C78f — Spanish: 5.O-O b5 6.Bb3 d6

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 d6 * ○ 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. Les fous enfermés en c8 et f8 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 d4….

Atouts. Les Noirs s'appuient sur les cases fortes d4 et g4 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 (les fous c8 et f8 et les tours a8 et h8).

Plans. ...Bg4 (Développer Bc8, clouer Nf3) ; ...Be7 (Développer Bf8) ; ...Na5 (Attaquer Bb3) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● a6→b5, d6→e5, c7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (2v1)	● d4 (2v1), ● g4 (2v0)
Cases faibles	—	—
Centre	● d5 (2v1)	● d4 (2v1), ● e4 (1v0), ● e5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bb3	● Bb3 Actif (mob. 5)
Bc8		● Bc8 Non développé (mob. 6)
Bf8		● Bf8 Non développé (mob. 1)
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	● …d6-d5

Partie
1912 Bad Pistyan – Round 7 – Yates, Frederic D – 0-1 – Leonhardt, Paul – G22 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. a4 b4 9. a5 O-O 10. d4 Bg4
1913 BCF Ch 10th – Round 5 – Yates, Fred Dewhirst – 1-0 – Michell, Reginald – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. Re1 Be7 10. d4 Qc7
1928 Barcelona sim – Round ? – Alekhine, Alexander – 1-0 – Argente Casanoves, Joaquin – G23 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. a4 Bg4 8. c3 Be7 9. h3 Bxf3 10. Qxf3 Na5
1931 New York – Round 1 – Capablanca, Jose – 1-0 – Sun Club – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5 Na5 9. Re1 Nxb3 10. axb3 Qxd5
1940 New York ch-USA – Round 13 – Pinkus, Albert – 1/2-1/2 – Polland, D. – G75 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. d4 Bg4 9. d5 Na5 10. Bc2 O-O
1940 New York ch-USA – Round 17 – Seidman, Herbert – 1/2-1/2 – Polland, D. – G102 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Qe2 Na5 8. c3 Nxb3 9. axb3 Bb7 10. d4 Nxe4
1942 Salzburg – Round 1 – Stoltz, Gabriel – 1/2-1/2 – Alekhine, Alexander – G4 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Bg4 8. Qe2 Be7 9. Rd1 Na5 10. Bc2 c5
1943 Madrid – Round 13 – Keres, Paul – 1-0 – Abalde Perez, Fernando Jose – G47 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Bg4 8. h3 Bh5 9. d3 Na5 10. Bc2 c5
1943 Madrid – Round 4 – Fuentes Garcia, Juan Manuel – 1-0 – Perez Perez, Francisco Jose – G15 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. h3 Na5 9. Bc2 c5 10. d3 h6
1944 Mar del Plata – Round 12 – Pilnik, Herman – 1-0 – Rossetto, Hector – G96 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5 Nxd5 9. Nxf7 Kxf7 10. Qf3+ Ke6
1945 Novi Sad – Round 7 – Tsvetkov, Alexandar K – 1-0 – Radojcic, Slobodan – G91 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Bg4 8. d3 Be7 9. Nbd2 O-O 10. h3 Bh5
1945 Ventnor City – Round 1 – Byrne, Ray – 1/2-1/2 – Regen – G3 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Nf6 6. O-O d6 7. Ng5 d5 8. exd5 Nd4 9. Qe1 Nxb3 10. axb3 Be7
1945 Ventnor City – Round 8 – Byrne, Robert E – 1/2-1/2 – Regen A – G21 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Nf6 6. O-O d6 7. Ng5 d5 8. exd5 Nd4 9. Qe1 Nxb3 10. axb3 Be7
