Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● c2→d3, d3→e4	● e6→d5, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	—
Cases faibles	—	—
Centre	● e4 (2v1)	● d4 (1v0), ● d5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 1)
Bc8		● Bc8 Non développé (mob. 1)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	5 (● g1, ● c1, ● f1, ● a1, ● h1)	6 (● b8, ● g8, ● 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	tension
Ruptures	● c2-c4, ● d3-d4	● …c5-c4, ● …f7-f5

C00q — French: KIA 2.d3 d5 3.Nd2 c5

1.e4 e6 2.d3 d5 3.Nd2 c5 * ○ Trait aux Blancs

Ouverture — Tension centrale

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Ngf3 (Développer g1 — 68 % des parties) ; g3 (Préparer le fianchetto — 30 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nc6 (Développer b8 — 81 % des parties) ; ...Nf6 (Développer g8 — 9 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
? 1998 – Round ? – Kasparov, Garry – 1-0 – Kocho, Vladimir – G83 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nc6 5. Bg2 Nf6 6. Ne2 Be7 7. O-O b5 8. h3 a5 9. f4 b4 10. g4 Ba6
19. European Teams 2013 – Round 7.1 – Mamedov, Rauf – 1-0 – Edouard, Romain – G237 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Bd6 5. Qg4 g6 6. Qe2 Nc6 7. Ngf3 Nge7 8. Nb3 f6 9. Bh6 Rg8 10. exd5 exd5
1911 San Sebastian – Round 8 – Nimzowitsch, Aron – 0-1 – Capablanca, Jose – G50 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. Be2 Bd6 6. O-O Qc7 7. Re1 Nge7 8. c3 O-O 9. a3 f5 10. Bf1 Bd7
1937 Tbilisi ch-URS – Round 1 – Kasparian, Genrikh – 1-0 – Yudovich, Mikhail M – G116 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nc6 5. Bg2 Nf6 6. Ne2 Be7 7. O-O O-O 8. h3 Qc7 9. f4 Bd7 10. g4 Rad8
1946 ARM Ch m – Round 10 – Kasparian, Genrikh – 0-1 – Petrosian, Tigran A. – G10 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nc6 5. Bg2 g6 6. Ne2 Bg7 7. O-O Nge7 8. Re1 O-O 9. Nf4 d4 10. g4 e5
1946 ARM Ch m – Round 4 – Kasparian, Genrikh – 1-0 – Petrosian, Tigran A. – G4 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 g6 5. Bg2 Bg7 6. f4 Ne7 7. Ngf3 Nbc6 8. O-O O-O 9. Re1 Rb8 10. Kh1 b6
1951 Staunton Memorial – Round 2 – Pirc, Vasja – 0-1 – Matanovic, Aleksandar – G16 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nf6 5. Bg2 Nc6 6. Ne2 Be7 7. O-O O-O 8. Nf4 Rb8 9. Re1 Re8 10. e5 Nd7
1955 Hastings5556 – Round 3 – Olafsson, Fridrik – 1-0 – Diez del Corral, Jesus – G14 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 g6 5. g3 Bg7 6. Bg2 Ne7 7. O-O O-O 8. Re1 Nbc6 9. Qe2 e5 10. c3 b6
1957 Reykjavik – Round 8 – Pilnik, Herman – 1-0 – Gunnarsson, Gunnar K – G51 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nf6 5. Bg2 Be7 6. Ngf3 O-O 7. O-O b6 8. Re1 Bb7 9. e5 Nfd7 10. c3 Nc6
1957 URS Ch, semi final – Round 3 – Vasiukov, Evgeni – 1/2-1/2 – Sokolsky, Alexey – G30 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nf6 5. g3 g6 6. Bg2 Bg7 7. O-O O-O 8. Re1 Nc6 9. c3 b6 10. exd5 exd5
1958 COL Ch – Round 4 – Cuellar Gacharna, Miguel – 1-0 – Fernandez, Bernardo – G11 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. Be2 g6 6. O-O Bg7 7. Re1 Nge7 8. Bf1 O-O 9. c3 Qc7 10. Nb3 b6
1958 Mar del Plata – Round 13 – Pilnik, Herman – 1-0 – Olivera, Alfredo – G98 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nc6 5. Bg2 d4 6. a4 e5 7. Ngf3 Bg4 8. Nc4 f6 9. h3 Be6 10. Nh4 g6
