C70f — Spanish: 4.Ba4 Be7

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Be7 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : paire de fous.
Faiblesses adverses : Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, 4 pièces non développées (B1, C1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● 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 b4, case forte d4, Be7 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, 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
● ...Bg4 — Clouer Nf3
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C70f —

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Be7

Eval: [+0.46]

Les coups candidats

5.O-O — 85.5% (888 parties)

Ambassadeurs : Weber-Widmer, Daniel A (13x), Hjorth, Jesper (11x), Clark, Richard I (8x), Misericordia, Antonio (8x), Diblio, Antonio (7x), Haraldsson, Haraldur (7x), Milde, Lars (7x), Benedictsson, Benony (5x)

5.c3 — 4.7% (49 parties)

Ambassadeurs : Partac, Elena (2x), Lord, John (1x), Hampton, Thomas Inglis (1x), Roe, Philip (1x), Hartston, William R (1x), Albareda, Miguel (1x), Paoli, Enrico (1x), Appel, D. (1x)

5.d3 — 2.7% (28 parties)

Ambassadeurs : Gerbec, Luka (1x), Heider, Dirk (1x), Vujosevic, Vladimir (1x), Fadel, Mario (1x), Schumacher, Aaron (1x), Polonius M (1x), Duris, Ivan (1x), Lahucky, Pavol (1x)

5.d4 — 2.6% (27 parties)

Ambassadeurs : Bucciardini, Giuliano (3x), Wuelfing, O. (1x), Kohtz, Johannes (1x), MacKenzie, George H (1x), Reichhelm, Gustavus C (1x), Aronson, Lev (1x), Borisenko, Georgy K (1x), Barden, Leonard (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5.O-O	5.c3	5.d3	5.d4
<1800	69	78%	10%	6%	1%
1800-2200	402	87%	5%	2%	2%
2200-2600	224	91%	2%	2%	2%
2600+	7	71%	—	14%	—

Évolution par décennie (% des parties)

Décennie	N parties	5.O-O	5.c3	5.d3	5.d4
1860s	5	40%	20%	—	40%
1870s	1	100%	—	—	—
1880s	1	100%	—	—	—
1900s	6	83%	—	—	—
1910s	2	100%	—	—	—
1920s	1	—	—	100%	—
1930s	3	100%	—	—	—
1940s	4	75%	—	—	—
1950s	7	86%	—	—	14%
1960s	29	93%	7%	—	—
1970s	19	84%	11%	—	5%
1980s	41	76%	5%	—	15%
1990s	117	79%	7%	4%	3%
2000s	211	84%	6%	2%	2%
2010s	403	88%	4%	2%	1%
2020s	188	90%	2%	5%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5.O-O	88%	90%	▲ +2.3%
5.c3	4%	2%	▼ -2.9%
5.d3	2%	5%	▲ +2.6%
5.d4	1%	1%	-0.4%

Parties historiques

5.O-O — 85.5% (888 parties)

1866 — Thorold, Edmund vs Owen, John — 0-1 — Redcar
1867 — MacKenzie, George H vs Reichhelm, Gustavus C — 1-0 — Philadelphia, PA USA
1871 — Stern Adolf vs Mieses, Samuel — 0-1 — Bad Ems
1885 — Roberts, John Drew vs Locock, Charles Dealtry — 1-0 — St Georges CC
1901 — Leussen, Benjamin vs Meiners, W B H — 1-0 — Haarlem NED

5.c3 — 4.7% (49 parties)

1868 — Lord, John vs Hampton, Thomas Inglis — 0-1 — ?
1960 — Albareda, Miguel vs Paoli, Enrico — 1/2-1/2 — Biel SUI
1965 — Roe, Philip vs Hartston, William R — 0-1 — Paignton
1970 — Kristjansson, Olafur vs Benedictsson, Benony — 0-1 — Reykjavik ISL
1970 — Mack, Andrew L vs Schecter, H — 0-1 — ?