1946 Barcelona – Round 1 – O'Kelly, Albéric de Galway – 1-0 – Medina-Garcia, Antonio – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. a4 b4 9. a5 O-O 10. d4 Bg4
1946 New York ch-USA – Round 1 – Fink, Alea – 0-1 – Reshevsky, Samuel – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. d4 O-O 9. h3 exd4 10. Nxd4 Na5
1946 New York ch-USA – Round 1 – Pinkus, Albert – 0-1 – Reshevsky, Samuel – G33 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. d4 O-O 9. h3 exd4 10. Nxd4 Na5
1946 Nottingham ch-BCF – Round 6 – Wood, Beau – 0-1 – Alexander Ronald Cheng – G44 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5 Nd4 9. d6 Nxb3 10. dxc7 Qxc7
1946 Pittsburgh – Round 2 – Shipman, Walter – 0-1 – Yerhoff, Frank J – G15 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Bg4 8. h3 Bh5 9. d3 Be7 10. Nbd2 O-O
1946 Pittsburgh – Round 8 – Seidman, Herbert – 1-0 – Yerhoff, Frank J – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. a4 Bg4 8. c3 Be7 9. h3 Bd7 10. Qe2 O-O
1946 Zaanstreek – Round 9 – Euwe, Max – 1-0 – Muehring, W – G43 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5 Nd4 9. Nc3 Nxb3 10. axb3 b4
1948 Hastings Premier 1947/48 23rd – Round 4 – Alexander, Conol Hugh – 1/2-1/2 – Muhring, Willem Jan – G1 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Bg4 8. h3 Bh5 9. d3 Be7 10. Qe2 O-O
1948 Mar del Plata – Round 5 – Medina-Garcia, Antonio – 1/2-1/2 – Pilnik, Herman – G46 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. d4 O-O 9. h3 Bb7 10. Nbd2 Na5
1948 Nijmegen – Round 6 – Kramer, Haije – 1-0 – Van Scheltinga, Theo – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Nbd2 g6
1948 Oldenburg – Round 14 – Sarapu, Ortvin – 0-1 – Toerber, Claus – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. h3 Na5 9. Bc2 c5 10. d4 cxd4
1948 YUG Ch – Round 10 – Janosevic, Dragoljub – 1-0 – Andric, Dragoslav – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. d4 Bg4 9. d5 Na5 10. Bc2 O-O
1949 Moskou ch-URS – Round 1 – Geller, Efim P – 0-1 – Keres, Paul – G126 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. d4 Bg4 9. h3 Bh5 10. d5 Na5
1949 Moskou ch-URS – Round 1 – Kholmov, Ratmir D – 1/2-1/2 – Keres, Paul Petrovich – G127 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. h3 O-O 9. d4 Bb7 10. Qe2 Nd7
1949 Trencianske Teplice – Round 4 – Prins, Laura – 1-0 – De Paoli, Emilio – G22 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. a4 Bg4 8. c3 Na5 9. Bc2 c5 10. h3 Bxf3
1949 URS Ch, semi final – Round 5 – Geller, Efim P – 1-0 – Pogrebissky, Iosif – G53 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Bg4 8. h3 Bh5 9. a4 Na5 10. Bc2 Be7
1950 Moskou ch-URS – Round 1 – Suetin, Alexey S – 1-0 – Lipnitsky, Isaac – G91 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. a4 Bg4 9. h3 Bh5 10. d3 O-O
1950 URS Ch sf – Round 6 – Saigin, Vladimir – 0-1 – Tarasov, Vitaly – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Bg4 8. d3 Be7 9. Nbd2 O-O 10. Re1 d5
1951 It – Round 10 – Ader Hausman, Walter – 0-1 – Estrada Degrandi, Walter – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5 Nd4 9. d6 Nxb3 10. dxc7 Qxc7
1951 Sopot – Round 12 – Gereben, Erno – 1-0 – Sebestyen, Bela – G71 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. a4 Bb7 10. Qe2 b4
