A08e — Reti: KIA, 2…c5, 3.Bg2 Nc6 4.d4

1.Nf3 d5 2.g3 c5 3.Bg2 Nc6 4.d4 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte f4….

Atouts. Les Blancs s'appuient sur les cases fortes f4, e5 et g5 et la paire de fous.

Côté adverse. Les fous enfermés en c8 et f8, le roi resté au centre et une pièce en prise (le pion en c5).

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le cavalier b1, le fou c1 et les tours a1 et h1).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; Nbd2 (Développer Nb1) ; Be3 (Développer Bc1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte b4.

Atouts. Les Noirs s'appuient sur la case forte b4 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et g2 et le roi resté au centre.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le cavalier g8, les fous c8 et f8 et les tours a8 et h8).

Plans. ...Nf6 (Développer Ng8) ; ...Bg4 (Développer Bc8, clouer Nf3) ; ...c4 (Rupture) ; ...e6 (Rupture) ; ...e5 (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	● f4 (2v0), ● e5 (2v1), ● g5 (2v0)	● b4 (2v0)
Cases faibles	● d4	—
Centre	● e5 (2v1)	● d5 (1v0), ● e4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (● b1, ● c1, ● a1, ● h1)	5 (● 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	fermé
Ruptures	● c2-c3	● …c5-c4, ● …e7-e6, ● …e7-e5, ● …f7-f6, ● …f7-f5

