A29i — English: Four Knights, 4.g3 Bb4 5.Nd5

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Nd5 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : paire de fous.
Faiblesses adverses : Bc8 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 d4, Bb4 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, 3 pièces non développées (C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Bg4 — Clouer Nf3
● ...e4 — 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	—	● d4 (2v1)
Cases faibles	—	—
Centre	—	● d4 (2v1), ● e4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 2)
Bb4		● Bb4 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	● pawn d2	—
Non développées	4 (c1, f1, a1, h1)	3 (c8, 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, ● …e5-e4

Partie
19. European Teams 2013 – Round 3.8 – Grischuk, Alexander – 1/2-1/2 – Adams, Michael – G124 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 a6 9. d3 Ba7 10. Nxf6+ Qxf6
19. European Teams 2013 – Round 4.6 – Zhigalko, Andrey – 1-0 – Ipatov, Alexander – G156 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. d3 O-O 7. Bg2 Nxd5 8. cxd5 Nd4 9. Nd2 d6 10. e3 Nf5
1971 Hoogovens – Round 12 – Petrosian, Tigran L. – 1-0 – Ree, Hans – G8 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Nxd5 6. cxd5 e4 7. dxc6 exf3 8. Qb3 1-0
1972 San Antonio – Round 1 – Saidy, Anthony – 1-0 – Browne, Walter Shawn – G7 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 d6 7. Nxb4 Nxb4 8. a3 Nc6 9. d3 O-O 10. Bg2 Re8
1972 Skopje ol (Men) fin-A – Round 1 – Ghitescu, Theodor – 1-0 – Tringov, Georgi P – G49 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 Re8 8. O-O Bf8 9. d3 Nxd5 10. cxd5 exd3
1972 Skopje ol (Men) fin-A – Round 2 – Wirthensohn, Heinz – 1-0 – Kane, George Francis – G39 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 Bb4 5. Nd5 e4 6. Nh4 Bc5 7. Bg2 d6 8. d3 exd3 9. Qxd3 Ne5 10. Qc3 c6
2. Norway Chess 2014 – Round 8.1 – Agdestein, Simen – 0-1 – Topalov, Veselin – G28 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 O-O 7. O-O d6 8. e3 a6 9. b3 Ba7 10. Bb2 Nxd5
20. European Teams 2015 – Round 8.9 – Howell, David W L – 1-0 – Yilmaz, Mustafa – G360 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 O-O 7. O-O d6 8. d3 h6 9. e3 Bb6 10. Nxb6 axb6
22. ECU Club Cup 2006 – Round 3 – Bauer, Christian – 1-0 – Najer, Evgeniy – G42 1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 Re8 8. O-O Bc5 9. d3 exd3 10. Qxd3 Ne5
3. GRENKE Chess Classic 2015 – Round 2.2 – Carlsen, Magnus – 1-0 – Adams, Michael – G6 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. d3 Nxd5 9. cxd5 Nd4 10. Nxd4 exd4
36. Olympiad 2004 – Round 10 – Jobava, Baadur – 1-0 – Gyimesi, Zoltan – G333 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 O-O 7. O-O d6 8. d3 h6 9. e3 a6 10. a3 Ba7
40. Olympiad Open 2012 – Round 2.13 – Zhigalko, Andrey – 1/2-1/2 – Salgado Lopez, Ivan – G101 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 d6 7. Bg2 g5 8. Qa4 gxh4 9. Nxb4 Bd7 10. Nxc6 Bxc6
42. Olympiad 2016 – Round 8.9 – Van Kampen, Robin – 1-0 – Quesada Perez, Yuniesky – G595 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. d3 h6 7. Bg2 d6 8. O-O a6 9. Bd2 Ba7 10. Bc3 Be6
7. Sinquefield Cup 2019 – Round 11.3 – Caruana, Fabiano – 1/2-1/2 – Karjakin, Sergey – G63 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 Re8 9. b3 Bg4 10. h3 Bh5
83. Tata Steel Masters 2021 – Round 5.5 – Caruana, Fabiano – 1/2-1/2 – Esipenko, Andrey – G36 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 d6 7. Bg2 O-O 8. O-O g5 9. d4 h6 10. Ne3 gxh4
Amber Rapid 2006 – Round 3 – Svidler, Peter – 0-1 – Gelfand, Boris – G10 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 a6 9. d4 Ba7 10. Nc3 h6
