5...Bb4+ - Open Defense

E04 — Catalan Opening: Open Defense

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 dxc4 5. Bg2 Bb4+   ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bN
bBFou enfermé — mobilité 1
bQ
bKRoi au centre — vulnérable
bR
bP
bP
bP
bP
bP
bP
bP
bN
Case forte (2v0)
Case forte (2v0)
bB
bP
wPCase forte (2v1)
Case forte (2v0)
wN
wP
wP
wP
wP
wP
wB
wP
wR
wN
wBFou actif — mobilité 5
wQ
wK
wR
abcdefgh
Avantages : majorité centre (2v1), case forte d4, case forte f4, case forte e5, case forte g5, paire de fous, colonne c.
Faiblesses adverses : Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bg2 enfermé, 4 pièces non développées (B1, C1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Bd2 — Fou actif (mobilité 7), Développer c1, [Masters 90%]
● Nc3 — Développer Nb1
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wKRoi au centre — doit roquer
wQ
wBFou enfermé — mobilité 5
wN
wR
wP
wBFou enfermé — mobilité 2
wP
wP
wP
wP
wP
wN
wP
bPMajorité aile dame
bBFou actif — mobilité 9
Avant-poste C (accessible)
bN
bP
bP
bP
bP
bP
bP
bP
bR
bK
bQ
bB
bN
bR
hgfedcba
Avantages : majorité aile_dame (4v2), case forte d5, avant-poste d5(C), Bb4 actif, paire de fous, colonne d.
Faiblesses adverses : Bc1 enfermé, Bg2 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, 4 pièces non développées (B8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Bd7 — PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bg4, ...Bf5)
● ...Nbd7 — Développer Nb8
● ...Bg4 — Clouer Nf3
● ...c6 — Rupture
Avantages
Faiblesses adverses
Diagonale active
Plans

+0.43 léger avantage blanc. Base Masters : Blancs 26.2%, Nulles 53.9%, Noirs 19.9%.
Coups candidats
6.Bd2  (89.6% — Blancs: 25.3% | Nulles: 55.8% | Noirs: 18.9%)
6.Nbd2  (5.5% — Blancs: 30.8% | Nulles: 36.5% | Noirs: 32.7%)
6.Nc3  (4.9% — Blancs: 37.6% | Nulles: 38.7% | Noirs: 23.7%)
auto
Analyse coup par coup — 10 demi-coups commentés
1.d4 Avancée centrale — contrôle c5, e5. Prépare c4, e4, Nc3.
1…Nf6 Contrôle e4, d5.
2.Nf3 Contrôle f4, c5, e5.
2…d5 Avancée centrale — contrôle c4, e4. Prépare c5, e5.
3.c4 Avancée centrale — contrôle b5, d5. Prépare d4, Nc3, e4.
3…e6 Avancée centrale — contrôle d5, f5. Prépare d5, Be7, Bd6.
4.g3 Prépare le fianchetto du Fou (Bg2).
4…dxc4 Capture en c4 — résout la tension centrale.
5.Bg2 Contrôle f4, c5, e5.
5…Bb4+ Contrôle d4, e4, c5, d5. Échec !
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 ● d4 (2v1), ● f4 (2v0), ● e5 (2v0), ● g5 (2v0) ● d5 (3v0)
Cases faibles — —
Centre ● d4 (2v1), ● e5 (2v0) ● d5 (3v0), ● 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)
Bb4 ● Bb4 Actif (mob. 9)
Bc8 ● Bc8 Non développé (mob. 1)
Paire de fous ● Oui ● Oui
Non développées 4 (b1, c1, a1, h1) 4 (b8, c8, 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 semi-ouvert
Ruptures ● d4-d5, ● e2-e3 ● …c7-c6, ● …c7-c5, ● …e6-e5
Partie
19. Amber Rapid 2010 – Round 10 – Grischuk, Alexander – 1/2-1/2 – Aronian, Levon – G31
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Nc3 O-O 8. a3 Be7 9. Qa4 c6 10. Qxc4 b5
2024 Superbet Chess Classic - Round 3 - Gukesh D - 1/2-1/2 - Praggnanandhaa R - G11 1971
1. d4 1... Nf6 2. c4 2... e6 3. g3 3... d5 4. Bg2 4... dxc4 5. Nf3 5... Bb4+ 6. Bd2 6... a5 7. a3 7... Bxd2+ 8. Nbxd2 8... b5 9. b3 9... cxb3 10. Qxb3 10... c6
34. ECC Open 2018 – Round 2.9 – Yuffa, Daniil – 0-1 – Predojevic, Borki – G70
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Bd2 a5 7. O-O O-O 8. Bg5 h6 9. Bxf6 Qxf6 10. Qc2 Nd7
36. Olympiad 2004 – Round 11 – Beliavsky, Alexander G – 1/2-1/2 – Veingold, Aleksandr – G377
