A25l — English: Closed

1.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : 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, case forte g4, avant-poste g4(C), 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

A25l — Closed

1.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6

Eval: [+0.34]

Les coups candidats

5.d3 — 48.3% (2570 parties) →

Ambassadeurs : Kurajica, Bojan (9x), Lyell, Mark (8x), Mitkov, Nikola (7x), Weyerstrass, Ronald (6x), Perez Garcia, Hebert (5x), Sher, Miron (5x), Prelevic, Dusko (5x), Byron, Alan M (5x)

5.e3 — 40.8% (2171 parties)

Ambassadeurs : Spraggett, Kevin (13x), Lyell, Mark (12x), Moody, David W (8x), Vaulin, Alexander P. (8x), Jovanovic, Zoran (6x), Eingorn, Vereslav S (5x), Nestorovic, Dejan (5x), Bukal, Vladimir Jr. (5x)

5.a3 — 5.1% (272 parties)

Ambassadeurs : Blum, Gernot (2x), Kern, Guido (2x), Kovalevskaya, Ekaterina (2x), Dive, Russell John (2x), Webster, Richard J (2x), Duquesnoy, Jean-Philippe (2x), Lie, Kjetil A. (2x), Kunin, Vitaly (2x)

5.Nf3 — 2.7% (141 parties)

Ambassadeurs : Donati, Michele (4x), Thompson, Ian D (3x), Rosenberg, Arie (2x), Levy, David N L (2x), Kurz, Ralf (2x), Ruckschloss, Karol (2x), Kurajica, Bojan (2x), Jacobsen, Bo (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5.d3	5.e3	5.a3	5.Nf3
<1800	197	51%	38%	6%	2%
1800-2200	2291	52%	38%	5%	3%
2200-2600	1892	47%	42%	6%	2%
2600+	39	28%	59%	8%	5%

Évolution par décennie (% des parties)

Décennie	N parties	5.d3	5.e3	5.a3	5.Nf3
1880s	1	—	—	100%	—
1890s	1	100%	—	—	—
1910s	1	—	100%	—	—
1920s	6	17%	67%	—	—
1930s	10	40%	50%	—	—
1940s	10	50%	30%	—	—
1950s	30	43%	50%	—	—
1960s	75	48%	44%	1%	3%
1970s	108	46%	44%	4%	4%
1980s	209	37%	54%	3%	2%
1990s	833	45%	45%	3%	3%
2000s	1523	50%	40%	5%	2%
2010s	2099	51%	37%	6%	3%
2020s	412	44%	43%	4%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5.d3	51%	44%	▼ -6.2%
5.e3	37%	43%	▲ +6.2%
5.a3	6%	4%	▼ -2.1%
5.Nf3	3%	3%	-0.1%

Joueurs célèbres

Champions du monde dans cette position

Gukesh D — 4 parties
Karpov, Aleksandr — 3 parties
Botvinnik, Mikhail — 2 parties
Karpov, Anatoly — 2 parties
Lasker, Emanuel — 1 partie
Fischer, Robert James — 1 partie
Tal, Mikhail — 1 partie
Smyslov, Vladimir — 1 partie
Anand, Viswanathan — 1 partie
Kramnik, Vladimir — 1 partie
Carlsen, Magnus — 1 partie

Parties historiques

5.d3 — 48.3% (2570 parties)

1898 — Blackburne, Joseph vs Schiffers, Emanuel — 1/2-1/2 — Vienna AUT
1920 — De Koning Fok vs Lasker, Emanuel — 1/2-1/2 — Amsterdam NED
1935 — Dake, Arthur William vs Steiner, Herman — 1/2-1/2 — Los Angeles, CA USA
1936 — Lundin, Erik vs Ahues, Carl — 1/2-1/2 — Munich GER
1936 — Apscheneek, Fricis vs List, Paul — 0-1 — Riga LAT

5.e3 — 40.8% (2171 parties)

1912 — Carls, Carl vs Suechting, Hugo — 0-1 — Hamburg GER
1921 — Carls, Carl vs John Wade Wec-Nyin — 0-1 — Hamburg GER
1922 — Carls, Carl vs Weenink, Henri — 1/2-1/2 — Berlin GER
1922 — Carls, Carl vs Gomez Gruber, Maria Gabriela — 1-0 — Bad Oeynhausen GER
1922 — Hilse, Wilhelm H vs Post, Erhard — 0-1 — Bad Oeynhausen GER

5.a3 — 5.1% (272 parties)

1889 — Bird, Henry vs Martinez, Dion M — 0-1 — New York, NY USA
1968 — Naranja, Renato vs Lombardy, William J — 1-0 — Lugano SUI
1974 — Norby, Peter H. vs Jensen, Allan Astrup — 1-0 — Nordre Birk turn.
1976 — Reissmann, Wilfried vs Taeger, Winfried — 0-1 — Germany West
1976 — Perez Perez, Francisco Jose vs Brena Garcia, Wilfredo — 1-0 — Cienfuegos City CUB

5.Nf3 — 2.7% (141 parties)