1951 Stevenson Memorial 3rd – Round 7 – O'Kelly de Galway, Alberic – 1-0 – Thomas Andrew – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. a4 Bd7
1951 URS Ch sf – Round 9 – Novotelnov, Nikolai – 1/2-1/2 – Lipnitsky, Isaac – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. a4 Bb7 9. Qe2 O-O 10. d4 b4
1951 YUG Ch 6th – Round 4 – Milic, Borislav – 1-0 – Andric, Dragoslav – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. a4 b4 8. a5 Be7 9. d3 O-O 10. h3 Be6
1954 Kiev ch-URS – Round 1 – Suetin, Alexey S – 1/2-1/2 – Ragozin, Viacheslav – G127 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Nbd2 g6
1954 Prague zt – Round 10 – Olafsson, Fridrik – 1-0 – Filip, Marius Liviu – G54 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Nbd2 g6
1954 RSFSR Ch – Round ? – Polugaevsky, Lev – 1/2-1/2 – Shamkovich, Leonid – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. Qe2 g6 10. d4 Qc7
1954 URS Ch, semi final – Round 1 – Vasiukov, Evgeni – 1/2-1/2 – Kasparian, Genrikh – G61 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Nbd2 g6
1955 Erfurt – Round 1 – Dely, Peter – 1-0 – Dworzynski, Roman – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Nbd2 g6
1955 Gothenburg Interzonal – Round 18 – Acuna Medina, Angel G. – 1/2-1/2 – Bisguier, Arthur B – G172 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Bg4 8. d4 Be7 9. Be3 O-O 10. h3 Bh5
1955 Gothenburg Interzonal – Round 6 – Unzicker, Wolfgang – 1/2-1/2 – Bisguier, Arthur B – G57 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Re1 Bg4 8. c3 Na5 9. Bc2 c5 10. d3 g6
1955 Hungary Ch – Round 1 – Florian, Tibor – 1-0 – Foldi, Jozsef – G55 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. a4 b4
1955 Ljubljana – Round 16 – Karaklajic, Nikola – 1-0 – Puc, Stojan – G137 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. a4 b4
1955 Prague tm – Round 5 – Aczel Szabo, Janos – 1-0 – Filip Comes, Alvaro – G34 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. h3 Na5 9. Bc2 c5 10. d4 Qc7
1955 URS Team Ch sf – Round ? – Vasiukov, Evgeni – 1/2-1/2 – Arulaid, Alexander – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Nbd2 g6
1955 URS-USA telex – Round 2 – Bronstein, David I – 1-0 – Evans, Larry – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Nbd2 g6
1955 USSR – Round 9 – Tal, Mikhail – 1-0 – Neishtadt, Yakov – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. a4 b4 9. a5 O-O 10. d4 exd4
1958 GBR Ch 45th – Round 4.11 – Holmes, Richard Frank – 1-0 – Thomas Andrew – G22 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. Re1 Nc6 10. d4 Bg4
1958 Stevenson Memorial 6th – Round 3 – Ivkov, Borislav – 1-0 – Guy, Thomas – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Nbd2 Be7
1959 USSR – Round 1 – Nezhmetdinov, Rashid – 1-0 – Zhuravlev, Aleksandr – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. d4 Bg4 9. h3 Bxf3 10. Qxf3 exd4
1959 Zalaegerszeg – Round 1 – Portisch, Ferenc – 1-0 – Rosta, Sandor – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5 Nd4 9. Re1 Bd6 10. c3 Nxb3
1960 GBR Ch 47th – Round 1.11 – Hindle, Owen Mark – 1/2-1/2 – Thomas Andrew – G3 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. h3 g6
