5 Jan 2020

A01 Nimzowitsch-Larsen Opening (1.b3 e5 2.Bb2 Nc6 3.Nf3 d6 4.d4)

A01 Nimzowitsch-Larsen Opening (1.b3 e5 2.Bb2 Nc6 3.Nf3 d6 4.d4)
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1.b3 e5 A01 Nimzo-Larsen Attack: Modern Variation 2.Bb2 Nc6 3.Nf3 d6 4.d4 A01 Nimzowitsch-Larsen Opening e4 5.d5 exf3 5...Nce7= 6.Ng5 e3 6.dxc6 bxc6 7.exf3 7.gxf3± d5 8.e4 7...Nf6 7...d5= 8.c4 8.Bd3!± 8...Be7 8...d5! keeps the upper hand. 9.Bd3± 0-0 9...Nh5 10.0-0 10.Qc2± 10...d5 10...Nd7 11.Nc3N 11.Qc2± h6 12.Nd2 a5 13.Rfd1 a4 14.bxa4 Qd6 15.Rab1 Be6 16.Nf1 Nd7 17.Ng3 Bf6 18.cxd5 cxd5 19.Bh7+ Kh8 20.Ne4 Qf4 21.Nxf6 Nxf6 22.Rd4 Qd6 23.Bd3 c5 24.Ba3 Rfc8 25.Rb5 Nd7 26.Rh4 Fry,P (1870) -Choong,M Cammeray 2011 0-1 (43) 11...d4!= 12.Ne4 12.Na4!± 12...c5 13.Nxf6+ Bxf6 14.Be4 Rb8 15.Qd3 15.Qd2= 15...g6 15...h6 16.f4 16.Rfe1= 16...Bb7 17.Rad1 17.Bxb7= Rxb7 18.g3 17...Re8 17...Bxe4 18.Qxe4 Re8 18.Bxb7= Rxb7 19.f5 Rb6 20.fxg6 hxg6 21.Bc1 21.Rde1= 21...Rbe6 21...Ra6 22.Bf4 22.Bd2= 22...Kg7 22...Bg5! 23.Bxg5 Qxg5 23.h3 23.Bd2!= keeps the balance. 23...Bg5 23...Re2 24.Bd2 Bg5 24.Bh2 24.Bxg5! Qxg5 25.b4 24...Qe7 24...c6 25.a3 Kg8 25.b4 25.a3 25...Bf6! 26.b5 Re2 27.a4 Qd7 27...Be5-+ 28.Bxe5+ Qxe5 28.a5 White should play 28.Bf4 28...c6? 28...Be5! 29.Rd2 Re4! 29.b6= axb6 30.axb6 Rb2? 30...Be5= 31.Bc7? 31.Rb1+- Ree2 32.Bf4 31...Bd8! 32.Qa3 Rb4 33.Bxd8 33.Bf4 might work better. 33...Rxd8? 33...Qxd8-+ 34.f4 Qxb6 34.Rb1! Rxc4 34...Qd6! 35.b7 35.Qg3!= remains equal. Qb7 36.Qe5+ f6 37.Qe6 35...Rb8 35...Qd6! 36.Rb3 Rb4 36.Qa7 Qc7 37.Rb3 White should try 37.Rfd1 37...Rb4? 37...Qd6!-+ White must now prevent ... Rb4. 38.Rfb1 Rc2 38.Rxb4= cxb4 39.Qxd4+ Endgame KQR-KQR Kg8 Black puts up resistance 40.Qxb4 Rxb7 41.Qg4 c5 42.h4 Qd7 43.Qg5 43.Qxd7 is more complex. Rxd7 44.Rc1 Rd4 45.g3 c4 46.Ra1 43...Rc7 44.h5 Kg7 45.hxg6 fxg6 46.Qe5+ Kh7 47.Re1 Strongly threatening Re3. c4? 47...Kg8= 48.Re3!+- Kg8 49.g3? White has to play 49.Rh3+- Qxh3 50.gxh3 49...Qg7? 49...Qc6= 50.Qe8+ Kh7
51.Re4? 51.g4!+- is the precise move to win. aiming for Rh3+. Qh6 52.Kg2 51...Qa1+? 51...g5± 52.Kg2 Threatening mate with Rh4+. Kg7 53.Rh4 Qa7 54.Qh8+ Kf7 55.Rf4+ 55.Qe5 Qb7+ 56.f3 Re7 57.Rh7+ Ke8 58.Qh8+ Kd7 59.Rxe7+ Kxe7 60.Qg7+ Ke8 61.Qxb7 55...Ke6 56.Qf6+ Kd7 57.Rd4+ Kc8 58.Rd8+ Kb7 59.Qf3+ Kb6 60.Rd6+ Kb5 intending ... Qb7. 61.Qd5+? 61.Qe2+- 61...Rc5? 61...Kb4± 62.Qe6 62.Qe4+- is more deadly. White wants to mate with Qb1+. Rf5 63.f4 63.Rxg6 Rxf2+ 64.Kh3 Qh7+ 65.Kg4 Qd7+ 66.Kh4 Rh2+ 67.Kg5 Qd2+ 68.Kg4 Qd1+ 69.Kf4 Rf2+ 70.Kg5 Qd2+ 71.Kh4 Rh2+ 72.Kg4 Qd1+ 73.Kf4 Rf2+ 74.Kg5 Qd2+ 75.Kh4 Rh2+ 76.Kg4 63...Qa2+ 64.Kh3 Rh5+ 65.Kg4 62...Qb7+
62...Qa8+± is a better defense. 63.f3 Qa2+ 64.Kh3 Qa8 63.Kg1? 63.f3!+- Qc7 64.Qe8+ Ka5 65.Qe1+ c3 66.Qa1+ Kb4 67.Qb1+ Ka3 68.Rb6 Qxb6 69.Qxb6 63...Rh5= 64.Qd7+? 64.Kf1= 64...Qxd7-+ 65.Rxd7 KR-KR Kb4? 65...c3 66.Rd1 c2 66.Rd4? 66.Kf1 c3 67.Ke2 66...Rc5 67.f4 - 67.Kf1-+ Kb3 68.Rd7 67...Kb3 Black mates. 68.Kf2 c3 69.Ke2 c2 70.Rd3+ Kb2 71.Rd6 c1Q 72.Kf3 Rc3+ 73.Kg4 Qh1 74.Kg5 Qh5+ 75.Kf6 Rc5 76.Kg7 Rc7+ 77.Kf6 Qf5# Accuracy: White = 23%, Black = 24%.
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WhiteEloWBlackEloBRes
Kojjootti1549Vierjoki,T15580–1
Kojjootti1549Vierjoki,T15581–0
Kojjootti1552Vierjoki,T15311–0

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