E04q — Catalan: Open, 5.Nf3 c5 6.O-O Nc6 7.Qa4 Bd7 8.Qxc4

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 c5 6.O-O Nc6 7.Qa4 Bd7 8.Qxc4 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Attaque sur le roi adverse resté au centre.

Atouts. Les Blancs s'appuient sur une majorité de pions à l'centre (2 contre 1), les cases fortes f4, e5 et g5, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Les fous enfermés en d7 et f8 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b1, le fou c1 et la tour a1).

Plans. Nc3 (Développer Nb1) ; Bg5 (Clouer Nf6).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte d5.

Atouts. Les Noirs s'appuient sur une majorité de pions à l'aile_dame (3 contre 2), les cases fortes b4 et d5, un avant-poste en d5, la paire de fous et la colonne semi-ouverte d.

Côté adverse. Les fous enfermés en c1 et g2.

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

Plans. ...Be7 (Développer Bf8) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● f7→e6
Passés	—	—
Majorité	● centre 2v1	● aile_dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● e5 (2v1), ● g5 (2v0)	● b4 (2v1), ● d5 (2v1)
Cases faibles	● d4	● c5
Centre	● e5 (2v1)	● d5 (2v1), ● e4 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Enfermé (mob. 2)
Bd7		● Bd7 Enfermé (mob. 1)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	3 (● f8, ● a8, ● h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Au centre !
Droits de roque	—	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d4-d5, ● e2-e3	● …e6-e5