1960 GBR Ch 47th – Round 5.5 – Haygarth, Michael John – 0-1 – Aitken, James – G43 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. a4 b4
1960 GBR Ch 47th – Round 8.10 – Fuller, Ronald A – 1/2-1/2 – Aitken, James – G65 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. h3 g6 10. d4 Qc7
1960 URS Ch sf – Round 7 – Gufeld, Eduard – 1-0 – Estrin, Yakov – G57 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. h3 Nc6
1961 BRA Ch – Round 1 – Lazzarini Decio – 0-1 – Camara, Helder – G2 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5 Nd4 9. Qe1 Nxb3 10. axb3 Be7
1961 GBR Ch 48th – Round 11.6 – Haygarth, Michael John – 1/2-1/2 – Aitken, James – G89 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. h3 g6
1961 GBR Ch 48th – Round 7.5 – Gibbs, Peter Campbell – 1-0 – Phillips, Alan – G57 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Be7 8. a4 Bg4 9. Qe2 O-O 10. h3 Bh5
1961 GBR Ch 48th – Round 8.10 – Lloyd, David Edward – 1-0 – Thomas Andrew – G62 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Qe2 Bg4 8. c3 g6 9. h3 Be6 10. Bxe6 fxe6
1961 Moscow Ch – Round 13 – Korzin, Vitaly A – 1-0 – Estrin, Yakov – G27 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. h3 Nc6
1961 Zurich – Round 1 – Kupper, Josef – 1/2-1/2 – Lombardy, William J – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5 Nd4 9. c3 Nxb3 10. Qxb3 Bd6
1962 Whitby ch-BCF – Round 1 – Cook, Patrick – 0-1 – Aitken, James – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Nbd2 g6
1962 Whitby ch-BCF – Round 1 – Littlewood, John E – 1-0 – Aitken, James – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. a4 b4
1963 Reggio Emilia 6364 06th – Round 5 – Teschner, Rudolf – 1-0 – Bonfioli, Marco – G17 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. a4 Rb8
1964 Tel Aviv ISR – Round 2 – Garces, Napoleon – 1-0 – Aitken, James – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Re1 Na5 8. d4 Nxb3 9. axb3 Bg4 10. dxe5 Bxf3
1965 SM - Falkoping – Round 12 – Fridh, Anton – 1/2-1/2 – Werle, Jan – G28 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. Re1 Bg4
1965 SWE Ch – Round 10 – Nilsson, Zandor – 1-0 – Werle, Allan – G32 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. h3 Bd7
1966 Mem - VanHooser 2nd – Round ? – Blackstone, John – 1-0 – Dwyer, J. – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5 Nd4 9. Re1 Bd6 10. f4 Nxb3
1966 Vrnjacka Banja – Round 1 – Nicevski, Risto – 0-1 – Gliksman, Darko – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. h3 g6
1966 WECU-ch21 – Round 4 – Poolake, Maximilian Ernst – 0-1 – Thomas Andrew – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. a4 b4 10. d3 g6
1966 WECU-ch21 – Round 6 – Mann, Richard – 0-1 – Aitken, James – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. Qe2 Qc7 10. d3 g6
1968 Bristol ch-BCF – Round 1 – Lee, Paak Hei – 1-0 – Aitken, James – G15 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. a4 b4
1968 Bristol ch-BCF – Round 6 – Pritchett, Craig W – 1-0 – Aabel Thomas Eapen – G67 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. c3 Na5 8. Bc2 c5 9. d4 Qc7 10. h3 g6

