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OPENINGS THEORY
- ECO CODES BASE -
- A01 -
NIMZOVICH-LARSEN ATTACK
(1.b3)
[A01-a] - Nimzovich-Larsen attack
1.b3 =
(SMOP: (Strongly Mixed Opening))
(see also: A02, A03, A04, A05, A06, A07, A08, A10, A11, A12, A13,
A14, A15, A20, A30, A35, A36, A38, A48, A49, A87, A96, B02, B20,
B50, C20, C47, D00, D04, D05, D11, D32, D34, D77, D78, D94,
E08, E14, E17, E60, E61, E66, E67, E68)
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[AO1-b] - Nimzovich-Larsen attack
Niamdorzi retort: 1...Nc6
1.b3 Nc6?! (2.Bb2, 2.Nf3) +/=
(QPOP: (Quasi Pure Opening))
(see also: A03, A06, D02)
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[AO1-c] - Nimzovich-Larsen attack
Expel retort: 1...e6
1.b3 e6?! (2.Bb2) +/=
(RMOP: (Relatively Mixed Opening))
(see also: A02, A03, A04, A05, A06, A13, A15, A30, A47,
C00, D05, D34, E14)
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[AO1-d] - Nimzovich-Larsen attack
Dutch variation: 1...f5
1.b3 f5 (2.Nf3) =
(RMOP: (Relatively Mixed Opening))
(see also: A02, A04, A10, A80, A81, A84, A87, A88, A95)
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[AO1-e] - Nimzovich-Larsen attack
Elemberg retort: 1...g6
1.b3 g6 (2.Bb2) =
(RMOP:) (see also: A02, A03, A05, A07, A11, A12, A15, A30, A38,
A48, A49, B02, E60)
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[AO1-f] - Nimzovich-Larsen attack
Symetrical variation: 1...b6
1.b3 b6?! (2.Bb2) +/=
(RMOP:) (see also: A02, A05, A13, A14, A30, A47, B20, D05, E14,
E17, E61)
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[AO1-g] - Nimzovich-Larsen attack
Kinzel retort: 1...d6
1.b3 d6?! (2.Bb2) +/=
(RMOP:) (see also: A02, A05, A15, A16, A21, A30, A46, A48, A49,
A80, A87, E60, E61, E65)
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[AO1-h] - Nimzovich-Larsen attack
English variation: 1...c5
1.b3 c5 (2.Bb2) =
(SMOP:) (see also: A02, A03, A04, A05, A06, A08, A13, A14, A30,
A35, A36, B20, B50, D04, D30, D34, E14, E60)
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[AO1-i] - Nimzovich-Larsen attack
English variation: 1...c5
Nimzovich-Saemisch system: 2.Bb2 d5
1.b3 c5 2.Bb2 d5 =
(RMOP: (Relatively Mixed Opening))
(see also: A03, A06, A08, A13, D02, D04, D05, D48)
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[AO1-j] - Nimzovich-Larsen attack
Indian variation: 1...Nf6
1.b3 Nf6 (2.Bb2) +/=
(SMOP:) (see also: A02, A03, A05, A06, A08, A11, A12, A13, A14,
A15, A30, A33, A35, A38, A48, A49, B02, D02, D04, D30, D32, D34,
D45, D78, D94, E07, E08, E14, E60, E61, E65, E66, E67, E68)
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[AO1-k] - Nimzovich-Larsen attack
Indian variation: 1...Nf6
Canal Mueller system: 2.Bb2 d6
1.b3 Nf6 2.Bb2 d6 (3.g3) +/=
(SMOP:) (see also: A02, A15, A48, A49, E60, E65, E66, E67)
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[AO1-l] - Nimzovich-Larsen attack
Indian variation: 1...Nf6
Mengarini-Donovan system: 2.Bb2 e6
1.b3 Nf6 2.Bb2 e6 +/=
(SMOP:) (see also: A02, A03, A05, A06, A13, A14, A15, A30,
A47, B20, D05, D30, D32, D34, E07, E08, E14, E17)
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[AO1-m] - Nimzovich-Larsen attack
Indian variation: 1...Nf6
Romi-Nogues Acuna system: 2.Bb2 g6
1.b3 Nf6 2.Bb2 g6 =
(SMOP:) (see also: A02, A03, A05, A11, A15, A30, A35, A38, A48,
A46, A49, B02, B04, D04, D78, D94, E60, E67)
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[AO1-n] - Nimzovich-Larsen attack
Indian variation: 1...Nf6
Olly-Lee system: 2.Bb2 d5
1.b3 Nf6 2.Bb2 d5 =
(RMOP:) (see also: A03, A06, A07, A08, A11, A12, A13, A14,
D04, D05, D11, D32, E01, E14)
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[AO1-o] - Nimzovich-Larsen attack
Classical variation: 1...d5
1.b3 d5 (2.d4) =
(RMOP:) (see also: A03, A05, A06, A07, A08, A12, A13, A14,
A93, D00, D02, D04, D05, D11, D12, D30, D46, D77, E01, E14)
(2.f4: A03-TPOP)
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[AO1-p] - Nimzovich-Larsen attack
Classical variation: 1...d5
Owen retort: 2.e3
1.b3 d5 2.e3
