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OPENINGS THEORY
- ECO CODES BASE -

- D90 -

[D90-s] - QGD: Slav, 4.Nc3,
Schlechter variation
1.d4 d5 (QR: (Queen's ram))
2.c4 c6 3.Nf3 Nf6 4.Nc3 (TNBF:
(three Knights basic formation))
+(WWS: (White wide spectrum)) g6
(see: D90)
[D90-t] - QGD: Slav, 4.Nc3,
Schlechter variation
1.d4 d5 (QR: (Queen's ram))
2.c4 c6 3.Nf3 Nf6 4.Nc3 (TNBF:
(three Knights basic formation))
+(WWS: (White wide spectrum)) g6
5.Bf4 (see: D90) +/=
[D90-u] - QGD: Slav, 4.Nc3,
Schlechter variation
1.d4 d5 (QR: (Queen's ram))
2.c4 c6 3.Nf3 Nf6 4.Nc3 (TNBF:
(three Knights basic formation))
+(WWS: (White wide spectrum)) g6
5.cxd5 (see: D90) +/=
[D90-v] - QGD: Slav, 4.Nc3,
Schlechter variation
1.d4 d5 (QR: (Queen's ram))
2.c4 c6 3.Nf3 Nf6 4.Nc3 (TNBF:
(three Knights basic formation))
+(WWS: (White wide spectrum)) g6
5.e3 (see: D90) +/=

[D90-a] - Grunfeld:
Three knights variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3

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[D90-b] - Grunfeld:
Schlechter variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 c6

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[D90-c] - Grunfeld:
Schlechter variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 c6 5.cxd5 cxd5

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[D90-d] - Grunfeld:
Three knights variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7

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[D90-e] - Grunfeld:
Flohr variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.Qa4

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[D90-f] - Grunfeld:
Flohr variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.Qa4 c6

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[D90-g] - Grunfeld:
Flohr variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.Qa4 c6 6.cxd5 Nxd5

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[D90-h] - Grunfeld:
Flohr variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.Qa4 c6 6.cxd5 Nxd5
7.e4

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[D90-i] - Grunfeld:
Flohr variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.Qa4 Bd7

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[D90-j] - Grunfeld:
Flohr variation
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.Qa4 Bd7 6.Qb3

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[D90-k] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5

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[D90-l] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Qb3

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[D90-m] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Qb3 Nb6

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[D90-n] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Qb3 Nxc3

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[D90-o] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2

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[D90-p] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 c5
(THMO: (thematic move))

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[D90-q] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 0-0

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[D90-r] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 0-0
7.Rc1 (OF: (open file))

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[D90-s] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 0-0
7.Rc1 (OF: (open file)) Nb6

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[D90-t] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 0-0
7.Rc1 (OF: (open file)) Nc6
8.e3 (RECE: (reserved centre)) (Nb6
or Nc6)

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[D90-u] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 0-0
7.Rc1 (OF: (open file)) Nc6
8.e3 (RECE: (reserved centre)) e5!?
(CP=d4)

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[D90-v] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 0-0
7.Rc1 (OF: (open file)) Nc6
8.e3 (RECE: (reserved centre)) e5!?
(CP=d4) 9.Nxd5 Qxd5

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[D90-w] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 0-0
7.Rc1 (OF: (open file)) Nc6
8.e3 (RECE: (reserved centre)) e5!?
(CP=d4) 9.Nxd5 Qxd5 10.Bc4

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[D90-x] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 0-0
7.Rc1 (OF: (open file)) Nc6
8.e3 (RECE: (reserved centre)) e5!?
(CP=d4) 9.Nxd5 Qxd5 10.Bc4 Qd6

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[D90-y] - Grunfeld:
Three knights variation,
5...Nxd5 line
1.d4 Nf6 2.c4 g6 3.Nc3 d5
4.Nf3 Bg7 5.cxd5 Nxd5 6.Bd2 0-0
7.Rc1 (OF: (open file)) Nc6
8.e3 (RECE: (reserved centre)) e5!?
(CP=d4) 9.Nxd5 Qxd5 10.Bc4 Qd6
11.d5!? =

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