C78f —

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 d6

Eval: [+0.50]

Les coups candidats

7.c3 — 38.0% (774 parties)

Ambassadeurs : Aitken, James (12x), Struzka, Vlastimil (11x), Kolanek, Roman (10x), Kriksciunas, Bronislavas (9x), Estrin, Yakov (8x), Houston, David (7x), Bisguier, Arthur B (5x), Keres, Paul (4x)

7.Re1 — 30.8% (626 parties)

Ambassadeurs : Struzka, Vlastimil (11x), Kolanek, Roman (11x), Aitken, James (5x), Paulicka, Ivan (3x), Alekseev, Viktor Viktorovich (3x), Sherwood, Russell (3x), Da Silva Filho, Alcindo Luz Bastos (3x), Palladino, Mario (3x)

7.Ng5 — 17.5% (357 parties)

Ambassadeurs : Capablanca, Jose (3x), Kolanek, Roman (3x), Mostowik, Daniel (3x), MacKenzie, George H (2x), Stanley, Charles H (2x), Dzagurov (2x), Zinner, Emil (2x), Korchnoi, Viktor (2x)

7.d3 — 4.5% (91 parties)

Ambassadeurs : Wassilian, Diana (2x), Da Silva Filho, Alcindo Luz Bastos (2x), Dutra, Paulo Bechara (2x), Milk, Joshua Oktay (2x), Andersen , Malik Anton (1x), Lamperiere (1x), Puc, Stojan (1x), Radojcic, Miroslav (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.c3	7.Re1	7.Ng5	7.d3
<1800	159	28%	35%	19%	6%
1800-2200	729	37%	31%	20%	3%
2200-2600	257	49%	28%	14%	2%
2600+	3	—	33%	—	33%

Évolution par décennie (% des parties)

Décennie	N parties	7.c3	7.Re1	7.Ng5	7.d3
1860s	2	—	—	100%	—
1880s	2	—	—	50%	—
1890s	1	—	—	100%	—
1900s	6	17%	17%	50%	—
1910s	10	50%	20%	10%	10%
1920s	6	67%	—	17%	—
1930s	11	9%	—	73%	9%
1940s	64	64%	6%	19%	2%
1950s	104	67%	13%	14%	1%
1960s	84	57%	18%	17%	—
1970s	61	67%	10%	15%	—
1980s	68	41%	29%	19%	1%
1990s	252	31%	31%	20%	8%
2000s	504	29%	38%	20%	6%
2010s	737	35%	35%	15%	4%
2020s	123	41%	28%	9%	4%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.c3	35%	41%	▲ +6.5%
7.Re1	35%	28%	▼ -6.8%
7.Ng5	15%	9%	▼ -6.4%
7.d3	4%	4%	-0.1%

Joueurs célèbres

Champions du monde dans cette position

Alekhine, Alexander — 7 parties
Lasker, Emanuel — 2 parties
Tal, Mikhail — 2 parties
Euwe, Max — 1 partie
Carlsen, Magnus — 1 partie

Parties historiques

7.c3 — 38.0% (774 parties)

1903 — Esser, Jan vs Olland, Adolf George — 0-1 — Utrecht m
1912 — Yates, Frederic D vs Leonhardt, Paul — 0-1 — Bad Pistyan CZE
1913 — Yates, Fred Dewhirst vs Michell, Reginald — 1-0 — Cheltenham
1915 — Tarrasch, Siegbert vs Fajarowicz, Emanuel — 0-1 — Leipzig GER
1918 — Conde, Adrian G vs Yates, Frederic D — 1/2-1/2 — Leeds-Bradford

7.Re1 — 30.8% (626 parties)

1901 — Englund, Fritz vs Fridlizius, Joel — 0-1 — Goteborg SWE
1910 — Lasker, Emanuel vs Janowski, Dawid — 1-0 — Berlin GER
1911 — Dagnino, Eduardo vs Chierichetti, Sergio — 1-0 — Rome ITA
1941 — Alekhine, Alexander vs Alvarado Gomez, Eduardo — 0-1 — Seville ESP
1945 — Rauch, Joseph Lyon vs Yerhoff, Frank — 0-1 — Saskatoon

7.Ng5 — 17.5% (357 parties)

1866 — MacKenzie, George H vs Stanley, Charles H — 1-0 — New York (New York CC)
1866 — MacKenzie, George H vs Stanley, Charles H — 1-0 — New York, NY USA
1885 — Bier, Max vs Noa, Joseph — 1-0 — Hamburg GER
1890 — Mills, Daniel vs Marriott, Rhodes — 0-1 — Manchester ENG
1903 — Munn, Stewart vs Kurrle, William — 1/2-1/2 — Montreal CAN

7.d3 — 4.5% (91 parties)

1915 — Mara T vs Dodds, G. — 1-0 — Christchurch NZL
1937 — Andersen , Malik Anton vs Lamperiere — 1-0 — Bern SUI
1947 — Puc, Stojan vs Radojcic, Miroslav — 1-0 — Ljubljana SLO
1956 — Matzerath, J. vs Meza Schmidt, Javier Esteban — 1/2-1/2 — cr.
1986 — Jackson, John Marvin vs Carroll Mitchell — 1-0 — Kalamazoo WMU op

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