26 Jan 2020

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.d4 e6 4.e3 c5 5.Bb5+ Bd7 6.Bxd7+ Nbxd7)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.d4 e6 4.e3 c5 5.Bb5+ Bd7 6.Bxd7+ Nbxd7)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 Nf6 3.d4 e6 4.e3 c5 5.Bb5+ Bd7 6.Bxd7+ Nbxd7 A03 Bird's Opening with 1...d5 6...Qxd7 7.0-0 Bd6 7.0-0 Qb6 7...Rc8 8.Nc3 8.b3 deserves consideration. 8...Bd6 9.Ne5 Black is better. cxd4 9...Rc8 is more complex. 10.a4 a6 11.a5 Qc7 12.Bd2 0-0 10.exd4 White should play 10.Nxd7 Kxd7 11.exd4 10...Nxe5 11.fxe5 11.Na4 Nf3+ 12.Rxf3 11...Bxe5-+ 12.Ne2 12.Be3 Bd6 13.Rb1 12...Bd6 13.c3 13.Rb1 13...Be7 14.Nf4 0-0 15.Nh5 15.a4 15...Nxh5 16.Qxh5 g6 16...a5-+ 17.Rf2 Bd6 17.Qf3 Black should prevent Bh6. f6 18.Rf2 Kg7 18...Rf7 19.Be3 Qc6 19.Qh3 19.Re2 19...Rh8 19...h5 20.Bh6+= Kf7! 21.Be3
21.g4= keeps the balance. 21...Rag8 21...h6! 22.Re1 22.Bg5= 22...Bd8 Black should try 22...h5 23.Rfe2 23.Bg5 stays ahead. 23...Re8 23...h5! 24.Bc1 24.Bh6= 24...Qc6 24...h5 25.b3 25.Qh6= 25...Bb6 25...h6 26.Kh1 Better is 26.Rf2 26...Bc7 27.Rf1
27.Rf2 27...e5 27...h6! 28.Ref2 28.Bxh6 e5 28...f5 28.Bg5 f5 28...Re6= 29.Rfe1?
29.Ref2!± aiming for Rxf5+! Kg8 30.Bh6 29...e4? 29...h6!-+ 30.Be3 30.Bxh6 e4 30...e4 30.Bd2? 30.Bh6 30...Bd6? 30...h5-+ 31.Bg5 h4! 31.b4? 31.Rf2= and White has nothing to worry. 31...Qc7 32.a4 32.Rf1 32...Bf4 33.Be3 Bxe3 34.Rxe3 34.Qxe3 Kg7 35.Rf1 34...Kg7-+ 35.g3 Rc8 36.Rc1 Qd7 37.b5 Rc4 38.Qh4 Rxa4 39.Qf4 Re8 40.h4 Re7 41.Qg5 Qc7 42.h5
42...Re6 42...Rxd4! Strongly threatening ...Rd3. 43.Rf1 43.cxd4 Qxc1+ 43...Rd2 44.Rxf5 Qd6 45.h6+ Kg8 43.h6+? 43.hxg6 hxg6 44.Re2 43...Kf7 44.Rf1 intending Rxf5+! Rf6 45.Rb1 Ra2 46.Rc1 Qd6 47.c4 dxc4 48.Rxc4 f4 49.Rec3 fxg3 49...Rf5 50.Rc7+ Ke6 50.Rc7+ Ke6 51.Qg4+ Rf5 ( -> ...Rh2+) Avoid the trap 51...Kd5? 52.R7c5+ Qxc5 53.Rxc5+ Kxd4 54.Rc1+- 52.Qxe4+ Kf6 53.R3c6N 53.R3c5 Rf1# 0-1 (53) Kinnunen,T-Vierjoki,T (1749) Naantali 2011 53...Rf1# Accuracy: White = 16%, Black = 28%.
0–1
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TK1475Vierjoki,T18520–1

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