A13w — English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.Qxc4 c5

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 c5 ○ Trait aux Blancs

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 — 46 % des parties) ; Qb3 (Prépare O-O-O — 22 % des parties) ; d3 (Solidifier le centre — 18 % des parties) ; Qc2 (Prépare O-O-O — 8 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...b6 (Préparer le fianchetto — 32 % des parties) ; ...a6 (Préparer expansion aile dame — 27 % des parties) ; ...Rb8 (16 % des parties) ; ...Bd6 (Fou actif (mobilité 7), Développer f8 — 14 % des parties) ; ...Be7 (Développer f8 — 7 % 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)	● d5 (2v1)
Cases faibles	—	—
Centre	● d4 (2v1)	● d5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Ok (mob. 2)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 2)
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	● d2-d4	—

Partie
19. Amber Blindfold 2010 – Round 8 – Aronian, Levon – 1/2-1/2 – Gelfand, Boris – G27 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O b6 8. d4 Bb7 9. Rd1 cxd4 10. Bg5 Be7
19. European Teams 2013 – Round 4.11 – Swiercz, Dariusz – 1/2-1/2 – Pavasovic, Dusko – G139 1. c4 e6 2. Nf3 d5 3. g3 dxc4 4. Qa4+ Nd7 5. Bg2 Nf6 6. Qxc4 c5 7. O-O b6 8. Ng5 Rb8 9. d3 h6 10. Ne4 Nxe4
1948 BRD Ch – Round 6 – Troeger, Paul – 0-1 – Sahlmann, Walter – G4 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O a6 8. a4 b5 9. Qb3 c4 10. Qc2 Bb7
1949 Trencianske Teplice – Round 8 – Richter, Edgar – 1-0 – Szily, Jozsef – G42 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O a6 8. Qc2 b5 9. a4 Bb7 10. axb5 axb5
1951 Moskou ch-URS – Round 1 – Smyslov, Vladimir – 1-0 – Taimanov, Mark E – G7 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O a6 8. Qb3 Be7 9. d3 O-O 10. Bd2 Qc7
1960 Budapest zt – Round 6 – Barcza, Gedeon – 1-0 – Clarke, Peter H – G34 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O a6 8. Qc2 Bd6 9. d4 O-O 10. Nbd2 cxd4
1967 It II – Round 6 – Ujtelky, Maximilian – 1/2-1/2 – Karaklajic, Nikola – G14 1. c4 e6 2. g3 d5 3. Bg2 dxc4 4. Qa4+ Nd7 5. Qxc4 Ngf6 6. Nf3 c5 7. O-O a6 8. Qc2 b6 9. b3 Bb7 10. Bb2 Be7
4. Norway Blitz 2016 – Round 8.3 – Grandelius, Nils – 0-1 – Harikrishna, Pentala – G37 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qc2 Rb8 8. O-O b6 9. d4 Bb7 10. Rd1 Rc8
40. Olympiad Open 2012 – Round 6.16 – Kasimdzhanov, Rustam – 1/2-1/2 – Leitao, Rafael – G355 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. d3 Bd6 8. O-O a6 9. Qc2 Rb8 10. d4 Qc7
41. Olympiad Open 2014 – Round 8.27 – Kovalyov, Anton – 1/2-1/2 – Ladva, Ottomar – G571 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. d3 Bd6 8. a4 O-O 9. Nc3 a6 10. a5 Qc7
42. Olympiad 2016 – Round 7.18 – Blomqvist, Erik – 1/2-1/2 – Bruzon Batista, Lazaro – G489 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qc2 b6 8. Nc3 Bb7 9. O-O Rc8 10. Rd1 a6
Bugojno 1980 – Round 6 – Andersson, Ulf 1949 – 1/2-1/2 – Tal, Mikhail – G21 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O b6 8. d4 Bb7 9. Nc3 a6 10. dxc5 Bxc5
Erevan ch-URS 1975 – Round 1 – Dorfman, Iossif – 1/2-1/2 – Tal, Mikhail – G37 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qc2 b6 8. O-O Bb7 9. Nc3 Be7 10. d4 cxd4
Erevan ch-URS 1975 – Round 1 – Romanishin, Oleg M – 1-0 – Polugaevsky, Lev – G6 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O a6 8. a4 b5 9. Qb3 Bb7 10. d3 Bd5
FIDE World Cup 2015 – Round 3.1 – Grischuk, Alexander – 0-1 – Eljanov, Pavel – G317 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O b6 8. Nc3 Bb7 9. d4 Rc8 10. Qd3 cxd4
