OPENINGS THEORY
- ECO CODES BASE -


- D49 -



[D49-a] - QGD: semi-Slav,
Meran, Blumenfeld variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5


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[D49-b] - QGD: semi-Slav,
Meran, Blumenfeld variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Bf7


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[D49-c] - QGD: semi-Slav,
Meran, Rabinovich variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Ng4


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[D49-d] - QGD: semi-Slav,
Meran, Rabinovich variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Ng4 12.Nbxd4
Bb4+ (WCFP: (with
compensation for the pawn))


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[D49-e] - QGD: semi-Slav,
Meran, Rabinovich variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Ng4 12.Qa4


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[D49-f] - QGD: semi-Slav,
Meran, Rabinovich variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Ng4 12.Qa4
Bb7 (13.Nbxd4 or 13.Nd6+) +/-


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[D49-g] - QGD: semi-Slav,
Meran, Rabinovich variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Ng4 12.Qa4
Rb8 13.Nd6+ Bxd6 14.exd6 Qb6
(QASS: (Queens' attack on
the same side))


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[D49-h] - QGD: semi-Slav,
Meran, Rabinovich variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Ng4 12.Qa4
Ngxe5 (13.Nxe5 ) +/-


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[D49-i] - QGD: semi-Slav,
Meran, Rabinovich variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Ng4 12.Qa4
Ngxe5 13.Nxe5 Nxe5 14.Nc7+


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[D49-j] - QGD: semi-Slav,
Meran, Rabinovich variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Ng4 12.Qa4
Ngxe5 13.Nxe5 Nxe5 14.Nd6+
Ke7 (CK: (centralized King))
+ (AFM: (absolutly forced move))


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[D49-k] - QGD: semi-Slav,
Meran, Sozin variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5


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[D49-l] - QGD: semi-Slav,
Meran, Sozin variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nbxd4?! =/+


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[D49-m] - QGD: semi-Slav,
Meran, Sozin variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5


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[D49-n] - QGD: semi-Slav,
Meran, Stahlberg variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.Qf3


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[D49-o] - QGD: semi-Slav,
Meran, Stahlberg variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.Qf3 Qa5+
(QAOS: (Queens' attack on
opposite sides))


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[D49-p] QGD: semi-Slav,
Meran, Stahlberg variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.Qf3 Qa5+ 14.Ke2
(CK: (centralized King))


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[D49-q] - QGD: semi-Slav,
Meran, Stahlberg variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.Qf3 Bb4+
(COAT: (counter-attack))


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[D49-r] - QGD: semi-Slav,
Meran, Stahlberg variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.Qf3 Bb4+
(COAT: (counter-attack))
14.Ke2 (or Kd1) (CK)


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[D49-s] - QGD: semi-Slav,
Meran, Stahlberg variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.Qf3 Bb4+
(COAT: (counter-attack))
14.Ke2 (CK) Rb8 15.Qg3 (DAT:
double attack)) (Qd6)


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[D49-t] - QGD: semi-Slav,
Meran, Sozin variation,
13.Bxb5+ line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.Bxb5+ Bd7
(FM: (forced move))


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[D49-u] - QGD: semi-Slav,
Meran, Sozin variation
13.Bxb5+ line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.Bxb5+ Bd7
(FM: (forced move)) 14.Nxd7
Qa5+ (COAT) 15.Bd2 (FM) Qxb5


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[D49-v] - QGD: semi-Slav,
Meran, Sozin variation,
13.0-0 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.0-0 (SFP:
(security for a pawn)


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[D49-w] - QGD: semi-Slav,
Meran, Sozin variation,
13.0-0 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.0-0 (SFP:
(security for a pawn) Qd5


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[D49-x] - QGD: semi-Slav,
Meran, Sozin variation,
13.0-0 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.0-0 (SFP:
(security for a pawn) Qd5
14.Qe2 (QACE: Queens' attack
on the centre))


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[D49-y] QGD: semi-Slav,
Meran, Rellstab attack
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.0-0 (SFP:
(security for a pawn) Qd5
14.Qe2 (QACE) Ba6 15.Bg5


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[D49-z] QGD: semi-Slav,
Meran, Rellstab attack
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 Nxe5
12.Nxe5 axb5 13.0-0 (SFP:
(security for a pawn) Qd5
14.Qe2 (QACE) Ba6 15.Bg5 Be7
16.f4 0-0 (unclear)


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[D49-a*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM: forced move))


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[D49-b*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM) Bb7 (13.0-0) +/=


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[D49-c*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM: forced move))) Qb6
(13.0-0) +/=


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[D49-d*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM) Qb6 13.fxg7 Bxg7 (FM) +/=


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[D49-e*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM) Qb6 13.fxg7 Bxg7 (FM)
14.Qe2 (b4 15.0-0) +/=


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[D49-f*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM) Qb6 13.fxg7 Bxg7 (FM)
14.Qe2 0-0 15.0-0 +/=


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[D49-g*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM) Qb6 13.fxg7 Bxg7 (FM)
14.0-0 +/=


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[D49-h*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM) Qb6 13.fxg7 Bxg7 (FM)
14.0-0 Nc5 +/=


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[D49-i*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM) Qb6 13.fxg7 Bxg7 (FM)
14.0-0 Bb7


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[D49-j*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM) Qb6 13.fxg7 Bxg7 (FM)
14.0-0 Bb7 15.Bf4 0-0


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[D49-k*] - QGD: semi-Slav,
Meran, Blumenfeld variation
11...axb5 line
1.d4 d5 2.c4 e6 3.Nc3 Nf6
4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4
7.Bxc4 b5 8.Bd3 a6 9.e4 c5
10.e5 cxd4 11.Nxb5 axb5 12.exf6
(FM) Qb6 13.fxg7 Bxg7 (FM)
14.0-0 Bb7 15.Bf4 0-0
16.Re1 (OF) Bd5 (SP:
(strategic position))


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