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OPENINGS THEORY
- ECO CODES BASE -
- A03 -
BIRD'S OPENING
(1.f4 d5)
[A03-a] - Bird's opening
1.f4 d5 =
(QPOP: (Quasi Pure Opening))
(see also: B02, B10, B20, B24, C00, D00)
(2.c3, 2.e4, 2.Nc3, 2.c4)
(2.d4: D00-QPOP)
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[A03-b] - Bird's opening
Boden retort: 2.d3
1.f4 d5 2.d3?! =/+
(QPOP:) (see also: B20, C00)
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[A03-c] - Bird's opening
Wade retort: 2.g3
1.f4 d5 2.g3?! (g6) =/+
(QPOP:) (see also: B20)
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[A03-d] - Bird's opening
Wade retort: 2.g3
Wade-Nievergelt line: 2...Nf6
1.f4 d5 2.g3?! Nf6 =/+
(TPOP: (Totally Pure Opening))
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[A03-e] - Bird's opening
Barnes retort: 2.b3
1.f4 d5 2.b3 =
(TPOP: (Totally Pure Opening))
(2...f5, 2...b6, 2...e5, 2...g6, 2...c6, 2...d4, 2...Qd6,
2...Nc6, 2...Bf5, 2...e6)
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[A03-f] - Bird's opening
Barnes retort: 2.b3
Ivkov-Karaklajic line: 2...Bg4
1.f4 d5 2.b3 Bg4! =/+
(TPOP: (Totally Pure Opening))
(BSIA: (Black Significant Advantage))
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[A03-g] - Bird's opening
Barnes retort: 2.b3
D'Andre-Golmayo line: 2...c5
1.f4 d5 2.b3 c5 =
(TPOP: (Totally Pure Opening))
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[A03-h] - Bird's opening
Barnes retort: 2.b3
D'Andre-Golmayo line: 2...c5 3.e3
1.f4 d5 2.b3 c5 3.e3 =
(TPOP: (Totally Pure Opening))
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[A03-i] - Bird's opening
Barnes retort: 2.b3
Jacobs-Ruth system: 2...Nf6
1.f4 d5 2.b3 Nf6 =
(TPOP: (Totally Pure Opening))
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[A03-j] - Bird's opening
Barnes retort: 2.b3
Jacobs-Ruth system: 2...Nf6 3.Bb2
1.f4 d5 2.b3 Nf6 3.Bb2 (g6) =
(TPOP: (Totally Pure Opening))
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[A03-k] - Bird's opening
Barnes retort: 2.b3
Jacobs-Ruth system: 2...Nf6 3.Bb2 e6
1.f4 d5 2.b3 Nf6 3.Bb2 e6 =
(TPOP: (Totally Pure Opening))
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[A03-l] - Bird's opening
Barnes retort: 2.b3
Romi-Vukovic system: 2...Nf6 3.Nf3
1.f4 d5 2.b3 Nf6 3.Nf3 =
(TPOP: (Totally Pure Opening))
(3...Bf5, 3...Nc6, 3...Bg4, 3...e6, 3...c5)
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[A03-m] - Bird's opening
Barnes retort: 2.b3
Romi-Vukovic system: 3.Nf3 g6
1.f4 d5 2.b3 Nf6 3.Nf3 g6 =/+
(TPOP: (Totally Pure Opening))
(4.Bb2, 4.e3)
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[A03-n] - Bird's opening
Williams retort: 2.e3
1.f4 d5 2.e3 =
(QPOP: (Quasi Pure Opening))
(see also: D00)
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[A03-o] - Bird's opening
Williams retort: 2.e3
Williams-Staunton system: 2...c5
1.f4 d5 2.e3 c5 =
(QPOP: (Quasi Pure Opening))
(see also: D00)
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[A03-p] - Bird's opening
Williams retort: 2.e3
Kennedy-Wivill system: 2...g6
1.f4 d5 2.e3 g6! =/+
(TPOP: (Totally Pure Opening))
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[A03-q] - Bird's opening
Williams retort: 2.e3
Williams-Horwitz system: 2...Nf6
1.f4 d5 2.e3 Nf6 =
(QPOP: (Quasi Pure Opening))
(see also: D00)
(3.Be2, 3.Nc3) (3.Nf3: 2.Nf3)
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[A03-r] - Bird's opening
Williams retort: 2.e3
Williams-Horwitz system: 2...Nf6 3.b3
1.f4 d5 2.e3 Nf6 3.b3 =
(TPOP: (Totally Pure Opening))
(3...e6, 3...c5, 3...g6)
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[A03-s] - Bird's opening
Williams retort: 2.e3
Basta-Kislov system: 2...Nf6 3.d4
1.f4 d5 2.e3 Nf6 3.d4 =
(D00-QPOP: (Quasi Pure Opening))