FIDE World Cup 2015 – Round 4.3 – Jakovenko, Dmitry – 1/2-1/2 – Eljanov, Pavel – G389 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. d3 Bd6 8. a4 O-O 9. Nc3 b6 10. Nb5 Ba6
FIDE World Rapid 2014 – Round 9.25 – Sargissian, Gabriel – 1/2-1/2 – Riazantsev, Alexander – G184 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qc2 Rb8 8. Nc3 b5 9. d3 Bd6 10. O-O O-O
FIDE World Rapid Championship 2025 – Round 3 – David Anton Guijarro – 1-0 – Ediz Gurel – G53 1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. d3 Be7 8. O-O O-O 9. a4 Nb6 10. Qb3 Nbd5
Interpolis 1993 – Round 2 – Lautier, Joel – 0-1 – Yermolinsky, Alex – G72 1. c4 e6 2. g3 Nf6 3. Bg2 d5 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O b6 8. Nc3 Bb7 9. e4 Rc8 10. Qe2 Bd6
La Valetta MLT 1980 – Round 1 – Ribli, Zoltan – 1/2-1/2 – Polugaevsky, Lev – G7 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O b6 8. d4 Bb7 9. Nc3 Rc8 10. Rd1 a6
Leningrad ch-URS 1977 – Round 1 – Tal, Mikhail – 0-1 – Polugaevsky, Lev – G39 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O b6 8. Nd4 Ne5 9. Nc6 Nxc4 10. Nxd8 Nd5
Lindores Abbey Tal Memorial 2021 – Round 4.11 – Niemann, Hans Moke – 1-0 – Sjugirov, Sanan – G170 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qc2 Bd6 8. O-O O-O 9. Nc3 a6 10. d4 cxd4
London P&D/GLC Kings 1984 – Round 1 – Vaganian, Rafael A – 1/2-1/2 – Andersson, Ulf 1949 – G10 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qb3 Be7 8. O-O O-O 9. Nc3 a6 10. d3 Ra7
Milaan 1975 – Round 10 – Smejkal, Jan – 1/2-1/2 – Tal, Mikhail – G34 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qc2 b6 8. O-O Bb7 9. Nc3 Be7 10. d4 cxd4
Moskou ch-URS 1973 – Round 12 – Polugaevsky, Lev – 1/2-1/2 – Keres, Paul – G74 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qc2 b6 8. O-O Bb7 9. Nc3 Be7 10. d4 cxd4
Moskou ch-URS 1988 – Round 1 – Ehlvest, Jaan – 1/2-1/2 – Gurevich, Mikhail – G65 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qb3 Rb8 8. d3 Bd6 9. O-O O-O 10. Nc3 a6
Moskou ch-URS 1988 – Round 12 – Vaganian, Rafael A – 0-1 – Salov, Valery – G81 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qb3 Rb8 8. d3 Bd6 9. Nc3 a6 10. Ng5 Qe7
Ruy Lopez Memorial 1975 – Round 2 – Petrosian, Tigran V – 1/2-1/2 – Olafsson, Fridrik – G5 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qc2 b6 8. b3 Bb7 9. Bb2 Be7 10. O-O O-O
URS-ch41 1973 – Round 12 – Polugaevsky, Lev – 1/2-1/2 – Keres, Paul – G9 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. Qc2 b6 8. O-O Bb7 9. Nc3 Be7 10. d4 cxd4
World Blitz 2009 – Round 39 – Svidler, Peter – 0-1 – Morozevich, Alexander – G402 1. c4 e6 2. Nf3 d5 3. g3 dxc4 4. Qa4+ Nd7 5. Qxc4 Ngf6 6. Bg2 c5 7. O-O b6 8. e4 a5 9. Re1 Ba6 10. Qc2 c4
World Cup 1988 – Round 1 – Andersson, Ulf 1949 – 1/2-1/2 – Sokolov, Andrei – G75 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O b6 8. d4 Bb7 9. Nc3 a6 10. dxc5 Bxc5
World Rapid 2016 – Round 15.5 – Aronian, Levon – 1/2-1/2 – Cheparinov, Ivan – G591 1. c4 e6 2. g3 d5 3. Bg2 dxc4 4. Qa4+ Nd7 5. Qxc4 c5 6. Nf3 Ngf6 7. O-O b6 8. Nd4 Ne5 9. Nc6 Nxc4 10. Nxd8 Nd5

A13w — Neo-Catalan Accepted (1948)

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 c5

Les coups candidats

7.O-O — 45.8% (700 parties)

Ambassadeurs : Mednis, Edmar J (8x), Klovans, Janis (6x), Korchnoi, Viktor (5x), Panczyk, Krzysztof (5x), Andersson, Ulf (4x), Luther, Thomas (4x), Taimanov, Mark (4x), Lechtynsky, Jiri (4x)