Partie
1937 Trebitsch mem3738 – Round 6 – Hoenlinger, Baldur – 1/2-1/2 – Bacher, Rudolf – G23 1. d4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 cxd4 5. Nxd4 Nf6 6. c4 Nxd4 7. Qxd4 Qc7 8. Nc3 e5 9. Nxd5 Bb4+ 10. Bd2 Nxd5
1938 URS Ch, semi final – Round 1 – Gothilf, Solomon Borisovich – 1/2-1/2 – Ilyin Zhenevsky, Alexander – G78 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. b3 Be7 7. Bb2 O-O 8. Nbd2 b5 9. dxc5 Bxc5 10. Ne5 Nxe5
1938 USA Ch fin-A – Round 1 – Santasiere, Anthony – 1-0 – Kashdan, Isaac – G10 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. c4 cxd4 7. Nxd4 Qb6 8. Nxc6 bxc6 9. Nc3 Be7 10. cxd5 exd5
1939 Buenos Aires ol f-A – Round 3 – Foltys, Jan – 0-1 – Acebey Michel, Veroska – G61 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 Be7 7. dxc5 Bxc5 8. cxd5 exd5 9. Nbd2 O-O 10. Nb3 Bb6
1940 New York ch-USA – Round 12 – Shainswit, George – 1/2-1/2 – Kupchik, Abraham – G71 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 Be7 7. cxd5 Nxd5 8. dxc5 Bxc5 9. e4 Nf6 10. Qxd8+ Nxd8
1941 New York State CA – Round 4 – Santasiere, Anthony – 1/2-1/2 – Cruz, Walter – G13 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. b3 Bd6 7. Bb2 O-O 8. e3 Qe7 9. c4 Rd8 10. cxd5 exd5
1942 Mar del Plata – Round 7 – Iliesco, Juan – 1/2-1/2 – Espina, Carlos – G63 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 5. Nxd4 e6 6. O-O Bc5 7. Nb3 Bb6 8. c4 dxc4 9. Qxd8+ Bxd8 10. N3d2 Nd4
1944 La Plata Jockey Club – Round 4 – Iliesco, Juan – 0-1 – Najdorf, Miguel – G23 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. e3 Bd6 7. dxc5 Bxc5 8. c4 O-O 9. Nbd2 Qe7 10. cxd5 exd5
1944 Moskou ch-URS – Round 1 – Lisitsin, Georgy – 1/2-1/2 – Kotov Lundqvist, Alex – G104 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. c4 cxd4 7. cxd5 Nxd5 8. Nxd4 Bd7 9. Nc3 Nxc3 10. bxc3 Bc5
1945 Moscow Ch – Round 16 – Zhivtsov, A. – 0-1 – Verlinsky, Boris – G93 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. b3 cxd4 7. Nxd4 Qb6 8. Bb2 Bc5 9. e3 O-O 10. Nxc6 bxc6
1945 Novi Sad – Round 9 – Popovic, Vojislav – 0-1 – Gligorić, Svetozar – G110 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O Qb6 6. c3 e6 7. e3 Bd6 8. Nbd2 O-O 9. b3 e5 10. dxe5 Nxe5
1946 Helsinki – Round 8 – Rantanen, Matti – 1/2-1/2 – Ojanen, Kaarle S – G15 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O cxd4 6. Nxd4 e6 7. c4 Bd7 8. Nc3 dxc4 9. Nxc6 bxc6 10. Qa4 Nd5
1946 Mar del Plata – Round 17 – Iliesco, Juan – 0-1 – Acosta Garcia, Rafael Isaac – G152 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Qb6 6. e3 Nf6 7. b3 Be7 8. Bb2 cxd4 9. exd4 O-O 10. Nbd2 Bd7
1946 San Francisco ARG – Round 4 – Iliesco, Juan – 1/2-1/2 – Maderna, Carlos – G10 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. O-O e6 7. c4 Bc5 8. Nb3 Be7 9. cxd5 exd5 10. Nc3 Be6
1947 Mar del Plata – Round 1 – Iliesco, Juan – 1/2-1/2 – Michel, Pascal – G15 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 a6 7. cxd5 exd5 8. Nc3 Be7 9. dxc5 Bxc5 10. Bg5 d4
1947 Mar del Plata – Round 10 – Iliesco, Juan – 1/2-1/2 – Maderna, Carlos – G91 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nb3 Bb6 8. Nc3 Nf6 9. Na4 Bc7 10. Nac5 O-O
