A25k — English: Closed

1.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 * ● 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, Bf8 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 b4, case forte d4, paire de fous.
Faiblesses adverses : Bc1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, Bf8 enfermé, 4 pièces non développées (C8, F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Be7 — Développer Bf8
● ...d5 — Rupture
● ...e4 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A25k — Closed

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

Eval: [+0.34]

Les coups candidats

4…Bc5 — 43.3% (5704 parties) →

Ambassadeurs : Vetter, Udo (28x), Korneev, Oleg (24x), Malewicz, Frank (18x), Miezis, Normunds (16x), Vecek, Marjan (13x), Hillebrand, Carsten (12x), Owens, Johnny (12x), Hjorth, Jesper (12x)

4…Bb4 — 32.0% (4222 parties) →

Ambassadeurs : Popov, Vladimir Valentinovich (18x), Owens, Johnny (12x), Polak, Tomas (11x), Mostowik, Daniel (8x), Suba, Mihai (7x), Vokhidov, Shamsiddin (7x), Bonoldi, Fabio (7x), Ruck, Robert (6x)

4…g6 — 7.8% (1022 parties)

Ambassadeurs : Ljangov, Petar (6x), August, Christian (3x), Galego, Luis (3x), Nemes, Gyorgy (3x), Artemiev, Vladislav (3x), Vecek, Marjan (3x), Naranja, Renato (2x), Vajda, Arpad (2x)

4…Be7 — 7.5% (984 parties)

Ambassadeurs : Weyerstrass, Ronald (3x), Winter, Irene (3x), Sprenger, Wendelin (3x), Flecher, Joseph (3x), Laco, Giuseppe (3x), Praggnanandhaa R (3x), Richter, Kurt P (2x), Chonillo, Javier (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…Bc5	4…Bb4	4…g6	4…Be7
<1800	704	44%	23%	6%	11%
1800-2200	5351	42%	32%	7%	9%
2200-2600	3823	46%	39%	9%	3%
2600+	99	44%	37%	16%	1%

Évolution par décennie (% des parties)

Décennie	N parties	4…Bc5	4…Bb4	4…g6	4…Be7
1900s	2	50%	—	—	50%
1910s	2	—	—	—	50%
1920s	14	57%	21%	7%	—
1930s	34	32%	29%	9%	18%
1940s	18	50%	17%	22%	11%
1950s	38	42%	11%	21%	13%
1960s	70	23%	23%	16%	16%
1970s	156	16%	47%	16%	8%
1980s	345	23%	38%	13%	11%
1990s	1767	34%	35%	11%	10%
2000s	3790	43%	31%	7%	8%
2010s	6097	49%	31%	6%	7%
2020s	842	40%	39%	8%	4%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…Bc5	49%	40%	▼ -8.4%
4…Bb4	31%	39%	▲ +8.0%
4…g6	6%	8%	▲ +1.9%
4…Be7	7%	4%	▼ -2.9%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 4 parties
Smyslov, Vladimir — 3 parties
Anand, Viswanathan — 2 parties
Alekhine, Alexander — 1 partie
Botvinnik, Mikhail — 1 partie
Kramnik, Vladimir — 1 partie
Carlsen, Magnus — 1 partie

Parties historiques

4…Bc5 — 43.3% (5704 parties)

1901 — Blackburne, Joseph vs Marshall, Frank — 1-0 — Monte Carlo MNC
1920 — John, Walter vs Berndtsson, Karl — 1/2-1/2 — Goteborg SWE
1925 — Koltanowski, George vs Colle, Edgar — 1/2-1/2 — Gand
1925 — Koltanowski, George vs Colle, Edgar — 1/2-1/2 — Brussels BEL
1925 — Tartakower, Savielly vs Gruenfeld, Ernst — 1-0 — Marienbad CZE

4…Bb4 — 32.0% (4222 parties)

