OPENINGS THEORY
- ECO CODES BASE -

- E43 -

[E43-a] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) (5.Nge2 (see: E44))

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[E43-b] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Qf3 (Nc6)

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[E43-c] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.a3 (Bxc3+)

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[E43-d] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.a3 Bxc3+ 6.bxc3 (FM: (forced move)) (c5 (see: E26))

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[E43-e] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.a3 Bxc3+ 6.bxc3 (FM: (forced move)) 0-0 (7.Ne2)

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[E43-f] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.a3 Bxc3+ 6.bxc3 (FM: (forced move)) 0-0 7.Bd3 (FL: (free line)) +/=

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[E43-g] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd2 +/=

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[E43-h] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd2 0-0 +/=

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[E43-i] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd2 Bd7 +/=

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[E43-j] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.f3 (c5 (see: E20)) +/=

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[E43-k] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) =/unclear

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[E43-l] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) c5 =/unclear

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[E43-m] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) c5 6.Bd3 (0-0 (see: E50)) =/unclear

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[E43-n] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) c5 6.Bd3 Bb7 =/unclear

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[E43-o] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) c5 6.Bd3 Bb7 7.0-0 =/unclear

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[E43-p] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) Ne4

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[E43-q] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) Ne4 6.Qc2 (Bb7) =

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[E43-r] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) 0-0 =

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[E43-s] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) 0-0 6.Bd2 =

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[E43-t] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) 0-0 6.Bd2 Bb7 =

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[E43-u] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) 0-0 6.Bd2 Bb7 7.Be2 (WLBF: d2,e2 (White lower bishops formation)) =/unclear

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[E43-v] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) 0-0 6.Bd2 Bb7 7.Bd3 (WIBF: d2,d3 (White intermadiate bishops for- mation)) =/unclear

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[E43-w] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Nf3 (TNBF: (three Knights basic formation)) 0-0 6.Bd2 Bb7 7.Bd3 (WIBF: d2,d3 (White intermadiate bishops for- mation)) d5 (QGL: c4-d4 (Queen's gambit lever)) =/unclear

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[E43-x] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) (c5 (see: E50))+(d5 (see: E52)

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[E43-y] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) 0-0 =/unclear

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[E43-z] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) 0-0 6.Nge2 =/unclear

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[E43-a*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) 0-0 6.Nge2 d5 =/unclear

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[E43-b*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) 0-0 6.Nge2 Bb7 =/unclear

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[E43-c*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) 0-0 6.Nf3 =/unclear

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[E43-d*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 (TRAP: 6.Bd2?? Bxg2 or 6.Qc2?? Bxg2))

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[E43-e*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nge2 (c5) =

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[E43-f*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nge2 0-0 =

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[E43-g*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nge2 Bxg2 7.Rg1 =

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[E43-h*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nge2 Bxg2 7.Rg1 Be4 =

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[E43-i*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.f3 =

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[E43-j*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.f3 Bxc3+ 7.bxc3 (d6) =

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[E43-k*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.f3 d5 (QGL: c4-d5))

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[E43-l*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.f3 0-0 =

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[E43-m*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.f3 0-0 7.a3 =

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[E43-n*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.f3 0-0 7.Nge2 =

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[E43-o*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.f3 c5 (TL: d4-c5 Tarrasch's lever)) =

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[E43-p*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.f3 c5 (TL: d4-c5 Tarrasch's lever)) 7.a3 =

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[E43-q*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.f3 c5 (TL: d4-c5 Tarrasch's lever)) 7.Nge2 =

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[E43-r*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation))

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[E43-s*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) d5 =

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[E43-t*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Bxc3+ 7.bxc3 (FM: (forced move)) (0-0)

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[E43-u*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Bxc3+ 7.bxc3 (FM: (forced move)) d6 (QDAL: c4,d4-d6,e6 (Queen double airlock)) (8.0-0) =

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[E43-v*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) c5 (TL)

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[E43-w*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) c5 (TL) 7.0-0 0-0 =

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[E43-x*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) c5 (TL) 7.0-0 0-0 8.a3 =

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[E43-y*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) c5 (TL) 7.0-0 0-0 8.Bd2 =

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[E43-z*] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) c5 (TL) 7.0-0 0-0 8.Na4!? =

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[E43-a**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4

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[E43-b**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.Qc2 (Bxc3+) +/=

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[E43-c**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.Qc2 f5! =

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[E43-d**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.0-0! +/=

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[E43-e**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.0-0! Nxc3?! 8.bxc3 Bxc3 9.Rb1 /unclear

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[E43-f**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.0-0! f5 (8.Ne2) +/=

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[E43-g**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.0-0! f5 8.Qc2 +/=

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[E43-h**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.0-0! f5 8.Qc2 Bxc3 9.bxc3 0-0 (10.Ne1) +/=

1. «»

[E43-i**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.0-0! f5 8.Qc2 Bxc3 9.bxc3 0-0 10.Nd2 (Qh4) +/=

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[E43-j**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.0-0! Bxc3 8.bxc3 (f5) =

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[E43-k**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) Ne4 7.0-0! Bxc3 8.bxc3 0-0 =

1. «»

[E43-l**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0

1. «»

[E43-m**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.Qc2 =

1. «»

[E43-n**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.Bd2 (WIBF: d2,d3 (White inter- mediate Bishops formation)) =

1. «»

[E43-o**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.Bd2 (WIBF: d2,d3 (White inter- mediate Bishops formation)) d5 =

1. «»

[E43-p**] - NID: Nimzo-Indian: Fischer variation (4...b6) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 (d5 (see: E52)) =/unclear

1. «»

[E43-q**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) =/unclear

1. «»

[E43-r**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) 8.Qe2 =/unclear

1. «»

[E43-s**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) 8.a3 (Bxc3) =/unclear

1. «»

[E43-t**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) 8.Bd2 (WIBF: White intermediate Bishops formation)) =/unclear

1. «»

[E43-u**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) 8.Bd2 (WIBF: White intermediate Bishops formation)) d6 (QDAL: (Queen double airlock)) =/unclear

1. «»

[E43-v**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) 8.Bd2 (WIBF: White intermediate Bishops formation)) cxd4 +/=

1. «»

[E43-w**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) 8.Na4! (Qe7) +/=

1. «»

[E43-x**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) 8.Na4! cxd4 (9.a3) +/=

1. «»

[E43-y**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) 8.Na4! cxd4 9.exd4 Be7 +/=

1. «»

[E43-z**] - NID: Nimzo-Indian: Fischer, main line (7...c5) 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 (WWS: (White wide spectrum)) 5.Bd3 (FL: b2-h7 (free line)) Bb7 6.Nf3 (TNBF: (three Knights basic formation)) 0-0 7.0-0 c5 (TL: (Tarrasch's lever)) 8.Na4! cxd4 9.exd4 Re8 +/=

1. «»

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