E03i — Catalan: Open, 5.Qa4+ Nbd7 6.Qxc4 a6 7.Nf3 b5 8.Qc2

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6 7.Nf3 b5 8.Qc2 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. O-O (Mettre le roi en sécurité, connecter les tours — 74 % des parties) ; Bg5 (Fou actif (mobilité 7), Développer c1 — 5 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Bb7 (Fou actif (mobilité 5), Développer c8 — 98 % des parties) ; ...c5 (Frapper le centre adverse — 1 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● a6→b5, f7→e6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

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

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
Non développées	4 (● b1, ● c1, ● a1, ● h1)	4 (● 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	mobile
Ruptures	● d4-d5	● …c7-c5, ● …e6-e5

Partie
1937 Kemeri – Round 1 – Flohr, Salo – 1/2-1/2 – Fine, Reuben – G43 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Nf3 a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 b4 10. O-O c5
1937 Kemeri – Round 3 – Flohr, Salo – 1/2-1/2 – Fine, Richard Alvaro Adrien – G116 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 b4 10. O-O c5
1949 Moscow RUS – Round 1 – Ravinsky, Grigory – 0-1 – Estrin, Yakov – G7 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Nf3 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. a4 Rc8
1949 URS Ch, semi final – Round 17 – Byvshev, Vasily – 1/2-1/2 – Vistaneckis, Isakas – G124 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 b5 8. Bg2 Bb7 9. O-O c5 10. dxc5 Bxc5
1950 Amsterdam – Round 5 – Szabados, Eugenio – 1/2-1/2 – Van den Berg, Carel B – G65 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Nf3 a6 7. Qxc4 b5 8. Qc2 Bb7 9. Nc3 c5 10. dxc5 Bxc5
1950 Mar del Plata – Round 16 – De Freitas, Manuela Schmitz – 0-1 – Bolbochan, J. – G136 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 b5 8. Bg2 Bb7 9. O-O Bd6 10. Nbd2 c5
1950 Szczawno Zdroj – Round 1 – Troianescu, Octav – 0-1 – Keres, Paul – G3 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 b5 8. Bg2 Bb7 9. a4 c5 10. axb5 axb5
1951 Mar del Plata zt – Round 6 – Maderna, Carlos – 0-1 – Eliskases, Erich – G50 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 b5 8. Bg2 Bb7 9. a4 c5 10. axb5 axb5
1951 Wertheim Memorial – Round 5 – Fine, Reuben – 1/2-1/2 – Byrne, Ray – G26 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. a4 Be7
1952 POL-ch10 – Round 1 – Ciejka, Tadeusz – 0-1 – Makarczyk, Kazimierz – G3 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Qa4+ Nbd7 5. Qxc4 e6 6. g3 a6 7. Bg2 b5 8. Qc2 Bb7 9. a4 c5 10. axb5 axb5
1952 YUG Ch – Round 14 – Vukovic, Sava – 1-0 – Djaja, Dragutin – G20 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. Nf3 dxc4 6. Qa4 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O Rc8 10. Nc3 c5
1953 Hastings ch-BCF – Round 8 – Golombek, Harry – 0-1 – Aabel Thomas Eapen – G77 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 c5 9. O-O Bb7 10. a4 Rc8
1953 Mar del Plata – Round 1 – Rossetto, Hector – 1/2-1/2 – Medina-Garcia, Antonio – G9 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. Nbd2 Rc8
1954 Mar del Plata/B.Aires zt it-17 – Round 20 – Castillo Larenas, Mariano – 1/2-1/2 – Panno, Oscar – G19 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Nf3 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. a4 Qb6
1955 Buenos Aires CA – Round 10 – Alvarez Martin, Pedro – 1/2-1/2 – Benko, Francisco – G69 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. a4 Rc8
1962 Clare Benedict Cup 09th – Round 2 – Kottnauer – 1/2-1/2 – Unzicker, Ferdinand, Dr. – G6 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. Nbd2 Rc8
1963 CAN Ch – Round 15 – Macskasy, Elod – 0-1 – Fuster, Geza – G21 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Qa4+ Nbd7 5. g3 a6 6. Qxc4 e6 7. Bg2 b5 8. Qc2 Bb7 9. O-O c5 10. b3 Rc8
1964 Tel Aviv olm fin-A – Round 6 – Janowski, D. – 1/2-1/2 – Pachman, Ludek – G125 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. dxc5 Bxc5
1964 Tel Aviv olm fin-B – Round 13 – Jakobsen, Ole – 1/2-1/2 – Rodriguez Vargas, Orestes – G152 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Nf3 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. dxc5 Bxc5
1965 Pardubice – Round 1 – Opocensky, Karel – 1/2-1/2 – Hora, Vratislav – G3 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. a4 Rc8
1965 Santiago – Round ? – Jimenez Zerquera, Eleazar – 1/2-1/2 – Schroeder, Raik – G27 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Nf3 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. dxc5 Bxc5
1965 Tbilisi – Round 1 – Navarovszky, Laszlo – 0-1 – Kolarov, Atanas S. – G30 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. a4 b4
1967 Moscow – Round 1 – Smyslov, Vladimir – 1/2-1/2 – Keres, Paul – G37 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Nf3 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. a4 cxd4
1968 HUN-JUG – Round 1 – Iliev Ivanov, Andrey – 1/2-1/2 – Szabo, Ladislav – G3 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6 7. Qxc4 b5 8. Qc2 Bb7 9. O-O c5 10. a4 Be7

