A25v — English: Closed

1.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bc5 5.e3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e4, case forte b5, case forte d5, Bg2 actif, paire de fous.
Faiblesses adverses : Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, arriérés d2, f2, 4 pièces non développées (G1, C1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Nf3 — Développer Ng1
● d3 — Libérer Bc1

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte b4, Bc5 actif, paire de fous.
Faiblesses adverses : arriérés d2, f2, Bc1 enfermé, roi blanc au centre.
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
● ...d5 — Rupture
● ...e4 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A25v — Closed

1.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bc5 5.e3

Eval: [+0.34]

Les coups candidats

5…O-O — 49.0% (1904 parties)

Ambassadeurs : Vetter, Udo (19x), Hjorth, Jesper (15x), Molina, Vicente Andres (7x), Owens, Johnny (7x), Watson, Roland (6x), Helmer, Janos (6x), Movsesian, Sergei (6x), MacMillen, Andrew N (6x)

5…d6 — 29.3% (1137 parties)

Ambassadeurs : Rutter, Blair A (6x), Vetter, Udo (5x), Watson, Roland (4x), Najer, Evgeniy (3x), Morley, Paul (3x), Hryniw, Michael (3x), Ochs, Daniel Elias (3x), Noboa Silva, Kevin (3x)

5…d5 — 12.4% (481 parties)

Ambassadeurs : Korneev, Oleg (6x), Degtiarev, Evgeny (5x), Meszaros, Andras (4x), Miles, Anthony J (3x), Kopp, Peter, Dr. (3x), Tomescu, Victor-Alexandru (3x), Tishin, Petr (3x), Vojta, Tomas (3x)

5…a6 — 5.9% (231 parties)

Ambassadeurs : Koltanowski, George (2x), Colle, Edgar (2x), Ollek, Karl-Heinz (2x), Skurygin, Anton (2x), Granara Barreto, Sebastian (2x), Vilella Bertran, Joan (2x), Kulon, Klaudia (2x), Gibaud, Amedee (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5…O-O	5…d6	5…d5	5…a6
<1800	289	50%	35%	3%	7%
1800-2200	1540	50%	29%	13%	6%
2200-2600	994	46%	23%	22%	8%
2600+	30	27%	20%	37%	17%

Évolution par décennie (% des parties)

Décennie	N parties	5…O-O	5…d6	5…d5	5…a6
1920s	3	33%	—	—	67%
1930s	6	33%	50%	—	17%
1940s	7	14%	57%	—	—
1950s	17	59%	41%	—	—
1960s	18	33%	56%	—	—
1970s	22	45%	45%	9%	—
1980s	70	44%	30%	17%	3%
1990s	463	49%	34%	8%	4%
2000s	1137	49%	28%	14%	5%
2010s	1896	51%	28%	12%	7%
2020s	246	35%	33%	19%	8%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5…O-O	51%	35%	▼ -16.1%
5…d6	28%	33%	▲ +5.4%
5…d5	12%	19%	▲ +7.5%
5…a6	7%	8%	▲ +1.3%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 1 partie
Karpov, Anatoly — 1 partie
Carlsen, Magnus — 1 partie

Parties historiques

5…O-O — 49.0% (1904 parties)

1921 — Reshevsky, Samuel vs Irving Spero — 1-0 — City Club of Cleveland, Cleveland, OH USA
1938 — Smyslov, Vasily vs Shakhrai, Valentina — 0-1 — Gorky
1938 — Shamaev, Leonid vs Kopaev, Nikolay A — 1-0 — Leningrad RUS
1942 — Christoffel, Martin vs Grob, Henry — 0-1 — Vaduz
1950 — Bogoljubow, Efim vs Schindler, Josef — 1-0 — FRG-ch Bad Pyrmont GER

5…d6 — 29.3% (1137 parties)

1934 — Hastings, George Henry vs Crakanthorp, Spencer — 0-1 — Sydney AUS
1934 — Joss, Hermann vs Bernstein, Olivia — 0-1 — Zurich SUI
1936 — Marshall, Frank vs Reinfeld, Fred — 1-0 — Marshall CC ch
1940 — Rebane, Joonas vs Sarapu, O. — 1-0 — Parnu EST
1945 — Fine, Reuben vs Knapp, EM. — 1-0 — Richmond

5…d5 — 12.4% (481 parties)

1973 — Adams Astudillo, John vs Azogue Pereyra, Moises — 0-1 — corr GB-ARG
1977 — Behle, Burkhard, Dr. vs Kopp, Benjamin — 0-1 — corr BdF-PK
1981 — Leitner, Maximilian vs Kopp, Bernd, Dr. — 1/2-1/2 — GER
1981 — Skarke, Hermann vs Kopp, Peter, Dr. — 1-0 — FRG-ch17 corr7982
1981 — Fries-Nielsen, Jens Ove vs Kopp, Bernd, Dr. — 1/2-1/2 — Duitsland tt