(RMOP:) (see also: A03, A06, A12, A13, D04, D05, D12, D30,
E14)
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[AO1-q] - Nimzovich-Larsen attack
Classical variation: 1...d5
Olly retort: 2.Bb2
1.b3 d5 2.Bb2 =
(RMOP:) (see also: A03, A06, A07, A08, A11, A12, A13, A14,
A30, D04, D05, D11, D30, D32, D46, E14) (2...Nf6: [A01-n])
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[AO1-r] - Nimzovich-Larsen attack
Classical variation: 1...d5
Olly retort: 2.Bb2
Larsen-Saemisch system: 2...Bf5
1.b3 d5 2.Bb2 Bf5 =
(RMOP:) (see also: A03, A06, A07, A12, D04, D11, D12)
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[AO1-s] - Nimzovich-Larsen attack
Classical variation: 1...d5
Olly retort: 2.Bb2
Bronstein-Tal system: 2...Bg4
1.b3 e5 2.Bb2 Bg4! =/+
(RMOP:) (see also: A03, A06, A07, A12, D11)
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[AO1-t] - Nimzovich-Larsen attack
Classical variation: 1...d5
Olly retort: 2.Bb2
Duenmann-Von Holzhausen system: 2...c5
1.b3 d5 2.Bb2 c5!? =/+
(RMOP:) (see also: A03, A06, A13, A14, D04, D05, D32, D48)
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[AO1-u] - Nimzovich-Larsen attack
Classical variation: 1...d5
Olly retort: 2.Bb2
Duenmann-Von Holzhausen system: 3.e3
1.b3 d5 2.Bb2 c5!? 3.e3 =
(RMOP:) (see also: A03, A06, A13, A14, D04, D05, D32, D48)
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[AO1-v] - Nimzovich-Larsen attack
Modern variation: 1...e5
1.b3 e5 =
(QPOP: (Quasi Pure Opening))
(see also: A05, A15, A20, A21, A36, A38, C20, C47, E60, E61, E67,
E68)
(2.d3, 2.g3, 2.e4)
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[AO1-w] - Nimzovich-Larsen attack
Modern variation: 1...e5
Owen retort: 2.e3
1.b3 e5 2.e3?! =/+
(TPOP: (Totally Pure Opening))
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[AO1-x] - Nimzovich-Larsen attack
Modern variation: 1...e5
Paulsen retort: 2.c4
1.b3 e5 2.c4 =
(QPOP:) (see also: A15, A20, A29, A30, A49, E60)
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[AO1-y] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2
1.b3 e5 2.Bb2 =
(QPOP:) (see also: A05, A15, A21, A29, A36, A38, A49,
E60, E61, E67, E68) (2...Qe7, 2...d5, 2...e4, 2...f6)
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[AO1-z] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2
Fonrobert-Borges system: 2...d6
1.b3 e5 2.Bb2 d6 =
(QPOP: (Quasi Pure Opening))
(see also: A05, A15, A21, E60, E61)
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[AO1-a*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2
Fonrobert-Borges system: 3.e3
1.b3 e5 Bb2 d6 3.e3 =
(QPOP: (Quasi Pure Opening))
(see also: A05, A15, A21, E60, E61)
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[AO1-b*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2
Bronstein-Kapengut system: 3.e3 Nc6
1.b3 e5 2.Bb2 d6 3.e3 Nc6 +/=
(TPOP: (Totally Pure Opening))
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[AO1-c*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2
Bronstein-Kapengut system: 3.e3 Nc6 4.c4
1.b3 e5 2.Bb2 d6 3.e3 Nc6 4.c4 =
(TPOP: (Totally Pure Opening))
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[AO1-d*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2
Bellon Lopez-Pares Vives system: 4.Bb5
1.b3 e5 2.Bb2 d6 3.e3 Nc6 4.Bb5?! =/+
(TPOP: (Totally Pure Opening))
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[AO1-e*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6
1.b3 e5 2.Bb2 Nc6 =
(QPOP:) (see also: A15) (3.e4, 3.g3, 3.Nf3)
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[AO1-f*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6
Bogoljubov-De Moura system: 3.c4
1.b3 e5 2.Bb2 Nc6 3.c4 =
(QPOP:) (see also: A15)
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[AO1-g*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6
Larsen-Spassky system: 3.c4 Nf6
1.b3 e5 2.Bb2 Nc6 3.c4 Nf6 =
(QPOP:) (see also: A15)
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[AO1-h*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6
Larsen-Spassky system: 3.c4 Nf6 4.e3
