A25x — English: Closed

1.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bb4 5.Nd5 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte d5, Bg2 actif, paire de fous.
Faiblesses adverses : Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, 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 d4, Bb4 actif, paire de fous.
Faiblesses adverses : 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
● ...e4 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A25x — Closed

1.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bb4 5.Nd5

Eval: [+0.38]

Les coups candidats

5…Bc5 — 47.1% (1132 parties)

Ambassadeurs : Hanken, Jerome B (5x), Suba, Mihai (5x), Polak, Tomas (4x), Thirion, Marcel (4x), Newman, Nelson (4x), Schuermans, Robert (4x), Van Gool, Jeroen J W (4x), Vokhidov, Shamsiddin (4x)

5…O-O — 24.9% (599 parties)

Ambassadeurs : Popov, Vladimir Valentinovich (12x), Owens, Johnny (10x), Misericordia, Antonio (6x), Mostowik, Daniel (6x), Tsenkov, Ljubomir (5x), Jordan Arenas, Manuel (4x), Bartsch, Reinhard Andrea (4x), Holzhaeuer, Mathias (3x)

5…Nxd5 — 14.2% (341 parties)

Ambassadeurs : Vaulin, Alexander P. (3x), Simon, Peter (3x), Kaprinay (2x), Seret, Jean-Luc (2x), Zavoronkov, Vladimir (2x), Sikorsky, Horst (2x), O'Cinneide, Mel (2x), O`Connor, Eddie (2x)

5…a5 — 7.0% (167 parties)

Ambassadeurs : Fyllingen, Roy Harald (6x), Lipecki, Alexander (3x), Hentunen, Asko (3x), Osmanodja, Filiz (3x), Heindrich, Mark (2x), Vulevic, Vjekoslav (2x), Gausel, Einar J (2x), Herder, David A. (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5…Bc5	5…O-O	5…Nxd5	5…a5
<1800	74	42%	22%	16%	4%
1800-2200	977	46%	26%	14%	7%
2200-2600	1007	50%	24%	13%	9%
2600+	29	69%	21%	3%	7%

Évolution par décennie (% des parties)

Décennie	N parties	5…Bc5	5…O-O	5…Nxd5	5…a5
1920s	2	—	—	100%	—
1930s	5	40%	20%	40%	—
1940s	1	—	—	100%	—
1950s	1	—	—	100%	—
1960s	4	25%	25%	25%	25%
1970s	30	43%	30%	20%	7%
1980s	67	52%	15%	18%	10%
1990s	295	55%	13%	18%	8%
2000s	618	53%	15%	16%	7%
2010s	1167	44%	32%	12%	6%
2020s	212	36%	36%	10%	8%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5…Bc5	44%	36%	▼ -8.4%
5…O-O	32%	36%	▲ +4.6%
5…Nxd5	12%	10%	▼ -2.1%
5…a5	6%	8%	▲ +1.8%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 2 parties

Parties historiques

5…Bc5 — 47.1% (1132 parties)

1930 — Kashdan, Isaac vs Mieses, Jacques — 1-0 — Frankfurt GER
1933 — Mueller, Hans vs Glass, Eduard — 1-0 — Vienna AUT
1965 — Plater, Kazimierz vs De Graaff, Rag — 0-1 — Amsterdam II
1973 — Naranja, Renato vs Wotulo, Max — 1-0 — Manila PHI
1974 — Crookes, Wayne vs Chow Robert — 1-0 — Vancouver BC CAN

5…O-O — 24.9% (599 parties)

1939 — Hanauer, Milton Loeb vs Mccormick Sanchez, Elliot Gael — 1/2-1/2 — Ventnor City
1963 — Flesch, János vs Gereben, Erno — 1-0 — Reggio Emilia ITA
1971 — Benko, Pal vs Bisguier, Arthur B — 1/2-1/2 — Malaga ESP
1972 — Polgar, Istvan vs Gallmeyer, Peter — 1-0 — Bagneux FRA
1973 — Speelman, Jon S vs Pye, Raymond — 1/2-1/2 — Schilde

5…Nxd5 — 14.2% (341 parties)

1926 — Kaprinay vs Hubner, Harald — 1-0 — Berlin GER
1926 — Kaprinay vs Huebner, Alan-Ari — 1-0 — FS 1930
1938 — Watson Charles Gilbert M vs Green, Max — 1-0 — Sydney AUS
1938 — Golombek, Harry vs Klein, Ernst — 1/2-1/2 — Hastings ENG
1942 — Santasiere, Anthony vs Reinfeld, Wolfgang — 1-0 — New York, NY USA

5…a5 — 7.0% (167 parties)

1967 — Kavalek, Lubomir vs Pietzsch, Wolfgang — 1-0 — Sarajevo BIH
1972 — Norby, Peter H. vs Pedersen, Eigil — 1-0 — Esbjerg DEN
1979 — Negulescu, Adrian vs Rivas Pastor, Manuel — 1/2-1/2 — Groningen ch-EU jr
1982 — Mueller, Gert vs Ostermeyer, Peter, Dr. — 1/2-1/2 — FRG-ch Bad Neuenahr
1984 — Plachetka, Jan vs Pribyl, Josef — 1/2-1/2 — Czechoslovakia

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

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Actif (mob. 4)
Bb4		● Bb4 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	● pawn d2	—
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	● c4-c5, ● d2-d3, ● e2-e3, ● f2-f3	● …d7-d6, ● …e5-e4

