Structure de pions
♔ Blancs ♚ Noirs
Pions doublés
Pions isolés
Arriérés
Chaînes ● e2→d3, f2→g3, h2→g3, d3→c4
Passés
Majorité
Cases
♔ Blancs ♚ Noirs
Cases fortes ● b5 (2v0), ● d5 (3v1) ● b4 (2v0), ● d4 (2v0), ● g4 (2v0)
Cases faibles
Centre ● d5 (3v1), ● e4 (3v2) ● d4 (2v0), ● e5 (1v0)
Colonnes et diagonales
♔ Blancs ♚ Noirs
Pièces
♔ Blancs ♚ Noirs
Bc1 ● Bc1 Non développé (mob. 5)
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 mobile
Ruptures ● d3-d4, ● e2-e4, ● f2-f4 ● …d7-d5, ● …e5-e4, ● …f5-f4

A25q — English: Closed

1.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6 5.d3 *   ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bB
bQ
bK
bB
bR
bP
bP
bP
bP
bP
bP
bN
bN
Case forte (2v0)
Case forte (3v1)
bP
bP
wP
wN
wPPion central
wP
wP
wP
wP
wP
wBFou actif — mobilité 6
wP
wR
wBFou actif — mobilité 5
wQ
wK
wN
wR
abcdefgh
Plans. e3 (Solidifier le centre — 32 % des parties) ; Bd2 (Fou actif (mobilité 5), Développer c1 — 25 % des parties) ; Nf3 (Développer g1 — 18 % des parties) ; a3 (Préparer expansion aile dame — 6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wN
wK
wQ
wB
wR
wP
wB
wP
wP
wP
wP
wP
wP
wN
Avant-poste C (accessible)
Avant-poste C (accessible)
wP
Case forte (2v0)
bP
bP
bN
bN
bP
bP
bP
bP
bP
bP
bR
bBFou actif — mobilité 5
bK
bQ
bB
bR
hgfedcba
Plans. ...Bb4 (Clouer c3, Fou actif (mobilité 7), Développer f8 — 38 % des parties) ; ...Bc5 (Fou actif (mobilité 9), Développer f8 — 24 % des parties) ; ...g6 (Préparer le fianchetto — 14 % des parties) ; ...Be7 (Fou actif (mobilité 5), Développer f8 — 12 % des parties) ; ...d6 (Libérer Bc8 — 11 % des parties).
Avantages
Faiblesses
Diagonale active
Plans
Partie
1935 Margate – Round 6 – Thomas, George Alan – 1/2-1/2 – Mieses, Jacques – G29
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. d3 Nf6 5. Bg2 Bb4 6. Bd2 Qe7 7. e3 O-O 8. Nge2 d6 9. O-O Bxc3 10. Bxc3 Be6
1936 Olympiad (unofficial) – Round 4 – Lundin, Erik – 1/2-1/2 – Ahues, Carl – G27
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. Nf3 O-O 7. O-O Bxc3 8. bxc3 d6 9. Rb1 Qe8 10. c5 d5
1939 Bad Elster – Round 7 – Roess, L. – 1/2-1/2 – Koch, Berthold – G18
1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. d3 Bb4 6. Nh3 O-O 7. O-O Bxc3 8. bxc3 d6 9. Rb1 h6 10. d4 e4
1941 Krakow/Warsaw – Round 10 – Carls, Carl – 0-1 – Bogoljubow, Efim – G10
1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 Nc6 5. d3 Bc5 6. e3 d6 7. Nge2 O-O 8. O-O a6 9. a3 Ba7 10. b4 Qe8
1946 Hastings4647 – Round 6 – Golombek, Harry – 1/2-1/2 – Tartakower, Savielly – G24
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Be7 6. Nf3 O-O 7. O-O d6 8. Nd5 Kh8 9. a3 Be6 10. Nxe7 Qxe7
1948 South Fallsburg ch-USA – Round 1 – Rubinow, Sol – 0-1 – Steiner, Heinrich Jun. – G1
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Be7 6. Nh3 O-O 7. O-O Qe8 8. f4 Bc5+ 9. Kh1 d6 10. Na4 e4
1949 US Open Omaha – Round 7 – Evans, Larry M – 1-0 – Kramer, George – G10
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bc5 6. a3 a5 7. e3 O-O 8. Nge2 Ba7 9. O-O Ne7 10. b4 c6
1950 Amsterdam – Round 1 – Pirc, Vasja – 0-1 – Tartakower, Savielly – G1