1958 Munich olm fin-B – Round 9 – Czerniak, Moshe – 1-0 – Franck, Alfons – G89 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Bd7 5. Bg2 Bc6 6. Ngf3 Nf6 7. e5 Nfd7 8. O-O g6 9. Re1 Bg7 10. c3 b6
1959 HUN Ch Budapest HUN – Round 2 – Barcza, Gedeon – 0-1 – Bilek, Istvan – G7 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Be2 Nc6 5. Ngf3 Nf6 6. O-O Be7 7. c3 O-O 8. a3 a5 9. a4 Rb8 10. Qc2 Qc7
1961 Warsaw – Round 1 – Bednarski, Jacek B – 1-0 – Sliwa, Bogdan – G61 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nc6 5. Bg2 h5 6. Ngf3 Be7 7. O-O Nf6 8. Re1 dxe4 9. dxe4 b6 10. c3 Bb7
1963 Stevenson Memorial 11th – Round 6 – Damant, Charles Ambrose S – 1-0 – Collins, Richard Arnold – G11 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 g6 5. Bg2 Bg7 6. Ngf3 Nc6 7. c3 Nge7 8. Qe2 e5 9. O-O O-O 10. Re1 h6
1964 Amsterdam Interzonal – Round 7 – Tringov, Georgi P – 1/2-1/2 – Porath, Yosef – G69 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 dxe4 6. dxe4 b6 7. c3 Nf6 8. Bb5 Bb7 9. Qa4 Qc7 10. Ne5 Rc8
1964 Kecskemet zt – Round 10 – Bilek, Istvan – 0-1 – Pietzsch, Wolfgang – G89 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nf6 5. Be2 Nc6 6. O-O Be7 7. c3 O-O 8. Re1 b6 9. Qc2 Bb7 10. Bf1 Qc7
1964 URS – Round ? – Koifman, Ilya I – 1-0 – Doroshkievich, Vladimir K – G33 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Bd6 6. Bg2 Nf6 7. O-O O-O 8. Re1 Qc7 9. Qe2 Nd7 10. Nf1 b6
1964 Zuerich-J Zurich SUI – Round 4 – Alvarez Lee, Felix – 1-0 – Tejero Royo, Fermin – G5 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 f5 6. Qe2 Be7 7. Bg2 Nf6 8. O-O O-O 9. b3 Qc7 10. Bb2 b5
1965 HUN-ch21 – Round 1 – Csom, Istvan – 1-0 – Portisch, Ferenc – G61 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Bd6 6. Qe2 Nge7 7. Bg2 O-O 8. O-O Bc7 9. Ng5 f6 10. Nh3 b5
1966 La Habana olm fin-B – Round 12 – Hindle, Owen M – 1-0 – Sliwa, Bogdan – G45 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nf6 5. g3 b6 6. Bg2 dxe4 7. dxe4 Ba6 8. e5 Nd5 9. a3 Nc6 10. c4 Nde7
1966 Malmo – Round 5 – Horberg, Bengt-Eric – 1/2-1/2 – Ek, Hans – G12 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Nf6 6. c3 Be7 7. Bg2 O-O 8. O-O b6 9. Re1 Bb7 10. e5 Nd7
1968 Corr – Round 1 – Konstantinopolsky, Alexander – 1-0 – Le Guven – G28 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Bd6 6. Bg2 Nf6 7. O-O O-O 8. Re1 Nd7 9. d4 Qb6 10. exd5 exd5
1968 ROM Ch – Round 8 – Szabo, Iuliu inactive – 0-1 – Voiculescu, Paul – G44 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Nf6 6. Bg2 Qc7 7. O-O b6 8. Re1 Bb7 9. c3 Be7 10. Nf1 d4
1969 JUG-24ch – Round 3 – Ljubojevic, Ljubomir – 1/2-1/2 – Puc, Stojan – G5 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nc6 5. Bg2 g6 6. Ne2 Bg7 7. O-O Nge7 8. c3 O-O 9. f4 e5 10. h3 Kh8
7. World Team Championship 2010 – Round 4 – Amin, Bassem – 1/2-1/2 – Akobian, Varuzhan – G69 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Bd6 5. Bg2 Ne7 6. f4 Nbc6 7. Ngf3 O-O 8. O-O f6 9. Re1 Bd7 10. c3 Be8
World Blitz 2015 – Round 3.47 – Duda, Jacob – 1-0 – Naumann, Alexander – G178 1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Bd6 5. Bg2 Ne7 6. Nh3 O-O 7. O-O Nbc6 8. f4 f6 9. Nf2 Qc7 10. c3 b6

C00q — KIA 2.d3 d5 3.Nd2 c5 (1911)

1.e4 e6 2.d3 d5 3.Nd2 c5

Les coups candidats

4.Ngf3 — 70.3% (7665 parties)