Partie
1928 It (Men) Berlin GER – Round 8 – Reti, Richard – 1/2-1/2 – Leonhardt, Paul – G6 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 Qb6 9. dxc5 Qxc5 10. Qxc5 Bxc5
1940 New York ch-USA – Round 4 – Shainswit, George – 1/2-1/2 – Littman, G. – G17 1. d4 e6 2. Nf3 Nf6 3. g3 c5 4. Bg2 d5 5. O-O Nc6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 Qb6 9. dxc5 Bxc5 10. Nc3 Na5
1940 URS-sf – Round 1 – Grechkin, Dmitry M – 1/2-1/2 – Rauzer, Vsevolod – G83 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 Qb6 9. dxc5 Qxc5 10. Qxc5 Bxc5
1944 Mar del Plata – Round 12 – Pelikan, Jan – 1/2-1/2 – Guimard, Carlos E – G98 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
1945 Hastings4546 – Round 9 – Ekstrom, Folke – 1-0 – Sergeant, Edward – G52 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 Na5 9. Qd3 Qb6 10. Na3 cxd4
1947 Berlin GER – Round 1 – Elstner, Rudolf – 1-0 – Steneberg, Fritz – G1 1. d4 d5 2. Nf3 Nf6 3. g3 c5 4. Bg2 Nc6 5. O-O e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
1950 Hastings5051 – Round 7 – Golombek, Harry – 1/2-1/2 – Unzicker, Wolfgang – G30 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Be7
1950 Travemuende – Round 1 – Blau, Max – 1-0 – Saemisch, Friedrich – G4 1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. d4 d5 5. O-O e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
1950 Venice – Round 1 – Primavera, Giuseppe – 0-1 – Letelier Martner, Rene – G6 1. d4 e6 2. g3 c5 3. Nf3 d5 4. Bg2 Nf6 5. c4 dxc4 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 Na5 9. Qc2 Rc8 10. Nc3 b5
1951 BRA Ch – Round 10 – De Freitas, Marcio Elisio – 1/2-1/2 – Mangini, Jose Henrique de Mello – G21 1. d4 d5 2. Nf3 Nf6 3. g3 c5 4. Bg2 Nc6 5. O-O e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Be7
1952 URS ch sf – Round 1 – Nei, Iivo – 1/2-1/2 – Ravinsky, Grigory – G7 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
1953 Glasgow International – Round 3 – Golombek, Harry – 1/2-1/2 – Aitken, James – G9 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 dxc4 5. Bg2 c5 6. Qa4+ Bd7 7. Qxc4 Nc6 8. O-O cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
1953 Hoogovens – Round 1 – Cortlever, Nico – 1/2-1/2 – Bouwmeester, Hans – G17 1. Nf3 Nf6 2. g3 d5 3. Bg2 c5 4. O-O Nc6 5. d4 e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
1953 Opatija IT – Round 6 – Bertok, Mario Jr. – 1/2-1/2 – Unzicker, Wolfgang – G5 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 c5 5. O-O Nc6 6. d4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Be7
1958 YUG Ch sf – Round 5 – Ciric, Dragoljub M – 1/2-1/2 – Ugrinovic, Dragan – G14 1. d4 Nf6 2. Nf3 d5 3. g3 e6 4. Bg2 c5 5. O-O Nc6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 Qb6 9. dxc5 Qxc5 10. Qxc5 Bxc5
1960 Buenos Aires ch-ARG – Round 15 – Behrensen, Jorge – 1-0 – Baos Merlo, Javier – G111 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nxc6 Bxc6
1960 It Bad Salzungen GER – Round 4 – Prahov, Valentin – 1/2-1/2 – Fuchs, Reinhart – G15 1. d4 d5 2. Nf3 Nf6 3. g3 e6 4. Bg2 c5 5. O-O Nc6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 Qb6 9. dxc5 Bxc5 10. Nc3 Qb4
1960 It Bad Salzungen GER – Round 5 – Drozd, Ryszard – 1/2-1/2 – Lengyel, Levente – G22 1. Nf3 c5 2. g3 Nf6 3. Bg2 e6 4. O-O d5 5. d4 Nc6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 Qb6 9. Rd1 cxd4 10. Nxd4 Bc5
1961 Warsaw – Round 1 – Drozd, Ryszard – 0-1 – Zinn, Lothar – G71 1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O e6 5. d4 Nc6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 Na5 9. Qd3 c4 10. Qc2 Rc8
1967 ISR Ch – Round 10 – Smiltiner, Shlomo – 0-1 – Stepak, Yedael – G46 1. Nf3 c5 2. g3 Nc6 3. Bg2 Nf6 4. O-O d5 5. d4 e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
1970 IBM – Round 7 – Hartoch, Robert G – 1/2-1/2 – Ciric, Dimitrije – G13 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 dxc4 5. Qa4+ Bd7 6. Qxc4 c5 7. O-O Nc6 8. d4 cxd4 9. Nxd4 Rc8 10. Nc3 Be7
1973 Leningrad Interzonal – Round 17 – Quinteros, Miguel Angel – 1/2-1/2 – Rukavina, Josip – G138 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nxc6 Bxc6
2. Du Te Cup 2018 – Round 5.3 – Ding, Liren – 1-0 – Wojtaszek, Radoslaw – G15 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
43. Olympiad 2018 – Round 11.4 – Bluebaum, Matthias – 1/2-1/2 – Melkumyan, Hrant – G747 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
43. Olympiad 2018 – Round 9.3 – Sargissian, Gabriel – 1/2-1/2 – Harikrishna, Pentala – G595 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
5. MTel Masters 2009 – Round 8 – Shirov, Alexei – 1/2-1/2 – Wang, Yue(SH) – G19 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
84. Tata Steel Masters 2022 – Round 8.7 – Dubov, Daniil – 1/2-1/2 – Duda, Jan-Krzysztof – G54 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
FTX Crypto Cup 2022 – Round 3.3 – Giri, Anish – 1/2-1/2 – Firouzja, Alireza – G42 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
Superbet Rapid & Blitz Poland 2025 – Round 5 – Duda Jan-Krzysztof – 1/2-1/2 – Firouzja Alireza – G25 1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
Superbet Rapid & Blitz Poland 2025 – Round 7 – Deac Bogdan-Daniel – 1/2-1/2 – Gavrilescu David – G31 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4
SuperUnited Rapid 2023 – Round 8.4 – Carlsen, Magnus – 1-0 – Duda, Jacob – G39 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 Bd7 8. Qxc4 cxd4 9. Nxd4 Rc8 10. Nc3 Nxd4

E04q — Open

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 c5 6.O-O Nc6 7.Qa4 Bd7 8.Qxc4

Eval: [+0.12]

Les coups candidats

8…b5 — 56.1% (1307 parties) →

Ambassadeurs : Volodin, Viktor (11x), Inkiov, Ventzislav (10x), Radulov, Ivan (9x), Sokolov, Andrei (7x), Gulko, Boris (5x), Vladimirov, Yevgeniy (5x), Marsalek, Zdenek (5x), Haba, Petr (5x)

8…cxd4 — 31.4% (732 parties)

Ambassadeurs : Stukalov, Mikhail Vasilievich (9x), Glukhovtsev, Sergey Olegovich (5x), Ribli, Zoltan (4x), Salonen, Jukka (4x), Ljubojevic, Ljubomir (3x), Radulov, Ivan (3x), Efimov, Albert Nikolaevich (3x), Chigaev, Maksim (3x)

