A29a — English: Four Knights, 4.g3

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte b5, case forte d5, paire de fous.
Faiblesses adverses : Bc8 enfermé, Bf8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 4 pièces non développées (C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, menace e5, libère Bf1
● d3 — Libérer Bc1
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte b4, case forte d4, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bf1 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
● ...Bg4 — Clouer Nf3
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● d5 (2v1)	● b4 (2v0), ● d4 (2v1)
Cases faibles	—	—
Centre	● d5 (2v1)	● d4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 2)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	4 (c1, f1, 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	● …d7-d6, ● …d7-d5, ● …e5-e4

Partie
1972 Skopje ol (Men) fin-A – Round 1 – Uhlmann, Wolfgang – 1-0 – Rossetto, Hector – G13 1. c4 Nc6 2. Nc3 Nf6 3. Nf3 e5 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 d6 7. O-O Be7 8. Bg2 O-O 9. d3 c6 10. e4 Bg4
1972 Skopje ol (Men) fin-A – Round 13 – Gheorghiu, Florin – 1/2-1/2 – Portisch, Lajos – G83 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Be7 7. d4 d6 8. Bg2 O-O 9. O-O c6 10. b3 Bf5
1975 Milan – Round ? – Karpov, Anatoly – 1/2-1/2 – Smejkal, Jan – G2 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. O-O O-O 8. Qc2 Re8 9. d3 c6 10. Bg2 h6
20. Amber Blindfold 2011 – Round 1 – Aronian, Levon – 1-0 – Giri, Anish – G1 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. Na4 Be7 10. d4 exd4
20. European Teams 2015 – Round 1.6 – Aronian, Levon – 1-0 – Stefansson, Hannes – G42 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. Na4 Be7 8. d4 d6 9. O-O O-O 10. Nc3 c6
20. European Teams 2015 – Round 5.1 – Nepomniachtchi, Ian – 1/2-1/2 – Naiditsch, Arkadij – G192 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. Na4 Be7 8. Qb3 c6 9. O-O d5 10. cxd5 cxd5
22. ECU Club Cup 2006 – Round 4 – Huzman, Alexander – 1/2-1/2 – Svidler, Peter – G75 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. d3 O-O 8. O-O c6 9. Qb3 Be7 10. Rd1 d6
3. ACP World Rapid Cup 2009 – Round 4.2 – Svidler, Peter – 1/2-1/2 – Gelfand, Boris – G41 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. d3 h6 10. Rd1 c6
41. Olympiad Open 2014 – Round 11.2 – Eljanov, Pavel – 1/2-1/2 – Balogh Urbina, Carlos Alfonso – G774 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. Na4 Be7 8. d4 d6 9. Nc3 O-O 10. O-O Bh3
6. World Blitz 2010 – Round 13.4 – Grischuk, Alexander – 0-1 – Caruana, Fabiano – G89 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. O-O O-O 8. d3 c6 9. Bg2 h6 10. Bd2 Re8
6. World Blitz 2010 – Round 26.3 – Kramnik, Vladimir – 0-1 – Svidler, Peter – G185 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. O-O O-O 8. d3 c6 9. Bd2 Re8 10. Rc1 a6
7. World Team Championship 2010 – Round 7 – Tomashevsky, Evgeny – 1-0 – Sargissian, Gabriel – G103 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. O-O O-O 8. d3 c6 9. Bg2 Re8 10. Bd2 h6
75. Tata Steel GpA 2013 – Round 10.2 – Aronian, Levon – 1-0 – Wang, Hao(ZJWZ) – G49 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. d3 h6 8. O-O O-O 9. Bg2 c6 10. Bd2 Re8