1947 Mar del Plata – Round 8 – Iliesco, Juan – 1/2-1/2 – Michel, Paul – G73 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 a6 7. cxd5 exd5 8. Nc3 Be7 9. dxc5 Bxc5 10. Bg5 d4
1948 Hastings4849 – Round 2 – Tylor, Theodore Henry – 0-1 – Wood, Baruch – G7 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Bg4 5. Ne5 Nxe5 6. dxe5 e6 7. c4 Ne7 8. O-O Qd7 9. h3 Bf5 10. Qb3 Nc6
1949 GER Ch – Round ? – De Lange, Abigaelle – 1-0 – Caceres Richter, Dylan – G17 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O cxd4 6. Nxd4 Bd7 7. c4 e5 8. Nxc6 Bxc6 9. cxd5 Nxd5 10. Nc3 Nxc3
1949 GER Ch Bad Pyrmont GER – Round ? – Machate, Gottlieb – 1-0 – Heinicke, Herbert – G11 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. b3 cxd4 7. Nxd4 Bc5 8. Nxc6 bxc6 9. c4 O-O 10. Qc2 Be7
1950 Zlin ch CZE – Round 14 – Zita, Frantisek – 1-0 – Tikovsky, Alexandr – G11 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Bf5 5. O-O Rc8 6. c4 e6 7. Qa4 Qb6 8. cxd5 exd5 9. Nc3 cxd4 10. Nxd5 Qc5
1951 GDR Ch – Round 2 – Elstner, Rudolf – 1-0 – Ruppe, Otto – G3 1. d4 d5 2. g3 c5 3. Bg2 Nc6 4. Nf3 cxd4 5. Nxd4 e5 6. Nxc6 bxc6 7. c4 Be6 8. Qa4 Bd7 9. O-O Ne7 10. Nc3 d4
1951 Staunton Memorial – Round 2 – Wade, Robert G – 1/2-1/2 – Donner, Jan-Hein – G18 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nb3 Bb6 8. c4 Nge7 9. cxd5 Nxd5 10. N1d2 Ne5
1951 Zonal – Round 11 – Pirc, Vasja – 1/2-1/2 – Donner, Jan-Hein – G28 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nb3 Bb6 8. c4 Nge7 9. Nc3 dxc4 10. Nd2 Na5
1951 Zonal – Round 13 – Pirc, Vasja – 1-0 – Aitken, James – G33 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nb3 Bb6 8. c4 dxc4 9. N3d2 Na5 10. Na3 Nf6
1952 GBR-ch39 – Round 4 – Boxall, Ronald Frank – 1/2-1/2 – Aitken, James – G4 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. O-O e5 7. Nxc6 bxc6 8. c4 Be7 9. Nc3 Be6 10. Bg5 e4
1952 POL-ch10 – Round 18 – Kwilecki, Andrzej – 1/2-1/2 – Makarczyk, Kazimierz – G134 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 cxd4 7. Nxd4 Qb6 8. Nb5 a6 9. Be3 Bc5 10. Bxc5 Qxc5
1952 YUG Ch – Round 17 – Krivec Slavko – 1/2-1/2 – Andric, Dragoslav – G23 1. d4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nxc6 bxc6 8. c4 Nf6 9. Qc2 Be7 10. Rd1 O-O
1953 CSR Ch Prague – Round 10 – Filip, Miroslav – 1-0 – Sefc, Jan – G63 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. c4 cxd4 7. Nxd4 Qb6 8. Nxc6 bxc6 9. cxd5 cxd5 10. Nc3 Be7
1953 Hastings Premier 1952/53 28th – Round 6 – Tylor, Theodore Henry – 1/2-1/2 – Fairhurst, William – G20 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Bg4 5. Ne5 Bf5 6. Nxc6 bxc6 7. O-O e6 8. c4 cxd4 9. cxd5 cxd5 10. Qxd4 Nf6
1957 Leningrad Ch – Round 1 – Ragozin, Viacheslav – 0-1 – Ravinsky, Grigory – G12 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c3 Be7 7. e3 O-O 8. b3 Qc7 9. Bb2 b6 10. Nbd2 Ba6
1957 New York ch-USA – Round 5 – Lombardy, William J – 1-0 – Kramer, Gerald – G31 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. c4 Qb6 7. Nxc6 bxc6 8. Nc3 e6 9. O-O Be7 10. cxd5 cxd5
1959 Lodz ch POL – Round 8 – Drozd, Ryszard – 1-0 – Lubienski, Tadeusz – G42 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 Be7 7. cxd5 Nxd5 8. Nc3 Nxc3 9. bxc3 O-O 10. e4 Qa5
