A30i — English: Symmetrical, Hedgehog, 6…a6

1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 a6 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : paire de fous.
Faiblesses adverses : arriéré d7, Bf8 enfermé, roi noir au centre.
Problèmes : Bc1 enfermé, Bg2 enfermé.
Plans :
● d3 — Libérer Bc1
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte e4, case forte c5, Bb7 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bg2 enfermé.
Problèmes : roi au centre, Bf8 enfermé, arriéré d7, 4 pièces non développées (B8, F8, A8, 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	—	● d7
Chaînes	● f2→g3, h2→g3	● b6→c5, d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● e4 (2v1), ● c5 (2v0)
Cases faibles	—	—
Centre	● e5 (1v0)	● d5 (3v2), ● e4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Enfermé (mob. 2)
Bb7		● Bb7 Actif (mob. 5)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	2 (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
20. European Teams 2015 – Round 9.12 – Laznicka, Viktor – 1/2-1/2 – Perunovic, Milos – G375 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 Be7 8. d4 cxd4 9. Nxd4 Bxg2 10. Kxg2 Qc7
41. Olympiad Open 2014 – Round 10.7 – Grischuk, Alexander – 1/2-1/2 – Perunovic, Milos – G732 1. c4 c5 2. Nc3 Nf6 3. g3 e6 4. Nf3 b6 5. Bg2 Bb7 6. O-O a6 7. d4 cxd4 8. Qxd4 d6 9. Bg5 Nbd7 10. Qd2 Rc8
43. Olympiad 2018 – Round 1.7 – Kojima, Shinya – 1/2-1/2 – Sargissian, Gabriel – G70 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. d4 cxd4 8. Qxd4 d6 9. Bg5 Nbd7 10. Rfd1 Be7
Amber-rapid 13th 2004 – Round 3 – Gelfand, Boris – 0-1 – Ivanchuk, Vasyl – G9 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 d6 8. Bb2 Be7 9. e3 O-O 10. Qe2 Nbd7
Amber-rapid 20th 2011 – Round 7 – Kramnik, Vladimir – 0-1 – Carlsen, Magnus – G21 1. Nf3 Nf6 2. c4 b6 3. g3 c5 4. Bg2 Bb7 5. O-O e6 6. Nc3 a6 7. b3 Be7 8. Bb2 O-O 9. e3 d6 10. d4 Ne4
Bugojno 1978 – Round 14 – Huebner, Robert – 1-0 – Ljubojevic, Ljubomir – G81 1. Nf3 c5 2. c4 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 a6 7. d4 cxd4 8. Qxd4 d6 9. b3 Nbd7 10. Bb2 Be7
Erevan ch-URS 1975 – Round 1 – Petrosian, Tigran V. – 1/2-1/2 – Balashov, Yuri S – G14 1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. Re1 d6 8. e4 Nbd7 9. b3 Be7 10. d4 cxd4
Erevan ch-URS 1975 – Round 1 – Tal, Mikhail – 1/2-1/2 – Balashov, Yuri S – G10 1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. Re1 d6 8. d4 cxd4 9. Nxd4 Bxg2 10. Kxg2 Be7
IBM 1978 – Round 6 – Nikolac, Juraj – 1-0 – Ljubojevic, Ljubomir – G17 1. Nf3 c5 2. c4 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 a6 7. b3 d6 8. Bb2 Nbd7 9. e3 Rb8 10. Qe2 Be7
Interpolis 1984 – Round 1 – Miles, Anthony J – 1/2-1/2 – Tukmakov, Vladimir B – G8 1. c4 Nf6 2. Nc3 c5 3. g3 e6 4. Nf3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 d6 8. Bb2 Be7 9. d4 cxd4 10. Nxd4 Bxg2
Interpolis 1987 – Round ? – Korchnoi, Viktor – 1/2-1/2 – Sokolov, Andrei – G32 1. c4 Nf6 2. Nf3 e6 3. Nc3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 Qc7 8. e3 Be7 9. d4 cxd4 10. exd4 d5
Interpolis 1987 – Round 1 – Andersson, Ulf 1949 – 1/2-1/2 – Sokolov, Andrei – G27 1. Nf3 c5 2. c4 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 a6 7. b3 Qc7 8. Bb2 Be7 9. e3 O-O 10. Qe2 Rd8
Interpolis 1989 – Round 2 – Korchnoi, Viktor – 1/2-1/2 – Ivanchuk, Vasyl – G7 1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 d6 8. Bb2 Be7 9. d4 cxd4 10. Nxd4 Bxg2
Linares 1985 – Round 1 – Miles, Anthony J – 1/2-1/2 – Polugaevsky, Lev – G6 1. c4 e6 2. Nc3 c5 3. Nf3 Nf6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 Be7 8. Bb2 O-O 9. d4 cxd4 10. Nxd4 Bxg2
Manila Manila PHI 1975 – Round 3 – Mecking, Henrique – 1/2-1/2 – Ljubojevic, Ljubomir – G4 1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 d6 8. Bb2 Be7 9. d4 cxd4 10. Nxd4 Bxg2
Milaan 1975 – Round 6 – Portisch, Lajos – 0-1 – Andersson, Ulf 1949 – G22 1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. O-O a6 7. d4 cxd4 8. Qxd4 d6 9. b3 Nbd7 10. e4 Be7
Milaan m sf 1975 – Round 3 – Portisch, Lajos – 1-0 – Ljubojevic, Ljubomir – G4 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. Re1 d6 8. e4 Nbd7 9. d3 Be7 10. h3 O-O
Moscow 1975 – Round 1 – Korchnoi, Viktor – 1-0 – Garcia Martinez, Silvino – G53 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 d6 8. d4 cxd4 9. Qxd4 Nbd7 10. Bb2 Be7
Moscow Interzonal 1982 – Round 3 – Andersson, Ulf 1949 – 1-0 – Gheorghiu, Florin – G10 1. c4 c5 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 a6 7. b3 Be7 8. d4 cxd4 9. Qxd4 d6 10. Ba3 Nc6
World Blitz Final 2012 – Round 12 – Radjabov, Teimour – 0-1 – Carlsen, Magnus – G93 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. Re1 d6 8. e4 Be7 9. d4 cxd4 10. Nxd4 Qc7
World Cup 1988 – Round 1 – Andersson, Ulf 1949 – 0-1 – Hjartarson, Johann – G71 1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 c5 5. O-O e6 6. Nc3 a6 7. b3 d6 8. Bb2 Be7 9. e3 O-O 10. Qe2 Nbd7
World Cup 1988 – Round 1 – Korchnoi, Viktor – 0-1 – Hjartarson, Johann – G98 1. Nf3 Nf6 2. c4 b6 3. g3 c5 4. Bg2 Bb7 5. O-O e6 6. Nc3 a6 7. b3 d6 8. d4 cxd4 9. Nxd4 Qc7 10. Bxb7 Qxb7
World Cup 1989 – Round 1 – Karpov, Anatoly – 1-0 – Hjartarson, Johann – G87 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 d6 8. Bb2 Be7 9. d4 cxd4 10. Nxd4 Bxg2
World Cup 1991 – Round 15 – Andersson, Ulf 1949 – 1/2-1/2 – Hjartarson, Johann – G112 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. b3 d6 8. Bb2 Be7 9. e3 O-O 10. Qe2 Nbd7
Zuerich Champions rap 2009 – Round 3 – Karpov, Anatoly – 1/2-1/2 – Topalov, Veselin – G8 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O a6 7. d4 cxd4 8. Nxd4 Bxg2 9. Kxg2 Qc8 10. Qd3 Nc6

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