78. Tata Steel GpA 2016 – Round 10.3 – So, Wesley – 1/2-1/2 – Tomashevsky, Evgeny – G66 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. Na4 Bd6 10. Rd1 Re8
Amber Rapidplay 2002 – Round 5 – Ljubojevic, Ljubomir – 1-0 – Van Wely, Loek – G20 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. d3 h6 9. Bd2 O-O 10. Rc1 Re8
Amber-blindfold 11th 2002 – Round 2 – Bareev, Evgeny – 1/2-1/2 – Van Wely, Loek – G3 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. d3 h6 10. Bd2 Re8
Amber-blindfold 19th 2010 – Round 10 – Aronian, Levon – 1-0 – Grischuk, Alexander – G27 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. Bg2 Re8 10. d3 h6
Amber-rapid 12th 2003 – Round 3 – Ljubojevic, Ljubomir – 1/2-1/2 – Van Wely, Loek – G7 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. d3 h6 10. Bd2 Re8
American Cup Champ 2022 – Round 4.2 – Caruana, Fabiano – 1-0 – Aronian, Levon – G25 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. d3 O-O 8. O-O a5 9. Bg2 c6 10. Bd2 d6
ch-Wereld Teams 1989 – Round 1 – Adorjan, Andras – 1/2-1/2 – Nikolic, Predrag – G2 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. Na4 Be7 9. O-O 1/2-1/2
Corus A 2008 – Round 9 – Aronian, Levon – 1/2-1/2 – Eljanov, Pavel – G56 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. d3 O-O 9. O-O h6 10. Na4 Be7
Dos Hermanas 1999 – Round 8 – Gelfand, Boris – 0-1 – Svidler, Peter – G35 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. d3 h6 10. Bd2 Re8
FIDE WCh KO 2000 – Round 2.1 – Gulko, Boris – 1/2-1/2 – Chernin, Alexander – G51 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. d4 e4 8. Bg2 Bxc3+ 9. bxc3 h6 10. Qc2 Qe7
FIDE WCh KO 2000 – Round 2.1 – Ivanchuk, Vasyl – 1/2-1/2 – Ehlvest, Jaan – G1 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Qe7 8. a3 Ba5 9. Qc2 c6 10. b4 Bb6
FIDE World Cup 2015 – Round 3.2 – Sethuraman, S.P. – 1/2-1/2 – Mamedyarov, Shakhriyar – G332 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. Na4 Bd6 10. Rd1 Re8
FTX Crypto Cup 2022 – Round 4.1 – Giri, Anish – 1-0 – Niemann, Hans Moke – G51 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. O-O O-O 8. Na4 d6 9. d3 a5 10. Nxc5 dxc5
Hoogovens 1999 – Round 10 – Ivanchuk, Vasyl – 1/2-1/2 – Svidler, Peter – G56 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Na4 c6 8. O-O O-O 9. d4 e4 10. Bg2 d5
Hoogovens 1999 – Round 5 – Kasimdzhanov, Rustam – 0-1 – Timman, Jan H – G27 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. O-O O-O 8. Qc2 c6 9. d3 h6 10. a3 Be7
Hoogovens Blitz 1998 – Round 9 – Gelfand, Boris – 1-0 – Timman, Jan H – G11 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. Na4 Be7 10. Rd1 d6
Interpolis 1980 – Round 1 – Timman, Jan H – 1/2-1/2 – Tal, Mikhail – G4 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qc2 c6 8. O-O O-O 9. d3 Re8 10. Bg5 h6
Interpolis 1991 – Round 6 – Korchnoi, Viktor – 1/2-1/2 – Bareev, Evgeny – G18 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. d4 e4 8. Bg2 Bxc3+ 9. bxc3 h6 10. Qc2 O-O
Interpolis 1993 – Round 3 – Karpov, Anatoly – 1/2-1/2 – Vyzmanavin, Alexey – G112 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qc2 O-O 8. O-O Re8 9. d3 h6 10. Bd2 c6
Madrid 1993 – Round 4 – Lautier, Joel – 0-1 – Salov, Valery – G18 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. O-O O-O 8. Bg2 Re8 9. d3 c6 10. Qb3 Bc5
