A13v — English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.O-O

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.O-O ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

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

Côté adverse. Les fous enfermés en c8 et f8, le roi resté au centre et une pièce en prise (le pion en c4).

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

Plans. Nc3 (Développer Nb1) ; d3 (Libérer Bc1) ; h3 (Empêcher ...Bg4) ; Tour sur colonne c.

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur une majorité de pions à l'aile_dame (4 contre 2), les cases fortes c5 et 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 (les fous c8 et f8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; b6+Bb7 (PRIORITÉ: libérer le Bc8 (b6+Bb7, ...Bg4, ...Bf5)) ; ...Be7 (Développer Bf8) ; ...Bg4 (Clouer Nf3) ; ...c6 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	● c4, ● c7
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● f7→e6
Passés	—	—
Majorité	● centre 2v1	● aile_dame 4v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● c5 (2v0), ● d5 (2v0)
Cases faibles	—	—
Centre	● d4 (1v0)	● d5 (2v0), ● e4 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Clouages	—	● knight d7
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	semi-ouvert
Ruptures	● d2-d3, ● d2-d4, ● e2-e3	● …c7-c6, ● …c7-c5, ● …e6-e5

Partie
1925 Marienbad – Round 11 – De La Torre Huertas, Carlos – 1/2-1/2 – Tartakower, Savielly – G73 1. Nf3 d5 2. c4 e6 3. g3 dxc4 4. Bg2 Nd7 5. Qa4 Nf6 6. O-O Be7 7. Na3 O-O 8. Nxc4 c5 9. d3 a6 10. Nce5 Bd6
1927 Homburg – Round 1 – Reti, Richard – 0-1 – Bogoljubow, Efim – G5 1. Nf3 d5 2. c4 e6 3. g3 dxc4 4. Qa4+ Nd7 5. Bg2 Nf6 6. O-O Bd6 7. Na3 Bxa3 8. bxa3 O-O 9. Qxc4 Nb6 10. Qc2 Bd7
1928 Vienna – Round 3 – Reti, Richard – 1/2-1/2 – Gruenfeld, Ernst – G27 1. c4 e6 2. Nf3 d5 3. g3 dxc4 4. Qa4+ Nd7 5. Bg2 Nf6 6. O-O Be7 7. Qxc4 c5 8. b3 a6 9. Qc2 Nd5 10. Bb2 Bf6
1933 Folkestone ol (Men) – Round 14.4 – Nielsen, Julius – 0-1 – ? – G10 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. O-O dxc4 6. Qa4 Bd6 7. Qxc4 O-O 8. d4 e5 9. dxe5 Nxe5 10. Nxe5 Bxe5
1939 Stuttgart – Round 3 – Bogoljubow, Efim – 1-0 – Hess, Thomas – G16 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 dxc4 5. O-O Nbd7 6. Qa4 a6 7. Qxc4 b5 8. Qc6 Rb8 9. Qc2 c5 10. b3 Bb7
1941 Absolute Championship – Round 2 – Smyslov, Vladimir – 1/2-1/2 – Bondarevsky, Igor – G6 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. O-O Nbd7 6. Qa4 a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 b4 10. a5 Be7
1944 Brno ch CZE – Round 12 – Katetov, Miroslav – 0-1 – Foltys, Jan – G19 1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O Bd6 7. Qxc4 e5 8. d4 O-O 9. dxe5 Nxe5 10. Nxe5 Bxe5
1948 South Fallsburg ch-USA – Round 1 – Steiner, Heinrich Jun. – 1/2-1/2 – Shainswit, George – G144 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 b5 8. Qc2 Bb7 9. b3 c5 10. Bb2 Rc8
1949 AUT-CSR Vienna AUT – Round 1 – Foltys, Jan – 1/2-1/2 – Lokvenc, Josef – G6 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O c6 7. Qxc4 Bd6 8. Nc3 e5 9. d3 O-O 10. b4 Nb6