1922 — Alekhine, Alexander vs Villeneau — 1-0 — Paris FRA
1926 — Kaprinay vs Hubner, Harald — 1-0 — Berlin GER
1926 — Kaprinay vs Huebner, Alan-Ari — 1-0 — FS 1930
1930 — Kashdan, Isaac vs Mieses, Jacques — 1-0 — Frankfurt GER
1933 — Mueller, Hans vs Glass, Eduard — 1-0 — Vienna AUT

4…g6 — 7.8% (1022 parties)

1929 — Capablanca, Jose vs Michell, Reginald — 1-0 — Ramsgate
1937 — Goldstein, Maurice Edwards vs Crowl, Frank Arthur — 1-0 — Perth AUS
1939 — Neikirkh, Oleg vs Gromer, Aristide — 1/2-1/2 — Buenos Aires ARG
1939 — Gonzalez Petrov, Daniel vs Vinuesa, Juan — 1-0 — Rosario ARG
1945 — Dzhogov, Vladislav vs Dimitrov Krastev, Krastjo — 0-1 — Sofia BUL

4…Be7 — 7.5% (984 parties)

1905 — Levitsky, Stepan vs Cigorin, Michael Ivanovic — 0-1 — St Petersburg RUS
1911 — Alapin, Simon vs Suechting, Hugo — 1/2-1/2 — Carlsbad CZE
1933 — Schmitt, Lars, Dr. vs Richter, Kurt P — 1-0 — Bad Salzbrunn
1933 — John, Walter vs Richter, Kurt P — 1-0 — Bad Salzbrunn
1933 — Feigin, M. vs Norcia, Fabrizio — 1-0 — Folkestone ENG

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

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	4 (g1, c1, a1, h1)	4 (c8, f8, 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, ● …d7-d5, ● …e5-e4

