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 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.
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 : Bb4 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bg2 enfermé.
Problèmes : Bc8 enfermé.
Plans :
● ...d6 — Libérer Bc8
● ...Bg4 — Clouer Nf3
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A29p — Four Knights Main Line

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

Eval: [+0.11]

Les coups candidats

7.Ng5 — 70.7% (2269 parties)

Ambassadeurs : Zielinski, Sergej (49x), Tsenkov, Ljubomir (18x), Sande, Øystein (12x), Chorfi, Khaled (11x), Vetter, Udo (11x), Brooks, Ian S Dr (10x), Naumkin, Igor (10x), Garau, Bernard (9x)

7.Ne1 — 28.6% (917 parties)

Ambassadeurs : Beck, Georges (23x), Belchev, Branimir Petrov (18x), Uhlmann, Wolfgang (13x), Farago, Ivan (10x), Nitsche, Werner (7x), Pech, Matej (7x), Keskisarja, Teemu (6x), Pech, Jaroslav Jr (6x)

7.Nh4 — 0.7% (21 parties)

Ambassadeurs : Neale, Mark (2x), Ubilava, Elizbar (1x), Douven, Rudy (1x), Wenner, Frank (1x), Buerger, Carsten (1x), Pool Theo (1x), Gaillard Olivier (1x), Rozenberg, Dov (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	71	63%	37%	—	—
1800-2200	932	72%	27%	1%	0%
2200-2600	1267	71%	28%	1%	—
2600+	63	65%	33%	2%	—

Évolution par décennie (% des parties)

Décennie	N parties	7.Ng5	7.Ne1	7.Nh4	7.Nd4
1960s	8	75%	25%	—	—
1970s	151	50%	50%	—	—
1980s	242	47%	53%	0%	—
1990s	556	71%	29%	0%	—
2000s	967	72%	28%	0%	0%
2010s	1007	79%	21%	1%	—
2020s	277	71%	26%	3%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.Ng5	79%	71%	▼ -7.4%
7.Ne1	21%	26%	▲ +5.6%
7.Nh4	1%	3%	▲ +1.8%
7.Nd4	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 10 parties
Kasparov, Garry — 8 parties
Karpov, Anatoly — 5 parties
Anand, Viswanathan — 4 parties
Karpov, Aleksandr — 2 parties
Tal, Mikhail — 1 partie
Ding, Liren — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

7.Ng5 — 70.7% (2269 parties)

1962 — Eliskases, Erich vs Smyslov, Vladimir — 1/2-1/2 — Mar del Plata ARG
1966 — Ujtelky, Maximilian vs Smyslov, Vladimir — 1/2-1/2 — Polanica Zdroj POL
1966 — Sliwa, Bogdan vs Smyslov, Vasily — 0-1 — Polanica Zdroj POL
1966 — Sliwa, Bogdan vs Smyslov, Vladimir — 0-1 — Polanica Zdroj POL
1966 — Nei, Iivo vs Fuchs, Reinhart — 0-1 — Zinnowitz Zinnowitz GER

7.Ne1 — 28.6% (917 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 — Stoliar, Efim Samoilovich vs Szilagyi, Peter — 1-0 — Albena

7.Nh4 — 0.7% (21 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 — Stummerer, Alfred vs Schipmann, Torsten — 0-1 — Francisco Bailen in Memoriam

7.Nd4 — 0.0% (1 parties)

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

	♔ 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 Enfermé (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	semi-ouvert
Ruptures	● c4-c5, ● d2-d3, ● d2-d4, ● e2-e3	● …d7-d6, ● …d7-d5

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

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