8…Qb6 — 6.5% (151 parties)

Ambassadeurs : Kekki, Jorma (2x), Shainswit, George (1x), Littman, G. (1x), Grechkin, Dmitry M (1x), Rauzer, Vsevolod (1x), Reti, Richard (1x), Leonhardt, Paul (1x), Levin, Mikhail (1x)

8…Rc8 — 4.0% (93 parties)

Ambassadeurs : Unzicker, Wolfgang (3x), Cserna, Laszlo (2x), Adla, Diego (2x), Karolyi, Tibor (2x), Molnar, Istvan (1x), Honfi, Gyorgy (1x), Chernin, Alexander (1x), Lindsay, Fred (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…b5	8…cxd4	8…Qb6	8…Rc8
<1800	42	48%	31%	10%	10%
1800-2200	773	51%	34%	8%	5%
2200-2600	1137	62%	29%	5%	4%
2600+	98	59%	37%	3%	1%

Évolution par décennie (% des parties)

Décennie	N parties	8…b5	8…cxd4	8…Qb6	8…Rc8
1920s	1	—	—	100%	—
1930s	1	—	100%	—	—
1940s	9	11%	56%	22%	—
1950s	20	20%	60%	5%	5%
1960s	22	55%	23%	14%	—
1970s	38	26%	58%	8%	3%
1980s	158	67%	16%	7%	8%
1990s	242	50%	32%	10%	6%
2000s	424	50%	36%	10%	3%
2010s	995	57%	31%	5%	5%
2020s	420	66%	29%	3%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…b5	57%	66%	▲ +9.7%
8…cxd4	31%	29%	▼ -2.9%
8…Qb6	5%	3%	▼ -1.9%
8…Rc8	5%	1%	▼ -3.4%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Aleksandr — 2 parties
Carlsen, Magnus — 2 parties
Anand, Viswanathan — 2 parties
Ju, Wenjun — 2 parties
Ding, Liren — 2 parties
Kramnik, Vladimir — 1 partie

Parties historiques

8…b5 — 56.1% (1307 parties)

1949 — Abrahams, Gerald vs Horne, Dennis Morton — 0-1 — Felixstowe
1951 — Lachmann, Hans G vs Hantke Rolf — 1/2-1/2 — Minden
1951 — Ivkov, Borislav vs Janosevic, Dragoljub — 1/2-1/2 — Sarajevo BIH
1956 — Krznaric, Luka vs Di Camillo, Attilio — 1/2-1/2 — Montreal CAN
1959 — Rossetto, Hector vs Ivkov, Borislav — 1/2-1/2 — Mar del Plata ARG

8…cxd4 — 31.4% (732 parties)

1939 — Reinfeld, Fred vs Mccormick Sanchez, Elliot Gael — 1/2-1/2 — Ventnor City
1944 — Pelikan, Jan vs Guimard, Carlos E — 1/2-1/2 — Mar del Plata ARG
1944 — Iliesco, Juan vs Guimard, Carlos E — 0-1 — Mar del Plata ARG
1946 — Pachman, Ludek vs Fichtl, Jiri — 1-0 — Ostrava CZE
1947 — Elstner, Rudolf vs Steneberg, Fritz — 1-0 — Berlin GER

8…Qb6 — 6.5% (151 parties)

1928 — Reti, Richard vs Leonhardt, Paul — 1/2-1/2 — Berlin GER
1940 — Shainswit, George vs Littman, G. — 1/2-1/2 — New York, NY USA
1940 — Grechkin, Dmitry M vs Rauzer, Vsevolod — 1/2-1/2 — Kiev UKR
1958 — Ciric, Dragoljub M vs Ugrinovic, Dragan — 1/2-1/2 — Tuzla
1960 — Prahov, Valentin vs Fuchs, Reinhart — 1/2-1/2 — It Bad Salzungen GER

8…Rc8 — 4.0% (93 parties)

1950 — Molnar, Istvan vs Honfi, Gyorgy — 1-0 — Budapest HUN
1971 — Gereben, Erno vs Dueckstein, Andreas — 1/2-1/2 — Birseck
1980 — Soltau, Achim vs Grzeskowiak, Antoni — 1-0 — corr DFSM
1980 — Grushka, Carlos vs Garbarino, Rodolfo — 1-0 — ARG-chJ Chacabuco
1981 — Lobron, Eric vs Toth, Balazs — 1-0 — Biel SUI

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