Milaan 1975 – Round 2 – Karpov, Anatoly – 1/2-1/2 – Smejkal, Jan – G5 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. O-O O-O 8. Qc2 Re8 9. d3 c6 10. Bg2 h6
Milaan 1975 – Round 5 – Smejkal, Jan – 1/2-1/2 – Portisch, Lajos – G17 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. d3 O-O 8. O-O h6 9. Bg2 c6 10. Bd2 d6
Milano 1975 – Round ? – Karpov, Anatoly – 1/2-1/2 – Smejkal, Jan – G2 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. O-O O-O 8. Qc2 Re8 9. d3 c6 10. Bg2 h6
OHRA 1984 – Round 6 – Timman, Jan H – 1-0 – Campora, Daniel H. – G10 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Ba5 8. O-O O-O 9. d3 d6 10. Qa3 c6
Petropolis Interzonal 1973 – Round 3 – Bronstein, David Ionovich – 1/2-1/2 – Polugaevsky, Lev – G10 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 a5 8. O-O O-O 9. d3 h6 10. Be3 Bxc3
RUS Ch Superfinal 2005 – Round 3 – Tomashevsky, Evgeny – 0-1 – Svidler, Peter – G13 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. d3 c6 9. O-O O-O 10. Bg5 Be7
RUS Ch Superfinal 2005 – Round 4 – Bareev, Evgeny – 1-0 – Volkov, Sergey – G18 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. O-O O-O 8. e3 d6 9. d4 Bb4 10. Nd5 Nxd5
Saint Louis Blitz 2024 - Round 1 - Nepomniachtchi Ian - 1/2-1/2 - So Wesley - G3 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. Na4 Be7 8. d4 Bb4+ 9. Kf1 e4 10. Bg2 d5
Skopje ol (Men) fin-A 1972 – Round 13 – Gheorghiu, Florin – 1/2-1/2 – Portisch, Lajos – G41 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Be7 7. d4 d6 8. Bg2 O-O 9. O-O c6 10. b3 Bf5
Sparkassen 2006 – Round 3 – Jobava, Baadur – 1/2-1/2 – Aronian, Levon – G6 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. d4 Bxc3+ 8. bxc3 e4 9. Bg2 h6 10. Qc2 O-O
SportAccord Rapid Men 2013 – Round 1.1 – Aronian, Levon – 0-1 – Wang, Hao(ZJWZ) – G1 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. e3 O-O 8. O-O Be7 9. b3 c6 10. d4 d6
Tal Memorial 2010 – Round 4 – Wang, Hao(ZJWZ) – 1/2-1/2 – Eljanov, Pavel – G13 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O O-O 9. Na4 Be7 10. d4 d6
Tata Steel India Blitz 2019 – Round 18.1 – Aronian, Levon – 1/2-1/2 – Nepomniachtchi, Ian – G85 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Ng1 Nc6 6. Nf3 Nd4 7. Ng1 1/2-1/2
World Blitz 2007 – Round 3 – Savchenko, Boris – 0-1 – Carlsen, Magnus – G21 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. Qb5 Qe7 9. d3 c6 10. Qa4 O-O
World Blitz 2009 – Round 40 – Gelfand, Boris – 1/2-1/2 – Svidler, Peter – G414 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. O-O c6 9. d3 O-O 10. Bg5 Be7
World Blitz 2015 – Round 17.69 – Teske, Henrik – 1/2-1/2 – Stefansson, Hannes – G1087 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bc5 7. O-O O-O 8. e3 Bb4 9. Nd5 Nxd5 10. cxd5 d6
World Blitz 2019 – Round 6.27 – Dubov, Daniil – 1-0 – Esipenko, Andrey – G400 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 a5 8. O-O O-O 9. d3 Bc5 10. Bg2 h6
World Rapid 2019 – Round 10.19 – Ivanisevic, Ivan – 0-1 – Grischuk, Alexander – G629 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 Bc5 8. d3 h6 9. g4 d6 10. Rg1 c6
XXVII SuperGM 2010 – Round 7 – Gelfand, Boris – 1/2-1/2 – Grischuk, Alexander – G18 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. O-O O-O 8. Bg2 Re8 9. d3 h6 10. Bd2 c6

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