A25n — English: Closed

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 * ○ Trait aux Blancs

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 : arriéré f7, 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, case forte e5, paire de fous.
Faiblesses adverses : Bc1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, arriéré f7, 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
● ...d5 — Rupture
● ...e4 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A25n — Closed

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7

Eval: [+0.26]

Les coups candidats

5.d3 — 27.9% (4322 parties) →

Ambassadeurs : Miezis, Normunds (31x), McNab, Colin A (15x), Balashov, Yuri (11x), Snape, Ian L (11x), Weyerstrass, Ronald (11x), Csom, Istvan (10x), Jussupow, Artur (10x), Reizniece, Dana (10x)

5.e3 — 27.8% (4306 parties) →

Ambassadeurs : Cvetkovic, Srdjan (27x), Contin, Daniel (21x), Sehner, Norbert (18x), Bukal, Vladimir Jr. (14x), Hort, Vlastimil (12x), Jussupow, Artur (12x), Petursson, Margeir (11x), Pribyl, Josef (10x)

5.e4 — 17.9% (2773 parties) →

Ambassadeurs : Bischoff, Klaus (22x), Löschnauer, Rüdiger (22x), Keber, Ernst (20x), Palladino, Mario (20x), Lauer, Roland (20x), Lanzani, Paolo (20x), Salzmann, Stefan (20x), Grant, Jonathan I M (14x)

5.Rb1 — 13.5% (2086 parties) →

Ambassadeurs : Sunye Neto, Jaime (13x), Foisor, Ovidiu-Doru (13x), Taimanov, Mark (11x), Bertok, Mario Jr. (10x), Giardelli, Sergio C. (10x), Hort, Vlastimil (9x), Jacobsen, Bo (9x), Duncan, Chris R (8x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5.d3	5.e3	5.e4	5.Rb1
<1800	297	30%	25%	19%	3%
1800-2200	5267	29%	26%	22%	8%
2200-2600	6800	28%	27%	17%	19%
2600+	235	30%	23%	7%	32%

Évolution par décennie (% des parties)

Décennie	N parties	5.d3	5.e3	5.e4	5.Rb1
1920s	10	50%	10%	—	—
1930s	41	49%	41%	—	—
1940s	26	12%	69%	4%	—
1950s	77	27%	53%	1%	9%
1960s	355	25%	40%	4%	21%
1970s	545	26%	33%	8%	23%
1980s	1128	22%	35%	9%	23%
1990s	3425	28%	30%	11%	17%
2000s	4452	29%	27%	20%	11%
2010s	4637	29%	23%	26%	9%
2020s	777	30%	29%	19%	12%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5.d3	29%	30%	▲ +0.9%
5.e3	23%	29%	▲ +6.5%
5.e4	26%	19%	▼ -6.6%
5.Rb1	9%	12%	▲ +2.6%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 8 parties
Karpov, Anatoly — 8 parties
Kasparov, Garry — 7 parties
Tal, Mikhail — 6 parties
Karpov, Aleksandr — 6 parties
Anand, Viswanathan — 5 parties
Botvinnik, Mikhail — 4 parties
Ding, Liren — 4 parties
Euwe, Max — 3 parties
Ju, Wenjun — 3 parties
Gukesh D — 3 parties
Lasker, Emanuel — 2 parties
Kramnik, Vladimir — 2 parties
Alekhine, Alexander — 1 partie
Steinitz, Wilhelm — 1 partie
Carlsen, Magnus — 1 partie

Parties historiques

5.d3 — 27.9% (4322 parties)

1922 — Alekhine, Alexander vs Tarrasch, Siegbert — 1-0 — Vienna AUT
1922 — Steinitz, Wilhelm vs Lasker, Emanuel — 1/2-1/2 — New York, NY USA
1925 — Carls, Carl vs Tartakower, Savielly — 1/2-1/2 — Baden-Baden GER
1926 — Antze, Oskar vs Speijer, Abraham — 1-0 — Groningen NED
1927 — Buerger, Victor vs Michell, Reginald — 1-0 — Hastings Town Hall

5.e3 — 27.8% (4306 parties)

1923 — Colle, Edgar vs Mieses, Jacques — 1-0 — Hastings ENG
1932 — Robitsek Paul vs Palda, Karl — 1-0 — Vienna AUT
1935 — Kibbermann, Feliks vs Vaitonis, Povilas — 1-0 — Warsschau ol
1936 — Endzelins, Lucius vs Zita, Frantisek — 0-1 — Schack-olympiaden i Munchen
1936 — Chan Wo Kan, Lea vs Yudovich, Mikhail M — 1/2-1/2 — Moscow RUS

5.e4 — 17.9% (2773 parties)

1947 — Kuzminykh, Evgeny vs Zhukhovitsky, Samuel — 1-0 — Leningrad RUS
1955 — Wolk, Sigmund vs Scheipl, Ralf — 0-1 — Reichenbach
1961 — Buslaev, Aleksander vs Maslov, Leonid P — 0-1 — Palanga
1964 — Eliskases, Erich vs Reshevsky, Samuel — 1/2-1/2 — Tel Aviv ISR
1966 — Radulov, Ivan vs Jakobsen, Ole — 1/2-1/2 — WchTJ U26 fin-A

