A30h — English: Symmetrical, Hedgehog System

1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur la paire de fous.

Côté adverse. Le fou enfermé en f8 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b1, le fou c1 et la tour a1).

Plans. Nc3 (Développer Nb1) ; d3 (Libérer Bc1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur la case forte e4, un fou actif en b7 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et g2.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le cavalier b8, le fou f8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...Nc6 (Développer Nb8) ; ...Be7 (Développer Bf8) ; ...Bg4 (Clouer Nf3) ; ...d6 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● b6→c5, a7→b6, d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Enfermé (mob. 2)
Bb7		● Bb7 Actif (mob. 6)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	3 (b1, c1, a1)	4 (b8, f8, a8, h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Au centre !
Droits de roque	—	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d2-d3, ● e2-e3	● …d7-d6, ● …d7-d5, ● …e6-e5

Partie
? 2000 – Round ? – Almanzar Peralta, Felix Javier – 0-1 – Shipov, Sergei – G126 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. b3 Be7 7. Bb2 d6 8. Nc3 Nbd7 9. d4 cxd4 10. Nxd4 Bxg2
1927 London Olympiad 1st – Round 14.51 – Euwe, Max – 1/2-1/2 – Maroczy, Geza – G155 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. d4 cxd4 7. Nxd4 Bxg2 8. Kxg2 Nc6 9. Nc3 Be7 10. e4 O-O
1929 Barcelona – Round 9 – Capablanca, Jose – 1-0 – Ayllon Soler, Pablo – G16 1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. g3 Bb7 5. Bg2 c5 6. O-O Nc6 7. d4 cxd4 8. Nxd4 Bc5 9. Ndb5 O-O 10. Bg5 Be7
1930 Nice – Round 8 – Kostic, Boris – 0-1 – Znosko-Borovsky, Eugene – G31 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. d3 Be7 7. Nc3 O-O 8. e4 d6 9. b3 Nbd7 10. Bb2 Qc7
1935 Warsaw ol Warsaw POL – Round ? – Ichim, Trajan – 0-1 – Lilienthal, Andor – G57 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 c5 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. cxd5 Nxd5 10. Nxd5 Bxd5
1936 New York ch-USA – Round 2 – Simonson, Albert – 1/2-1/2 – Reshevsky, Samuel – G4 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. Nc3 Qc8 7. b3 Be7 8. Ba3 d5 9. cxd5 Nxd5 10. Nxd5 Bxd5
1937 Stockholm ol – Round 13 – Keres, Paul – 1/2-1/2 – Lilienthal, Andor – G74 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 c5 5. O-O e6 6. Nc3 Qc8 7. b3 Be7 8. Bb2 O-O 9. Rc1 Rd8 10. d4 d5
1937 Stockholm ol – Round 4 – Zíta, František – 1-0 – Luckis, Marcos – G21 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. d4 cxd4 9. Nxd4 Bxg2 10. Kxg2 Nc6
1937 Tbilisi ch-URS – Round 1 – Kan, Ilya A – 0-1 – Makogonov, Vladimir – G151 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 c5 5. O-O e6 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. cxd5 Nxd5 10. Nxd5 Bxd5
1937 Tbilisi ch-URS – Round 1 – Levenfish, Grigory – 1/2-1/2 – Bondarevsky, Igor – G144 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. Ne5 Qc7 10. d4 dxc4
