31 Jan 2020

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.g3 Nc6 4.Bg2 g6 5.O-O Bg7 6.d3 Nf6 7.Nc3 O-O 8.e4 dxe4 9.dxe4)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.g3 Nc6 4.Bg2 g6 5.O-O Bg7 6.d3 Nf6 7.Nc3 O-O 8.e4 dxe4 9.dxe4)
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1.f4 1.g3 g6 2.Bg2 Bg7 3.f4 d5 4.Nf3 1-0 (41) Ossa,O (2234)-Florez,L (2067) Cali 2017 1...d5 A03 Bird Opening: Dutch Variation 1...Nf6 2.Nf3 c5 2...g6 3.g3 Bg7 4.Bg2 1-0 (37) Reissfelder,M-Lauer,M Waldshut 1991 3.g3 g6 4.Bg2 Bg7 5.0-0 0-0 6.d3 d5 7.Nc3 1/2-1/2 (32) Bombin Pinera, D-Miras,E Asturias 1996 2.Nf3 c5 2...Nf6 3.g3 g6 4.Bg2 Bg7 5.0-0 0-0 6.d3 1-0 (32) Rodriguez Vila,A (2533)-Sega,C (2235) Santos 2008 3.g3 Nc6 4.Bg2 g6 5.0-0 Bg7 6.d3 Nf6 7.Nc3 0-0 8.e4 dxe4 9.dxe4 A03 Bird's Opening with 1...d5 Bg4 9...Qxd1= 10.Rxd1 e5 10.e5± 10.Be3 Qa5 11.e5 11.Qe1 Rfd8 12.e5 Ne8 13.h3 Bf5 14.Qf2 Qb4 15.Rab1 Nd4 16.a3 Qc4 17.Nd2 Qa6 18.Nde4 b6 19.g4 Bd7 20.Rfd1 Rac8 21.Bxd4 cxd4 22.Rxd4 Bc6 23.Rbd1 Rxd4 24.Rxd4 f6 25.Bf1 Qb7 Ossa,O (2234)-Florez,L (2067) Cali 2017 1-0 (41) 11...Rad8 12.Qe1 Ne8 13.Qf2 Bxf3 14.Bxf3 Nd4 15.Bxb7 Qb5 16.Bg2 Qxb2 17.Ne4 Qa3 18.c3 Ne6 19.Nxc5 N8c7 20.c4 Rb8 21.Nd7 Rb2 22.Bc1 Rxf2 23.Bxa3 Rxf1+ 24.Kxf1 Rd8 Rodriguez Vila,A (2533)-Sega,C (2235) Santos 2008 1-0 (32) 10...Nd7 10...Qxd1! 11.Rxd1 Nh5 11.Be3 White should try 11.h3+- Bf5 12.g4 11...Qb6N White is slightly better. 11...Qa5 12.h3 Bxf3 13.Qxf3 Nb6 14.Qf2 Nd4 15.Ne4 Nc4 16.Bxd4 cxd4 17.Qxd4 Rac8 18.b3 Rfd8 19.Qf2 Nd2 20.Rfd1 Rxc2 21.a3 Rd3 22.b4 Qd8 23.Rxd2 Rdxd2 24.Nxd2 Rxd2 25.Qxa7 Qd3 26.Kh2 Bombin Pinera,D-Miras,E Asturias 1996 1/2-1/2 (32) 11...Rc8 12.Ne4 Qa5 13.c3 Rfd8 14.Qc2 b6 15.a4 Ndb8 16.h3 Bxf3 17.Bxf3 Qa6 18.Rfd1 Rxd1+ 19.Rxd1 Rd8 20.Rxd8+ Nxd8 21.b4 Qc8 22.Bg4 Qc7 23.bxc5 bxc5 24.Nxc5 Ndc6 25.Qd3 Qa5 26.Bf3 Reissfelder,M-Lauer,M Waldshut 1991 1-0 (37) 12.Na4 12.b3± 12...Qb5 12...Qa5!= remains equal. 13.b3 Rad8 13.Nd4?