E03i — Open (1937)

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6 7.Nf3 b5 8.Qc2

Les coups candidats

8…Bb7 — 98.5% (667 parties)

Ambassadeurs : Meijers, Viesturs (6x), Hou, Yifan (3x), Van den Berg, Carel B (2x), Aznar De Oriol, Luis (2x), Huebner, Robert (2x), Unzicker, Ferdinand, Dr. (2x), Baumgartner, Walter (2x), Lukacs, Peter (2x)

8…c5 — 1.3% (9 parties)

Ambassadeurs : Golombek, Harry (1x), Aabel Thomas Eapen (1x), Akopov, Roman (1x), Bykhovsky, Avigdor (1x), Glowatzky, Tihomir (1x), Schroll, Ralph, Dr. (1x), Grigoryan, Meri (1x), Petrosian, Tigran A. (1x)

8…Ra7 — 0.1% (1 parties)

Ambassadeurs : Korbal, Arkadiusz (1x), Graf, Pawel (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…Bb7	8…c5	8…Ra7
<1800	25	92%	8%	—
1800-2200	232	99%	0%	0%
2200-2600	356	99%	1%	—
2600+	1	100%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	8…Bb7	8…c5	8…Ra7
1950s	14	93%	7%	—
1960s	12	100%	—	—
1970s	17	100%	—	—
1980s	32	94%	6%	—
1990s	76	99%	1%	—
2000s	136	99%	1%	—
2010s	263	99%	1%	0%
2020s	127	99%	1%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…Bb7	99%	99%	+0.4%
8…c5	1%	1%	+0.0%
8…Ra7	0%	0%	-0.4%

Joueurs célèbres

Champions du monde dans cette position

Hou, Yifan — 3 parties

Parties historiques

8…Bb7 — 98.5% (667 parties)

1950 — De Freitas, Manuela Schmitz vs Bolbochan, Jacobo — 0-1 — Mar del Plata ARG
1950 — Troianescu, Octav vs Keres, Paul — 0-1 — Szczawno Zdroj
1950 — Eugenio, Sarah De Oliveira vs Van den Berg, Carel B — 1/2-1/2 — Amsterdam NED
1951 — Fine, Reuben vs Byrne, Ray — 1/2-1/2 — New York, NY USA
1951 — Maderna, Carlos vs Eliskases, Erich — 0-1 — Mar del Plata ARG

8…c5 — 1.3% (9 parties)

1953 — Golombek, Harry vs Aabel Thomas Eapen — 0-1 — Hastings ch-BCF
1988 — Akopov, Roman vs Bykhovsky, Avigdor — 1/2-1/2 — USSR Tch-9 bd2
1989 — Glowatzky, Tihomir vs Schroll, Ralph, Dr. — 0-1 — corr GER/H01
1996 — Grigoryan, Meri vs Petrosian, Tigran A. — 1/2-1/2 — Erevan ARM
2001 — Prodileanu, Adrian vs Anitoaie, Dumitru — 1/2-1/2 — Sovata

8…Ra7 — 0.1% (1 parties)

2012 — Korbal, Arkadiusz vs Graf, Pawel — 1-0 — Police POL

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