1938 Bad Oeynhausen – Round 13 – Eliskases, Erich – 1-0 – Koch, Berthold – G76 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 e6 5. O-O c5 6. d4 cxd4 7. Nxd4 Bxg2 8. Kxg2 Qc8 9. b3 Be7 10. Qd3 d5
1938 URS Ch, semi final – Round 1 – Mazel, Isaak Y – 0-1 – Romanovsky, Pjotr – G4 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. d4 cxd4 9. Bxd4 Nc6 10. Bb2 d5
1939 Leningrad ch-URS – Round 3 – Levenfish, Grigory – 0-1 – Makogonov, Vladimir – G19 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. Ne5 Qc7 10. Nb5 Qc8
1939 Leningrad/Moscow – Round 5 – Ragozin, Viacheslav – 1-0 – Bondarevsky, Igor – G40 1. Nf3 e6 2. c4 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. Ne5 Qc7 10. cxd5 Qxe5
1939 Leningrad/Moscow – Round 6 – Alatortsev, Vladimir N. – 1/2-1/2 – Makogonov, Vladimir – G47 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 c5 5. O-O e6 6. d4 cxd4 7. Nxd4 Bxg2 8. Kxg2 Qc8 9. b3 Be7 10. Bb2 Qb7+
1943 Vienna Ch – Round ? – Lokvenc, Josef – 1-0 – Schwammenhoefer, Karl – G10 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 c5 5. O-O e6 6. Nc3 Qc8 7. d4 cxd4 8. Qxd4 d5 9. cxd5 Nxd5 10. Nxd5 Bxd5
1946 Ostrawa ch CZE – Round 15 – Katetov, Miroslav – 1/2-1/2 – Opocensky, Karel – G24 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 c5 5. O-O e6 6. d4 cxd4 7. Nxd4 Bxg2 8. Kxg2 Be7 9. Nc3 O-O 10. e4 Nc6
1947 Essen – Round 5 – Lange, Wilfried – 1-0 – Saemisch, Friedrich – G8 1. Nf3 e6 2. g3 b6 3. Bg2 Bb7 4. c4 Nf6 5. O-O c5 6. b3 d5 7. cxd5 Bxd5 8. Bb2 Nbd7 9. d3 Be7 10. Nbd2 O-O
1947 Parnu – Round 1 – Kotov Lundqvist, Alex – 1/2-1/2 – Makogonov, Vladimir – G2 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. e3 d5 9. d4 Nbd7 10. Nbd2 Rc8
1948 Bad Gastein – Round 15 – Benko, Pal – 1/2-1/2 – Beni, Alfred – G114 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. d3 g6 7. e4 d6 8. Nc3 Bg7 9. Ne1 e5 10. f4 h6
1948 Karlovy Vary – Round 12 – Barcza, Gedeon – 1-0 – Rohacek, Ivan – G124 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 c5 6. d4 cxd4 7. Qxd4 Nc6 8. Qd1 Be7 9. Nc3 O-O 10. b3 Na5
1950 Schiavno Zdroj – Round 23 – Keres, Paul Petrovich – 1/2-1/2 – Bondarevsky, Igor – G133 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. d4 cxd4 9. Nxd4 Bxg2 10. Kxg2 d5
1951 YUG Ch 6th – Round 2 – Milic, Borislav – 0-1 – Puc, Stojan – G9 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 d5 7. cxd5 exd5 8. d4 g6 9. Bb2 Bg7 10. dxc5 bxc5
1952 Moskou ch-URS – Round 1 – Smyslov, Vladimir – 1-0 – Simagin, Vladimir – G8 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. d4 cxd4 9. Nbd2 d3 10. exd3 d5
1954 Olympiad prel IV – Round 1 – Darga, Klaus – 1-0 – Lemaire De Wit, Raphael – G32 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 c5 6. b3 Be7 7. Bb2 O-O 8. d4 cxd4 9. Nbd2 Na6 10. Nxd4 Bxg2
1954 Prague zt Prague CZE – Round 1 – Stahlberg, Gideon – 1/2-1/2 – Balanel, Ion – G7 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. Na3 Nc6 9. Nc2 d5 10. cxd5 Nxd5
1955 CSR Ch – Round 3 – Florian, Jaromir – 0-1 – Urbanec, Karel – G24 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. Na3 Nc6 9. Nc2 d5 10. cxd5 Nxd5
