C78g — Spanish: 5.O-O b5 6.Bb3 Be7

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Be7 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte d5.

Atouts. Les Blancs s'appuient sur la case forte d5, un fou actif en b3 et la paire de fous.

Côté adverse. Le fou enfermé en c8 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b1, le fou c1 et la tour a1).

Plans. d3 (Libérer Bc1) ; h3 (Empêcher ...Bg4) ; c3 (Préparer d4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte b4….

Atouts. Les Noirs s'appuient sur les cases fortes b4 et d4, un fou actif en e7 et la paire de fous.

Côté adverse. Le fou enfermé en c1 et une pièce en prise (le pion en e4).

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le fou c8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...d6 (Libérer Bc8) ; ...Na5 (Attaquer Bb3) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● a6→b5
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (2v1)	● b4 (2v0), ● d4 (2v1)
Cases faibles	—	—
Centre	● d5 (2v1)	● d4 (2v1), ● e4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bb3	● Bb3 Actif (mob. 5)
Be7		● Be7 Actif (mob. 5)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	3 (● 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	● c2-c3, ● d2-d3	● …d7-d6, ● …d7-d5

Partie
1913 New York National – Round 4 – Janowski, Dawid – 1-0 – Kupchik, Abraham – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 b4 8. d4 Nxe4 9. Nxe5 Nxe5 10. dxe5 Bb7
1916 Nordisk Skakforbund – Round 4 – Nyholm, Gustav – 0-1 – Svensson, SO. – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. Qe2 b4 9. Bd5 Nd4 10. Nxd4 Nxd5
1926 Chicago – Round 3 – Jaffe, Charles – 1-0 – Showalter, Jackson – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Rb8 8. d4 exd4 9. e5 Ne4 10. Nxd4 Nxd4
1937 Prague – Round 1 – Keres, Paul – 1-0 – Zinner, Emil – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Rb8 8. Re1 d6 9. axb5 axb5 10. c3 Bg4
1942 USA Ch – Round 6 – Kashdan, Isaac – 1-0 – Altman, Benjamin – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Rb8 8. axb5 axb5 9. Qe2 d6 10. c3 O-O
1944 Tbilisi – Round 1 – Sorokin, Nikolay – 0-1 – Kasparian, Genrikh – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 b4 8. Bd5 Bb7 9. d4 exd4 10. Nxd4 Nxd5
1950 Bled – Round 1 – Fuderer, Andrija – 0-1 – Rellstab, Ludwig – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. Qe2 O-O 9. c3 d5 10. axb5 dxe4
1951 Mar del Plata zt – Round 23 – De Souza Mendes, Joao – 1/2-1/2 – Wexler, Bernardo – G235 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Rb8 8. axb5 axb5 9. Qe2 O-O 10. c3 d5
1952 Helsinki olm – Round 1 – Enevoldsen, Jens – 1-0 – Lorson, Gerhard – G241 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. d3 d6 9. Nc3 b4 10. Ne2 Na5
1952 Hungary Ch – Round 1 – Vajda, Arpad – 1/2-1/2 – Pogats, Jozsef Jr. – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. c3 O-O 8. d4 d6 9. dxe5 Nxe5 10. Nxe5 dxe5
