C87a — Spanish: Closed, 6.Re1

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 * ● Trait aux Noirs

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 : 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 b4, case forte d4, Be7 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé.
Problèmes : roi au centre, Bc8 enfermé, 3 pièces non développées (C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Bg4 — Clouer Nf3
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C87a — Closed

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1

Eval: [+0.36]

Les coups candidats

6…b5 — 97.7% (126269 parties) →

Ambassadeurs : ? (399x), Zielinski, Sergej (332x), Langer, Raimund (300x), Simmelink, Joop Theo (293x), Geller, Efim P. (272x), Sherwood, Russell (267x), Romanishin, Oleg M (263x), Adams, Michael (261x)

6…d6 — 1.7% (2181 parties) →

Ambassadeurs : Romanishin, Oleg M (54x), Petrosian, Arshak B (26x), Malewicz, Frank (17x), Sokolov, Ivan (16x), Adams, Michael (15x), Lasker, Emanuel (14x), Yates, Frederic D (14x), Janowski, Dawid (13x)

6…O-O — 0.6% (771 parties)

Ambassadeurs : Basson, Heinrich (8x), Bladyko, Pawel (6x), Wozniak, Zbigniew (6x), Nittschalk, Karl (5x), Krunski, Jan Maria (5x), Räisänen, Timo (5x), Hakuc, Waclaw (4x), Van Esbroeck, Jeff (4x)

6…b6 — 0.0% (14 parties)

Ambassadeurs : Kauranen, Risto (1x), Heilimo, Eino (1x), Littlewood, Norman (1x), O'Kelly de Galway, Alberic (1x), Chandler, Murray G (1x), Nunn, John D M (1x), Sagorovsky (1x), Preinfalk, Anton (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…b5	6…d6	6…O-O	6…b6
<1800	2873	95%	3%	3%	0%
1800-2200	35431	98%	1%	1%	0%
2200-2600	58872	99%	1%	0%	0%
2600+	4589	98%	2%	0%	0%

Évolution par décennie (% des parties)

Décennie	N parties	6…b5	6…d6	6…O-O	6…b6
0s	1	100%	—	—	—
1790s	1	100%	—	—	—
1860s	2	50%	50%	—	—
1890s	1	100%	—	—	—
1900s	260	65%	35%	0%	—
1910s	240	84%	15%	0%	—
1920s	328	87%	12%	0%	—
1930s	298	91%	9%	0%	—
1940s	670	96%	4%	—	—
1950s	1760	98%	2%	0%	—
1960s	4169	96%	3%	0%	0%
1970s	4349	97%	3%	0%	0%
1980s	7293	98%	1%	0%	0%
1990s	15021	98%	2%	1%	0%
2000s	32364	97%	2%	1%	0%
2010s	49468	98%	1%	1%	0%
2020s	13039	99%	1%	0%	0%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…b5	98%	99%	▲ +0.7%
6…d6	1%	1%	-0.5%
6…O-O	1%	0%	-0.2%
6…b6	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Lasker, Emanuel — 10 parties
Euwe, Max — 10 parties
Alekhine, Alexander — 10 parties
Smyslov, Vladimir — 10 parties
Botvinnik, Mikhail — 10 parties
Tal, Mikhail — 10 parties
Karpov, Aleksandr — 10 parties
Karpov, Anatoly — 10 parties
Anand, Viswanathan — 10 parties
Kasparov, Garry — 10 parties
Hou, Yifan — 10 parties
Carlsen, Magnus — 10 parties
Kramnik, Vladimir — 10 parties
Ding, Liren — 10 parties
Gukesh D — 4 parties
Fischer, Robert James — 2 parties

Parties historiques

6…b5 — 97.7% (126269 parties)

3 — Efimov, Albert Nikolaevich vs Garau, Bernard — 0-1 — IECC
1792 — Morris, Bruce vs Barroso Law, Wildried — 1-0 — ?
1868 — De Vere, Cecil V vs Wisker, John — 1-0 — London ENG
1893 — Walbrodt, Carl vs ? — 0-1 — Havana CUB
1900 — Rosen, Leon vs Chigorin, Mikhail — 0-1 — Paris FRA

6…d6 — 1.7% (2181 parties)

1864 — Knorre, Viktor vs Paulsen, Louis — 1-0 — Berlin GER
1901 — Olland, Adolf George vs Mannheimer, Nathan — 1-0 — Haarlem NED
1901 — Te Kolste, Jan Willem vs Meiners, W B H — 0-1 — Haarlem NED
1901 — Olland, Adolf George vs Bleykmans, Dirk — 1-0 — Haarlem NED
1902 — Janowsky, D. vs Schlechter, C. — 1-0 — Carlsbad CZE

6…O-O — 0.6% (771 parties)

1903 — Vijzelaar, J vs Leonhardt, Paul — 0-1 — Hilversum NED
1914 — Capablanca, Jose vs Abata Molina, Santiago Andres — 0-1 — Buenos Aires ARG
1926 — Maroczy, Geza vs Showalter, Jackson — 1-0 — Chicago, IL USA
1931 — Yates, Bertram A. vs Taylor, Jack — 1/2-1/2 — ?
1953 — Estrada Degrandi, Walter vs Etcheverry, Eduardo — 1-0 — Montevideo Montevideo URU

6…b6 — 0.0% (14 parties)

1965 — Kauranen, Risto vs Heilimo, Eino — 1-0 — ?
1965 — Littlewood, Norman vs O'Kelly de Galway, Alberic — 0-1 — Bognor Regis
1978 — Sagorovsky vs Preinfalk, Anton — 1/2-1/2 — corr Vidmar mem
1988 — Chandler, Murray G vs Nunn, John D M — 1/2-1/2 — Linares
1993 — Kasperski, Achim vs Bortkun, Adam — 1/2-1/2 — cr.

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● b4 (2v0), ● d4 (2v1)
Cases faibles	—	—
Centre	—	● 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. 5)
Bc8		● Bc8 Non développé (mob. 0)
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
1926 Chicago – Round 11 – Maroczy, Geza – 1-0 – Showalter, Jackson – G23 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 dxc6 8. Nxe5 Bd6 9. Nf3 Re8 10. e5 Bg4
1957 EU corr – Round ? – Tiemann, Christoph – 1-0 – Montag, Andreas – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 dxc6 8. Nxe5 Re8 9. d4 Bd6 10. Bf4 c5
1963 Stevenson Memorial 11th – Round 7 – Collins, Richard Arnold – 1-0 – Barham, JD. – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 dxc6 8. Nxe5 Bd6 9. Nf3 Bg4 10. e5 Re8
1964 Tel Aviv ISR – Round 8 – Aitken, James – 1/2-1/2 – Silva Nazzari, Raul R – G29 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 dxc6 8. Nxe5 Re8 9. Nf3 Bg4 10. e5 Nd5
1966 Havana CUB – Round 5 – Garcia Martinez, Silvino – 1-0 – Barroso Caro, Alberto – G40 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 bxc6 8. Nxe5 c5 9. d3 Bb7 10. c4 d6

1926 Chicago – Round 11 – Maroczy, Geza – 1-0 – Showalter, Jackson – G23

1957 EU corr – Round ? – Tiemann, Christoph – 1-0 – Montag, Andreas – G9

1963 Stevenson Memorial 11th – Round 7 – Collins, Richard Arnold – 1-0 – Barham, JD. – G13

1964 Tel Aviv ISR – Round 8 – Aitken, James – 1/2-1/2 – Silva Nazzari, Raul R – G29

1966 Havana CUB – Round 5 – Garcia Martinez, Silvino – 1-0 – Barroso Caro, Alberto – G40