1959 Mar del Plata – Round 11 – Wexler, Bernardo – 1/2-1/2 – Sanguinetti, Ricardo – G77 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nxc6 bxc6 8. c4 Ne7 9. Qc2 Bb6 10. b3 O-O
1960 AUS Ch – Round 2.5 – Ozols, Karlis – 1/2-1/2 – Basta, Emanuel A – G7 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O cxd4 6. Nxd4 e6 7. c4 Bc5 8. Nxc6 bxc6 9. Nc3 O-O 10. Qc2 Ba6
1960 Budapest zt – Round 8 – Kozma, Julius – 1-0 – Clarke, Peter H – G48 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O Bg4 6. Ne5 cxd4 7. Nxg4 Nxg4 8. e3 Nf6 9. exd4 e6 10. c3 Be7
1960 Leningrad tt – Round 11 – Forintos, Gyozo V – 0-1 – Spassky, Boris V. – G161 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. b3 cxd4 7. Nxd4 Bc5 8. Bb2 Bxd4 9. Bxd4 e5 10. Bc5 Qa5
1960 UKR Ch sf – Round 12 – Pogrebissky, Iosif – 0-1 – Poliak, Evsey – G78 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. b3 cxd4 7. Nxd4 Bc5 8. Nxc6 bxc6 9. c4 O-O 10. cxd5 cxd5
1961 Baku ch-URS – Round 1 – Lein, Anatoly – 1-0 – Kots, Yuri I – G21 1. Nf3 c5 2. g3 d5 3. Bg2 Nc6 4. d4 Nf6 5. O-O Qb6 6. c4 cxd4 7. cxd5 Nxd5 8. Nxd4 Nxd4 9. Bxd5 g6 10. Nc3 Bd7
1962 Stockholm Interzonal – Round 20 – Kortchnoi, V. – 1-0 – Meza Pomar, Aroa – G183 1. g3 d5 2. Nf3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O Bf5 6. c4 e6 7. Nc3 Be7 8. cxd5 Nxd5 9. Qb3 cxd4 10. Qxb7 Qc8
1964 Buenos Aires – Round 12 – Wexler, Bernardo – 1/2-1/2 – Olivera, Alfredo – G110 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 5. Nxd4 e5 6. Nxc6 bxc6 7. c4 Bb4+ 8. Nd2 Qa5 9. O-O Be6 10. cxd5 cxd5
1964 Tel Aviv olm prel – Round 3 – Koshnitsky, Gregory – 0-1 – Silva Nazzari, Raul – G120 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. c4 e6 6. Nc3 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. O-O Be7
1964 WchT U26 11. fin-A – Round 11.3 – Stefanov, Josif Jovchev – 0-1 – Kovacs, Laszlo M – G200 1. Nf3 c5 2. g3 d5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. c4 cxd4 7. Nxd4 Bc5 8. Nb3 Bb6 9. Nc3 dxc4 10. Nd2 Na5
1965 FRG CupT – Round 1.1 – Rinder, Gerd – 1/2-1/2 – Pfleger, Helmut, Dr. – G3 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. b3 cxd4 7. Nxd4 Bc5 8. Nxc6 bxc6 9. c4 O-O 10. Qc2 Qe7
1965 It II Beverwijk NED – Round 7 – Kramer, Haije – 1/2-1/2 – Balashov, Yuri S – G23 1. Nf3 c5 2. g3 d5 3. Bg2 Nc6 4. d4 Nf6 5. O-O Bg4 6. Ne5 cxd4 7. Nxg4 Nxg4 8. e3 Nf6 9. exd4 e6 10. Re1 Be7
1967 Hoogovens-B – Round 1 – Docze Sandor, Efraim – 1/2-1/2 – Karaklajic, Nikola – G7 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 5. Nxd4 e6 6. O-O Bc5 7. e3 Nge7 8. Nb3 Bb6 9. N1d2 O-O 10. c4 dxc4
1967 Leningrad – Round 1 – Chepukaitis, Genrikh – 0-1 – Korchnoi, Viktor – G38 1. Nf3 c5 2. g3 Nc6 3. Bg2 d5 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nb3 Bb6 8. Na3 a5 9. c4 a4 10. Nd2 Nge7
1969 Raach zt – Round 18 – Jakobsen, Ole – 1/2-1/2 – Portisch, Lajos – G155 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Bd7 6. c4 dxc4 7. Na3 cxd4 8. Nxc4 Bc5 9. e3 Nf6 10. Nxd4 Bxd4
20. European Teams 2015 – Round 3.2 – Svidler, Peter – 1/2-1/2 – Vallejo Pons, Francisco – G125 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O cxd4 6. Nxd4 e5 7. Nxc6 bxc6 8. c4 Be6 9. Qa4 Qd7 10. Nc3 Rc8
5. Norway Blitz 2017 – Round 9.4 – Nakamura, Hikaru – 1/2-1/2 – Anand, Viswanathan – G44 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 5. Nxd4 e5 6. Nxc6 bxc6 7. c4 Nf6 8. Nc3 Rb8 9. O-O Be6 10. Qa4 Qd7
