E04o — Catalan: Open, 5.Nf3 c5 6.O-O Nc6 7.Qa4 cxd4

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 c5 6.O-O Nc6 7.Qa4 cxd4 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Nxd4 (Cavalier centralisé en d4 — 89 % des parties) ; Ne5 (Cavalier centralisé en e5 — 6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...Bd7 (Développer c8 — 12 % des parties) ; ...Nd5 (Cavalier centralisé en d5 — 2 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● f7→e6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● g5 (2v0)	● b4 (2v1), ● d5 (3v0)
Cases faibles	● d4	—
Centre	—	● d4 (2v1), ● d5 (3v0), ● e4 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c, ● d	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Ok (mob. 2)
Bc8		● Bc8 Non développé (mob. 1)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Clouages	—	● knight c6
Non développées	3 (● b1, ● c1, ● a1)	4 (● c8, ● 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	mobile
Ruptures	● e2-e3	● …c4-c3, ● …d4-d3

Partie
1937 Bad Elster – Round 2 – Pelikan, Jorge – 1/2-1/2 – Acebey Michel, Veroska – G7 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 dxc4 7. Qa4 cxd4 8. Nxd4 Qxd4 9. Bxc6+ Bd7 10. Rd1 Bxc6
1953 Bariloche – Round 1 – Alvarez Martin, Pedro – 1-0 – Shocron, Ruben – G10 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 c5 6. O-O Nc6 7. Qa4 cxd4 8. Nxd4 Qxd4 9. Bxc6+ Bd7 10. Rd1 Bxc6
1953 POL-ch11 – Round 17 – Doda, Zbigniew – 1-0 – Grabczewski, Romuald – G107 1. d4 e6 2. Nf3 Nf6 3. g3 c5 4. Bg2 Nc6 5. O-O d5 6. c4 dxc4 7. Qa4 cxd4 8. Rd1 Bc5 9. Ne5 Bd7 10. Nxd7 Nxd7
1968 Lugano olm - Round 1 - Toran Albero, Roman - 1-0 - Myagmarsuren, Lkhamsuren - G337 1. d4 d5 2. Nf3 e6 3. g3 c5 4. Bg2 Nc6 5. O-O Nf6 6. c4 dxc4 7. Qa4 cxd4 8. Nxd4 Bd7 9. Nxc6 Bxc6 10. Bxc6+ bxc6
Candidats Tournament 1985 – Round 8 – Vaganian, Rafael A – 1/2-1/2 – Ribli, Zoltan – G48 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 cxd4 8. Nxd4 Qxd4 9. Bxc6+ Bd7 10. Rd1 Qxd1+
La Valetta MLT 1980 – Round 11 – Smejkal, Jan – 1/2-1/2 – Ribli, Zoltan – G16 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 c5 6. O-O Nc6 7. Qa4 cxd4 8. Nxd4 Qxd4 9. Bxc6+ Bd7 10. Rd1 Qxd1+
Moscow 1981 – Round 1 – Polugaevsky, Lev – 1/2-1/2 – Andersson, Ulf 1949 – G11 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Qa4 cxd4 8. Nxd4 Qxd4 9. Bxc6+ Bd7 10. Rd1 Qxd1+
Niksic 1983 – Round 12 – Kasparov, Garry – 1/2-1/2 – Andersson, Ulf 1949 – G76 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 c5 6. O-O Nc6 7. Qa4 cxd4 8. Nxd4 Qxd4 9. Bxc6+ Bd7 10. Rd1 Qxd1+
Niksic 1983 – Round 12 – Kasparov, Garry – 1/2-1/2 – Andersson, Ulf 1949 – G78 1. d4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 c5 5. O-O Nc6 6. c4 dxc4 7. Qa4 cxd4 8. Nxd4 Qxd4 9. Bxc6+ Bd7 10. Rd1 Qxd1+
World Blitz 2023 – Round 1.55 – Dardha, Daniel – 1-0 – Wanyama, Harold – G52 1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O Nc6 5. d4 e6 6. c4 dxc4 7. Qa4 cxd4 8. Nxd4 Qxd4 9. Bxc6+ Bd7 10. Rd1 Bxc6

E04o — Open (1937)

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 c5 6.O-O Nc6 7.Qa4 cxd4

Les coups candidats

8.Nxd4 — 88.9% (473 parties)

Ambassadeurs : Andersson, Ulf (3x), Polovodin, Igor A (3x), Hjartarson, Johann (3x), Palatnik, Semon (3x), Stern, Andrei R (3x), Kasparov, Garry (2x), Findlay, Ian T. (2x), Krstev, Krum (2x)