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Nbxd2 b5 9. a4 c6 10. b3 cxb3
40. Olympiad Open 2012 – Round 4.1 – Gupta, Abhijeet – 1/2-1/2 – Akobian, Varuzhan – G223
1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 7. Qc1 O-O 8. O-O b5 9. a4 Bb7 10. axb5 a6
41. Olympiad Open 2014 – Round 1.32 – Kelires, Andreas – 1/2-1/2 – Filippov, Anton – G50
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Nbd2 O-O 7. Qc2 c5 8. dxc5 c3 9. bxc3 Bxc5 10. O-O Nc6
7. Grand Slam Masters 2014 – Round 4.2 – Ponomariov, Ruslan – 1/2-1/2 – Aronian, Levon – G8
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Bd2 a5 7. a3 Bxd2+ 8. Qxd2 Nbd7 9. O-O c6 10. a4 Nb6
84. Tata Steel Masters 2022 – Round 10.3 – Shankland, Sam – 1/2-1/2 – Mamedyarov, Shakhriyar – G64
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. a3 Bxd2+ 8. Nbxd2 b5 9. b3 c3 10. Nb1 Bb7
84. Tata Steel Masters 2022 – Round 9.1 – Carlsen, Magnus – 1-0 – Mamedyarov, Shakhriyar – G55
1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. O-O O-O 8. e3 Ra6 9. Qc2 b5 10. a4 c6
Amber Rapid 2005 – Round 6 – Bareev, Evgeny – 1/2-1/2 – Kramnik, Vladimir – G16
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. O-O O-O 8. Nc3 Nc6 9. a3 Bxc3 10. Bxc3 Nd5
American Cup Blitz 2022 – Round 7.2 – Robson, Ray – 1/2-1/2 – Caruana, Fabiano – G37
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. O-O O-O 8. a3 Bxd2 9. Nbxd2 b5 10. a4 c6
Anand-Topalov World Chess Championship 2010 – Round 4 – Anand, Viswanathan – 1-0 – Topalov, Veselin – G2
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. a4 b5 10. Na3 10. ... Bd7
Ch World (match) 2006 – Round 1 – Kramnik, Vladimir – 1-0 – Topalov, Veselin – G1
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. a4 b5 10. axb5 cxb5
Ch World (match) 2006 – Round 1 – Kramnik, Vladimir – 1-0 – Topalov, Veselin – G2
1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. a4 b5 10. axb5 cxb5
Corus A 2010 – Round 9 – Carlsen, Magnus – 0-1 – Kramnik, Vladimir – G57
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Nc3 O-O 8. a3 Be7 9. Qa4 c6 10. Qxc4 b5
FIDE Candidates 2022 – Round 13.4 – Radjabov, Teimour – 1/2-1/2 – Caruana, Fabiano – G51
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 O-O 8. Qxc4 b6 9. Bxb4 Ba6 10. Qb3 axb4
FIDE World Cup 2015 – Round 1.3 – Fressinet, Laurent – 1-0 – Brkic, Aleksandar – G141
1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 7. Bxb4 cxb4 8. a3 Nc6 9. axb4 Qb6 10. O-O O-O
FIDE World Cup 2017 – Round 1.2 – Yu, Yangyi – 1/2-1/2 – Pourramezanali, Amirreza – G68
1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. g3 dxc4 5. Bg2 Bb4+ 6. Nc3 O-O 7. O-O Nc6 8. Qa4 Nd5 9. Qc2 Be7 10. Rd1 Ndb4
FIDE World Cup 2019 – Round 1.1 – Abasov, Nijat – 1/2-1/2 – Piorun, Kacper – G23
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. O-O O-O 8. Qc2 Bxd2 9. Nbxd2 b5 10. a4 c6
FIDE World Cup 2019 – Round 1.2 – Naiditsch, Arkadij – 0-1 – Huschenbeth, Niclas – G124
1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 dxc4 5. Bg2 Bb4+ 6. Nc3 Nc6 7. O-O O-O 8. Qa4 Nd5 9. Qc2 Be7 10. Rd1 Rb8
FIDE World Cup 2025 1974 – Round R1 Classical 1 – Kavin Mohan – 1/2-1/2 – Robert Hovhannisyan – G17
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. a4 b5 10. axb5 cxb5
FIDE World Cup 2025 1974 – Round R2 Classical 1 – Vidit Santosh Gujrathi – 1/2-1/2 – Oro Faustino – G234
1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc1 b6 8. Qxc4 Ba6 9. Qc2 c5 10. a3 Bxd2+
FIDE World Cup 2025 1974 – Round R5 Classical 1 – Martinez Alcantara Jose Eduardo – 1/2-1/2 – Harikrishna Pentala – G610