13.b3!± stays on course. 13...cxd4-+ Worse is 13...Bxd1 14.Nxb5 Be2 15.Nac3 14.Qxg4 dxe3 15.Nc3 Qxb2 16.Qxd7 16.Nd5 Nb6 17.Qe2 16...Qxc3 17.Qxb7 Rac8 18.Rab1 e2 19.Rfe1 Nd4 20.Rxe2 Nxe2+ 21.Kf2 Qxc2 21...Qd4+ - 22.Ke1 Rxc2 23.Qb3 Rfc8 24.Rd1 Qg1+ 25.Bf1 Nd4 26.Qxf7+ Kxf7 27.e6+ Kg8 28.Rd2 Qe3+ 29.Be2 Nf3+ 30.Kf1 Qg1# 22.Rb2 Black is clearly winning. Qc5+ 23.Kxe2 Rfd8
( -> ...Qc4+) 24.Qb3 Qc4+ 25.Qxc4 Rxc4 26.Bf1 Ra4 27.Kf3 e6 28.Kg4 h5+ 29.Kg5 Rd1 30.Be2 Rh1 31.Bf3 Rf1 32.Bg2 Ra1 33.g4 hxg4 34.h4 R1xa2 35.Rb8+ Kh7 36.Bc6 R4a3 Time forfeit. Accuracy: White = 18%, Black = 22%. 0–1
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sorush_13851846Vierjoki,T18660–1
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.d3 Nf6)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.d3 Nf6)
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1.f4 d5 A03 Bird Opening: Dutch Variation 1...c5 2.Nf3 Nf6 3.d3 0-1 (26) Schlueter,W (2245)-Podlesnik,B (2345) Aosta 1988 2.Nf3 c5 3.d3 Nf6 A03 Bird's Opening with 1...d5 4.Nc3 4.e3 Nc6 5.Be2 e6 6.0-0 Bd6 7.Qe1 e5 8.fxe5 Nxe5 9.h3 Qe7 10.d4 Nxf3+ 11.Bxf3 Bc7 12.Qf2 0-0 13.Nc3 Be6 14.e4 dxe4 15.Nxe4 Nxe4 16.Bxe4 cxd4 17.Bxb7 Rab8 18.Bf3 Qd6 Schlueter,W (2245)-Podlesnik,B (2345) Aosta 1988 0-1 4...d4 5.Ne4 Nxe4N Better is 5...Nc6 5...Nd5 6.c4 dxc3 7.bxc3 e6 8.c4 Nf6 9.Nxf6+ Qxf6 10.Bb2 Qxb2 0-1 (10) Mikulaj,S-Jerbic,R Cakovec 2011 6.dxe4 Nc6 7.Ne5?
7.e3± and life is bright. 7...Nxe5 8.fxe5 Black is better. g6 9.e3 Bg7 10.exd4 cxd4 11.Bc4 11.Bb5+ Bd7 12.Bxd7+ Qxd7 13.Bf4 11...Bxe5 11...0-0-+ 12.Bf4 Qa5+ 13.Qd2 Qc5 12.0-0 12.Qd3 12...0-0 12...f6-+ and Black stays clearly on top. 13.Bh6 Qc7 13.Bh6 Bg7 14.Bg5?