8.Ne5 — 5.8% (31 parties)

Ambassadeurs : Gurieli, Nino (1x), Fatalibekova, Elena (1x), Busch, Raimund (1x), Schmittdiel, Eckhard (1x), Goy, Udo (1x), Federau, Juergen (1x), De Fotis, Gregory (1x), Tautvaisas, Povilas (1x)

8.Rd1 — 3.2% (17 parties)

Ambassadeurs : Weih, Klaus (2x), Volchok, Alexandr (1x), Lenchiner, Izia (1x), Doda, Zbigniew (1x), Grabczewski, Romuald (1x), Boehm, Gerhard (1x), Becker, Leif (1x), Pacey, Kevin (1x)

8.Qxc4 — 2.1% (11 parties)

Ambassadeurs : Calvo Sanchez, Jesus Maria (1x), Miralles Andreu, David (1x), Bottino, Alexiei (1x), Contini, Gabriele (1x), Weiler, Wolfgang (1x), Stiepan, Hans-Michael (1x), Ropokis, Dimitrios (1x), Kasznia, Ireneusz (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.Nxd4	8.Ne5	8.Rd1	8.Qxc4
<1800	20	80%	10%	—	10%
1800-2200	195	87%	7%	4%	2%
2200-2600	235	92%	5%	2%	2%
2600+	10	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	8.Nxd4	8.Ne5	8.Rd1	8.Qxc4
1950s	3	67%	—	33%	—
1960s	3	67%	—	33%	—
1970s	21	90%	10%	—	—
1980s	78	94%	3%	3%	1%
1990s	56	88%	5%	7%	—
2000s	138	93%	4%	2%	1%
2010s	184	89%	5%	2%	4%
2020s	49	73%	20%	4%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Nxd4	89%	73%	▼ -15.7%
8.Ne5	5%	20%	▲ +15.5%
8.Rd1	2%	4%	▲ +1.9%
8.Qxc4	4%	2%	▼ -1.8%

Joueurs célèbres

Champions du monde dans cette position

Kasparov, Garry — 2 parties

Parties historiques

8.Nxd4 — 88.9% (473 parties)

1953 — Weiss, Martin vs Shocron, Ruben — 1-0 — Bariloche
1957 — Wachs, Otto Rauber vs Levy, Louis — 1-0 — New York, NY USA
1965 — Pomar Salamanca, Arturo vs Palacios de la Prida, Ernesto — 1-0 — Malaga ESP
1968 — Toran Albero, Roman vs Myagmarsuren, Lkhamsuren — 1-0 — Lugano olm
1972 — Hartoch, Robert G vs Ivkov, Borislav — 1/2-1/2 — Wijk aan Zee NED

8.Ne5 — 5.8% (31 parties)

1972 — De Fotis, Gregory vs Tautvaisas, Povilas — 1-0 — Chicago, IL USA
1978 — Busch, Raimund vs Schmittdiel, Eckhard — 1/2-1/2 — Hohenlimburg
1985 — Gurieli, Nino vs Fatalibekova, Elena — 1-0 — Erevan ARM
1985 — Goy, Udo vs Federau, Juergen — 1-0 — ?
1994 — Nemec, Otakar vs Smajzr, Martin — 1/2-1/2 — Czech League

8.Rd1 — 3.2% (17 parties)

1953 — Doda, Zbigniew vs Grabczewski, Romuald — 1-0 — Krakow POL
1960 — Volchok, Alexandr vs Lenchiner, Izia — 0-1 — ?
1984 — Becker, Leif vs Pacey, Kevin — 0-1 — Scarborough CAN
1988 — Boehm, Gerhard vs Weih, Klaus — 0-1 — Wurtemberg
1996 — Herlemann, Bernhard vs Weih, Klaus — 0-1 — Baden

8.Qxc4 — 2.1% (11 parties)

1989 — Calvo Sanchez, Jesus Maria vs Miralles Andreu, David — 1-0 — ?
2003 — Bottino, Alexiei vs Contini, Gabriele — 1/2-1/2 — Bratto ITA
2007 — Weiler, Wolfgang vs Stiepan, Hans-Michael — 0-1 — Gerlingen
2010 — Gajarsk Jakub vs Lis, Jan — 1-0 — ?
2010 — Turov, Vladimir vs Grigoriev, Valery — 1/2-1/2 — Perm RUS