Ambassadeurs : De Coverly, Roger D (19x), Barsov, Alexei (17x), Koskela, Niina (17x), Moskalenko, Viktor (16x), Barbu, George-Viorel (13x), Brodie, Hugh (12x), Rolletschek, Heinrich (10x), Ciocaltea, Victor (9x)

4.g3 — 27.5% (3003 parties)

Ambassadeurs : Oratovsky, Michael (10x), Kumpulainen, Jari (10x), Tochtermann, Georg, Dr. (9x), Kadric, Denis (8x), Tibensky, Robert (7x), Visser, Yge (7x), Hartvig, Ove Weiss (7x), Varavin, Viktor (6x)

4.f4 — 0.8% (92 parties)

Ambassadeurs : Wieder, Heiner (3x), Snyta, Zdenek (3x), Thorhallsson, Throstur (2x), Van Wagensveld, Ton (2x), Tiller, Bjorn (2x), Soares, Joaquim Domingos (1x), Valezio Filho, Karline (1x), Kamptner, Wolfgang (1x)

4.c3 — 0.8% (86 parties)

Ambassadeurs : Schmidt, Horst (2x), Schmidt, Aaron Joel (1x), Maier, Adrian (1x), Leriche, Andre (1x), Brodie, Hugh (1x), Schoenbauer, Max (1x), Kern, Manfred (1x), Padevsky, Nikola (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4.Ngf3	4.g3	4.f4	4.c3
<1800	778	69%	27%	1%	2%
1800-2200	5541	71%	27%	1%	1%
2200-2600	2953	71%	28%	1%	0%
2600+	28	43%	54%	4%	—

Évolution par décennie (% des parties)

Décennie	N parties	4.Ngf3	4.g3	4.f4	4.c3
1950s	31	61%	35%	—	—
1960s	157	66%	34%	—	—
1970s	281	69%	30%	0%	1%
1980s	457	70%	27%	1%	1%
1990s	2373	67%	31%	1%	1%
2000s	3344	71%	27%	1%	1%
2010s	3500	72%	26%	1%	1%
2020s	758	72%	26%	1%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4.Ngf3	72%	72%	+0.3%
4.g3	26%	26%	+0.2%
4.f4	1%	1%	-0.1%
4.c3	1%	1%	-0.2%

Joueurs célèbres

Champions du monde dans cette position

Kasparov, Garry — 7 parties
Botvinnik, Mikhail — 2 parties
Tal, Mikhail — 1 partie
Kramnik, Vladimir — 1 partie

Parties historiques

4.Ngf3 — 70.3% (7665 parties)

1955 — Olafsson, Fridrik vs Diez del Corral, Jesus — 1-0 — Hastings ENG
1955 — Olafsson, Helgi vs Diez del Corral, Jesus — 1-0 — ?
1955 — Voitsikh Nina vs Bondarenko, Lydmila — 1-0 — Voroshilovgrad
1955 — Saidy, Anthony vs Collins, John W — 0-1 — New York, NY USA
1956 — Gurgenidze, Bukhuti vs Sakharov, Yuri N — 1-0 — URS-ch sf Tbilisi GEO

4.g3 — 27.5% (3003 parties)

1951 — Pirc, Vasja vs Matanovic, Aleksandar — 0-1 — Birmingham ENG
1954 — Djurasevic, Bozidar vs Czerniak, Moshe — 1-0 — Belgrade SRB
1956 — Braun, Gottfried, Dr. vs Dorawa, Bernhard — 1-0 — Zittau
1957 — Pilnik, Herman vs Gunnarsson, Gunnar K — 1-0 — Reykjavik ISL
1957 — Alster, Ladislav vs Golz, Werner — 1-0 — Ploiesti

4.f4 — 0.8% (92 parties)

1979 — Bilinski, Vanda vs Naepfer, Anna — 1-0 — Biel SUI
1982 — Soares, Joaquim Domingos vs Valezio Filho, Karline — 1-0 — Goiania
1983 — Barlow, Bertrand A vs Georghiou, Paul T — 0-1 — North London Under
1988 — Wallwork, G. vs Schmidt, Theo — 1/2-1/2 — corr EU/M/GT
1988 — Glur, Erwin vs Borek, Jutta — 1-0 — Lienz op

4.c3 — 0.8% (86 parties)

1972 — Leriche, Andre vs Brodie, Hugh — 1-0 — Ottawa Open
1973 — Schoenbauer, Max vs Kern, Manfred — 1/2-1/2 — Krumbach
1983 — Schmidt, Aaron Joel vs Maier, Adrian — 1/2-1/2 — GER
1984 — Schmidt, Horst vs Brix, Guenter — 1-0 — Viernheim GER
1988 — Padevsky, Nikola vs Prandstetter, Eduard — 1/2-1/2 — Dortmund open

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