1955 DDR Ch 06th – Round 10 – Franz, Joachim – 1/2-1/2 – Dorawa, Bernhard – G49 1. Nf3 Nf6 2. g3 b6 3. c4 Bb7 4. Bg2 e6 5. O-O c5 6. d3 Be7 7. Nc3 O-O 8. e4 d6 9. Re1 Nc6 10. d4 cxd4
1955 Gothenburg Interzonal – Round 21 – Najdorf, Miguel – 1/2-1/2 – Acuna Medina, Angel G. – G195 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. d4 cxd4 9. Qxd4 Nc6 10. Qf4 d5
1955 URS Ch sf – Round 1 – Chistiakov, Alexander – 0-1 – Antoshin, Vladimir S – G74 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 c5 6. b3 Be7 7. Bb2 O-O 8. d3 d5 9. cxd5 Nxd5 10. Nbd2 Bf6
1955 URS Ch sf – Round 1 – Taimanov, Mark E – 1/2-1/2 – Kholmov, Ratmir D – G73 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. d4 cxd4 9. Nxd4 Bxg2 10. Kxg2 d5
1955 URS Ch sf Moscow RUS – Round 1 – Cherepkov, Alexander V – 0-1 – Lisitsin, Georgy – G29 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 c5 6. b3 Be7 7. Bb2 O-O 8. d4 d5 9. Ne5 Qc8 10. dxc5 Bxc5
1956 Moscow olm prel – Round 4 – Olafsson, Fridrik – 1/2-1/2 – Unzicker, Wolfgang – G110 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. d4 cxd4 9. Qxd4 Nc6 10. Qf4 d5
1956 New York Rosenwald5556 – Round 1 – Lombardy, William J – 0-1 – Bisguier, Arthur B – G1 1. c4 Nf6 2. Nf3 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. cxd5 Nxd5 10. d4 Nd7
1957 USA Ch Open 58th – Round 11 – Byrne, David – 1-0 – Byrne, Robert E – G80 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 Qc8 7. d3 Be7 8. e4 O-O 9. Bf4 d6 10. Rc1 Nc6
1958 Haifa/Tel Aviv – Round 2 – Reshevsky, Samuel – 1-0 – Persitz, Raaphi – G10 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. d3 Be7 7. e4 O-O 8. Nc3 Nc6 9. Ne1 Qc7 10. f4 Rad8
1959 Lodz ch POL – Round 6 – Drozd, Ryszard – 0-1 – Kostro, Jerzy – G31 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 c5 6. b3 Be7 7. e3 O-O 8. Bb2 d5 9. cxd5 Nxd5 10. d4 Nc6
1960 Balatonfured – Round 10 – Sofrevski, Jovan – 1/2-1/2 – Flohr, Salo – G26 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O c5 5. c4 e6 6. Nc3 Qc8 7. b3 d5 8. cxd5 Nxd5 9. Bb2 Nxc3 10. Bxc3 Nd7
1962 Asztalos Memorial 5th – Round 12 – Lengyel, Levente – 1/2-1/2 – Kholmov, Ratmir D – G93 1. Nf3 Nf6 2. g3 e6 3. Bg2 b6 4. c4 Bb7 5. O-O c5 6. d4 cxd4 7. Qxd4 Nc6 8. Qf4 Be7 9. Nc3 O-O 10. b3 Qb8
1962 Poznan ch POL – Round 8 – Brzozka, Stefan – 0-1 – Gromek, Jozef – G50 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 c5 6. d4 Qc8 7. Nc3 cxd4 8. Qxd4 Bc5 9. Qf4 O-O 10. Rd1 Nc6
1962 Varna olm – Round 5 – Clarke, Peter H – 1/2-1/2 – Palsson, Jon Gunnar – G206 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. Nc3 Nc6 7. b3 Be7 8. Bb2 d5 9. cxd5 exd5 10. d4 O-O
1963 Enschede zt – Round 17 – Lengyel, Laszlo – 1/2-1/2 – Philippe, Georges – G31 1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. d4 cxd4 7. Qxd4 Nc6 8. Qf4 Qb8 9. Nc3 Be7 10. Rd1 Qxf4
1963 Kiev Ch – Round 15 – Kurass, Iskir – 0-1 – Platonov, Igor V – G57 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. d3 d5 9. Nbd2 d4 10. b4 Qc7
1964 Sarajevo 07th – Round 7 – Trifunovic, Petar – 1/2-1/2 – Matulovic, Milan – G15 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Na6 7. b3 Be7 8. Bb2 O-O 9. d4 d5 10. cxd5 Nxd5
