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)	—
Cases faibles	—	—
Centre	● d5 (2v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Ok (mob. 2)
Bb4		● Bb4 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	2 (● c1, ● a1)	2 (● c8, ● a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● d2-d3	● …d7-d5, ● …e4-e3

A29p — English: Four Knights, Main Line 6.O-O e4

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Bg2 O-O 6.O-O e4 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Jeu au centre (rupture d2-d3).

Atouts. Les Blancs s'appuient sur un contrôle dominant de b5 et d5.

Côté adverse. Un mauvais fou en c8.

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

Plans. Ne1 (51 % des parties) ; Ng5 (49 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Jeu au centre (rupture d7-d5).

Atouts. Les Noirs s'appuient sur un fou actif en b4.

Côté adverse. Un mauvais fou en c1.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...Bxc3 (Fou actif (mobilité 6) — 95 % des parties) ; ...Re8 (5 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1962 Mar del Plata – Round 9 – Eliskases, Erich – 1/2-1/2 – Smyslov, Vladimir – G78 1. c4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. dxc3 Re8 9. Nh3 Ne5 10. b3 d6
1966 Rubinstein Memorial 04th – Round 14 – Ujtelky, Maximilian – 1/2-1/2 – Smyslov, Vladimir – G79 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. Nf3 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. Qc2 Qe7 10. d3 exd3
1966 Rubinstein Memorial 04th – Round 8 – Sliwa, Bogdan – 0-1 – Smyslov, Vladimir – G41 1. c4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 d5
1966 Zinnowitz Zinnowitz GER – Round 7 – Nei, Iivo – 0-1 – Fuchs, Reinhart – G22 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. dxc3 Re8 9. Nh3 d6 10. Nf4 Bf5
1967 Skopje – Round 5 – Sofrevski, Jovan – 1/2-1/2 – Matulovic, Milan – G40 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 Qe7
1968 Warszawa olm qual m – Round 4 – Schmidt, Wlodzimierz – 1-0 – Lewi, Jerzy – G7 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ne1 Bxc3 8. dxc3 Re8 9. Nc2 d6 10. Ne3 Ne5
1972 Skopje ol (Men) fin-A – Round 15 – Sloth, Jorn – 0-1 – Wirthensohn, Heinz – G50 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. d3 exd3 10. exd3 d6
1974 Manila – Round 1 – Giardelli, Sergio C. – 0-1 – Winston, Peter J – G7 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 Qe7
1974 Manila – Round 2 – Naranja, Renato – 0-1 – Cardoso, Radolfo Tan – G4 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. d3 exd3 10. exd3 h6
1975 URS Team Ch – Round 3 – Zhemajitis, G. – 0-1 – Vooremaa, Andres – G20 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. dxc3 Re8 9. b3 h6 10. Nh3 d6
3. GRENKE Chess Classic 2015 – Round 6.1 – Aronian, Levon – 1/2-1/2 – Adams, Michael – G21 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 d5
3. Norway Chess 2015 – Round 7.4 – Aronian, Levon – 1/2-1/2 – Anand, Viswanathan – G34 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 Qe7
3. Sinquefield Cup 2015 – Round 8.1 – Aronian, Levon – 1/2-1/2 – Anand, Viswanathan – G35 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 d5
43. Olympiad 2018 – Round 8.1 – Nakamura, Hikaru – 1/2-1/2 – Naiditsch, Arkadij – G494 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 e3 10. d3 d5
5. Sinquefield Cup 2017 – Round 7.3 – Nakamura, Hikaru – 0-1 – Aronian, Levon – G33 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 e3 10. d3 d5
6. Norway Chess 2018 – Round 8.4 – Nakamura, Hikaru – 1-0 – Karjakin, Sergey – G35 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 d5
Biel Interzonal 1976 – Round 2 – Petrosian, Tigran V – 1/2-1/2 – Rogoff, Kenneth – G8 1. c4 Nf6 2. Nc3 e5 3. g3 Bb4 4. Nf3 Nc6 5. Bg2 O-O 6. O-O e4 7. Ne1 Bxc3 8. dxc3 h6 9. Nc2 d6 10. Ne3 Re8