1954 Zonal – Round 2 – Aitken, James – 1/2-1/2 – Bouwmeester, Hans – G4 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. axb5 axb5 9. Rxa8 Qxa8 10. Nc3 b4
1956 Moskou olm – Round 1 – Bhend, Edwin – 1/2-1/2 – Lorson, Gerhard – G66 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. d3 d6 9. Ng5 O-O 10. f4 Nd4
1957 FRG Ch U20 – Round 11 – Gstettenbauer, Harry – 0-1 – Pfleger, Helmut, Dr. – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Bd5 Bb7 8. d3 d6 9. a4 O-O 10. c4 bxc4
1957 URS Ch sf – Round 9 – Ragozin, Viacheslav – 0-1 – Tolush, Alexander V – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 bxa4 8. Rxa4 O-O 9. Qe2 d6 10. c3 Nd7
1958 GDR Ch Schkopau GER – Round 10 – Franz, Joachim – 1/2-1/2 – Pietzsch, Wolfgang – G60 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. axb5 axb5 9. Rxa8 Qxa8 10. Nc3 b4
1958 Torneo de las Americas 1st – Round 6 – Cuellar Alfredo – 1/2-1/2 – Ader Hausman, Walter – G33 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. c3 Nxe4 8. Bd5 Nf6 9. Bxc6 dxc6 10. Nxe5 Qd5
1959 CSR Ch – Round 3 – Jares, Jakub – 0-1 – Hort, Vlastimil – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. axb5 axb5 9. Rxa8 Qxa8 10. Nc3 Qa5
1959 United States Open Championship – Round 7 – Osbun, Erik – 1-0 – Vincent, Raymond – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Rb8 8. axb5 axb5 9. Qe2 O-O 10. c3 b4
1960 Olympiad prel I – Round 4 – Matanovic, Aleksandar – 1-0 – Camilleri, Henry – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. d3 O-O 9. Nc3 b4 10. Nd5 Nxd5
1960 UKR Ch sf – Round 16 – Poliak, Evsey – 0-1 – Ousatchi, Mark – G101 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. d3 O-O 9. Nc3 b4 10. Nd5 Nxd5
1962 Athens simul 1 – Round 1.21 – O'Kelly de Galway, Alberic – 0-1 – Psallidas, H. – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. c3 d6 8. a4 Bg4 9. h3 Bh5 10. Re1 O-O
1963 Enschede zt – Round 1 – Aitken, James – 1/2-1/2 – Mazzoni, Guido – G30 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. c3 O-O 8. d4 exd4 9. e5 Ne8 10. cxd4 d5
1963 P.C.C. A-P-A A6 – Round ? – Collins, Richard Arnold – 0-1 – Jones, A F. – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 b4 8. d4 O-O 9. Nxe5 Nxe4 10. Qf3 Nf6
1964 FRG Ch qual 9th – Round 11 – Huebner, Robert – 1-0 – Schwenkreis, Thomas – G38 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Rb8 8. axb5 axb5 9. Re1 d6 10. c3 Bg4
1964 FRG Ch qual 9th – Round 6 – Huebner, Robert – 1-0 – Hodakowsky, Georg – G20 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Bb7 8. Qe2 O-O 9. c3 d6 10. d4 Nd7
1965 Hastings ch-BCF – Round 1 – Littlewood, Norman – 1-0 – Ansell, John – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 b4 8. Re1 d6 9. c3 O-O 10. h3 Rb8
1966 BRA-ch33 – Round 3 – Mangini, Jose Henrique de Mello – 1/2-1/2 – De Pinto Paiva, Jose – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 b4 8. d3 O-O 9. c3 d5 10. Nbd2 a5
1967 Vrnjacka Banja zt – Round 1 – Fuchs, Reinhart – 1-0 – Bilyap, Siracettin – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. a4 Rb8 8. d4 d6 9. c3 b4 10. d5 Na5