1966 Asztalos Memorial 9th – Round 15 – Bronstein, David I – 1-0 – Csom, Istvan – G81 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. e3 d5 9. Nc3 dxc4 10. bxc4 Nc6
1966 Sunderland ch-BCF – Round 9 – Clarke, Paul R H – 1/2-1/2 – Milner Barry, Philip – G77 1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. O-O Nc6 7. b3 Be7 8. Bb2 O-O 9. d4 Nxd4 10. Nxd4 Bxg2
1967 Moscow – Round 1 – Smyslov, Vladimir – 1/2-1/2 – Gipslis, Aivars – G135 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. b3 Be7 7. Bb2 O-O 8. e3 d5 9. Qe2 Nbd7 10. Rd1 Qc7
1967 Szczecin ch POL – Round 14 – Gromek, Jozef – 0-1 – Sliwa, Bogdan – G67 1. Nf3 Nf6 2. g3 c5 3. c4 b6 4. Bg2 Bb7 5. O-O e6 6. d4 cxd4 7. Nxd4 Bxg2 8. Kxg2 Be7 9. Nc3 Qc8 10. Qd3 Nc6
1967 URS Team Ch – Round 1 – Botvinnik, Mikhail – 0-1 – Dzindzichashvili, Roman – G1 1. c4 c5 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. e3 Nc6 10. cxd5 Nxd5
1968 Lugano ol (Men) qual-G – Round 1 – Johannsson, Ingi R – 1-0 – Tan, Lian Ann – G21 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. b3 d6 7. Bb2 Nbd7 8. Nc3 Be7 9. e3 O-O 10. Rc1 Qc8
1968 Toth Memorial – Round 15 – Barcza, Gedeon – 1/2-1/2 – Navarovszky, Laszlo – G59 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 c5 6. d4 cxd4 7. Qxd4 Nc6 8. Qf4 Qb8 9. Nc3 Be7 10. b3 O-O
1969 Olot – Round 1 – Toran Albero, Roman – 1/2-1/2 – Bellon Lopez, Juan Manuel – G11 1. Nf3 c5 2. c4 b6 3. g3 Bb7 4. Bg2 Nf6 5. O-O e6 6. b3 Be7 7. Bb2 O-O 8. e3 d5 9. Nc3 Nc6 10. d3 dxc4
Biel Interzonal 1993 – Round 2 – Ftacnik, Lubomir – 1/2-1/2 – Yudasin, Leonid – G57 1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. g3 Bb7 5. Bg2 c5 6. O-O d5 7. cxd5 Nxd5 8. Re1 Be7 9. e4 Nxc3 10. bxc3 O-O
FIDE World Cup 2017 – Round 1.4 – Antipov Olano, Maxim – 1/2-1/2 – Tomashevsky, Evgeny – G150 1. c4 Nf6 2. Nf3 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. e3 Be7 7. d4 cxd4 8. exd4 d5 9. Ne5 O-O 10. Re1 Na6
Mar del Plata 1982 – Round 1 – Andersson, Ulf 1949 – 1/2-1/2 – Polugaevsky, Lev – G1 1. c4 c5 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. cxd5 Nxd5 10. d4 Nxc3
Reggio Emilia9192 1992 – Round 5 – Beliavsky, Alexander G – 1-0 – Salov, Valery – G18 1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. g3 c5 5. Bg2 Bb7 6. O-O Nc6 7. e4 d6 8. d4 cxd4 9. Nxd4 Rc8 10. Nxc6 Bxc6
Reykjavik 1987 – Round 1 – Polugaevsky, Lev – 1/2-1/2 – Tal, Mikhail – G31 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. b3 Be7 7. Bb2 O-O 8. Nc3 d5 9. e3 Nbd7 10. Qe2 dxc4
World Blitz 2023 – Round 17.38 – Mitrabha, Guha – 1-0 – Iturrizaga Bonelli, Eduardo – G981 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 c5 5. O-O e6 6. b3 g6 7. Bb2 Bg7 8. d4 O-O 9. dxc5 bxc5 10. Nc3 Qe7
World Cup 1989 – Round ? – Salov, Valery – 0-1 – Seirawan, Yasser – G112 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. Nc3 Nc6 7. b3 Be7 8. Bb2 O-O 9. e3 a6 10. d3 Rc8
World Cup 1991 – Round 4 – Timman, Jan H – 0-1 – Seirawan, Yasser – G32 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Nc6 7. e3 Be7 8. b3 O-O 9. Bb2 Rc8 10. d4 cxd4