(see also: A45, D00)
(3...g6, 3...c5, 3...e6)
(3...Bg4: DOO-TPOP, 3...Bf5: DOO-TPOP)
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[A03-t] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
1.f4 d5 2.Nf3 =/unclear
(QPOP: (Quasi Pure Opening))
(see also: B20, B21, B24, D00)
(2...d4, 2...b6, 2...h5, 2...Qd6, 2...h6, 2...f6, 2...f5,
2...Bf5)
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[A03-u] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Ladanylke Karakas retort: 2...c6
1.f4 d5 2.Nf3 c6 =
(TPOP: (Totally Pure Opening))
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[A03-v] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...Bg4
1.f4 d5 2.Nf3 Bg4! =/+
(QPOP: (Quasi Pure Opening))
(see also: D00)
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[A03-w] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...Bg4
Kolisch-Paulsen system: 3.e3
1.f4 d5 2.Nf3 Bg4! 3.e3 (Nd7) =/+
(QPOP: (Quasi Pure Opening))
(see also: D00) (3...Nf6: 2...Nf6)
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[A03-x] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...Bg4
Kolisch-Paulsen system: 3.e3 Nc6
1.f4 d5 2.Nf3 Bg4! 3.e3 Nc6?! +/=
(QPOP: (Quasi Pure Opening))
(see also: D00) (4.b3, 4.Be2, 4.Bb5)
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[A03-y] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Walker retort: 2...e6
1.f4 d5 2.Nf3 e6?! +/=
(QPOP: (Quasi Pure Opening))
(see also: D00) (3.g3, 3.b3, 3.d4)
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[A03-z] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Walker retort: 2...e6
Loewe-Medley system: 3.e3
1.f4 d5 2.Nf3 e6?! 3.e3 +/=
(QPOP: (Quasi Pure Opening))
(see also: D00) (3...Fd6, 3...Nc6, 3...c5)
(3...Nf6: 2...Nf6)
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[A03-a*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Walker retort: 2...e6
Loewe-Medley system: 3.e3 c5
1.f4 d5 2.Nf3 e6?! 3.e3 c5 +/=
(QPOP: (Quasi Pure Opening))
(see also: D00)
(4.Bb5+, 4.Be2, 4.d4, 4.b3)
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[A03-b*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Simons retort: 2...Nc6
1.f4 d5 2.Nf3 Nc6?! +/=
(TPOP: (Totally Pure Opening))
(3.d3, 3.d4, 3.b3, 3.g3)
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[A03-c*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Simons retort: 2...Nc6
Kolish-Paulsen system: 3.e3
1.f4 d5 2.Nf3 Nc6?! 3.e3 +/=
(TPOP: (Totally Pure Opening))
(3...a6, 3...g6, 3...Bf5, 3...e6)
(3...Nf6: 2...Nf6)
(WSIA: (White Significant Advantage))
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[A03-d*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Simons retort: 2...Nc6
Kolish-Paulsen system: 3.e3 Bg4
1.f4 d5 2.Nf3 Nc6?! 3.e3 Bg4 +/=
(TPOP: (Totally Pure Opening))
(4.d4, 4.b3, 4.Be2, 4.Bb5)
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[A03-e*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...c5
1.f4 d5 2.Nf3 c5! =
(TPOP: (Totally Pure Opening))
(3.Nc3, 3.c3, 3.e4, 3.d3, 3.b3)
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[A03-f*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...c5
Kortschnoj-Golberg system: 3.g3
1.f4 d5 2.Nf3 c5! 3.g3 =
(TPOP: (Totally Pure Opening))
(3...b6, 3...e6, 3...g6)
(3...Nf6: 2...Nf6)
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[A03-g*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...c5
Kortschnoj-Golberg system: 3.g3 Nc6
1.f4 d5 2.Nf3 c5! 3.g3 Nc6 =
(TPOP: (Totally Pure Opening))
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[A03-h*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...c5
Bird-Winawer system: 3.e3
1.f4 d5 2.Nf3 c5! 3.e3 =
(TPOP: (Totally Pure Opening))
(3...Bg4, 3...a6, 3...g6, 3..e6)
(3..Nf6: 2...Nf6)