Corsican Circuit Final 2016 – Round 4.1 – Vachier-Lagrave, Maxime – 1/2-1/2 – Anand, Viswanathan – G39 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O cxd4 6. Nxd4 e5 7. Nxc6 bxc6 8. c4 Be6 9. Qa4 Qd7 10. Rd1 Rc8
FIDE Grand Swiss 2025 – Round 8 – Harikrishna Pentala – 0-1 – Anton Guijarro David – G429 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nxc6 bxc6 8. c4 Nf6 9. Qc2 Qe7 10. b3 O-O
FIDE WCh KO 2000 – Round 1.3 – Gulko, Boris – 1/2-1/2 – Bezgodov, Alexei – G34 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 Be7 7. dxc5 Bxc5 8. a3 dxc4 9. Qxd8+ Nxd8 10. Ne5 Bd7
FIDE World Championship Match 2024 – Round 14 – Ding Liren – 0-1 – Gukesh D – G14 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Nge7 7. c4 Nxd4 8. Qxd4 Nc6 9. Qd1 d4 10. e3 Bc5
FIDE World Cup 2025 – Round R1 Blitz 1 – Grigoryan Karen H. – 1/2-1/2 – Adly Ahmed – G207 1. e4 c6 2. d4 d5 3. f3 e6 4. Nc3 Nd7 5. a3 b5 6. Be2 b4 7. axb4 Bxb4 8. Nh3 Ne7 9. O-O O-O 10. Na4 Ng6
FIDE World Cup 2025 – Round R1 Classical 2 – Husbands Orlando – 0-1 – Svane – G89 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Bf5 7. Qf3 Bg6 8. Bxf6 Qxf6 9. Qxf6 gxf6 10. h4 h5
FIDE World Cup 2025 – Round R2 Classical 1 – Vachier-Lagrave Maxime – 1-0 – Ganguly Surya Shekhar – G226 1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. e3 Nc6 5. Nbd2 Bg4 6. c3 e6 7. Bb5 cxd4 8. exd4 Bd6 9. Bxd6 Qxd6 10. O-O O-O
FTX Crypto Cup 2022 – Round 7.1 – Carlsen, Magnus – 1/2-1/2 – Praggnanandhaa R – G101 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nxc6 bxc6 8. c4 Nf6 9. Qc2 Qe7 10. Nc3 O-O
GCT Blitz YourNextMove 2016 – Round 5.1 – Vachier-Lagrave, Maxime – 0-1 – Anand, Viswanathan – G21 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O cxd4 6. Nxd4 e5 7. Nxc6 bxc6 8. c4 Be6 9. Qa4 Qd7 10. Rd1 Rc8
Niksic 1978 – Round 5 – Ribli, Zoltan – 1-0 – Ljubojevic, Ljubomir – G13 1. Nf3 c5 2. g3 d5 3. Bg2 Nc6 4. d4 e6 5. O-O Qb6 6. dxc5 Bxc5 7. c4 Nf6 8. cxd5 Nxd5 9. e4 Nf6 10. Nc3 Ng4
Saint Louis Blitz 2024 - Round 8 - Nakamura Hikaru - 0-1 - So Wesley - G37 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. e3 Be7 7. b3 O-O 8. dxc5 Bxc5 9. Bb2 b6 10. c4 Bb7
Saint Louis Rapid 2024 - Round 7 - Nakamura Hikaru - 1/2-1/2 - So Wesley - G34 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. e3 Be7 7. dxc5 O-O 8. Qe2 e5 9. c4 d4 10. Rd1 Bxc5
Thessaloniki olm 1984 – Round 12 – Dzindzichashvili, Roman – 1-0 – Ljubojevic, Ljubomir – G81 1. Nf3 c5 2. g3 d5 3. Bg2 Nc6 4. d4 Nf6 5. O-O Bf5 6. c4 dxc4 7. Qa4 Nd7 8. dxc5 e6 9. Qxc4 Bxc5 10. Nc3 Rc8
World Blitz 2016 – Round 11.16 – Jakovenko, Dmitry – 0-1 – Anand, Viswanathan – G431 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O cxd4 6. Nxd4 e5 7. Nxc6 bxc6 8. c4 Be6 9. Bg5 Qd7 10. Bxf6 gxf6
World Blitz 2016 – Round 6.4 – Matlakov, Maxim – 0-1 – Anand, Viswanathan – G248 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O cxd4 6. Nxd4 e5 7. Nxc6 bxc6 8. c4 Be6 9. Nc3 Rc8 10. cxd5 cxd5
World Blitz 2023 – Round 6.2 – Artemiev, Vladislav – 1-0 – Praggnanandhaa R – G334 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nb3 Bb6 8. e4 d4 9. c3 e5 10. cxd4 exd4