1.b3 e5 2.Bb2 Nc6 3.c4 Nf6 4.e3 =
(TPOP: (Totally Pure Opening))
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[AO1-i*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6
Larsen-Spassky system: 4...d5 5.cxd5
1.b3 e5 2.Bb2 Nc6 3.c4 Nf6 4.e3 d5 5.cxd5 =
(TPOP: (Totally Pure Opening))
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[AO1-j*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6
Larsen-Spassky system: 5...Nxd5 6.a3
1.b3 e5 2.Bb2 Nc6 3.c4 Nf6 4.e3 d5 5.cxd5 Nxd5 6.a3 =
(TPOP: (Totally Pure Opening))
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[AO1-k*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6
Larsen-Spassky system: 6...Bd6 (7.Qc2)
1.b3 e5 2.Bb2 Nc6 3.c4 Nf6 4.e3 d5 5.cxd5 Nxd5 6.a3 Bd6 (7.Qc2)
=/unclear
(TPOP: (Totally Pure Opening))
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[AO1-l*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6 3.e3
1.b3 e5 2.Bb2 Nc6 3.e3 =
(TPOP:) (3...f5, 3...Bc5, 3...a6, 3...g6)
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[AO1-m*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6 3.e3
Breyer line: 3...d6
1.b3 e5 2.Bb2 Nc6 3.e3 d6?! +/=
(TPOP: (Totally Pure Opening))
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[AO1-n*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6 3.e3
Breyer line: 3...d6
Ljubovnic retort: 4.Nf3
1.b3 e5 2.Bb2 Nc6 3.e3 d6?! 4.Nf3 +/=
(TPOP: (Totally Pure Opening))
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[AO1-o*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6 3.e3
Breyer line: 3...d6
Velickovic retort: 4.c4
1.b3 e5 2.Bb2 Nc6 3.e3 d6?! 4.c4 =
(TPOP: (Totally Pure Opening))
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[AO1-p*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6 3.e3
Breyer line: 3...d6
Bellon Lopez retort: 4.Bb5
1.b3 e5 2.Bb2 Nc6 3.e3 d6?! 4.Bb5?! =/+
(TPOP: (Totally Pure Opening))
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[AO1-q*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6 3.e3
Van Geet-De Rool system: 3...d5
1.b3 e5 2.Bb2 Nc6 3.e3 d5 =/+
(TPOP: (Totally Pure Opening))
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[AO1-r*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6 3.e3
Van Geet-De Rool system: 3...d5 4.Bb5
1.b3 e5 2.Bb2 Nc6 3.e3 d5 =/+
(TPOP: (Totally Pure Opening))
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[AO1-s*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6 3.e3
Van Geet-De Rool system: 4.Bb5 Bd6
1.b3 e5 2.Bb2 Nc6 3.e3 d5 4.Bb5 Bd6 =
(TPOP: (Totally Pure Opening))
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[AO1-t*] - Nimzovich-Larsen attack
Bellon Lopez variation: 2.Bb2 Nc6 3.e3
Van Geet-De Rool system: 4.Bb5 Bd6 5.f4
1.b3 e5 2.Bb2 Nc6 3.e3 d5 4.Bb5 Bd6 5.f4! +/=
(TPOP: (Totally Pure Opening))
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[AO1-u*] - Nimzovich-Larsen attack
Bellon Lopez variation: 3.e3 Nf6
1.b3 e5 2.Bb2 Nc6 3.e3 Nf6 =
(TPOP:) (4.d4, 4.Nf3)
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[AO1-v*] - Nimzovich-Larsen attack
Bellon Lopez variation: 3.e3 Nf6
Larsen retort: 4.c4
1.b3 e5 2.Bb2 Nc6 3.e3 Nf6 4.c4 =
(TPOP: (Totally Pure Opening))
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[AO1-w*] - Nimzovich-Larsen attack
Bellon Lopez variation: 3.e3 Nf6 4.Bb5
1.b3 e5 2.Bb2 Nc6 3.e3 Nf6 4.Bb5 =
(TPOP: (Totally Pure Opening))
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[AO1-x*] - Nimzovich-Larsen attack
Bellon Lopez variation: 4.Bb5 d6
1.b3 e5 2.Bb2 Nc6 3.e3 Nf6 4.Bb5 d6 +/=
(TPOP: (Totally Pure Opening))
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[AO1-y*] - Nimzovich-Larsen attack
Bellon Lopez variation: 4.Bb5 d6 5.Ne2
1.b3 e5 2.Bb2 Nc6 3.e3 Nf6 4.Bb5 d6 5.Ne2 +/=
(TPOP: (Totally Pure Opening))
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[AO1-z*] - Nimzovich-Larsen attack
Bellon Lopez variation: 5.Ne2 Bd7
1.b3 e5 2.Bb2 Nc6 3.e3 Nf6 4.Bb5 d6 5.Ne2 Bd7
(6.0-0) +/=
(TPOP: (Totally Pure Opening))
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