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[A03-i*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...c5
Bird-Winawer system: 3.e3 Nc6
1.f4 d5 2.Nf3 c5! 3.e3 Nc6 =
(TPOP: (Totally Pure Opening))
(4.d3, 4.c3, 4.Be2, 4.d4)
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[A03-j*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...c5
Bird-Winawer system: 3.e3 Nc6
Williams line: 4.b3
1.f4 d5 2.Nf3 c5! 3.e3 Nc6 4.b3 +/=
(TPOP: (Totally Pure Opening))
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[A03-k*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Medley retort: 2...c5
Bird-Winawer system: 3.e3 Nc6 4.Bb5
1.f4 d5 2.Nf3 c5! 3.e3 Nc6 4.Bb5 (Bd7) +/=
(TPOP: (Totally Pure Opening))
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[A03-l*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
1.f4 d5 2.Nf3 g6! =/+
(TPOP: (Totally Pure Opening))
(3.e4, 3.b3, 3.c3, 3.c4, 3.d4, 3.d3)
(BSIA: (Black Significant Advantage))
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[A03-m*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
Markov-Ivanov system: 3.g3
1.f4 d5 2.Nf3 g6! 3.g3 =/+
(TPOP: (Totally Pure Opening))
(3...b6, 3...c6, 3...c5) (3...Nf6: 2...Nf6)
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[A03-n*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
Markov-Ivanov system: 3.g3 Bg7
1.f4 d5 2.Nf3 g6! 3.g3 Bg7 =/+
(TPOP: (Totally Pure Opening))
(4.c3, 4.d3)
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[A03-o*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
Markov-Ivanov system: 3.g3 Bg7 4.Bg2
1.f4 d5 2.Nf3 g6! 3.g3 Bg7 4.Bg2 =/+
(TPOP: (Totally Pure Opening))
(4...Bg4, 4...e6, 4...b6, 4...Nd7, 4...Nc6)
(4...Nf6: 2...Nf6)
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[A03-p*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
Markov-Ivanov system: 3.g3 Bg7 4.Bg2
Ratolistka-Alster line: 4...Nh6
1.f4 d5 2.Nf3 g6! 3.g3 Bg7 4.Bg2 Nh6!? =/+
(TPOP: (Totally Pure Opening))
(5.Nc3, 5.c3, 5.d3, 5.0-0)
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[A03-q*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
Markov-Ivanov system: 3.g3 Bg7 4.Bg2
Stulik-Podgorny line: 4...c6
1.f4 d5 2.Nf3 g6! 3.g3 Bg7 4.Bg2 c6!? =/+
(TPOP: (Totally Pure Opening))
(5.e3, 5.Nc3, 5.c3, 5.0-0, 5.d3)
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[A03-r*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
Markov-Ivanov system: 4.Bg2 c5
1.f4 d5 2.Nf3 g6! 3.g3 Bg7 4.Bg2 c5 (5.0-0) =
(QPOP: (Quasi Pure Opening))
(see also: B20, B24) (5.e3, 5.c3, 5.d3)
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[A03-s*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
MacDonnell-Wisker system: 3.e3
1.f4 d5 2.Nf3 g6! 3.e3?! =/+
(TPOP: (Totally Pure Opening))
(3...e6, 3...Bg4, 3...c5) (3...Nf6: 2...Nf6)
(BSIA: (Black Significant Advantage))
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[A03-t*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
MacDonnell-Wisker system: 3.e3 Bg7
1.f4 d5 2.Nf3 g6! 3.e3?! Bg7 =/+
(TPOP: (Totally Pure Opening))
(4.g3, 4.Bb5+, 4.c3, 4.d3, 4.Nc3)
(BSIA: (Black Significant Advantage))
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[A03-u*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
MacDonnell-Wisker system: 3.e3 Bg7
Bird-Van Vilet line: 4.c4
1.f4 d5 2.Nf3 g6! 3.e3?! Bg7 4.c4 =/+
(TPOP: (Totally Pure Opening))
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[A03-v*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
MacDonnell-Wisker system: 3.e3 Bg7
Bird-Mackenzie line: 4.d4
1.f4 d5 2.Nf3 g6! 3.e3?! Bg7 4.d4 =/+
(QPOP: (Quasi Pure Opening))
(see also: A41, D00)
(BSIA: (Black Significant Advantage))
(4...Bf5, 4...Bg4, 4...c5, 4...Nh6)
(4...Nf6: 2...Nf6)