1967 — Rosenberg, Arie vs Aloni, Itzchak — 0-1 — Israel
1969 — Karpov, Aleksandr vs Evrosimovsky — 1/2-1/2 — Moscow RUS
1972 — Babula, Milan vs Stefl, Vladimir — 1-0 — Brno CZE
1973 — Alonso-Lej De Las Casas, Fernando vs Hase, Juan Carlos — 1-0 — Santa Fe
1973 — Rosenberg, Arie vs Levy, David N L — 0-1 — Netanya ISR

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● d5 (3v1)	● b4 (2v0), ● d4 (2v0), ● g4 (2v0)
Cases faibles	● e4	—
Centre	● d5 (3v1)	● 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, ● …f5-f4

Partie
1921 DSB-21.Kongress – Round 1 – Carls, Carl – 0-1 – John Wade Wec-Nyin – G1 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 Bb4 6. Nge2 O-O 7. O-O d6 8. d4 Ne7 9. Qb3 Bxc3 10. Qxc3 Ng6
1922 Bad Oeynhausen – Round 5 – Carls, Carl – 1-0 – Gomez Gruber, Maria Gabriela – G13 1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 Nc6 5. e3 Be7 6. d4 e4 7. Nge2 b6 8. Nf4 O-O 9. O-O Bb7 10. f3 exf3
1922 Bad Oeynhausen – Round 6 – Hilse, Wilhelm H – 0-1 – Post, Erhard – G15 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 Bb4 6. Nd5 Nxd5 7. cxd5 Ne7 8. Qh5+ g6 9. Qh4 e4 10. Qf6 Rf8
1931 Moskou ch-URS – Round 1 – Kirillov, Vladimir – 1/2-1/2 – Alatortsev, Vladimir N. – G6 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. Nh3 Be7 6. O-O O-O 7. d3 Qe8 8. Nd5 Bd8 9. Bg5 Ng4 10. f3 Nh6
1933 Leningrad ch-URS – Round 1 – Kirillov, Vladimir – 0-1 – Alatortsev, Vladimir N. – G1 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 Be7 6. d4 d6 7. Nge2 O-O 8. O-O Qe8 9. d5 Nd8 10. Bd2 Qh5
1939 Kemeri / Riga – Round 1 – Melngailis, Emilis – 0-1 – Bogoljubow, Efim – G3 1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 Nc6 5. e3 Nb4 6. d3 c6 7. a3 Na6 8. d4 e4 9. Nge2 d5 10. cxd5 cxd5
1948 Karlovy Vary – Round 1 – Richter, Edgar – 0-1 – Opocensky, Karel – G1 1. c4 f5 2. g3 e5 3. Bg2 Nf6 4. Nc3 Nc6 5. Nh3 b6 6. O-O Bb7 7. d3 Bc5 8. e3 Qe7 9. d4 Bd6 10. a3 a5
1949 Venice – Round 10 – Golombek, Harry – 1-0 – Prins, Lodewijk – G73 1. c4 f5 2. Nc3 Nf6 3. g3 e5 4. Bg2 Nc6 5. Nh3 Bc5 6. O-O O-O 7. d3 d6 8. e3 Kh8 9. a3 a5 10. Bd2 Qe8
1950 Venice – Round 2 – Golombek, Harry – 1/2-1/2 – Steiner, Heinrich Jun. – G27 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. Nh3 Bc5 6. O-O O-O 7. d3 h6 8. Kh1 a5 9. f4 d6 10. Bd2 Ng4
1952 USA Ch playoff – Round 11 – Evans, Larry M – 1-0 – Steiner, Herman – G7 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 e4 6. d3 Bb4 7. Ne2 exd3 8. Qxd3 Ne5 9. Qxf5 Qe7 10. Qc2 Nxc4
1954 DDR Ch 05th – Round 1 – Platz, Hans – 1-0 – Kuhn, Paul – G1 1. c4 e5 2. Nc3 f5 3. g3 Nc6 4. Bg2 Nf6 5. e3 Bc5 6. Nge2 O-O 7. d4 Bb4 8. O-O d6 9. Nd5 Nxd5 10. Bxd5+ Kh8
1955 CSR Ch – Round 6 – Dolezal, Jiri – 1-0 – Hostinsky, Zdenek – G42 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 d6 6. d3 Be7 7. Nge2 O-O 8. O-O Qe8 9. Rb1 a5 10. a3 Nd8
1956 CSR Ch – Round 16 – Ujtelky, Maximilian – 1-0 – Florian, Jaromir – G144 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 d6 6. d4 Bd7 7. Nge2 g6 8. a3 Bg7 9. b4 a6 10. O-O O-O
1956 CSR Ch – Round 3 – Stulik, Vlastimil – 1/2-1/2 – Florian, Jaromir – G19 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 Bb4 6. Nge2 O-O 7. O-O Bxc3 8. Nxc3 d6 9. d4 Rb8 10. b3 Bd7
