Rosenthal, Samuel vs Neumann, Gustav — 0-1 — Paris FRA
1876 — Davidson, Harel vs Roberts Trinidad, Arthur Daniel — 1/2-1/2 — Philadelphia, PA USA
1876 — Elson, Jacob vs Judd, Max — 0-1 — Philadelphia, PA USA
1902 — Capablanca, Jose vs Cusva de Corzo, Esperanza — 1-0 — Havana CUB

4…a6 — 20.8% (942 parties)

1938 — Beltikhine, E. vs Arnold Klein Mudidi — 0-1 — Nice FRA
1952 — Grivainis, Konstantin vs Dzelme, R — 1-0 — Latvian Exiles 5254
1961 — Mertens, Gabriel vs Hansen, Aage — 1-0 — Meschede
1969 — Wall, Bill vs Wall, William R — 1-0 — ?
1969 — Spassky, Boris V. vs Larsen, Benjamin Holsko — 1-0 — Palma de Majorca ESP

4…d6 — 12.6% (569 parties)

1855 — Brien, Robert vs Falkbeer, Ernst — 1-0 — London ENG
1865 — Neumann, Gustav vs Anderssen, Adolf — 0-1 — Berlin GER
1940 — Alekhine, Alexander vs Barros de Carvalho, Adson Luis — 1-0 — Lisabon
1958 — Bobkov, Aleksandr vs Khodor, Rim — 1-0 — ?
1968 — Heim, Sverre vs Olsen, Kjell M B — 1-0 — Tromsoe

4…Ng6 — 11.3% (513 parties)

1864 — Neumann, Gustav vs Anderssen, Adolf — 0-1 — Breslau GER
1864 — Schallopp, Emil vs Anderssen, Adolf — 0-1 — Berlin GER
1865 — Neumann, Gustav vs Anderssen, Adolf — 1-0 — Berlin GER
1865 — Neumann, Gustav vs Anderssen, Adolf — 1-0 — Berlin GER
1866 — MacKenzie, George H vs Delmar, Eugene — 0-1 — New York (New York CC)

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● d4 (2v1)
Cases faibles	—	—
Centre	—	● d4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bb5	● Bb5 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	3 (b1, c1, a1)	4 (c8, f8, 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	● c2-c3, ● d2-d3	● …d7-d6, ● …d7-d5, ● …f7-f6, ● …f7-f5

Partie
1926 USA sim – Round ? – Lasker, Emanuel – 1-0 – Rosen Vivek Murugesan – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. c3 Bc5 6. d4 exd4 7. cxd4 Be7 8. d5 Nce5 9. Nxe5 Nxe5 10. f4 Ng6
1956 Moscow olm prel – Round 3 – Pilnik, Herman – 1-0 – Kremer, Paul – G99 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. c3 Be7 6. d4 exd4 7. cxd4 O-O 8. Nc3 a6 9. Bc4 d6 10. Ne1 Kh8
1975 URS Team Ch – Round 4 – Fatalibekova, Elena – 1/2-1/2 – Vardanyan, Marlena – G397 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. d4 exd4 6. Nxd4 Bc5 7. c3 O-O 8. Be3 Bb6 9. Nd2 Nxd4 10. cxd4 c6
41. Olympiad Open 2014 – Round 4.17 – Battulga, Namkhai – 1/2-1/2 – Stevic, Hrvoje – G261 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. d4 exd4 6. Nxd4 Bc5 7. Nf5 O-O 8. Nc3 a6 9. Bc4 d6 10. Qh5 Kh8
Amber-blindfold 02nd 1993 – Round 1 – Anand, Viswanathan – 1-0 – Short, Nigel D – G1 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. c3 d6 6. d4 a6 7. Ba4 Bd7 8. d5 Nb8 9. c4 Be7 10. Nc3 O-O
FIDE GP 2010 – Round 7 – Leko, Peter – 1/2-1/2 – Ivanchuk, Vasyl – G42 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. c3 a6 6. Ba4 d6 7. d4 Bd7 8. d5 Nb8 9. c4 Be7 10. Nc3 h6
Interpolis 1978 – Round 7 – Dzindzichashvili, Roman – 1/2-1/2 – Larsen, Bent – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. d4 exd4 6. Nxd4 Bc5 7. Nb3 Bb6 8. Nc3 O-O 9. Nd5 d6 10. a4 Be6
World Blitz 2016 – Round 1.38 – Sanal, Vahap – 1-0 – Howell, David W L – G30 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. c3 a6 6. Ba4 d5 7. d4 dxe4 8. Nxe5 Nxe5 9. dxe5 Qxd1 10. Rxd1 Bd7
World Blitz 2019 – Round 12.52 – Murzin, Volodar – 1/2-1/2 – Salgado Lopez, Ivan – G830 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. d4 exd4 6. Nxd4 Bc5 7. Nf5 O-O 8. Nc3 d6 9. Bxc6 bxc6 10. Na4 Bb6
World Blitz 2021 – Round 5.38 – Firouzja, Alireza – 1-0 – Theodorou, Nikolas – G287 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O a6 5. Bc4 Ng6 6. c3 Be7 7. d4 d6 8. Be3 O-O 9. Nbd2 Nh4 10. h3 Nxf3+
World Blitz 2022 – Round 1.61 – Gurel, Ediz – 1/2-1/2 – Vokhidov, Shamsiddin – G48 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. c3 a6 6. Ba4 d5 7. d3 Be7 8. exd5 Qxd5 9. Bb3 Qd8 10. Qe2 O-O
World Blitz 2023 – Round 14.4 – Yu, Yangyi – 1/2-1/2 – Nihal Sarin – G814 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. c3 d5 6. d3 Be7 7. Qa4 O-O 8. Bxc6 bxc6 9. Qxc6 Be6 10. Be3 1/2-1/2
World Blitz 2023 – Round 4.2 – Smirnov, Anton – 0-1 – Artemiev, Vladislav – G211 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. d4 exd4 6. Nxd4 Bc5 7. Nxc6 bxc6 8. Bd3 O-O 9. Nc3 a5 10. Qh5 d6
World Blitz 2023 – Round 8.18 – Pranesh M – 1-0 – Aditya Tari – G452 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 5. c3 d5 6. Qa4 dxe4 7. Bxc6+ bxc6 8. Qxc6+ Bd7 9. Qxe4 f5 10. Qe2 Bd6

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