Partie
1911 Karlsbad – Round 1 – Alapin, Simon – 1/2-1/2 – Suechting, Hugo – G7 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. d4 Bg4 8. d5 Nb8 9. h3 Bh5 10. Nh2 Nbd7
1912 DSB-18.Kongress – Round 7 – Carls, Carl – 1/2-1/2 – Barasz, Zsigmond – G49 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 d6 5. d3 Be7 6. Nf3 O-O 7. O-O Bd7 8. h3 h6 9. Kh2 Re8 10. Bd2 Bf8
1929 Ramsgate schev – Round 1 – Capablanca, Jose – 1-0 – Michell, Reginald – G1 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Bd2 Ne7 7. Nf3 d6 8. O-O O-O 9. Qc1 Nh5 10. Bh6 f5
1934 NSW Ch – Round 6.1 – Purdy, Cecil J S – 1-0 – Merkel Solomon M – G8 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 d6 5. d3 Be7 6. f4 exf4 7. Bxf4 Bd7 8. Nh3 O-O 9. e4 Ne5 10. O-O c6
1939 Buenos Aires ol prel-B – Round 1 – Neikirkh, Oleg – 1/2-1/2 – Gromer, Aristide – G1 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. e3 Bg7 6. Nge2 O-O 7. O-O Ne7 8. f4 d6 9. d3 Rb8 10. h3 c6
1948 South Fallsburg ch-USA – Round 1 – Rubinow, Sol – 0-1 – Ulvestad, Olaf – G5 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 g6 5. e3 Bg7 6. Nge2 O-O 7. O-O d6 8. d4 exd4 9. Nxd4 Nxd4 10. Qxd4 Re8
1952 Budapest – Round 1 – Petrosian, Tigran A. – 1/2-1/2 – Smyslov, Vladimir – G1 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 d6 5. Nf3 Nd4 6. O-O Be7 7. d3 O-O 8. Ne1 c5 9. e3 Nc6 10. f4 Bg4
1952 Hungary Ch – Round 3 – Florian, Tibor – 1/2-1/2 – Vajda, Arpad – G7 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 g6 5. e3 Bg7 6. Nge2 d6 7. O-O O-O 8. d4 Nd7 9. Rb1 Nb6 10. c5 dxc5
1954 Olympiad final A – Round 1 – Barcza, Gedeon – 1-0 – Bobotsov, Milko G – G6 1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 g6 5. e3 Bg7 6. Nge2 d6 7. d4 O-O 8. O-O Nd7 9. b3 Nb6 10. Ba3 exd4
1956 Dresden – Round 1 – Kholmov, Ratmir D – 1-0 – Trajkovic, Dusan – G3 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 d6 5. Nf3 Bg4 6. h3 Be6 7. b3 d5 8. Ng5 d4 9. Nxe6 fxe6 10. Ne4 Be7
1956 Hoogovens – Round 2 – Kramer, Hanspeter – 1/2-1/2 – Stahlberg, Gideon – G12 1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 Be7 5. e3 O-O 6. Nge2 Re8 7. O-O Bf8 8. d3 d6 9. Rb1 Ne7 10. e4 h6
1957 DDR Ch 08th – Round 4 – Fuchs, Reinhart – 1/2-1/2 – Breustedt, Werner – G22 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 g6 5. e3 Bg7 6. Nge2 O-O 7. d4 d6 8. O-O Re8 9. d5 Ne7 10. e4 Bd7
1958 BUL Ch – Round ? – Kaikamdzozov, Jivko – 1/2-1/2 – Pantaleev, Dimitar Dimitrov – G4 1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 d6 5. d3 Be7 6. Nf3 Bg4 7. h3 Bd7 8. Bg5 h6 9. Be3 Qc8 10. Nd5 Qd8
1959 Quick Practice – Round ? – Collins, Richard Arnold – 1-0 – Collins, Paul H – G2 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. b3 Bg7 6. Bb2 O-O 7. Nf3 d6 8. O-O Be6 9. Rc1 Re8 10. Re1 Rc8
1960 Leipzig olm prel – Round 1 – Botvinnik, Mikhail – 1-0 – Kostjoerin, A. – G33 1. g3 e5 2. c4 Nf6 3. Nc3 Nc6 4. Bg2 d6 5. d3 Be7 6. Rb1 Bd7 7. b4 Qc8 8. Bd2 O-O 9. h3 Nd8 10. e3 Bc6
1960 Leipzig olm prel – Round 4 – Smyslov, Vasily – 1/2-1/2 – Naranja, Renato – G111 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. e3 d6 6. Nge2 Bg7 7. O-O O-O 8. d3 Be6 9. Nd5 Rb8 10. f4 Ne7
1961 Rheda ch OWL – Round 9 – Speer, Albrecht – 1-0 – Katzki – G16 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. e3 Qe7 6. Nge2 Bg7 7. a3 d6 8. b4 Be6 9. Nd5 Qd7 10. Qa4 O-O