1957 DDR Ch 08th – Round 10 – Fuchs, Reinhart – 0-1 – Schmidt, Hermann – G64 1. c4 Nc6 2. Nc3 e5 3. g3 f5 4. Bg2 Nf6 5. e3 d6 6. Nge2 Be7 7. Nd5 O-O 8. d3 Be6 9. Bd2 a5 10. a3 Qd7
1959 OWL Ch – Round 6 – Hantke Rolf – 1-0 – Stoppkotte, Gerhard – G9 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e4 d6 6. Nge2 Be7 7. O-O O-O 8. d4 Nxe4 9. Nxe4 fxe4 10. d5 Nd4
1960 Stockholm SWE – Round ? – Nilsson, Zandor – 1-0 – Skld, K – G12 1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 Nc6 5. e3 e4 6. d3 Bb4 7. Ne2 Ne5 8. dxe4 fxe4 9. O-O Nf3+ 10. Kh1 Ng4
1963 Split ol women – Round 6 – Renoy Chevrier, Anne Marie – 0-1 – Lazarevic, Milunka – G14 1. c4 f5 2. Nc3 Nf6 3. g3 e5 4. Bg2 Nc6 5. e3 Be7 6. Nge2 O-O 7. O-O d6 8. d3 Qe8 9. f4 Qh5 10. h3 Kh8
1963 Stevenson Memorial 11th – Round 11 – Collins, Richard Arnold – 1-0 – Dymond, Michael John – G20 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e4 d6 6. Nge2 Be6 7. b3 Be7 8. d4 Nxd4 9. Nxd4 exd4 10. Qxd4 fxe4
1964 OWL Ch – Round 3 – Hantke Rolf – 1-0 – Speer, Albrecht – G7 1. c4 f5 2. g3 Nf6 3. Bg2 e5 4. Nc3 Nc6 5. e4 fxe4 6. Nxe4 Nxe4 7. Bxe4 Qf6 8. Nf3 Bc5 9. d3 d6 10. Bg5 Qf7
1964 Rubinstein Memorial – Round 13 – Tsvetkov, Alexandar K – 1-0 – Filipowicz, Andrzej – G55 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 d6 6. d4 g6 7. Nge2 Bg7 8. b3 O-O 9. Bb2 Nh5 10. Nd5 f4
1964 Tel Aviv olm fin-B – Round 12 – Naranja, Renato – 1-0 – Silva Nazzari, Raul R – G140 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 d6 6. d4 g6 7. Nf3 Bg7 8. O-O O-O 9. d5 Nb8 10. Bd2 a5
1966 Sunderland ch-BCF – Round 8 – Conroy, Mike J – 1/2-1/2 – Fazekas, Stephan – G70 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 Bc5 6. Nge2 O-O 7. d4 exd4 8. exd4 Bb6 9. O-O d6 10. Rb1 a5
1967 IBM-B – Round 1 – Gereben, Erno – 1-0 – Smederevac, Petar – G1 1. c4 f5 2. Nc3 Nf6 3. g3 e5 4. Bg2 Nc6 5. e3 d6 6. Nge2 Be7 7. d4 O-O 8. a3 Qe8 9. b4 a5 10. b5 Nd8
1967 ISR Ch – Round 1 – Rosenberg, Arie – 0-1 – Aloni, Itzchak – G1 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. Nf3 e4 6. Ng5 Bc5 7. O-O O-O 8. d3 h6 9. Nh3 exd3 10. exd3 Nd4
1968 Copenhagen ch-DEN – Round 9 – Norby, Peter H. – 1-0 – Moe, Mogens – G41 1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. Nc3 Nc6 5. Rb1 Be7 6. Nd5 a5 7. d3 O-O 8. e3 Nxd5 9. cxd5 Nb8 10. Bd2 d6
1968 Lugano ol (Men) – Round 1 – Naranja, Renato – 1-0 – Lombardy, William J – G5 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. a3 g6 6. b3 Bg7 7. Bb2 O-O 8. e3 d6 9. Nge2 Qe7 10. d4 Nd8
1968 Prague U26 – Round 15 – Kupka, Slavoj – 1/2-1/2 – Zajic, Jiri – G62 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 d5 6. Nxd5 Nxd5 7. cxd5 Nb4 8. d3 Nxd5 9. a3 Be6 10. Ne2 Qd7
41. Olympiad Open 2014 – Round 11.18 – Granda Zuniga, Julio E – 1/2-1/2 – Caruana, Fabiano – G768 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 Bb4 6. Nge2 O-O 7. O-O Bxc3 8. Nxc3 d6 9. d4 e4 10. f3 exf3
USA Ch 2017 – Round 5.2 – Nakamura, Hikaru – 1/2-1/2 – Naroditsky, Daniel – G26 1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. a3 g6 6. e3 e4 7. d3 exd3 8. Nf3 Bg7 9. Qxd3 d6 10. O-O O-O
World Rapid 2019 – Round 15.47 – Gukesh D – 1-0 – Sasikiran, Krishnan – G981 1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. e3 Bb4 6. Nd5 e4 7. a3 Bd6 8. d3 O-O 9. dxe4 Nxe4 10. Nf3 Ne7

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