Amber-blindfold 11th 2002 – Round 7 – Bareev, Evgeny – 1-0 – Kramnik, Vladimir – G18 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. d3 h6 7. Bg2 d6 8. Nd2 O-O 9. Nxf6+ Qxf6 10. Ne4 Qg6
Biel Interzonal 1993 – Round 12 – Hansen, Curt – 1/2-1/2 – Nikolic, Predrag – G257 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. d3 h6 7. Bg2 d6 8. O-O O-O 9. e3 Bg4 10. h3 Bh5
Biel Interzonal 1993 – Round 5 – Hansen, Curt – 1/2-1/2 – Epishin, Vladimir – G106 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 Bb6 9. d3 Nxd5 10. cxd5 Ne7
Candidats qf1 1977 – Round 5 – Korchnoi, Viktor – 1-0 – Petrosian, Tigran V. – G4 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. d3 h6 7. Bg2 d6 8. O-O O-O 9. e3 a5 10. Nc3 Ba7
Cap d'Agde 1994 – Round 6.2 – Lautier, Joel – 1-0 – Lutz, Christopher – G27 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 O-O 7. O-O d6 8. e3 Bb6 9. Nxb6 axb6 10. b3 Bf5
Corsica Masters Rapid 2001 – Round 4.2 – Chernin, Alexander – 1/2-1/2 – Anand, Viswanathan – G24 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 O-O 7. O-O d6 8. a3 Nxd5 9. cxd5 Nd4 10. Nxd4 Bxd4
Dortmund 1995 – Round 8 – Lautier, Joel – 1/2-1/2 – Ivanchuk, Vasyl – G36 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. d3 h6 7. Bg2 d6 8. e3 O-O 9. O-O a6 10. a3 Ba7
Erevan ch-URS 1975 – Round 1 – Petrosian, Tigran V. – 1-0 – Vaganian, Rafael A – G7 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bd6 6. Bg2 Nxd5 7. cxd5 Ne7 8. e4 c6 9. O-O cxd5 10. d4 dxe4
FIDE Candidates 2016 – Round 12.2 – Nakamura, Hikaru – 1-0 – Anand, Viswanathan – G46 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 d6 8. a3 Bc5 9. O-O Re8 10. e3 g5
FIDE World Cup 2019 – Round 2.1 – Dubov, Daniil – 1/2-1/2 – Firouzja, Alireza – G195 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 d6 7. Bg2 g5 8. Qa4 gxh4 9. Nxb4 Bd7 10. Nxc6 Bxc6
GCT Rapid YourNextMove 2017 – Round 3.4 – Giri, Anish – 1-0 – Aronian, Levon – G14 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 d6 8. b3 g5 9. Bb2 Nxd5 10. cxd5 Nb8
GRENKE Chess Classic 2019 – Round 5.1 – Carlsen, Magnus – 1/2-1/2 – Naiditsch, Arkadij – G21 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 a5 6. Bg2 O-O 7. O-O Re8 8. d3 Nxd5 9. cxd5 Nd4 10. Nxd4 exd4
Hoogovens 1979 – Round 6 – Timman, Jan H – 1-0 – Gaprindashvili, Nona – G13 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 a5 6. Bg2 d6 7. O-O Bc5 8. e3 O-O 9. d4 Ba7 10. Nc3 Bg4
Hoogovens 1979 – Round 9 – Dzindzichashvili, Roman – 0-1 – Timman, Jan H – G20 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O a6 8. d3 h6 9. a3 O-O 10. b4 Ba7
Hoogovens 1998 – Round 1 – Van Wely, Loek – 1/2-1/2 – Salov, Valery – G1 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. d3 h6 9. e3 a6 10. a3 Ba7
Hoogovens Blitz, Wijk aan Zee NED 1998 – Round 2 – Van Wely, Loek – 0-1 – Gelfand, Boris – G3 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. d3 h6 7. a3 a6 8. b4 Ba7 9. Bb2 d6 10. Bg2 O-O
Interpolis 1984 – Round 1 – Miles, Anthony J – 1-0 – Smyslov, Vassily – G6 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 Re8 9. d4 Bb6 10. b3 Nxd5
Interpolis 1984 – Round 1 – Miles, Anthony J – 1/2-1/2 – Huebner, Robert – G5 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Nxd5 6. cxd5 Nd4 7. Nxd4 exd4 8. Qc2 Qe7 9. Bg2 Ba5 10. Qc4 Bb6
Interpolis 1991 – Round 11 – Korchnoi, Viktor – 0-1 – Karpov, Anatoly – G33 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 O-O 7. d3 h6 8. a3 a5 9. Bd2 d6 10. b4 axb4
Linares 1994 – Round 1 – Lautier, Joel – 0-1 – Karpov, Anatoly – G1 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 Bg4 9. h3 Bh5 10. d3 a5
Madrid 1994 – Round 5 – Salov, Valery – 0-1 – Illescas Cordoba, Miguel – G20 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 O-O 7. O-O d6 8. e3 Bb6 9. Nxb6 axb6 10. b3 Bf5