Partie
1930 Frankfurt – Round 6 – Kashdan, Isaac – 1-0 – Mieses, Jacques – G28 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 Bb4 5. Nd5 Bc5 6. d3 Nxd5 7. Bxd5 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 Qe7 10. e3 Qb4
1933 Trebitsch Memorial 16th – Round 13 – Mueller, Hans – 1-0 – Glass, Eduard – G57 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 Bb4 5. Nd5 Bc5 6. d3 Nxd5 7. cxd5 Ne7 8. Nf3 d6 9. d4 exd4 10. Nxd4 O-O
1938 Hastings3839 – Round 1 – Golombek, Harry – 1/2-1/2 – Klein, Ernst – G1 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 Bb4 5. Nd5 Nxd5 6. cxd5 Nb8 7. Nf3 Qe7 8. O-O O-O 9. d4 exd4 10. Nxd4 Bc5
1942 New York – Round 1 – Santasiere, Anthony – 1-0 – Reinfeld, Wolfgang – G1 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bb4 5. Nd5 Nxd5 6. cxd5 Ne7 7. Nf3 Bd6 8. d4 e4 9. Ne5 Bb4+ 10. Kf1 O-O
1957 Danmarksmesterskabet – Round 7 – Andersen, Borge – 0-1 – Kupferstich, Moises – G24 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 Bb4 5. Nd5 Nxd5 6. cxd5 Ne7 7. Nf3 Ng6 8. O-O O-O 9. d4 d6 10. Qa4 c5
1963 Reggio Emilia 6364 06th – Round 1 – Flesch, János – 1-0 – Gereben, Erno – G2 1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 Bb4 5. Nd5 O-O 6. e3 Nxd5 7. cxd5 Ne7 8. Ne2 d6 9. O-O Ba5 10. d4 Bb6
1966 Sochi Chigorin Memorial 04th – Round 11 – Polugaevsky, Lev – 1-0 – Fuchs, Reinhart – G46 1. g3 e5 2. c4 Nc6 3. Bg2 Nf6 4. Nc3 Bb4 5. Nd5 Nxd5 6. cxd5 Ne7 7. Nf3 e4 8. Nd4 Nxd5 9. Qb3 c6 10. Bxe4 Qb6
1967 Sarajevo – Round 13 – Kavalek, Lubomir – 1-0 – Pietzsch, Wolfgang – G69 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bb4 5. Nd5 a5 6. e3 O-O 7. a3 Bc5 8. Ne2 d6 9. O-O Re8 10. h3 e4
40. Olympiad Open 2012 – Round 7.41 – Rahman, Ziaur – 0-1 – Cori, Jorge – G426 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. Nd5 O-O 6. Nxb4 Nxb4 7. d3 a5 8. Nf3 Re8 9. O-O d6 10. Bg5 h6
43. Olympiad 2018 – Round 2.4 – Gelfand, Boris – 1-0 – Duran Vega, Sergio – G128 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. Nd5 O-O 6. a3 Bd6 7. Nc3 Re8 8. e3 Bf8 9. Nge2 d6 10. O-O Bf5
6. World Blitz 2010 – Round 9.5 – Grischuk, Alexander – 0-1 – Nepomniachtchi, Ian – G57 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. Nd5 Nxd5 6. cxd5 Ne7 7. e3 O-O 8. Ne2 c6 9. a3 Bd6 10. Nc3 Qa5
FIDE GP Paris 2013 – Round 11.4 – Wang, Hao(ZJWZ) – 1/2-1/2 – Fressinet, Laurent – G62 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. Nd5 Bc5 6. e3 d6 7. Ne2 a6 8. b3 O-O 9. O-O Ba7 10. Bb2 Nxd5
FIDE World Blitz Championship 2025 – Round 1 – Rodrigue-Lemieux Shawn – 0-1 – Nepomniachtchi Ian – G3 1. c4 e5 2. g3 Nc6 3. Nc3 Nf6 4. Bg2 Bb4 5. Nd5 O-O 6. e3 Nxd5 7. cxd5 Ne7 8. Ne2 c6 9. a3 Bd6 10. Nc3 Qa5
Moscow Superblitz 2006 – Round 7 – Morozevich, Alexander – 1/2-1/2 – Korotylev, Alexey – G8 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. Nd5 Bc5 6. e3 a6 7. Ne2 Ba7 8. O-O O-O 9. a3 d6 10. b4 Bd7
World Blitz 2017 – Round 20.37 – Grigoriants, Sergey – 0-1 – Anton Guijarro, David – G1051 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. Nd5 Bc5 6. e3 d6 7. Ne2 Bb6 8. O-O O-O 9. Nxb6 axb6 10. Nc3 Bg4
World Blitz 2022 – Round 1.23 – Vakhidov, Jakhongir – 1/2-1/2 – Maghsoodloo, Parham – G16 1. c4 e5 2. g3 Nc6 3. Nc3 Nf6 4. Bg2 Bb4 5. Nd5 a5 6. e3 O-O 7. Ne2 d6 8. O-O Bc5 9. d4 Ba7 10. dxe5 Nxe5
World Blitz 2022 – Round 15.23 – Aravindh, Chithambaram VR. – 1-0 – Maghsoodloo, Parham – G791 1. g3 e5 2. c4 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. Nd5 a5 6. e3 O-O 7. Ne2 d6 8. O-O Bc5 9. Nec3 Bf5 10. d3 h6
World Blitz Final 2012 – Round 14 – Kotsur, Pavel – 0-1 – Ivanchuk, Vasyl – G102 1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 Bb4 5. Nd5 Bc5 6. d3 h6 7. e3 d6 8. Ne2 a6 9. a3 Ba7 10. O-O O-O

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