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[A03-w*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
MacDonnell-Wisker system: 4.Be2
1.f4 d5 2.Nf3 g6! 3.e3?! Bg7 4.Be2 =/+
(TPOP: (Totally Pure Opening))
(4...c6, 4...e6, 4...Nc6, 4...Bg4,
4...Nd7, 4...Nh6) (4...Nf6: 2...Nf6)
(BSIA: (Black Significant Advantage))
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[A03-x*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3
Makenzie retort: 2...g6
MacDonnell-Wisker system: 4.Be2 c5
1.f4 d5 2.Nf3 g6! 3.e3?! Bg7
4.Be2 c5 =/+
(TPOP: (Totally Pure Opening))
(5.d4, 5.d3, 5.0-0)
(BSIA: (Black Significant Advantage))
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[A03-y*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
1.f4 d5 2.Nf3 Nf6 =
(QPOP: (Quasi Pure Opening))
(see also: D00) (3.b4, 3.c3)
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[A03-z*] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Krasner retort: 3.d3
1.f4 d5 2.Nf3 Nf6 3.d3 (g6) =
(TPOP: (Totally Pure Opening))
(3...Bf5, 3...b6, 3...e6, 3...Nc6, 3...c5)
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[A03-a**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Ware retort: 3.d4
1.f4 d5 2.Nf3 Nf6 3.d4 (e6) =
(D00-QPOP: (Quasi Pure Opening))
(see also: D00) (3...Ne4, 3...Bg4,
3...Nc6, 3...c5, 3...g6, 3...Bf5)
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[A03-b**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Yurevich retort: 3.b3
1.f4 d5 2.Nf3 Nf6 3.b3 =/unclear
(TPOP: (Totally Pure Opening))
(3...b6, 3...c6, 3...Bf5, 3...Nc6,
3...Bg4, 3...e6)
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[A03-c**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Yurevich retort: 3.b3
Lazard-Znosko Borovsky line: 3...c5
1.f4 d5 2.Nf3 Nf6 3.b3 c5 =
(TPOP: (Totally Pure Opening))
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[A03-d**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Yurevich retort: 3.b3
David-Botvinnik line: 3...g6
1.f4 d5 2.Nf3 Nf6 3.b3 g6! =/+
(TPOP: (Totally Pure Opening))
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[A03-e**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Santasiere retort: 3.g3
1.f4 d5 2.Nf3 Nf6 3.g3 (e6) =
(TPOP: (Totally Pure Opening))
(3...b6, 3...Nc6, 3...Bg4, 3...Bf5, 3...c6)
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[A03-f**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Santasiere retort: 3.g3
Kostic-Milic line: 3...c5
1.f4 d5 2.Nf3 Nf6 3.g3 c5?! +/=
(TPOP: (Totally Pure Opening))
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[A03-g**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 3.g3 g6
1.f4 d5 2.Nf3 Nf6 3.g3 g6 =
(TPOP: (Totally Pure Opening))
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[A03-h**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 4.Bg2 Bg7
1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7
(5.d3) =
(TPOP: (Totally Pure Opening))
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[A03-i**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 4.Bg2 Bg7 5.0-0
1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7
5.0-0 (c5) =
(TPOP: (Totally Pure Opening))
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[A03-j**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 5.0-0 0-0
1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7
5.0-0 0-0 =
(TPOP: (Totally Pure Opening))
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[A03-k**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 5.0-0 0-0 6.d3
1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7
5.0-0 0-0 6.d3 (b6) =
(TPOP: (Totally Pure Opening))
(6...Nbd7, 6...d4, 6...Nc6)
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[A03-l**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 5.0-0 0-0 6.d3