5…a6 — 5.9% (231 parties)

1925 — Koltanowski, George vs Colle, Edgar — 1/2-1/2 — Gand
1925 — Koltanowski, George vs Colle, Edgar — 1/2-1/2 — Brussels BEL
1933 — Gibaud, Amedee vs Gromer, Aristide — 0-1 — Sarreguemines
1985 — Tatarczak, Jan vs Holmela, Kari — 1-0 — Benidorm
1989 — Acacio Serrano, Anabella Victoria vs Profeta Castro, Clevyton — 1-0 — corr Italy

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	● d2, ● f2	—
Chaînes	● d2→e3, f2→e3, f2→g3, h2→g3	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● b5 (2v0), ● d5 (3v1)	● b4 (2v0)
Cases faibles	—	—
Centre	● d5 (3v1), ● e4 (2v1)	● d4 (3v1), ● e5 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Actif (mob. 6)
Bc5		● Bc5 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (g1, c1, a1, h1)	3 (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	semi-ouvert
Ruptures	● d2-d3, ● e3-e4, ● f2-f3	● …d7-d6, ● …d7-d5, ● …e5-e4

Partie
1934 Zuerich – Round 1 – Joss, Hermann – 0-1 – Bernstein, Olivia – G5 1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 Bc5 5. e3 d6 6. a3 O-O 7. b4 Bb6 8. Na4 e4 9. f4 a5 10. Nxb6 cxb6
1938 Leningrad – Round 1 – Shamaev, Leonid – 1-0 – Kopaev, Nikolay A – G1 1. c4 Nf6 2. Nc3 Nc6 3. g3 e5 4. Bg2 Bc5 5. e3 O-O 6. Nge2 Re8 7. d3 d6 8. O-O Bg4 9. h3 Bd7 10. a3 a5
1947 Nt Lueneburg GER – Round 5 – Heinicke, Herbert – 1-0 – Braun Harms, Daniel – G13 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bc5 5. e3 Qe7 6. d3 d6 7. Nge2 Be6 8. Nd5 Bxd5 9. cxd5 Nb4 10. Nc3 c6
1950 FRG Ch Bad Pyrmont GER – Round 10 – Bogoljubow, Efim – 1-0 – Schindler, Josef – G27 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bc5 5. e3 O-O 6. Nge2 d6 7. d4 exd4 8. exd4 Bb4 9. O-O Bxc3 10. Nxc3 Re8
1953 GER Ch 15th – Round 6 – Herrmann, Ludwig – 1-0 – Ahues, Carl – G13 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 Bc5 5. e3 O-O 6. Nge2 Re8 7. d3 Bf8 8. O-O d6 9. h3 Ne7 10. f4 c6
1953 HUN Ch Budapest HUN – Round 1 – Barcza, Gedeon – 1-0 – Rethy, Pal – G5 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bc5 5. e3 O-O 6. Nge2 Re8 7. O-O Bf8 8. d4 d6 9. d5 Ne7 10. e4 a5
1955 Buenos Aires CA – Round 4 – Bianco Esposito, Antonio – 1/2-1/2 – Bisguier, Arthur B – G29 1. c4 Nc6 2. Nc3 e5 3. g3 Nf6 4. Bg2 Bc5 5. e3 O-O 6. Nge2 Re8 7. d3 d6 8. h3 Bf5 9. O-O Qd7 10. Kh2 e4
1955 Poland ch13 – Round 9 – Gawlikowski, Stanislaw – 0-1 – Luczynowicz, Waclaw – G27 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 Bc5 5. e3 d6 6. Nge2 O-O 7. O-O Bf5 8. d4 Bb6 9. b4 Nxb4 10. Bxb7 Rb8
1956 CSR Ch – Round 14 – Alster, Ladislav – 1-0 – Florian, Jaromir – G124 1. c4 e5 2. Nc3 Nc6 3. g3 Bc5 4. Bg2 Nf6 5. e3 d6 6. Nge2 Bg4 7. h3 Bf5 8. d4 Bb6 9. b4 a5 10. b5 Nb4
1957 Minsk zt – Round 8 – Roizman, Abram Y – 0-1 – Skuja Roberts – G52 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bc5 5. e3 O-O 6. Nge2 Re8 7. O-O a6 8. d4 Ba7 9. d5 Ne7 10. h3 d6