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Be7 6. Nf3 O-O 7. O-O d6 8. Rb1 a5 9. Nd5 Kh8 10. Ne1 Bd7
1951 Bad Pyrmont zt – Round 15 – Golombek, Harry – 1/2-1/2 – Bogoljubow, Efim – G12
1. c4 f5 2. Nc3 Nf6 3. g3 e5 4. Bg2 Nc6 5. d3 g6 6. Nh3 Bg7 7. O-O d6 8. f4 O-O 9. Bd2 Nd4 10. e3 Ne6
1952 POL-ch10 – Round 21 – Gawlikowski, Stanislaw – 1/2-1/2 – Wozniak, Kazimierz – G151
1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 Nc6 5. d3 Be7 6. e3 O-O 7. Nge2 d6 8. b3 Be6 9. d4 Bd7 10. O-O a6
1954 Hungary Ch – Round 1 – Barcza, Gedeon – 1-0 – Kluger, Gyula – G59
1. g3 e5 2. c4 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. d3 d6 6. f4 Be7 7. Nf3 O-O 8. O-O Qe8 9. e3 Kh8 10. b3 Be6
1954 URS-chTJ Coop – Round ? – Taimanov, Mark E – 1-0 – Aronin, Lev – G13
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 g6 6. Nf3 Bg7 7. O-O O-O 8. Rb1 a5 9. a3 Qe8 10. Bg5 d6
1955 CSR Ch – Round 10 – Zaruba, Antonin – 1-0 – Florian, Jaromir – G73
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. e3 O-O 7. Ne2 d5 8. cxd5 Nxd5 9. a3 Nxc3 10. bxc3 Be7
1956 URS Ch sf – Round ? – Tarasov, Vitaly – 1/2-1/2 – Chistiakov, Alexander – G3
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. a3 Bxc3+ 7. bxc3 d6 8. Rb1 O-O 9. Nh3 Qe8 10. f4 e4
1957 URS Ch, semi final – Round 7 – Goldberg, Grigory – 1-0 – Chistiakov, Alexander – G61
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. Bd2 O-O 7. Nf3 d6 8. O-O Bd7 9. Rc1 Bxc3 10. Bxc3 Qe7
1959 Hastings5960 – Round 7 – Bobotsov, Milko G – 1-0 – Pomar Salamanca, Arturo – G29
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Be7 6. e3 O-O 7. Nge2 d6 8. Nd5 Be6 9. Nec3 Qd7 10. Qa4 a6
1959 York ch-BCF – Round 1 – Edwards, Ray B – 0-1 – Fazekas, Stephan – G2
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bc5 6. Nf3 d6 7. O-O O-O 8. a3 a5 9. Rb1 Qe8 10. Nd5 Nxd5
1960 Aalborg – Round 10 – Enevoldsen, Jens – 1/2-1/2 – Haahr, Thorkild – G53
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 g6 6. e3 Bg7 7. Nge2 O-O 8. O-O Kh8 9. Rb1 a5 10. a3 d6
1960 Leipzig olm fin-A – Round 7 – Langeweg, Kick – 0-1 – Bisguier, Arthur B – G111
1. c4 Nc6 2. Nc3 e5 3. g3 f5 4. d3 Nf6 5. Bg2 Bb4 6. Bd2 O-O 7. e3 e4 8. dxe4 Ne5 9. exf5 d5 10. Nxd5 Bxd2+
1961 Buenos Aires ch-ARG – Round 10 – Bazan, Osvaldo – 0-1 – Reinhardt, Enrique – G59
1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 Nc6 5. d3 d6 6. e3 Be7 7. Nge2 O-O 8. a3 Qe8 9. b4 Be6 10. Nd5 Bd8
1961 Graz 1st – Round 1 – Rabar, Braslav – 1/2-1/2 – Dueckstein, Andreas – G1
1. c4 f5 2. Nc3 e5 3. g3 Nf6 4. Bg2 Nc6 5. d3 Bc5 6. e3 O-O 7. Nge2 d6 8. O-O Qe8 9. Nd5 Bb6 10. Nec3 Ne7
1961 Oberhausen etc – Round 8 – Petrosian, Tigran A. – 1-0 – Hort, Vlastimil – G192
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 g6 6. Rb1 Bg7 7. b4 d6 8. b5 Nd4 9. Nh3 O-O 10. O-O h6
1962 Mar del Plata – Round 1 – Byrne, David – 1/2-1/2 – Polugaevsky, Lev – G3
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 g6 6. e4 d6 7. Nge2 Bg7 8. O-O O-O 9. Nd5 Nxd5 10. cxd5 Ne7