Larsen-Hansen line: 6...c6
1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7
5.0-0 0-0 6.d3 c6 =
(TPOP: (Totally Pure Opening))
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[A03-m**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 6.d3 c5
1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7
5.0-0 0-0 6.d3 c5 =
(TPOP: (Totally Pure Opening))
(7.Na3, 7.Nbd2, 7.h3, 7.Ne5, 7.e3)
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[A03-n**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 6.d3 c5
Pelikan retort: 7.Qe1
1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7
5.0-0 0-0 6.d3 c5 7.Qe1 +/=
(TPOP: (Totally Pure Opening))
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[A03-o**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 6.d3 c5
Liebert retort: 7.c3
1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7
5.0-0 0-0 6.d3 c5 7.c3?! =/+
(TPOP: (Totally Pure Opening))
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[A03-p**] - Bird's opening
Keinhofer-Gerschenkron var.: 2.Nf3 Nf6
Plater-Grynfeld system: 6.d3 c5 7.Nc3
1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7
5.0-0 0-0 6.d3 c5 7.Nc3! +/=
(TPOP: (Totally Pure Opening))
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[A03-q**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
1.f4 d5 2.Nf3 Nf6 3.e3 =
(QPOP: (Quasi Pure Opening))
(see also: D00) (3...c6, 3... Bf5)
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[A03-r**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Heral retort: 3...Nc6
1.f4 d5 2.Nf3 Nf6 3.e3 Nc6?! +/=
(TPOP: (Totally Pure Opening))
(4.d3, 4.Be2, 4.d4, 4.b3, 4.Bb5)
(WSIA: (White Significant Advantage))
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[A03-s**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Buckle retort: 3...e6
1.f4 d5 2.Nf3 Nf6 3.e3 e6 +/=
(QPOP: (Quasi Pure Opening))
(see also: D00) (4.d4: D00-TPOP)
(4.d3, 4.Nc3, 4.c4, 4.Be2)
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[A03-t**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Buckle retort: 3...e6
Bird-Paulsen system: 4.b3
1.f4 d5 2.Nf3 Nf6 3.e3 e6 4.b3 +/=
(TPOP: (Totally Pure Opening))
(4...g6, 4...b6, 4...Nbd7, 4...Nc6, 4...Bd6)
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[A03-u**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Buckle retort: 3...e6
Bird-Paulsen system: 4.b3 Be7
1.f4 d5 2.Nf3 Nf6 3.e3 e6 4.b3 Be7 (5.Bb2) +/=
(TPOP: (Totally Pure Opening))
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[A03-v**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Buckle retort: 3...e6
Thorold-Burn system: 4.b3 c5
1.f4 d5 2.Nf3 Nf6 3.e3 e6 4.b3 c5 (5.Bb2) +/=
(TPOP: (Totally Pure Opening))
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[A03-w**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Mieses retort: 3...Bg4
1.f4 d5 2.Nf3 Nf6 3.e3 Bg4 =
(QPOP: (Quasi Pure Opening))
(4.c4, 4.d4, 4.h3) (4.d4: D00-TPOP)
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[A03-x**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Mieses retort: 3...Bg4
Kipke-Zander system: 4.b3
1.f4 d5 2.Nf3 Nf6 3.e3 Bg4 4.b3
(e6) =
(TPOP: (Totally Pure Opening))
(4...g6, 4...Nc6, 4...c6, 4...c5, 4...Nbd7)
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[A03-y**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Mieses retort: 3...Bg4
Alekhine system: 4.Be2
1.f4 d5 2.Nf3 Nf6 3.e3 Bg4 4.Be2
(Nbd7) =
(TPOP: (Totally Pure Opening))
(4...c5, 4...c6, 4...Nc6, 4...Bxf3, 4...e6)
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[A03-z**] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Mason retort: 3...c5
1.f4 d5 2.Nf3 Nf6 3.e3 c5 =
(QPOP: (Quasi Pure Opening))
(see also: DOO)
(4.d3, 4.Bb5+, 4.Be2, 4.d4)