5.d3 — 2.7% (28 parties)

1923 — Gerbec, Luka vs Heider, Dirk — 1-0 — Frankfurt GER
1991 — Vujosevic, Vladimir vs Fadel, Mario — 0-1 — ESCOM/B IM
1991 — Schumacher, Aaron vs Polonius M — 0-1 — GER
1992 — Novak, Stanislav vs Kujovic, Michal — 0-1 — Bratislava SVK
1995 — Abrego Cruz, Atletl Edsel vs Fiaccabrino, Giovanni — 1/2-1/2 — Switzerland

5.d4 — 2.6% (27 parties)

1862 — Wuelfing, O. vs Kohtz, Johannes — 1-0 — Duesseldorf GER
1867 — MacKenzie, George H vs Reichhelm, Gustavus C — 1/2-1/2 — Philadelphia, PA USA
1956 — Aronson, Lev vs Borisenko, Georgy K — 1/2-1/2 — Kharkov UKR
1975 — Barden, Leonard vs Waterton, William Edwin — 1/2-1/2 — ?
1982 — Hlavac, Rudolf vs Dotlacil, Ladislav — 0-1 — ?

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● b7→a6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Ba4	● Ba4 Ok (mob. 3)
Be7		● Be7 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (b1, c1, a1, h1)	4 (g8, c8, 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	● c2-c3, ● d2-d3	● …d7-d6, ● …d7-d5, ● …f7-f6, ● …f7-f5

Partie
1941 GER Ch Bad Oeynhausen GER – Round 15 – Pfeiffer, Gerhard – 1-0 – Brunoehler, Max – G40 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. O-O d6 6. d4 b5 7. Bb3 exd4 8. Bd5 Bb7 9. Nxd4 Qd7 10. c4 bxc4
1951 Moskou ch-URS – Round ? – Averbakh, Yuri L – 1-0 – Terpugov, Evgeny – G131 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. O-O b5 6. Bb3 d6 7. c3 Bf6 8. d4 Bg4 9. d5 Na5 10. Bc2 Ne7
1951 Moskou ch-URS – Round 1 – Lipnitsky, Isaac – 1-0 – Terpugov, Evgeny – G106 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. O-O b5 6. Bb3 d6 7. c3 Bf6 8. a4 Bd7 9. d4 Na5 10. Bc2 Ne7
1954 URS Team Ch – Round 10 – Konstantinopolsky, Alexander – 1/2-1/2 – Borisenko, Georgy K – G185 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. O-O b5 6. Bb3 d6 7. d4 Nf6 8. dxe5 Nxe5 9. Nxe5 dxe5 10. Qe2 Bb7
1960 Clare Benedict Cup 07th – Round 4 – Albareda, Miguel – 1/2-1/2 – Paoli, Enrico – G31 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. c3 Nf6 6. Qe2 b5 7. Bb3 d6 8. d3 O-O 9. Nbd2 Na5 10. Bc2 c5
1964 Hastings6465 – Round 1 – Lee, Peter N – 0-1 – Keres, Paul – G4 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. O-O d6 6. c3 Bf6 7. d4 Bg4 8. dxe5 dxe5 9. Qe2 Ne7 10. Rd1 Qc8
1964 Reggio Emilia ITA – Round 3 – ? – 1-0 – Siveri, Armando – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. O-O b5 6. Bb3 d6 7. c3 Nf6 8. d4 Bg4 9. h3 Bd7 10. Ng5 O-O
1965 Marianske Lazne – Round 6 – Jimenez Zerquera, Eleazar – 0-1 – Keres, Paul – G29 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. O-O d6 6. Bxc6+ bxc6 7. d4 exd4 8. Nxd4 c5 9. Ne2 Nf6 10. Nbc3 O-O
1968 Reykjavik – Round 1 – Sigurjonsson, Gudmundur – 1-0 – Benedictsson, Benony – G57 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. O-O d6 6. c3 b5 7. Bb3 Bf6 8. a4 Bg4 9. h3 bxa4 10. Bxa4 Bd7
1968 Reykjavik – Round 1 – Vasiukov, Evgeni – 1-0 – Benedictsson, Benony – G56 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. O-O b5 6. Bb3 Bf6 7. a4 Bb7 8. Nc3 Nd4 9. Nxd4 exd4 10. Nd5 Bxd5
Saint Louis Rapid 2023 – Round 5.4 – Vachier-Lagrave, Maxime – 1/2-1/2 – Nepomniachtchi, Ian – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. c4 Nf6 6. Nc3 Bc5 7. O-O O-O 8. Nxe5 b5 9. cxb5 Nd4 10. d3 axb5