1962 Varna olm – Round 1 – O'Kelly de Galway, Alberic – 1/2-1/2 – Kokkoris, Evangelos – G2
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 d6 6. a3 a5 7. Nf3 Be7 8. Bd2 O-O 9. O-O Qe8 10. Ne1 Qh5
1963 URS Team Ch Moscow RUS – Round 1 – Botvinnik, Mikhail – 1-0 – Shofman Shimoni, Ori – G2
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. Bd2 O-O 7. e3 Bxc3 8. Bxc3 f4 9. exf4 exf4 10. Nh3 Qe8+
1964 WchT U26 11. qual-F – Round 1.2 – Kagan, Shimon – 1-0 – Csom, Istvan – G3
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 d6 6. Rb1 a5 7. a3 g6 8. b4 axb4 9. axb4 Bg7 10. e3 O-O
1965 POL Ch 22th – Round 12 – Balcerowski, Witold – 0-1 – Sydor, Andrzej – G65
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. a3 Bxc3+ 7. bxc3 O-O 8. Nf3 Qe8 9. O-O d6 10. e3 e4
1965 WchT U26 12. prel – Round 5 – Rabassa, Luis – 0-1 – Savon, Vladimir A – G43
1. c4 f5 2. Nc3 Nf6 3. g3 e5 4. Bg2 Nc6 5. d3 g6 6. Nh3 Bg7 7. O-O O-O 8. f4 d6 9. Nd5 Kh8 10. Nf2 Be6
1968 Copenhagen ch-DEN – Round 1 – Andersen, Borge – 1-0 – From, Sigfred – G1
1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. d3 Bb4 6. Bd2 Bxc3 7. Bxc3 d6 8. b4 O-O 9. b5 Ne7 10. Nf3 Qe8
1969 Mar del Plata zt – Round 1 – Alfaro Quinteros, Arturo Elizur – 1-0 – Acosta Garcia, Rafael Isaac – G2
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 d6 6. e3 g6 7. Nge2 Bg7 8. Rb1 O-O 9. b4 a6 10. a4 Rb8
1969 New York ch-USA – Round 5 – Byrne, David – 1/2-1/2 – Lombardy, William J – G21
1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. d3 Be7 6. e3 O-O 7. Nge2 Qe8 8. O-O Kh8 9. Nd5 Bd8 10. Nec3 d6
1969 POL Ch 26th – Round 6 – Gasiorowski, Ryszard – 1/2-1/2 – Sydor, Andrzej – G21
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. e3 Bxc3+ 7. bxc3 O-O 8. Ne2 d6 9. O-O Qe8 10. f4 1/2-1/2
1969 Zagreb – Round 14 – Kovacevic, Veljko – 0-1 – Lombardy, William J – G94
1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 Nc6 5. d3 Be7 6. a3 O-O 7. Nh3 Qe8 8. Nd5 Bd8 9. O-O d6 10. f4 Kh8
20. European Teams 2015 – Round 2.4 – Vallejo Pons, Francisco – 1/2-1/2 – Nisipeanu, Liviu-Dieter – G84
1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. d3 Bb4 6. Bd2 O-O 7. Nf3 d6 8. O-O a5 9. a3 Bxc3 10. Bxc3 a4
43. Olympiad 2018 – Round 1.4 – Burgos Figueroa, Carlos E. – 1/2-1/2 – Sasikiran, Krishnan – G52
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. Bd2 O-O 7. a3 Bxc3 8. Bxc3 d6 9. d4 e4 10. e3 d5
Interpolis 1987 – Round 1 – Andersson, Ulf 1949 – 1/2-1/2 – Nikolic, Predrag – G1
1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. d3 g6 6. e4 d6 7. Nge2 Bg7 8. h3 O-O 9. Be3 Nh5 10. exf5 gxf5
Madrid 1973 – Round 5 – Karpov, Anatoly – 1/2-1/2 – Bellon Lopez, Juan Manuel – G10
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bc5 6. e3 f4 7. exf4 O-O 8. Nge2 d6 9. O-O Qe8 10. Na4 Bd4
Thessaloniki olm 1984 – Round 9 – Portisch, Lajos – 1/2-1/2 – Kurajica, Bojan – G53
1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. Nh3 Bxc3+ 7. bxc3 d6 8. Qb3 Qe7 9. O-O h6 10. f4 O-O

A25q — Closed (1935)
1.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6 5.d3
Les coups candidats
5…Bb4 — 50.6% (1617 parties)