7.Qb3 — 22.0% (336 parties)

Ambassadeurs : Vaganian, Rafael A (10x), Sveshnikov, Evgeny (8x), Luther, Thomas (6x), Kiselev, Sergey. (6x), Adamski, Jan (4x), Aleksandrov, Viktor A. (4x), Romanishin, Oleg M (3x), Arnason, Jon L (3x)

7.d3 — 17.5% (268 parties)

Ambassadeurs : Inkiov, Ventzislav (6x), Sveshnikov, Evgeny (6x), Shcherbakov, Ruslan (4x), Makarov, Marat (4x), Knoedler, Dieter, Dr. (3x), Zenzera, Alexey (3x), Aleksandrov, Viktor A. (3x), Boersma, Paul (2x)

7.Qc2 — 8.2% (126 parties)

Ambassadeurs : Tal, Mikhail (2x), Jansson, Borje (2x), Langeweg, Kick (2x), Polugaevsky, Lev (2x), Sehner, Norbert (1x), Polaczek, Richard (1x), Mesiarik, Rudolf (1x), Dizdar, Goran (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.O-O	7.Qb3	7.d3	7.Qc2
<1800	23	39%	4%	35%	9%
1800-2200	310	52%	19%	15%	7%
2200-2600	1044	45%	22%	18%	9%
2600+	72	31%	33%	24%	12%

Évolution par décennie (% des parties)

Décennie	N parties	7.O-O	7.Qb3	7.d3	7.Qc2
1950s	5	100%	—	—	—
1960s	2	100%	—	—	—
1970s	76	57%	13%	3%	18%
1980s	197	51%	32%	6%	4%
1990s	311	38%	29%	23%	3%
2000s	224	55%	15%	17%	6%
2010s	470	45%	22%	17%	11%
2020s	243	39%	15%	27%	12%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.O-O	45%	39%	▼ -6.2%
7.Qb3	22%	15%	▼ -6.5%
7.d3	17%	27%	▲ +9.5%
7.Qc2	11%	12%	▲ +0.9%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 9 parties
Karpov, Anatoly — 2 parties
Hou, Yifan — 2 parties
Kramnik, Vladimir — 1 partie

Parties historiques

7.O-O — 45.8% (700 parties)

1950 — Karff, Mona M vs Larsen, Ingrid — 1-0 — Moscow RUS
1951 — Smyslov, Vasily vs Taimanov, Mark — 1-0 — Moscow RUS
1955 — Gurgenidze, Bukhuti vs Lipnitsky, Isaac — 0-1 — Voroshilovgrad
1956 — Muehlberg, Siegfried vs Bertholdt, Dieter — 1/2-1/2 — Leipzig GER
1957 — Sandor, Bela vs Abramov, Roman — 0-1 — Minsk BLR

7.Qb3 — 22.0% (336 parties)

1971 — Salvaggione, Mike vs Wall, Alejandro — 0-1 — Marysville,CA
1977 — Kochyev, Alexander vs Bagirov, Vladimir — 1/2-1/2 — Leningrad ch-URS
1977 — Petrosian, Arshak B vs Razuvaev, Yuri S — 1-0 — Baku AZE
1977 — Mikhalchishin, Adrian vs Djuric, Stefan — 1/2-1/2 — Tallinn EST
1978 — Vaganian, Rafael A vs Sveshnikov, Evgeny — 1-0 — Lvov zt

7.d3 — 17.5% (268 parties)

1975 — Benko, Pal vs Liebert, Heinz — 1/2-1/2 — Szolnok
1979 — Jones, Iolo C vs Borik, Otto — 1/2-1/2 — West Germany
1981 — Karlsson, Lars 1937 vs Schneider, Lars-Ake — 1/2-1/2 — Eksjo SWE
1984 — Vilela De Acuna, Jose Luis vs Chernin, Alexander — 1/2-1/2 — Stary Smokovec SVK
1985 — Pigusov, Evgeny vs Sveshnikov, Evgeny — 1/2-1/2 — Sochi RUS

7.Qc2 — 8.2% (126 parties)

1973 — Polugaevsky, Lev vs Keres, Paul Petrovich — 1/2-1/2 — Moscow RUS
1973 — Polugaevsky, Lev vs Keres, Paul — 1/2-1/2 — Moskou ch-URS
1974 — Szabo, Laszlo vs Gerusel, Mathias — 1/2-1/2 — Solingen GER
1975 — Smejkal, Jan vs Tal, Mikhail — 1/2-1/2 — Milan ITA
1975 — Petrosian, Tigran A. vs Olafsson, Fridrik — 1/2-1/2 — Las Palmas ESP

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