1949 URS Ch, semi final – Round 1 – Kopaev, Nikolay A – 1/2-1/2 – Bannik, Anatolij – G1 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. O-O Nbd7 6. Qa4 a6 7. Nc3 Rb8 8. Qxc4 Be7 9. a4 O-O 10. d4 Nb6
1950 HUN-ch06 – Round 1 – Koberl, Ferenc – 0-1 – Szily, Jozsef – G8 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 dxc4 5. O-O Nbd7 6. Qa4 a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 c5 10. axb5 axb5
1951 Marianske Lazne zt – Round 1 – Barcza, Gedeon – 1/2-1/2 – Benko, Pal – G5 1. c4 e6 2. g3 d5 3. Bg2 dxc4 4. Qa4+ Nd7 5. Nf3 Nf6 6. O-O a6 7. Qxc4 b5 8. Qc2 Bb7 9. b3 c5 10. Bb2 Be7
1952 Budapest – Round 2 – Smyslov, Vladimir – 1/2-1/2 – Szily, Jozsef – G20 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Nbd7 5. O-O dxc4 6. Qa4 a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 c5 10. axb5 axb5
1955 CSR Ch – Round 14 – Pithart, Frantisek – 1/2-1/2 – Betak Miroslav – G106 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O Be7 7. Qxc4 c5 8. b3 O-O 9. Bb2 Nd5 10. d4 N7b6
1956 Marianske Lazne/Praha – Round 16 – Pithart, Frantisek – 1-0 – Uhlmann, Wolfgang – G45 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Nc3 Be7 8. Qxc4 c5 9. d3 O-O 10. a4 b6
1956 Moscow olm prel – Round 7 – Larsen, Benjamin Holsko – 1-0 – Prins, Laura – G242 1. Nf3 Nf6 2. g3 d5 3. Bg2 Nbd7 4. c4 dxc4 5. Qa4 e6 6. O-O Be7 7. Qxc4 c5 8. d4 O-O 9. Rd1 a6 10. Qc2 Ra7
1957 Bratislava Bratislava SVK – Round 7 – Sandor, Bela – 1/2-1/2 – Sefc, Jan – G29 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 c5 8. Qc2 b5 9. a4 Bb7 10. axb5 axb5
1957 FRG Ch Bad Neuenahr – Round 6 – Lehmann, Heinz – 1-0 – Flad – G17 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 c5 10. axb5 axb5
1958 BUL Ch – Round ? – Filchev, Rusko – 1-0 – Padevsky, Nikola – G7 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 dxc4 5. O-O Nbd7 6. Qa4 a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 c5 10. axb5 axb5
1958 Sarajevo ch YUG – Round 6 – Sofrevski, Jovan – 1/2-1/2 – Karaklajic, Nikolas – G8 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 c5 8. Qc2 b6 9. Nc3 Bb7 10. Rd1 Rc8
1961 Clare Benedict Cup 08th – Round 3.1 – Langeweg, Kick – 1-0 – Bialas, Wolfram – G20 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 c5 8. Qc2 Qc7 9. d4 b6 10. Bf4 Bd6
1962 Vrnjacka Banja – Round 1 – Rabar, Braslav – 0-1 – Karaklajic, Nikola – G3 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. O-O Be7 7. Qxc4 O-O 8. d4 c5 9. dxc5 Bxc5 10. Nc3 a6
1963 POL Ch 20th – Round 9 – Plater, Kazimierz – 1-0 – Gadalinski, Jan – G53 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O c5 7. Qxc4 a6 8. Qc2 Bd6 9. a4 O-O 10. Na3 Nb6
1965 Leipzig Inter-1 – Round 10 – Pietzsch, Wolfgang – 1/2-1/2 – Hennings, Artur – G40 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Nbd7 5. c4 dxc4 6. Qa4 a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 c5 10. axb5 axb5
1965 Novi Sad – Round 1 – Bertok, Mario Jr. – 1/2-1/2 – Ciric, Dragoljub M – G3 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 c5 10. d3 Bd6
