OPENINGS THEORY
- ECO CODES BASE -

- E05 -



[E05-a] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7


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[E05-b] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.Ne5!?


1. «»
«»


[E05-c] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0


1. «»
«»


[E05-d] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 Nc6


1. «»
«»


[E05-e] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 Nbd7


1. «»
«»


[E05-f] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 Nbd7 7.Nbd2 Nb6


1. «»
«»


[E05-g] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0


1. «»
«»


[E05-h] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Nc3


1. «»
«»


[E05-i] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Nc3 c5
(TALV: (Tarrasch's lever)) =


1. «»
«»


[E05-j] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Nbd2


1. «»
«»


[E05-k] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Nbd2 c5
(TALV: (Tarrasch's lever)) =


1. «»
«»


[E05-l] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Ne5


1. «»
«»


[E05-m] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Ne5 c5
(TALV: (Tarrasch's lever)) =


1. «»
«»


[E05-n] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Ne5 c5
(TALV: (Tarrasch's lever)) 8.dxc5
Bxc5 =


1. «»
«»


[E05-o] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Ne5 c5
(TALV: (Tarrasch's lever)) 8.dxc5
Qc7 (SP: (strategic position)) =


1. «»
«»


[E05-p] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Ne5 Nc6


1. «»
«»


[E05-q] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Ne5 Nc6
8.Nxc6 bxc6 (FM: (forced move))


1. «»
«»


[E05-r] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Ne5 Nc6
8.Nxc6 bxc6 (FM: (forced move))
9.Na3 Bxa3 10.bxa3 (FM) +/=


1. «»
«»


[E05-s] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)


1. «»
«»


[E05-t] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
Nbd7 =


1. «»
«»


[E05-u] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
Nbd7 8.Nbd2 c5 (TALV: (Tarrasch's
lever)) =


1. «»
«»


[E05-v] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
c5 (TALV: (Tarrasch's lever)) =


1. «»
«»


[E05-w] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
c5 (TALV: (Tarrasch's lever))
8.Qxc4 Qc7 (QASS: (Queens' attack
on the same side)) +/=


1. «»
«»


[E05-x] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
a6 (WID: b5)


1. «»
«»


[E05-y] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
a6 (WID: b5) 8.Qxc4 b5 +/=


1. «»
«»


[E05-z] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
a6 (WID: b5) 8.Qxc4 b5 9.Qc2 +/=


1. «»
«»


[E05-a*] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
a6 (WID: b5) 8.Qxc4 b5 9.Qc2 Bb7
10.Bf4 +/=


1. «»
«»


[E05-b*] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
a6 (WID: b5) 8.a4 (WID: counter b5)


1. «»
«»


[E05-c*] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
a6 (WID: b5) 8.a4 (WID: counter b5)
c5!? (TALV: (Tarrasch lever))


1. «»
«»


[E05-d*] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
a6 (WID: b5) 8.a4 (WID: counter b5)
c5!? (TALV: (Tarrasch lever))
9.dxc5 Bxc5 +/=


1. «»
«»


[E05-e*] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
a6 (WID: b5) 8.a4 (WID: counter b5)
Nc6 (CP=d4)


1. «»
«»


[E05-f*] - Catalan:
open, classical line
1.d4 Nf6 2.c4 e6 3.g3 d5 (QGLV:
(Queen's gambit lever)) 4.Bg2 dxc4
5.Nf3 Be7 6.0-0 0-0 7.Qc2 (SP)
a6 (WID: b5) 8.a4 (WID: counter b5)
Nc6 (CP=d4) 9.Qxc4 Qd5 (QACE:
(Queens' attack on the centre))


1. «»
«»

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