14.Bxg7= and White is okay. Kxg7 15.c3 14...Qd6-+ 15.Qf3 Be6 16.Bd3 b6 17.Rad1 17.a4 17...Rac8 Inferior is 17...Bxa2 18.b3= 18.c4? 18.Bf4 Be5 19.g3 18...Bxc4 19.Bxc4 Rxc4 20.Rd3 e5 21.h4 Rc2 22.h5 Rxb2? 22...h6-+ 23.Rd2 Rc6 23.h6 Bh8 Wrong is 23...Rxa2? 24.hxg7 Kxg7 25.Bf6+ 25.Qh3 h5± 25...Kg8 26.Qh3+- 24.Ra3? 24.Bc1 was the only chance. Rxa2 25.Ba3 Rxa3 26.Rxa3 24...a5-+ 25.Qh3 Rc8?? 25...Rc2-+ 26.Raf3 b5 26.Qh4?? 26.Qxc8++- Qf8 27.Rc1 26...Rcc2 27.Rf2 Rxf2 28.Qxf2 Rxf2 29.Kxf2 Qxa3 Normal. Accuracy: White = 19%, Black = 40%. 0–1
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Vaduly1434Vierjoki,T17990–1
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.b3 c5 3.Bb2 Nf6 4.e3 e6 5.Nf3 Be7 6.Ne5)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.b3 c5 3.Bb2 Nf6 4.e3 e6 5.Nf3 Be7 6.Ne5)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.b3 c5 3.Bb2 Nf6 4.e3 e6 5.Nf3 Be7 6.Ne5 A03 Bird's Opening with 1...d5 6.c4= 6...0-0 7.d3 7.Bd3= Nc6 8.Nxc6 bxc6 9.g4 Qb6 10.g5 Ne4 11.Nc3 f5 12.gxf6 Bxf6 13.Nxe4 dxe4 14.Bxf6 exd3 15.Bc3 dxc2 16.Qxc2 Ba6 17.Rg1 Rf7 18.Qe4 Re8 19.Qe5 g6 20.Qh8# 1-0 (20) Vocaturo,D (2383)-Brunello,S (2455) playchess.com INT 2007 7.Be2 Nc6 8.Nxc6 bxc6 9.0-0 Bd7 10.Qe1 Qb6 11.Kh1 c4 12.Rf3 cxb3 13.axb3 c5 14.d3 Ne8 15.e4 dxe4 16.dxe4 Bc6 17.Bd3 f5 18.Rg3 fxe4 19.Ra6 Qd8 20.Rxc6 exd3 21.Rxd3 Qb8 Pruesse,H (2073)-Betke,A (1650) Pfarrkirchen 2017 1-0 7...Nc6N 7...d4 8.e4 Bd6 7...Nbd7 8.Nd2 8.Nxd7 Nxd7 9.Be2 Bf6 10.d4 b6 11.Bd3 Qc7 12.c3 Bb7 13.Nd2 Rac8 14.0-0 cxd4 15.exd4 g6 16.Qe2 Bg7 17.a4 a5 18.Nb1 Nf6 19.Nd2 Rfe8 20.Rac1 Qd8 21.g3 Rc7 22.Kf2 Nd7 Grishin,P (2135)-Baiburin,I (2010) Sterlitamak 2010 1/2-1/2 (45) 8...Nxe5 9.fxe5 Nd7 10.Nf3 f6 11.exf6 Bxf6 12.d4 b6 13.Bd3 a5 14.a4 Ba6 15.Bxa6 Rxa6 16.0-0 Qc7 17.Qe2 Raa8 18.c4 Rac8 19.Rac1 Qb7 20.Rfe1 Rfe8 21.Qd3 e5 22.Qf5 Freienstein,F-Bilinski,V (2030) Silvaplana 1993 0-1 (47) 8.Nxc6= bxc6 Black is slightly better. 9.Nd2 9.Be2= 9...Qb6 10.Qf3 a5 10...Qa5 11.a4 Ba6 11...c4= remains equal. 12.g4 12.Be2± 12...Nd7 12...Ne8= deserves consideration. 13.h4 13.g5 13...Bf6 14.Bxf6 Nxf6 15.g5 Nd7 16.e4 f5 17.e5! Qb4 18.Kd1 18.h5 keeps the upper hand. 18...Rab8 18...Rfd8! 19.Rc1 19.Rh3!= 19...Qc3 19...Rfd8 20.h5 c4! 20.Qf2 Rb4 21.Rh2 Rfb8 22.Be2?