1959 HUN Ch Budapest HUN – Round 7 – Portisch, Lajos – 1/2-1/2 – Florian, Tibor – G26 1. c4 Nf6 2. g3 e5 3. Nc3 Nc6 4. Bg2 Bc5 5. e3 O-O 6. Nge2 Re8 7. d3 a6 8. O-O d6 9. a3 Ba7 10. b4 Bg4
1963 CSR Ch – Round 14 – Filip, Miroslav – 1-0 – Augustin, Josef – G123 1. c4 e5 2. Nc3 Nc6 3. g3 Bc5 4. Bg2 Nf6 5. e3 d6 6. Nge2 Qe7 7. d3 h5 8. h3 Bb6 9. a3 Be6 10. Nd5 Bxd5
1964 BRA zn – Round 3 – Lazzarini Decio – 0-1 – De Freitas, Marcio Elisio – G3 1. c4 Nc6 2. Nc3 Nf6 3. g3 e5 4. Bg2 Bc5 5. e3 O-O 6. a3 d6 7. b4 Bb6 8. h3 Bf5 9. d3 h6 10. Bb2 Re8
1966 La Habana olm fin-C – Round 10 – Cevallos, Alejandro – 0-1 – Ujtumen, Tudev – G24 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bc5 5. e3 h5 6. h3 d6 7. Nge2 Bf5 8. d4 Bb6 9. a3 Qe7 10. O-O Qd7
1966 URS Team Ch – Round 1 – Korchnoi, Viktor – 1-0 – Reshko, Aron – G72 1. g3 Nf6 2. Bg2 e5 3. c4 Nc6 4. Nc3 Bc5 5. e3 d6 6. Nge2 O-O 7. d4 Bb6 8. O-O a5 9. h3 Re8 10. d5 Ne7
1968 Buesum – Round 5 – Huebner, Robert – 1-0 – Saemisch, Friedrich – G7 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bc5 5. e3 O-O 6. Nge2 Re8 7. d3 a6 8. O-O d6 9. a3 Ba7 10. b4 Ne7
42. Olympiad 2016 – Round 1.22 – Machin Rivera, Mark – 0-1 – Zhigalko, Sergei – G33 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bc5 5. e3 O-O 6. Nge2 a6 7. O-O d6 8. b3 Ba7 9. d4 Re8 10. h3 h6
6. World Blitz 2010 – Round 24.10 – Gelfand, Boris – 1-0 – Movsesian, Sergei – G168 1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 Nf6 5. e3 O-O 6. Nge2 a6 7. O-O d6 8. d3 Ba7 9. b3 Be6 10. Nd5 Ne8
FIDE World Cup 2015 – Round 2.8 – Laznicka, Viktor – 1/2-1/2 – Adams, Michael – G311 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bc5 5. e3 O-O 6. a3 a6 7. Nge2 d6 8. h3 Ba7 9. O-O Re8 10. d4 h6
World Blitz 2015 – Round 15.59 – Mikhalevski, Victor – 0-1 – Grigoriants, Sergey – G961 1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 Bc5 5. e3 d6 6. Nge2 a6 7. b3 O-O 8. Bb2 Ba7 9. O-O Bf5 10. f4 e4
World Blitz 2015 – Round 18.59 – Bezold, Michael – 0-1 – Grigoriants, Sergey – G1144 1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 Bc5 5. e3 d6 6. Nge2 a6 7. h3 Ba7 8. b3 O-O 9. O-O h6 10. Kh2 Bf5
World Blitz 2015 – Round 19.17 – Matlakov, Maxim – 0-1 – Vitiugov, Nikita – G1168 1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 Nf6 5. e3 a6 6. Nge2 d6 7. d4 exd4 8. exd4 Ba7 9. O-O h6 10. h3 O-O
World Blitz 2015 – Round 5.9 – Ivanchuk, Vasyl – 1-0 – Movsesian, Sergei – G341 1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 Nf6 5. e3 O-O 6. Nge2 a6 7. d3 d6 8. b3 Ba7 9. Bb2 Bg4 10. h3 Be6
World Rapid 2019 – Round 5.43 – Matlakov, Maxim – 0-1 – Narayanan, Sri Shiva Kumar – G327 1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 Nf6 5. e3 O-O 6. a3 a5 7. Nge2 d6 8. d4 Ba7 9. O-O Ne7 10. b4 c6
World Rapid Final 2012 – Round 15 – Ivanchuk, Vasyl – 1-0 – Svidler, Peter – G112 1. c4 e5 2. g3 Nc6 3. Bg2 Nf6 4. Nc3 Bc5 5. e3 d5 6. cxd5 Nb4 7. Nf3 Nd3+ 8. Ke2 Bf5 9. Qa4+ c6 10. Nh4 Nxc1+

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