Ambassadeurs : Kurajica, Bojan (10x), Lyell, Mark (8x), Sher, Miron (5x), Carlstedt, Jonathan (5x), Spraggett, Kevin (4x), Najer, Evgeniy (4x), Sarenac, David (4x), Glud, Jakob Vang (4x)
5…Bc5 — 22.8% (727 parties)
Ambassadeurs : Mitkov, Nikola (8x), Starr, Nava (4x), Pogosian, Vladimir (3x), Gruskovnjak, Tomislav (3x), Saidy, Anthony (2x), Varnusz, Egon (2x), Maric, Boris (2x), Papp, Nandor (2x)
5…g6 — 9.2% (293 parties)
Ambassadeurs : Uhlmann, Wolfgang (4x), Kafka, Graeme (4x), Savon, Vladimir (2x), Golombek, Harry (2x), Bogoljubow, Efim (2x), Aronin, Lev (2x), Landry-Vuorenpaa, Sirkka (2x), Neber, Akos (2x)
5…Be7 — 8.0% (256 parties)
Ambassadeurs : Kuehn, Manfred (3x), Lombardy, William J (2x), Moody, David W (2x), Kowarsch, Heinrich (2x), Anderson, David (1x), Littrell, W. (1x), Van Seters, Frits (1x), Mollekens, Jozef (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…Bb4 5…Bc5 5…g6 5…Be7
<1800 241 44% 29% 9% 9%
1800-2200 1655 49% 24% 9% 8%
2200-2600 951 59% 17% 10% 6%
2600+ 8 75% 12% 12%
Évolution par décennie (% des parties)
Décennie N parties 5…Bb4 5…Bc5 5…g6 5…Be7
1950s 14 29% 21% 21% 21%
1960s 40 32% 8% 15% 20%
1970s 63 32% 37% 14% 8%
1980s 105 41% 24% 11% 11%
1990s 457 38% 24% 13% 12%
2000s 939 47% 25% 9% 7%
2010s 1282 58% 21% 7% 7%
2020s 295 60% 18% 7% 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…Bb4 58% 60% ▲ +1.8%
5…Bc5 21% 18% ▼ -3.7%
5…g6 7% 7% ▼ -0.6%
5…Be7 7% 6% ▼ -0.8%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 4 parties
Fischer, Robert James — 1 partie
Botvinnik, Mikhail — 1 partie
Parties historiques
5…Bb4 — 50.6% (1617 parties)
1955 — Antonio Molina, Zayra Angelina vs Florian, Jaromir — 1-0 — Prague CZE
1956 — Endzelins, Lucius vs Purdy, Cecil J S — 0-1 — Australia
1956 — Tarasov, Vitaly vs Chistiakov, Alexander — 1/2-1/2 — Kharkov UKR
1957 — Goldberg, Grigory vs Chistiakov, Alexander — 1-0 — Kiev UKR
1960 — Langeweg, Kick vs Bisguier, Arthur B — 0-1 — Leipzig GER
5…Bc5 — 22.8% (727 parties)
1955 — De Rycke, Paul vs Boey, Josef — 1-0 — Belgium
1959 — Shekhtman Eduard vs Genin, Adeline — 0-1 — ?
1959 — Edwards, Ray B vs Fazekas, Stephan — 0-1 — York ch-BCF
1961 — Rabar, Braslav vs Dueckstein, Andreas — 1/2-1/2 — Graz AUT
1969 — Saidy, Anthony vs Fischer, Robert James — 1/2-1/2 — ?
5…g6 — 9.2% (293 parties)
1951 — Golombek, Harry vs Bogoljubow, Efim — 1/2-1/2 — Bad Pyrmont GER
1951 — Golombek, Harry vs Bogoljubow, Efim — 1/2-1/2 — Bad Pyrmont GER
1954 — Taimanov, Mark vs Aronin, Lev — 1-0 — Riga LAT
1960 — Enevoldsen, Jens vs Haahr, Thorkild — 1/2-1/2 — Aalborg DEN
1961 — Petrosian, Tigran V. vs Hort, Vlastimil — 1-0 — Oberhausen etc
5…Be7 — 8.0% (256 parties)
1950 — Pirc, Vasja vs Tartakower, Savielly — 0-1 — Amsterdam NED
1952 — Gawlikowski, Stanislaw vs Wozniak, Kazimierz — 1/2-1/2 — Katowice POL
1959 — Bobotsov, Milko G vs Pomar Salamanca, Arturo — 1-0 — Hastings ENG
1964 — Van Seters, Frits vs Mollekens, Jozef — 1/2-1/2 — Mechelen
1966 — Bonifacio, Marino vs Padoan, Antonio — 1/2-1/2 — Venice ITA

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