Merano 1981 – Round 1 – Korchnoi, Viktor – 1/2-1/2 – Karpov, Anatoly – G1 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 Bg4 9. h3 Bxf3 10. Bxf3 Nxd5
Milaan m sf 1975 – Round 4 – Petrosian, Tigran V. – 1/2-1/2 – Karpov, Anatoly – G5 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Nxd5 6. cxd5 Nd4 7. Bg2 Nxf3+ 8. Bxf3 O-O 9. O-O d6 10. Bg2 Bc5
Montreal 1979 – Round 10 – Karpov, Anatoly – 1/2-1/2 – Huebner, Robert – G40 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. d3 h6 9. e3 a5 10. Nc3 Ne7
NAO Masters 2002 – Round 2 – Bareev, Evgeny – 1/2-1/2 – Gelfand, Boris – G6 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. d3 h6 8. Nd2 Nxd5 9. cxd5 Nd4 10. e3 Nf5
PCA Qualifiers 1993 – Round 11 – Kamsky, Gata – 1/2-1/2 – Adams, Michael – G173 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 Re8 8. O-O 1/2-1/2
PCA Qualifiers 1993 – Round 3 – Ehlvest, Jaan – 1/2-1/2 – Hansen, Curt – G39 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 Bb6 9. d4 Bg4 10. h3 Bxf3
Petropolis Interzonal 1973 – Round 4 – Gheorghiu, Florin – 1/2-1/2 – Portisch, Lajos – G14 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. d3 h6 7. Bg2 O-O 8. O-O d6 9. Bd2 Nxd5 10. cxd5 Ne7
RUS Ch Superfinal 2005 – Round 6 – Tomashevsky, Evgeny – 1/2-1/2 – Rublevsky, Sergei – G30 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 Re8 8. O-O Bc5 9. d3 exd3 10. Qxd3 Ne5
Saint Louis Rapid 2023 – Round 7.2 – Vachier-Lagrave, Maxime – 1/2-1/2 – Robson, Ray – G32 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. a3 Bc5 8. Bg2 d6 9. O-O Re8 10. d3 exd3
TCh-RUS 2005 – Round 9 – Bareev, Evgeny – 1/2-1/2 – Rublevsky, Sergei – G140 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 Re8 8. O-O Bc5 9. d3 exd3 10. Qxd3 Ne5
TCh-RUS 2008 – Round 4 – Tomashevsky, Evgeny – 1/2-1/2 – Rublevsky, Sergei – G94 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 Bc5 8. O-O Re8 9. e3 d6 10. f3 Nxd5
TCh-RUS 2008 – Round 6 – Lushenkov, Mikhail – 1/2-1/2 – Volkov, Sergey – G147 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 O-O 7. O-O d6 8. d3 Nxd5 9. cxd5 Ne7 10. d4 exd4
Tilburg 1991 – Round ? – Korchnoi, Viktor – 0-1 – Karpov, Anatoly – G14 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 O-O 7. d3 h6 8. a3 a5 9. Bd2 d6 10. b4 axb4
World Blitz 2009 – Round 25 – Grischuk, Alexander – 1-0 – Tkachiev, Vladislav – G251 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. d3 h6 8. O-O O-O 9. e3 a6 10. a3 Ba7
World Blitz 2015 – Round 13.9 – Tomashevsky, Evgeny – 1-0 – Kasimdzhanov, Rustam – G846 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Nxd5 6. cxd5 Nd4 7. Nxd4 exd4 8. Qc2 Be7 9. Qe4 O-O 10. Qxd4 Bf6
World Blitz 2018 – Round 7.1 – Carlsen, Magnus – 1-0 – Duda, Jan-Krzysztof – G392 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 Bb6 9. Nxb6 axb6 10. b3 Bf5
World Blitz 2019 – Round 18.10 – Tomashevsky, Evgeny – 1/2-1/2 – Aronian, Levon – G1190 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 d6 8. Nxb4 Nxb4 9. a3 Nc6 10. d3 d5
World Blitz 2022 – Round 16.12 – Sarana, Alexey – 1-0 – Sadhwani, Raunak – G835 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 Re8 8. O-O d6 9. b3 Bc5 10. Bb2 Bd4
World Championship 29th 1978 – Round 27 – Korchnoi, Viktor – 0-1 – Karpov, Anatoly – G19 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Nxd5 6. cxd5 Nd4 7. Nxd4 exd4 8. Qc2 Qe7 9. Bg2 Bc5 10. O-O O-O
World Rapid 2019 – Round 12.54 – Ivanisevic, Ivan – 1/2-1/2 – Sethuraman, S.P. – G797 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 d6 8. Nxb4 Nxb4 9. a3 Nc6 10. d3 exd3
World Rapid 2021 – Round 11.14 – Puranik, Abhimanyu – 0-1 – Vachier-Lagrave, Maxime – G626 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 O-O 7. Bg2 d6 8. a3 Bc5 9. O-O Re8 10. Rb1 Nxd5

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