5.Rb1 — 13.5% (2086 parties)

1953 — Filip, Miroslav vs Sajtar, Jaroslav — 1/2-1/2 — Prague CZE
1953 — Szabo, Laszlo vs Barda, George-Alexandru — 1-0 — Bucharest ROU
1953 — Szabo, Ladislav vs Barda, Olaf — 1-0 — Bucharest ROU
1954 — Tapaszto Binet, Laszlo vs Szabo, Ladislav — 0-1 — Hungary ch
1956 — Ilivitsky, Georgy A vs Pachman, Ludek — 1/2-1/2 — Prague CZE

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● f7
Chaînes	● f2→g3, h2→g3	● f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Actif (mob. 6)
Bg7		● Bg7 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (g1, 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	semi-ouvert
Ruptures	● c4-c5, ● d2-d3, ● e2-e3, ● f2-f3	● …d7-d6, ● …d7-d5, ● …e5-e4, ● …f7-f6, ● …f7-f5

Partie
1926 Spa – Round 8 – Sapira, Emmanuel – 1/2-1/2 – Tartakower, Savielly – G10 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. d4 exd4 7. Nb5 Nge7 8. Nbxd4 O-O 9. O-O Nf5 10. Nxc6 bxc6
1927 Moskou ch-URS – Round 14 – Romanovsky, Pjotr – 1-0 – Ilyin Zhenevsky, Alexander – G37 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. O-O O-O 7. d3 b6 8. Bd2 Bb7 9. e4 f5 10. Nd5 h6
1931 Prague ol – Round 15 – Feigin, M. – 0-1 – Skalicka, Karel – G59 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. O-O O-O 7. d3 d6 8. Bd2 h6 9. Qc2 Be6 10. Rad1 Qd7
1940 Ventnor City – Round 10 – Hanauer, Milton Loeb – 1/2-1/2 – Adams, Weaver – G36 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. O-O O-O 7. d3 d6 8. Bd2 h6 9. Rb1 Be6 10. b4 d5
1946 Nottingham ch-BCF – Round 10 – Golombek, Harry – 1-0 – Aabel Thomas Eapen – G56 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nh3 d6 6. d3 Be6 7. f4 Qd7 8. Ng5 Nge7 9. O-O O-O 10. Nd5 h6
1947 Hilversum zt – Round 2 – Castaldi, Vincenzo – 1-0 – Blau, Max – G20 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. O-O d6 7. d3 O-O 8. Bd2 h6 9. Rb1 Be6 10. b4 d5
1955 Moskou ch-URS – Round 1 – Kortchnoi, V. – 0-1 – Lisitsin, Gleb – G6 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. O-O Nge7 7. Rb1 O-O 8. b4 Bf5 9. d3 Qd7 10. b5 Nd8
1958 Asztalos Memorial – Round 3 – Malich, Burkhard, Dr. – 0-1 – De Paoli, Emilio – G6 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. a3 Nge7 6. d3 d6 7. e3 Be6 8. Nd5 Nf5 9. Ne2 O-O 10. O-O Qd7
1959 Buenos Aires LR – Round 2 – Garcia Rodriguez, Raimundo – 1-0 – Mazzoleni, Julio – G3 1. c4 Nc6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. Rb1 d5 7. cxd5 Nxd5 8. Nxe5 Nxe5 9. Nxd5 Bf5 10. d3 Qd7
1959 UKR Ch – Round 16 – Ousatchi, Mark – 1-0 – Makarov, Andrei – G117 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. h4 h6 7. d3 d6 8. Bd2 Be6 9. Qc1 Qd7 10. Rb1 f5
1961 Marianske Lazne zt – Round 5 – Olafsson, Fridrik – 1-0 – Ljungquist, Lennart – G31 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. Rb1 Nd4 7. b4 O-O 8. O-O c6 9. b5 d6 10. bxc6 Nxf3+
1962 Spartak Ch – Round 8 – Pelts, Roman – 0-1 – Zhukhovitsky, Samuel – G56 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. O-O Nge7 7. d3 O-O 8. Rb1 a5 9. Bd2 h6 10. a3 Be6
1963 CSR Ch sf – Round 9.3 – Ujtelky, Maximilian – 1/2-1/2 – Stulik, Vlastimil – G40 1. g3 e5 2. Bg2 Nc6 3. c4 g6 4. Nc3 Bg7 5. a3 d6 6. e3 Bd7 7. Nge2 Qc8 8. h4 h5 9. b4 Nh6 10. Bb2 O-O
1964 BRA Ch – Round 16 – Alves, Francisco H B Severino – 0-1 – Gadia, Olicio – G54 1. c4 g6 2. g3 Bg7 3. Bg2 e5 4. Nc3 Nc6 5. Nf3 Nge7 6. O-O O-O 7. d3 d6 8. Rb1 f5 9. Bd2 h6 10. b4 g5