1962 Fischer simul Copenhagen – Round ? – Fischer, Robert J – 1-0 – Pedersen, Borge – G1 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 d6 5. Nf3 Bf5 6. O-O Be7 7. d4 exd4 8. Nxd4 Bd7 9. b3 O-O 10. Bb2 Nxd4
1964 Capablanca Memorial – Round 18 – Evans, Larry M – 1/2-1/2 – Rossetto, Hector – G177 1. c4 Nc6 2. Nc3 e5 3. g3 Nf6 4. Bg2 Be7 5. e3 O-O 6. Nge2 d6 7. d4 Bg4 8. h3 Bxe2 9. Nxe2 Nd7 10. O-O Bf6
1964 Tel Aviv olm fin-B – Round 4 – Andersen, Baltser – 1-0 – Dueckstein, Andreas – G39 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 d6 5. e3 g6 6. Nge2 Bg7 7. Rb1 Bf5 8. d3 a5 9. a3 Qc8 10. h3 h5
1965 Novi Sad – Round 6 – Bertok, Mario Jr. – 1-0 – Djurovic, Bojan – G52 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. d4 exd4 8. Nxd4 Nxd4 9. Qxd4 c6 10. b3 Qa5
1965 POL Ch 22th – Round 2 – Grabczewski, Romuald – 1/2-1/2 – Tarnowski, Alfred – G7 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Be7 5. Nf3 d6 6. O-O Be6 7. d3 h6 8. a3 a5 9. Bd2 O-O 10. Rb1 Qd7
1965 Reggio Emilia 6566 – Round ? – Ujtelky, Maximilian – 1-0 – Wagner, Anselm – G5 1. c4 Nf6 2. g3 Nc6 3. Bg2 e5 4. Nc3 g6 5. a3 Bg7 6. b4 O-O 7. Rb1 Ne7 8. e4 c6 9. Qb3 d6 10. Nf3 h6
1965 WchT U26 12. fin-A – Round 7 – Stepak, Yedael – 1/2-1/2 – Hennings, Artur – G40 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Rb1 a5 7. Bd2 d6 8. a3 O-O 9. b4 axb4 10. axb4 Nd4
1966 Kiev (Ukraine) – Round 2 – Kots, Yuri I – 1-0 – Zilberman, Nathan R – G3 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 g6 5. e3 Bg7 6. Nge2 O-O 7. O-O d6 8. d4 exd4 9. exd4 Re8 10. h3 Bd7
1966 La Habana olm prel – Round 4 – Sliwa, Bogdan – 1-0 – Chonillo, Javier – G62 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 Be7 5. a3 a5 6. Nf3 O-O 7. d4 exd4 8. Nxd4 Ne5 9. b3 c6 10. f4 Ng6
1967 DDR Ch 16th – Round 17 – Baumbach, Friedrich, Dr. – 1/2-1/2 – Brameyer, Hermann – G86 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 g6 5. Nf3 Bg7 6. O-O O-O 7. d4 exd4 8. Nxd4 Ne5 9. b3 d6 10. Qd2 Rb8
1972 Skopje ol (Men) fin-A – Round 14 – Trapl, Jindrich – 1/2-1/2 – Gereben, Erno – G85 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 d6 5. d3 Be7 6. e3 O-O 7. Nge2 Be6 8. Nd5 Qd7 9. h3 Bd8 10. e4 Ne8
1975 URS Team Ch – Round 1 – Saakova, Anzhelina – 1-0 – Mkrtichyan, Alla – G21 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 d6 5. d3 Be7 6. Rb1 a5 7. a3 Bg4 8. b4 axb4 9. axb4 Qc8 10. h3 Be6
FIDE World Cup 2019 – Round 3.4 – Le, Quang Liem – 1/2-1/2 – Artemiev, Vladislav – G337 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 g6 5. Nf3 Bg7 6. d4 exd4 7. Nxd4 O-O 8. O-O Re8 9. Nc2 d6 10. b3 Bf5
Interpolis 1979 – Round 8 – Larsen, Bent – 1/2-1/2 – Romanishin, Oleg M – G33 1. g3 e5 2. c4 Nf6 3. Bg2 Nc6 4. Nc3 g6 5. Nf3 Bg7 6. d4 exd4 7. Nxd4 O-O 8. O-O Re8 9. Nxc6 dxc6 10. Qb3 Qe7
Superbet Blitz 2019 – Round 18.5 – So, Wesley – 0-1 – Artemiev, Vladislav – G90 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 g6 5. Nf3 Bg7 6. d4 exd4 7. Nxd4 O-O 8. O-O Re8 9. Nxc6 dxc6 10. Qb3 Qe7
SuperGM 2000 – Round 7 – Leko, Peter – 1/2-1/2 – Shirov, Alexei – G14 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 g6 5. e3 Bg7 6. Nge2 h5 7. h3 d6 8. d4 Bd7 9. d5 Na5 10. Qd3 O-O
Tal Memorial Blitz 2016 – Round 2.3 – Gelfand, Boris – 0-1 – Mamedyarov, Shakhriyar – G8 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. e3 O-O 7. Nge2 d6 8. O-O Be6 9. Nd5 Rb8 10. Nec3 Ne7

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