FIDE Candidates 2016 – Round 10.3 – Caruana, Fabiano – 1-0 – Anand, Viswanathan – G39 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 d5
FIDE Candidates 2016 – Round 8.1 – Svidler, Peter – 1/2-1/2 – Karjakin, Sergey – G29 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 e3 10. d3 d5
FIDE World Cup 2015 – Round 1.2 – Granda Zuniga, Julio E – 1-0 – Fier, Alexandr – G69 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 Qe7
FIDE World Cup 2015 – Round 6.2 – Karjakin, Sergey – 1/2-1/2 – Eljanov, Pavel – G416 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 Qe7
FIDE World Cup 2019 – Round 1.1 – Anwuli, Daniel – 0-1 – Vachier-Lagrave, Maxime – G8 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 d5
GCT Rapid YourNextMove 2017 – Round 5.3 – Nepomniachtchi, Ian – 1-0 – Aronian, Levon – G23 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ne1 Bxc3 8. bxc3 Re8 9. f3 d5 10. cxd5 Qxd5
GRENKE Chess Classic 2018 – Round 7.3 – Vachier-Lagrave, Maxime – 0-1 – Caruana, Fabiano – G33 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. Qc2 d5 10. cxd5 Qxd5
Interpolis 1983 – Round 1 – Portisch, Lajos – 1-0 – Huebner, Robert – G5 1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Nf3 Nc6 5. Bg2 O-O 6. O-O e4 7. Ne1 Re8 8. Nd5 h6 9. d3 Bxe1 10. Rxe1 Ne5
It 2001 – Round 5 – Kasparov, Garry – 1/2-1/2 – Sadvakasov, Darmen – G9 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 e3 10. dxe3 Qe7
Lindores Abbey Tal Memorial 2021 – Round 3.2 – Caruana, Fabiano – 1-0 – Vokhidov, Shamsiddin – G130 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ne1 Bxc3 8. bxc3 Re8 9. Nc2 d5 10. cxd5 Qxd5
Manila Interzonal 1976 – Round 9 – Gheorghiu, Florin – 1/2-1/2 – Mecking, Henrique – G37 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ne1 Bxc3 8. dxc3 Re8 9. Nc2 d6 10. b3 h6
Manila Interzonal 1990 – Round 13 – Georgiev, Kaloyan – 1/2-1/2 – Hjartarson, Johann – G209 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ne1 Bxc3 8. dxc3 h6 9. Nc2 d6 10. Ne3 Re8
Novgorod 1997 – Round 8 – Topalov, Veselin – 0-1 – Gelfand, Boris – G19 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 e3 10. dxe3 b6
Palma De Mallorca GP 2017 – Round 5.9 – Gelfand, Boris – 1/2-1/2 – Hammer, Jon Ludvig – G45 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 e3 10. d3 d5
Petropolis Interzonal 1973 – Round 2 – Polugaevsky, Lev – 1/2-1/2 – Savon, Vladimir Andreevichndreevich – G5 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ne1 Bxc3 8. dxc3 h6 9. Nc2 Re8 10. Ne3 d6
Petropolis Interzonal 1973 – Round 2 – Smyslov, Vassily – 1/2-1/2 – Portisch, Lajos – G4 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. dxc3 Re8 9. f3 d6 10. b3 Bd7
Tbilisi 1976 – Round 1 – Petrosian, Tigran V – 1/2-1/2 – Korchnoi, Viktor – G3 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ne1 Bxc3 8. dxc3 Re8 9. Bg5 h6 10. Bxf6 Qxf6
World Blitz 2015 – Round 11.17 – Tomashevsky, Evgeny – 1-0 – Gajewski, Grzegorz – G665 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 d5
World Championship 29th 1978 – Round 6 – Karpov, Anatoly – 1/2-1/2 – Korchnoi, Viktor – G3 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ne1 Bxc3 8. dxc3 h6 9. Nc2 Re8 10. Ne3 d6
World Championship 34th-KK4 1987 – Round 2 – Kasparov, Garry – 0-1 – Karpov, Anatoly – G1 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 e3 10. d3 d5
World Championship 34th-KK4 1987 – Round 4 – Kasparov, Garry – 1-0 – Karpov, Anatoly – G2 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 Qe7

A29p — Four Knights, Main Line 6.O-O e4 (1962)

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Bg2 O-O 6.O-O e4

Les coups candidats

7.Ng5 — 70.7% (2285 parties)