1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 7. a3 Bxd2+ 8. Nbxd2 cxd4 9. Nxc4 Nc6 10. O-O O-O
Lindores Abbey Tal Memorial 2021 – Round 4.12 – Gelfand, Boris – 1-0 – Predke, Alexandr – G171
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 7. Bxb4 cxb4 8. Ne5 O-O 9. O-O Nd5 10. Nxc4 Nc6
Lindores Abbey Tal Memorial 2021 – Round 4.17 – Sargissian, Gabriel – 1/2-1/2 – Korobov, Anton – G175
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. O-O O-O 8. Bg5 b5 9. a4 c6 10. Ne5 Ra6
Qatar Masters Open 2015 – Round 8.18 – Bok, Benjamin – 1/2-1/2 – Korobov, Anton – G265
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 b5 8. a4 bxa4 9. Rxa4 Nc6 10. Qxc4 Bd7
Sparkassen GM 2009 – Round 1 – Leko, Peter – 1/2-1/2 – Kramnik, Vladimir – G1
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. a4 b5 10. axb5 cxb5
Supreme Masters 2013 – Round 7.4 – Hammer, Jon Ludvig – 0-1 – Carlsen, Magnus – G34
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. a4 Ne4 10. Qc2 Nd6
Tal Memorial 2009 – Round 5 – Gelfand, Boris – 1/2-1/2 – Kramnik, Vladimir – G19
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Nc3 O-O 8. Bg5 b5 9. Ne5 Ra6 10. a4 bxa4
World Blitz 2015 – Round 13.60 – Donchenko, Alexander – 0-1 – Lenic, Luka – G834
1. c4 e6 2. g3 d5 3. Nf3 Nf6 4. d4 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. Ne5 b5 10. Nxc6 Qc7
World Blitz 2017 – Round 9.8 – Cheparinov, Ivan – 1/2-1/2 – Wang, Hao(ZJWZ) – G494
1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. a4 Ne4 10. Qf4 Qb6
World Blitz 2018 – Round 6.7 – Postny, Evgeny – 1/2-1/2 – Anand, Viswanathan – G384
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Qxd2 c6 9. Ne5 b5 10. a4 Ra6
World Blitz 2019 – Round 12.58 – Bosiocic, Marin – 1/2-1/2 – Santos Ruiz, Miguel – G834
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. a3 Bxd2+ 8. Nbxd2 b5 9. b3 cxb3 10. Qxb3 c6
World Blitz 2019 – Round 2.27 – Firouzja, Alireza – 1-0 – Triapishko, Alexandr – G100
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 7. O-O O-O 8. dxc5 Bxc5 9. Qc2 Nbd7 10. Na3 b6
World Blitz 2021 – Round 1.58 – Matlakov, Maxim – 1-0 – Asadli, Vugar – G47
1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. O-O O-O 8. e3 b5 9. Ne5 Ra6 10. a4 Bxd2
World Blitz 2021 – Round 13.23 – Sargissian, Gabriel – 0-1 – Oparin, Grigoriy – G762
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. a3 Be7 8. Qa4+ Bd7 9. Qxc4 Bc6 10. Nc3 O-O
World Blitz 2021 – Round 16.1 – Grischuk, Alexander – 1-0 – Carlsen, Magnus – G919
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Bd2 a5 7. Qc1 b6 8. Bxb4 axb4 9. Qxc4 Bb7 10. O-O Nc6
World Blitz 2021 – Round 17.19 – Cheparinov, Ivan – 1/2-1/2 – Dreev, Aleksey – G987
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 b5 8. a4 Bxd2+ 9. Qxd2 c6 10. Na3 Qb6
World Blitz 2022 – Round 10.58 – Sargsyan, Shant – 1-0 – Zhalmakhanov, Ramazan – G548
1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 7. O-O O-O 8. dxc5 Bxc5 9. Qc2 Qe7 10. Qxc4 b6
World Blitz 2023 – Round 17.30 – Matlakov, Maxim – 1/2-1/2 – Kovalev, Vl – G976
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Bd2 a5 7. a3 Be7 8. Qa4+ Bd7 9. Qxc4 Bc6 10. Nc3 O-O
World Cup 1988 – Round 1 – Beliavsky, Alexander G – 1/2-1/2 – Ljubojevic, Ljubomir – G28
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 7. Bxb4 cxb4 8. Ne5 O-O 9. Nxc4 Nc6 10. e3 a5
World Rapid 2021 – Round 10.53 – Yuffa, Daniil – 1-0 – Oparin, Grigoriy – G603
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Bd2 a5 7. O-O O-O 8. Qc2 b5 9. a4 Bxd2 10. Nfxd2 Ra7

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