A08e — KIA

1.Nf3 d5 2.g3 c5 3.Bg2 Nc6 4.d4

Les coups candidats

4…e6 — 41.4% (1739 parties)

Ambassadeurs : Loginov, Valery A (16x), Romanishin, Oleg M (10x), Korchnoi, Viktor (9x), Serper, Grigory (8x), Berczes, Csaba (8x), Iliesco, Juan (6x), Bezgodova, Svetlana (6x), Haba, Petr (6x)

4…Nf6 — 37.2% (1560 parties)

Ambassadeurs : Kengis, Edvins (7x), Koehler, Josef (6x), Li, Ben (6x), Merry, Alan B (5x), Vaganian, Rafael A (5x), Zvjaginsev, Vadim (5x), So, Wesley (5x), Rychagov, Nikita (5x)

4…cxd4 — 14.9% (625 parties)

Ambassadeurs : Geroly, Jozsef (3x), Auvinen, Esa (3x), Spasov, Spas (3x), Nemeth, Antal (3x), Vulinovic, Radivoje (3x), Lage, Pedro Ferreira (3x), Iliesco, Juan (2x), Kestler, Hans-Guenther (2x)

4…Bg4 — 3.3% (137 parties)

Ambassadeurs : Tylor, Theodore Henry (2x), From, Sigfred (2x), Mrnka, Jan (2x), Kontarinis, Andreas (2x), Aoyama, Edmundo (2x), Wood, Baruch (1x), Andres Lange, Elke (1x), Schlenker, Gert (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…e6	4…Nf6	4…cxd4	4…Bg4
<1800	114	45%	19%	23%	3%
1800-2200	1609	37%	36%	20%	4%
2200-2600	1707	46%	42%	8%	3%
2600+	86	51%	45%	3%	—

Évolution par décennie (% des parties)

Décennie	N parties	4…e6	4…Nf6	4…cxd4	4…Bg4
1920s	3	100%	—	—	—
1930s	9	67%	22%	11%	—
1940s	33	42%	39%	9%	6%
1950s	39	44%	31%	15%	8%
1960s	57	33%	51%	12%	2%
1970s	107	50%	38%	7%	4%
1980s	236	47%	39%	10%	2%
1990s	627	47%	32%	14%	4%
2000s	996	43%	33%	17%	4%
2010s	1452	38%	38%	17%	4%
2020s	637	38%	46%	12%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…e6	38%	38%	+0.2%
4…Nf6	38%	46%	▲ +7.9%
4…cxd4	17%	12%	▼ -4.9%
4…Bg4	4%	2%	▼ -2.1%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 6 parties
Gukesh D — 5 parties
Ding, Liren — 3 parties
Ju, Wenjun — 1 partie
Carlsen, Magnus — 1 partie

Parties historiques

4…e6 — 41.4% (1739 parties)

1926 — Gereben, Erno vs Chalupetzky, Ferenc — 1-0 — Kormend
1928 — Muller, Hans P vs Beutum, Sigmund — 1-0 — Vienna AUT
1928 — Reti, Richard vs Leonhardt, Paul — 1/2-1/2 — Berlin GER
1934 — Roedl, Ludwig vs Reinhardt, Enrique — 1-0 — Aachen GER
1937 — Pelikan, Jorge vs Acebey Michel, Veroska — 1/2-1/2 — Bad Elster

4…Nf6 — 37.2% (1560 parties)

1936 — Santasiere, Anthony vs Mugridge, Donald — 0-1 — Philadelphia, PA USA
1938 — Santasiere, Anthony vs Kashdan, Isaac — 1-0 — Boston, MA USA
1940 — Klausen, V. vs Nielsen, Julius — 1-0 — Copenhagen KS Jub
1941 — Barcza, Gedeon vs Balogh, Janos — 1-0 — Budapest HUN
1941 — Lundin, Erik vs Stoltz, Gosta — 1-0 — Goteborg SWE

4…cxd4 — 14.9% (625 parties)

1937 — Hoenlinger, Baldur vs Bacher, Rudolf — 1/2-1/2 — Vienna AUT
1942 — Iliesco, Juan vs Espina, Carlos — 1/2-1/2 — Mar del Plata ARG
1946 — Iliesco, Juan vs Maderna, Carlos — 1/2-1/2 — San Francisco, CA USA
1948 — Koshnitsky, Gregory vs Lazare, Stefan — 0-1 — Melbourne AUS
1951 — Elstner, Rudolf vs Ruppe, Otto — 1-0 — Schwerin GER

4…Bg4 — 3.3% (137 parties)

1948 — Tylor, Theodore Henry vs Wood, Baruch — 0-1 — Hastings ENG
1948 — Andres Lange, Elke vs Schlenker, Gert — 1-0 — Bad Nauheim GER
1953 — Tylor, Theodore Henry vs Fairhurst, William — 1/2-1/2 — White Rock Pavilion
1956 — Behrensen, Joern vs Wexler, Eithan — 0-1 — Mar del Plata ARG
1956 — Raymond vs Curdo, John — 0-1 — New England

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