1966 URS Team Ch – Round ? – Geller, Efim P – 1-0 – Chernikov, Oleg L – G3 1. c4 e6 2. g3 Nf6 3. Bg2 d5 4. Nf3 dxc4 5. O-O Nbd7 6. Qa4 a6 7. Qxc4 c5 8. Qc2 e5 9. Na3 Bd6 10. Nc4 Bc7
1968 Cardenas/Matanzas/Santa Clara – Round 13 – Jimenez Zerquera, Eleazar – 1/2-1/2 – Letelier Martner, Rene – G68 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. c4 dxc4 5. O-O Nbd7 6. Qa4 Be7 7. Na3 O-O 8. Nxc4 c5 9. d3 Nd5 10. a3 a6
1968 Hoogovens – Round 9 – Tal, Mikhail – 1/2-1/2 – Karaklajic, Nikola – G82 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. O-O Nbd7 6. Qa4 Be7 7. Qxc4 O-O 8. d4 c5 9. Rd1 a6 10. Qc2 Ra7
1969 Budapest ch-HUN – Round 1 – Adorjan, Andras – 0-1 – Csom, Istvan – G9 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Nbd7 5. O-O dxc4 6. Qa4 a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 c5 10. axb5 axb5
1969 Hoogovens – Round 11 – Lombardy, William J – 1/2-1/2 – Olafsson, Fridrik – G90 1. g3 Nf6 2. c4 e6 3. Nf3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 Be7 10. axb5 axb5
1969 Moscow – Round 1 – Ignatiev, Felix N – 1-0 – Murey, Jacob – G2 1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 b5 8. Qc2 Bb7 9. a4 Bd6 10. Nc3 b4
1972 San Antonio – Round 1 – Suttles, Duncan – 1/2-1/2 – Keres, Paul – G9 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Nc3 c5 8. Ne5 Rb8 9. Nxd7 Qxd7 10. Qxc4 b5
1972 San Antonio – Round 7 – Suttles, Duncan – 1/2-1/2 – Keres, Paul – G8 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Nc3 c5 8. Ne5 Rb8 9. Nxd7 Qxd7 10. Qxc4 b5
1975 URS Team Ch – Round 1 – Tukmakov, Vladimir B – 1/2-1/2 – Balashov, Yuri S – G30 1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 b5 8. Qc2 Bb7 9. b3 c5 10. Bb2 Be7
1975 URS Team Ch – Round 4 – Mochalov, Evgeny V – 1/2-1/2 – Taimanov, Mark – G561 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 b5 8. Qc6 Rb8 9. Qc2 Bb7 10. d3 Be7
Interpolis 1985 – Round 1 – Miles, Anthony J – 1-0 – Timman, Jan H – G35 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 c5 8. Qb3 Bd6 9. a4 O-O 10. Na3 Nb8
Linares 1981 – Round 1 – Quinteros, Miguel Angel – 0-1 – Portisch, Lajos – G22 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. O-O Nbd7 6. Qa4 a6 7. Qxc4 b5 8. Qc2 Bb7 9. d4 c5 10. e3 Rc8
Manila Interzonal 1990 – Round 10 – Damljanovic, Branko – 1/2-1/2 – Korchnoi, Viktor – G175 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O a6 7. Qxc4 b5 8. Qc2 Bb7 9. d3 c5 10. b3 Be7
Mar del Plata 1982 – Round 1 – Najdorf, Miguel – 1/2-1/2 – Polugaevsky, Lev – G55 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O c5 7. Qxc4 b6 8. b3 Bb7 9. Bb2 Be7 10. Qc2 O-O
SuperUnited Blitz 2023 – Round 18.4 – Firouzja, Alireza – 1-0 – Duda, Jacob – G89 1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 dxc4 5. O-O Nbd7 6. Qa4 a6 7. Nc3 c5 8. Rd1 Be7 9. Qxc4 b5 10. Qb3 Bb7
Tilburg NED 1983 – Round 1 – Karpov, Anatoly – 1/2-1/2 – Ljubojevic, Ljubomir – G1 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. O-O c5 7. Qxc4 b6 8. d4 Bb7 9. Nc3 a6 10. dxc5 b5
World Blitz 2017 – Round 7.22 – Howell, David W L – 1/2-1/2 – Melkumyan, Hrant – G353 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. O-O Nbd7 6. Qa4 a6 7. Qxc4 b5 8. Qc2 Bb7 9. d3 c5 10. Nc3 Be7