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[A03-a***] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Mason retort: 3...c5
Bird-Mason system: 4.b3
1.f4 d5 2.Nf3 Nf6 3.e3 c5 4.b3 =
(TPOP: (Totally Pure Opening))
(4...a6, 4...Bg4, 4...g6)
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1. «»
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[A03-b***] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Mason retort: 3...c5
Burn-Mason system: 4.b3 e6
1.f4 d5 2.Nf3 Nf6 3.e3 c5 4.b3 e6 =
(TPOP: (Totally Pure Opening))
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1. «»
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[A03-c***] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3
Mason retort: 3...c5
Williams-Harrwitz system: 4.b3 Nc6
1.f4 d5 2.Nf3 Nf6 3.e3 c5 4.b3 Nc6?! +/=
(TPOP: (Totally Pure Opening))
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[A03-d***] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3 g6
1.f4 d5 2.Nf3 Nf6 3.e3 g6! =/+
(QPOP: (Quasi Pure Opening))
(see also: D00)
(4.c3, 4.c4, 4.Nc3, 4.b4, 4.d3)
|
1. «»
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[A03-e***] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3 g6
Pelikan retort: 4.Be2
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.Be2 (Bg7) =/+
(TPOP: (Totally Pure Opening))
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[A03-f***] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3 g6
Pelikan retort: 4.Be2
Bird-Lasker line: 4...Bg7 5.0-0 0-0
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.Be2 Bg7
5.0-0 0-0 (6.d3) =/+
(TPOP: (Totally Pure Opening))
|
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[A03-g***] - Bird's opening
Keinhofer-Gerschenkron var.: 3.e3 g6
2th Pelikan retort: 4.d4
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.d4 =/+
(QPOP: (Quasi Pure Opening))
(see also: D00)
|
1. «»
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[A03-h***] - Bird's opening
Keinhofer-Gerschenkron var.: 4.b3
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.b3 (c5) =/+
(TPOP: (Totally Pure Opening))
(4...b6, 4...Bg4)
|
1. «»
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[A03-i***] - Bird's opening
Keinhofer-Gerschenkron variation
Main line: 4.b3 Bg7
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.b3 Bg7 =/+
(TPOP: (Totally Pure Opening))
(4...b6, 4...Bg4)
|
1. «»
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[A03-j***] - Bird's opening
Keinhofer-Gerschenkron variation
Main line: 5.Bb2 0-0
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.b3 Bg7
5.Bb2 0-0 =/+
(TPOP: (Totally Pure Opening))
|
1. «»
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[A03-k***] - Bird's opening
Keinhofer-Gerschenkron variation
Main line: 6.Be2 c5
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.b3 Bg7
5.Bb2 0-0 6.Be2 c5 =/+
(TPOP: (Totally Pure Opening))
|
1. «»
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[A03-l***] - Bird's opening
Keinhofer-Gerschenkron variation
Main line: 7.0-0 Nc6
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.b3 Bg7
5.Bb2 0-0 6.Be2 c5 7.0-0 Nc6 =/+
(TPOP: (Totally Pure Opening))
|
1. «»
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[A03-m***] - Bird's opening
Keinhofer-Gerschenkron variation
Main line: 8.Ne5 Qc7
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.b3 Bg7
5.Bb2 0-0 6.Be2 c5 7.0-0 Nc6 8.Ne5 Qc7 =/+
(TPOP: (Totally Pure Opening))
|
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[A03-n***] - Bird's opening
Keinhofer-Gerschenkron variation
Main line: 9.Nxc6 Qxc6
1.f4 d5 2.Nf3 Nf6 3.e3 g6! 4.b3 Bg7
5.Bb2 0-0 6.Be2 c5 7.0-0 Nc6 8.Ne5 Qc7
9.Nxc6 Qxc6 =/+
(TPOP: (Totally Pure Opening))
|
1. «»
«»
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