C78g —

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Be7

Eval: [+0.43]

Les coups candidats

7.Re1 — 76.5% (12363 parties) →

Ambassadeurs : Telepnev, Igor Viktorovich (36x), Sanner, Zdzislaw (32x), Jansen, Joop H E P (31x), Kulon, Klaudia (26x), Burridge, Raymond John (25x), Kotzem, Ernst (23x), ? (22x), Adamowicz, Katarzyna (21x)

7.d4 — 10.1% (1633 parties) →

Ambassadeurs : Wiesinger, Johann (13x), Sanner, Zdzislaw (11x), Zakharov, Oleg (9x), Wharrier, Jonathon A (9x), Dely, Peter (6x), Darga, Klaus (6x), Telepnev, Igor Viktorovich (6x), Gudzovaty, Yury Vasilievich (6x)

7.d3 — 4.4% (718 parties) →

Ambassadeurs : Lorenz, Oda (5x), Schmidek, Emil (4x), Dukic, Zachary (4x), Kokoszczynski, Jan (4x), Davies , Aiden (3x), Severne E (3x), Meszaros, Michal (3x), Palozi, Paulo Ricardo (3x)

7.c3 — 3.4% (544 parties)

Ambassadeurs : Konicek, Josef (3x), Barboza, Mauro (3x), Haluska J (2x), Herbrechtsmeier, Christof (2x), De Los Heros Torres, Francisco (2x), Hjartarson, Johann (2x), Sokolov, Ivan (2x), Hazir, Svetozar (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.Re1	7.d4	7.d3	7.c3
<1800	907	76%	7%	7%	6%
1800-2200	7006	78%	9%	5%	3%
2200-2600	3781	72%	14%	6%	2%
2600+	23	52%	22%	4%	9%

Évolution par décennie (% des parties)

Décennie	N parties	7.Re1	7.d4	7.d3	7.c3
1850s	1	—	—	—	—
1880s	2	—	50%	50%	—
1890s	3	—	100%	—	—
1900s	10	40%	40%	10%	—
1910s	28	46%	18%	25%	—
1920s	25	52%	20%	—	4%
1930s	24	42%	8%	8%	—
1940s	58	50%	19%	—	2%
1950s	247	60%	18%	3%	4%
1960s	401	64%	22%	1%	2%
1970s	380	71%	19%	1%	3%
1980s	536	78%	12%	2%	4%
1990s	2279	80%	7%	2%	3%
2000s	4910	82%	7%	3%	4%
2010s	6188	75%	10%	6%	4%
2020s	1076	67%	15%	11%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.Re1	75%	67%	▼ -7.7%
7.d4	10%	15%	▲ +5.0%
7.d3	6%	11%	▲ +4.2%
7.c3	4%	3%	▼ -0.5%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 6 parties
Alekhine, Alexander — 4 parties
Carlsen, Magnus — 4 parties
Anand, Viswanathan — 3 parties
Karpov, Anatoly — 3 parties
Karpov, Aleksandr — 2 parties
Kasparov, Garry — 2 parties
Lasker, Emanuel — 1 partie
Euwe, Max — 1 partie
Smyslov, Vladimir — 1 partie
Hou, Yifan — 1 partie

Parties historiques

7.Re1 — 76.5% (12363 parties)

1904 — Schlechter, Carl vs Gottschall, D — 1-0 — Coburg
1905 — Macfarlane, William Nicolaas vs Greenhalgh, William Rawson — 0-1 — St Georges CC
1906 — Przepiorka, Dawid vs Fahrni, Hans — 1-0 — Nuerenberg GER
1909 — Perlis, Julius vs Burn, Allan — 1-0 — St Petersburg RUS
1910 — Gunston, William H vs Dawbarn, Climenson Yelverton — 1-0 — Oxford ENG

7.d4 — 10.1% (1633 parties)

1889 — Judd, Max vs Delmar, Eugene — 0-1 — New York, NY USA
1890 — Fleissig, Bernhard vs Englisch, Berthold — 1-0 — Vienna AUT
1897 — D Marco, Gianni vs Englisch, Berthold — 1/2-1/2 — Berlin GER
1897 — Suechting, Hugo vs Englisch, Berthold — 1/2-1/2 — Berlin GER
1901 — Johansson, K Sr vs Schlichtkrull, CE. — 1/2-1/2 — Goteborg SWE

7.d3 — 4.4% (718 parties)

1883 — Noa, Joseph vs Englisch, Berthold — 0-1 — London ENG
1904 — Johnston, Paul vs Clement, CA. — 0-1 — CAN
1913 — Liebenstein H vs Chajes, Oscar — 0-1 — New York, NY USA
1914 — Davies , Aiden vs Wingfield, H. — 1-0 — Auckland NZL
1914 — Davies , Aiden vs Severne E — 1/2-1/2 — Auckland NZL

7.c3 — 3.4% (544 parties)

1927 — Grob, Henry vs Censer, Marcel — 1-0 — London ENG
1946 — Vinken, Alex vs Pruyt, P H — 1/2-1/2 — Leiden NED
1950 — Averbakh, Yuri L vs Liublinsky, Victor — 1-0 — Moskou ch-URS
1950 — Geller, Efim P. vs Suetin, Alexey S — 0-1 — Moskou ch-URS
1952 — Vajda, Arpad vs Pogats, Jozsef Jr. — 1/2-1/2 — Hungary ch

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