Ambassadeurs : Zielinski, Sergej (49x), Tsenkov, Ljubomir (16x), Vetter, Udo (11x), Morley, Paul (11x), Naumkin, Igor (10x), Smyslov, Vasily (9x), Brooks, Ian S Dr (9x), Chorfi, Khaled (8x)

7.Ne1 — 28.5% (923 parties)

Ambassadeurs : Belchev, Branimir Petrov (15x), Uhlmann, Wolfgang (13x), Bakheet Farag (12x), Beck, Georges (11x), Keskisarja, Teemu (6x), Sznapik, Aleksander (5x), Kestler, Hans-Guenther (5x), Makarichev, Sergey (5x)

7.Nh4 — 0.8% (25 parties)

Ambassadeurs : Neale, Mark (2x), Madaminov, Mukhiddin (2x), Ubilava, Elizbar (1x), Douven, Rudy (1x), Pool Theo (1x), Gaillard, Olivier (1x), Wenner, Frank (1x), Buerger, Carsten (1x)

7.Nd4 — 0.0% (1 parties)

Ambassadeurs : Riha, Josef (1x), Boehme, Sebastian (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.Ng5	7.Ne1	7.Nh4	7.Nd4
<1800	200	71%	28%	0%	0%
1800-2200	1121	71%	28%	1%	—
2200-2600	1099	70%	29%	1%	—
2600+	56	70%	27%	4%	—

Évolution par décennie (% des parties)

Décennie	N parties	7.Ng5	7.Ne1	7.Nh4	7.Nd4
1960s	7	71%	29%	—	—
1970s	151	50%	50%	—	—
1980s	240	47%	53%	0%	—
1990s	558	70%	29%	0%	—
2000s	971	72%	28%	0%	0%
2010s	1016	78%	21%	1%	—
2020s	291	70%	26%	4%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.Ng5	78%	70%	▼ -8.0%
7.Ne1	21%	26%	▲ +4.9%
7.Nh4	1%	4%	▲ +3.1%
7.Nd4	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Kasparov, Garry — 7 parties
Karpov, Anatoly — 5 parties
Anand, Viswanathan — 4 parties
Smyslov, Vladimir — 2 parties
Tal, Mikhail — 1 partie
Ding, Liren — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

7.Ng5 — 70.7% (2285 parties)

1962 — Eliskases, Erich vs Smyslov, Vasily — 1/2-1/2 — Mar del Plata ARG
1966 — Sliwa, Bogdan vs Smyslov, Vasily — 0-1 — Polanica Zdroj POL
1966 — Ujtelky, Maximilián Samuel Rudolf vs Smyslov, Vasily — 1/2-1/2 — Polanica Zdroj POL
1966 — Nei, Iivo vs Fuchs, Reinhart — 0-1 — Zinnowitz Zinnowitz GER
1967 — Sofrevski, Jovan vs Matulovic, Milan — 1/2-1/2 — Skopje MKD

7.Ne1 — 28.5% (923 parties)

1968 — Schmidt, Wlodzimierz vs Lewi, Jerzy — 1-0 — Warszawa olm qual m
1969 — Schmidt, Wlodzimierz vs Levy, David N L — 0-1 — Lublin POL
1973 — Polugaevsky, Lev vs Savon, Vladimir — 1/2-1/2 — Petropolis izt
1973 — Polugaevsky, Lev vs Savon, Vladimir — 1/2-1/2 — Petropolis izt
1974 — Korchnoi, Viktor vs Mecking, Henrique — 1/2-1/2 — Augusta, GA USA

7.Nh4 — 0.8% (25 parties)

1989 — Ubilava, Elizbar vs Douven, Rudy — 1-0 — Alma Ata KAZ
1996 — Wenner, Frank vs Buerger, Carsten — 1-0 — GER
1998 — Pool Theo vs Gaillard, Olivier — 0-1 — ?
2000 — Rozenberg, Dov vs Jankowicz, Robert — 1/2-1/2 — ICCF Email
2000 — Alfred Santhosh vs Schipmann, Torsten — 0-1 — Francisco Bailen in Memoriam

7.Nd4 — 0.0% (1 parties)

2009 — Riha, Josef vs Boehme, Sebastian — 0-1 — FICGS

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