A13v — Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.O-O

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.O-O

Eval: [-0.15]

Les coups candidats

6…a6 — 72.1% (573 parties)

Ambassadeurs : Pavasovic, Dusko (3x), Benko, Francisco (3x), Zak, Uriel (3x), Kucera, Petr (3x), Klovans, Janis (3x), Olafsson, Fridrik (3x), Bachmann, Axel (3x), Wegerle, Joerg (3x)

6…c5 — 18.0% (143 parties)

Ambassadeurs : Pountzas, Hrisanthos (2x), Averkin, Orest (2x), Karlsson, Lars 1937 (2x), Spiridonov, Nikola (2x), Karpov, Anatoly (2x), Szymczak, Zbigniew (2x), Koenig, Bernhard (2x), Burrows, Martin P (2x)

6…Be7 — 5.0% (40 parties)

Ambassadeurs : Karaklajic, Nikola (3x), Tal, Mikhail (2x), Reti, Richard (1x), Gruenfeld, Ernst (1x), De La Torre Huertas, Carlos (1x), Tartakower, Savielly (1x), Rabar, Braslav (1x), Pithart, Frantisek (1x)

6…Bd6 — 2.1% (17 parties)

Ambassadeurs : Katetov, Miroslav (1x), Foltys, Jan (1x), Reti, Richard (1x), Bogoljubow, Efim (1x), Nielsen, Julius (1x), ? (1x), Roizman, Abram Y (1x), Moehring, Guenther (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…a6	6…c5	6…Be7	6…Bd6
<1800	7	57%	14%	14%	—
1800-2200	150	71%	12%	9%	4%
2200-2600	546	73%	21%	3%	1%
2600+	8	62%	38%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	6…a6	6…c5	6…Be7	6…Bd6
1920s	3	—	—	67%	33%
1930s	2	50%	—	—	50%
1940s	7	71%	—	—	14%
1950s	12	83%	—	17%	—
1960s	19	63%	5%	26%	5%
1970s	41	73%	27%	—	—
1980s	74	55%	34%	7%	3%
1990s	126	71%	20%	3%	1%
2000s	175	70%	21%	4%	3%
2010s	264	77%	15%	5%	2%
2020s	72	83%	7%	4%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…a6	77%	83%	▲ +6.8%
6…c5	15%	7%	▼ -8.2%
6…Be7	5%	4%	-0.4%
6…Bd6	2%	0%	▼ -1.9%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 3 parties
Tal, Mikhail — 3 parties
Karpov, Anatoly — 2 parties
Botvinnik, Mikhail — 1 partie

Parties historiques

6…a6 — 72.1% (573 parties)

1939 — Bogoljubow, Efim vs Hess, Thomas — 1-0 — Stuttgart GER
1941 — Smyslov, Vasily vs Bondarevsky, Igor — 1/2-1/2 — URS-ch
1941 — Smyslov, Vladimir vs Bondarevsky, Igor — 1/2-1/2 — Leningrad/Moscow
1942 — Vulfson, Vladimir vs Finogenov, Dmitrii — 0-1 — Kuibyshev
1948 — Steiner, Heinrich Jun. vs Shainswit, George — 1/2-1/2 — South Fallsburg ch-USA

6…c5 — 18.0% (143 parties)

1963 — Plater, Kazimierz vs Gadalinski, Jan — 1-0 — Glucholazy
1976 — Palacios Lanza, Antonio vs Rooze, Jan — 0-1 — Haifa ISR
1976 — Grigoryan, Karen A. vs Dorfman, Iossif — 1/2-1/2 — Moskou ch-URS
1976 — Szymczak, Zbigniew vs Nowak, Ignacy — 1/2-1/2 — Bydgoszcz POL
1977 — Lengyel, Laszlo vs Ribli, Zoltan — 1/2-1/2 — Budapest ch-HUN

6…Be7 — 5.0% (40 parties)

1925 — De La Torre Huertas, Carlos vs Tartakower, Savielly — 1/2-1/2 — Marienbad CZE
1928 — Reti, Richard vs Gruenfeld, Ernst — 1/2-1/2 — Vienna AUT
1955 — Pithart, Frantisek vs Betak Miroslav — 1/2-1/2 — Prague CZE
1956 — Larsen, Benjamin Holsko vs Prins, Laura — 1-0 — Moscow RUS
1962 — Rabar, Braslav vs Karaklajic, Nikola — 0-1 — Vrnjacka Banja SRB

6…Bd6 — 2.1% (17 parties)

1927 — Reti, Richard vs Bogoljubow, Efim — 0-1 — Homburg
1933 — Nielsen, Julius vs ? — 0-1 — Folkestone ENG
1944 — Katetov, Miroslav vs Foltys, Jan — 0-1 — Brno ch CZE
1967 — Roizman, Abram Y vs Moehring, Guenther — 1/2-1/2 — Berlin East
1981 — Gerigk, Wolf vs Cygielman, M. — 0-1 — Germany North

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