1965 SM - Falkoping – Round 12 – Krantz, Kjell – 1-0 – Nilsson, Zandor – G27 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. O-O O-O 7. d3 d5 8. cxd5 Nxd5 9. Nxe5 Nxc3 10. Nxc6 Nxe2+
1966 La Habana olm prel – Round 3 – Hobson, Richard – 0-1 – Polugaevsky, Lev – G80 1. c4 e5 2. Nc3 g6 3. g3 Nc6 4. Bg2 Bg7 5. Nf3 f5 6. e3 e4 7. Ng1 Ne5 8. Bf1 Nf6 9. d4 exd3 10. Bxd3 Nxd3+
1966 Malmo – Round 6 – Alfredsson, Ove – 0-1 – Kinnmark, Ove – G13 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. O-O O-O 7. d3 h6 8. Bd2 d6 9. Rb1 Be6 10. b4 Qd7
1966 Tel-Aviv it – Round 7 – Kraidman, Yair – 1/2-1/2 – Gheorghiu, Florin – G12 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. O-O O-O 7. d3 d6 8. Rb1 a5 9. a3 Nd4 10. Bd2 Nxf3+
1967 CSR Ch – Round 4 – Ujtelky, Maximilian – 1-0 – Kubicek, Antonin – G24 1. c4 g6 2. g3 Bg7 3. Bg2 e5 4. Nc3 Nc6 5. a3 Nge7 6. b4 O-O 7. e3 Nf5 8. Nge2 d6 9. d3 a6 10. Qc2 Rb8
1967 Oxford ch-BCF – Round 10 – Golombek, Harry – 1/2-1/2 – Lee, Paak Hei – G89 1. c4 Nc6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. d3 O-O 7. Bd2 d6 8. O-O h6 9. Nd5 Be6 10. Ne1 Kh7
1968 Havirov – Round 7 – Jankovec, Ivan – 0-1 – Blatny, Frantisek – G22 1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. b3 d6 6. e3 f5 7. Nge2 Nf6 8. Bb2 O-O 9. d4 Nh5 10. dxe5 Nxe5
1968 Kislovodsk – Round 1 – Simagin, Vladimir – 1/2-1/2 – Gufeld, Eduard – G29 1. g3 g6 2. Bg2 Bg7 3. c4 e5 4. Nc3 Nc6 5. b3 d6 6. Bb2 Be6 7. d3 Qd7 8. e3 Nge7 9. Nd5 Bxd5 10. cxd5 Nb4
1969 Athens zt – Round 3 – Levy, David N L – 1/2-1/2 – Siaperas, Triantafyllos – G12 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. O-O f5 7. d3 Nf6 8. Rb1 O-O 9. b4 a6 10. a4 Rb8
1969 Hoogovens – Round 13 – Lombardy, William J – 1/2-1/2 – Ree, Hans – G112 1. g3 g6 2. Bg2 Bg7 3. c4 e5 4. Nc3 Nc6 5. b3 d6 6. Bb2 h5 7. h4 Nh6 8. d3 O-O 9. Qd2 Bd7 10. e3 a6
1969 Sarajevo 12th – Round 1 – Bukal, Vladimir Jr. – 1-0 – Bogdanovic, Radivoje – G4 1. g3 g6 2. Bg2 Bg7 3. c4 e5 4. Nc3 Nc6 5. Nf3 d6 6. O-O f5 7. d3 Nf6 8. Rb1 a5 9. a3 O-O 10. b4 axb4
1975 URS Team Ch – Round 5 – Agzamov, Georgy – 1-0 – Mamatov, Dair – G13 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. d3 O-O 7. O-O d6 8. Bd2 h6 9. Rb1 Be6 10. e4 f5
20. European Teams 2015 – Round 5.8 – Kovalenko, Igor – 1/2-1/2 – Stevic, Hrvoje – G230 1. c4 e5 2. g3 Nc6 3. Nc3 g6 4. Bg2 Bg7 5. Nf3 d6 6. Rb1 a5 7. a3 f5 8. d3 Nf6 9. O-O O-O 10. b4 axb4
Biel Interzonal 1993 – Round 3 – Smirin, Ilia – 1-0 – Moutousis, Konstantinos – G60 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 f5 6. O-O Nf6 7. d3 d6 8. Rb1 a5 9. Nd5 O-O 10. Bg5 Be6
Brussels blitz 1987 – Round 1 – Ljubojevic, Ljubomir – 1/2-1/2 – Short, Nigel D – G6 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 f5 6. O-O d6 7. d3 Nf6 8. Rb1 O-O 9. b4 a6 10. a4 h6
World Blitz 2015 – Round 3.4 – Ivanchuk, Vasyl – 1-0 – Vitiugov, Nikita – G170 1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Nf3 d6 6. O-O f5 7. d3 Nf6 8. Rb1 a5 9. a3 O-O 10. b4 axb4
World Cup 1988 – Round 1 – Ribli, Zoltan – 1/2-1/2 – Ehlvest, Jaan – G3 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. b3 d6 6. Bb2 Nh6 7. e3 O-O 8. Nge2 Bd7 9. O-O Qc8 10. d4 Bh3

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