A30h — Symmetrical Hedgehog System

1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6

Eval: [+0.34]

Les coups candidats

6.Nc3 — 73.8% (7258 parties) →

Ambassadeurs : Andersson, Ulf (40x), Csom, Istvan (33x), Suba, Mihai (29x), Jurek, Josef (21x), Espig, Lutz (20x), Ornstein, Axel (19x), Browne, Walter Shawn (18x), Szmetan, Jorge (18x)

6.b3 — 17.0% (1673 parties)

Ambassadeurs : McNab, Colin A (13x), Csom, Istvan (6x), Panno, Oscar (6x), Gipslis, Aivars (6x), Panchenko, Alexander N (6x), Vukic, Milan (6x), Pribyl, Josef (6x), Dizdarevic, Emir (6x)

6.d4 — 5.7% (560 parties)

Ambassadeurs : Barcza, Gedeon (5x), Lechtynsky, Jiri (5x), Suba, Mihai (4x), Gromek, Jozef (3x), Giardelli, Sergio C. (3x), De Firmian, Nick (3x), Kholmov, Ratmir D (3x), Gutman, Lev (3x)

6.d3 — 2.3% (228 parties)

Ambassadeurs : McNab, Colin A (6x), Campanile, Antonio (3x), Tepasse, Wilhelm (2x), Solomons, Deon (2x), Lysyj, Igor (2x), Jary, Sergey (2x), Watson, Charles (1x), McIntosh, Leo (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.Nc3	6.b3	6.d4	6.d3
<1800	93	65%	18%	5%	8%
1800-2200	2531	70%	16%	7%	4%
2200-2600	6056	76%	18%	5%	1%
2600+	170	80%	10%	8%	1%

Évolution par décennie (% des parties)

Décennie	N parties	6.Nc3	6.b3	6.d4	6.d3
1920s	6	83%	—	17%	—
1930s	29	52%	28%	7%	10%
1940s	18	39%	28%	28%	6%
1950s	42	60%	31%	—	7%
1960s	53	58%	28%	13%	—
1970s	303	66%	25%	5%	2%
1980s	965	70%	21%	7%	1%
1990s	1577	73%	18%	5%	3%
2000s	2831	76%	15%	5%	3%
2010s	3373	75%	15%	6%	2%
2020s	642	73%	17%	7%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.Nc3	75%	73%	▼ -2.2%
6.b3	15%	17%	▲ +1.9%
6.d4	6%	7%	▲ +1.4%
6.d3	2%	1%	▼ -1.0%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 10 parties
Carlsen, Magnus — 8 parties
Hou, Yifan — 8 parties
Tal, Mikhail — 7 parties
Kramnik, Vladimir — 7 parties
Kasparov, Garry — 6 parties
Botvinnik, Mikhail — 4 parties
Gukesh D — 4 parties
Karpov, Anatoly — 3 parties
Karpov, Aleksandr — 3 parties
Anand, Viswanathan — 3 parties
Ju, Wenjun — 3 parties
Euwe, Max — 2 parties
Ding, Liren — 1 partie

Parties historiques

6.Nc3 — 73.8% (7258 parties)

1923 — Walter, Max vs Wolf Heinrich — 0-1 — Maehrisch Ostrau
1926 — Kostic, Boris vs Alimonda, B. — 1-0 — Meran ITA
1927 — Reti, Richard vs Saemisch, Friedrich — 1-0 — Bad Homburg GER
1927 — Nogues Acuna, Alejandro vs Louviau, Arsene — 1-0 — London ENG
1928 — Kostic, Boris vs Steiner, Endre — 1/2-1/2 — Trencianske Teplice SVK

6.b3 — 17.0% (1673 parties)

1935 — Ichim, Trajan vs Lilienthal, Andor — 0-1 — Warsaw ol Warsaw POL
1936 — Botvinnik, Mikhail vs Capablanca, Jose — 0-1 — Moscow RUS
1937 — Zíta, František vs Luckis, Marcos — 1-0 — Stockholm SWE
1937 — Levenfish, Grigory vs Bondarevsky, Igor — 1/2-1/2 — Tbilisi ch-URS
1937 — Kan, Ilya A vs Makogonov, Vladimir — 0-1 — Tbilisi ch-URS

6.d4 — 5.7% (560 parties)

1927 — Euwe, Max vs Maroczy, Geza — 1/2-1/2 — London ENG
1938 — Eliskases, Erich vs Koch, Berthold — 1-0 — Bad Oeynhausen GER
1939 — Alatortsev, Vladimir N. vs Makogonov, Vladimir — 1/2-1/2 — Leningrad RUS
1940 — Muhring, Willem Jan vs Goris, W — 1-0 — Rotterdam NED
1941 — Barcza, Gedeon vs Szekely, Stefan — 1-0 — Hungary ch-01 4142

6.d3 — 2.3% (228 parties)

1930 — Kostic, Boris vs Znosko-Borovsky, Eugene — 0-1 — Nice FRA
1931 — Watson, Charles vs McIntosh, Leo — 1-0 — Melbourne AUS
1937 — Arevalo Robinson, Alicia vs Bergman, Carl J — 0-1 — Pittsburgh
1948 — Benko, Pal vs Beni, Alfred — 1/2-1/2 — Bad Gastein
1952 — Lange, Werner vs Gislason, Sigurdur — 1-0 — Helsinki FIN

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