22.h5= 22...Qd4? Black should try 22...Rd4!-+ aiming for ... Rbb4. 23.g6 h6 23.c4? 23.c3± keeps the pressure on. Qxf2 24.Rxf2 23...Qxf2 23...Qb2 24.Rxf2 Accuracy: White = 31%, Black = 21%. ½–½
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PP1984Vierjoki,T1674½–½
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7 5.O-O O-O)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7 5.O-O O-O)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7 5.0-0 0-0 A03 Bird's Opening with 1...d5 5...Nc6= 6.c3 6.d3 keeps the upper hand. 6...c5 6...c6 6...b6 7.a4 Bb7 8.Ne5 c5 9.d4 Ne4 10.Be3 Nd7 11.Nxd7 Qxd7 12.Nd2 cxd4 13.Bxd4 Bxd4+ 14.cxd4 Rfc8 15.a5 Qb5 16.a6 Bc6 17.Rf3 Bd7 18.Rb3 Qc6 19.Nxe4 dxe4 20.Rc3 Qd5 21.Rac1 Grunberg,M (2463) -Ivanisevic,I (2540) Antalya 2002 1/2-1/2 (32) 7.d4 7.d3= remains equal. 7.h3 e6 8.Kh2 Nbd7 9.d3 b6 10.Be3 Bb7 11.Nbd2 Rc8 12.Bf2 Re8 13.d4 Ne4 14.Nxe4 dxe4 15.Ne5 f5 16.Nxd7 Qxd7 17.dxc5 Qxd1 18.Rfxd1 bxc5 19.Rd7 Ba6 20.Bf1 Bf8 21.Rxa7 Ra8 Sanuy Moncasi,A (1940) -Arno Bendicho,X (1727) Almenar 2018 1-0 (39) 7...Qb6N Better is 7...Qc7 7...Nbd7 8.Na3 Rb8 9.Nc2 b5 10.Ne5 Qc7 11.f5 cxd4 12.Nxd7 Qxd7 13.Nxd4 b4 14.Bf4 Rb6 15.fxg6 hxg6 16.cxb4 Rxb4 17.Nb3 Qb5 18.Be5 Ne4 19.Bxg7 Kxg7 20.e3 Qb6 21.Re1 Rd8 22.Rc1 Sindija, F (2158)-Biliskov,V (2335) Zadar 2001 0-1 (38) 7...b6 8.Ne5 Bb7 9.Nd2 Nbd7 10.Qb3 Qc7 11.e3 Rad8 12.Ndf3 Ne4 13.Nxd7 Rxd7 14.Ne5 Rdd8 15.Bxe4 dxe4 16.Bd2 e6 17.Rfd1 Kh8 18.Rac1 f6 19.Ng4 h5 20.Nf2 e5 21.dxc5 bxc5 22.c4 Schroeter,H (2072)-Anderton,D (2254) Dresden 2007 1/2-1/2 (33) 7...Nc6 8.dxc5 b6 9.Nd4 Nxd4 10.cxd4 bxc5 11.dxc5 1/2-1/2 (11) Belikov,V (2491)-Iljin,T (2412) Alushta 2010 8.e3 8.Nbd2 8...Nc6 8...Rd8 9.h3 9.Nbd2= keeps the balance. 9...Bf5 9...a5 10.Nbd2 10.g4= Be4 11.Nbd2 10...Ne4 10...Rad8 11.Nxe4 11.g4 Be6 12.Nxe4 dxe4 13.dxc5 Qxc5 14.Ng5 11...Bxe4 Reject 11...dxe4?! 12.Ng5± 12.Kh2 12.Nd2= 12...e6 12...a5 13.a4 White should play 13.g4 13...Na5 13...Ne7 14.dxc5 14.Ne5 14...Qb3?
14...Qxc5 15.Nd4 Bxg2 16.Kxg2 Qb6 15.Ra3 15.Nd2 Qxd1 16.Rxd1 15...Qxd1 16.Rxd1 Rac8 16...Nb3 17.b4? 17.Nd4! stays ahead. 17...Nc4 Black is really pushing. 18.Ra2 18.Nd4 18...Bxc3-+ 19.Nd2? 19.Ne5 Bxg2 20.Kxg2 19...Bxg2 20.Nxc4 Black should prevent Nd6. Bf3 Don't do 20...dxc4 21.Kxg2 Bxb4 22.Rd7-+ 20...Bxb4 21.Ne5 21.Rd3 Bxb4 Not 21...dxc4 22.Rxc3 a5 23.bxa5= 22.Nd6 Rxc5 23.Nxb7? 23.Ba3 Bxa3 24.Rdxa3 23...Rxc1
24.Rb2 Rh1# Accuracy: White = 7%, Black = 14%. 0–1
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Kojjootti1549Vierjoki,T15580–1
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.g3 Nc6 4.Bg2 Nf6 5.O-O)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.g3 Nc6 4.Bg2 Nf6 5.O-O)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 3.g3 Nc6 4.Bg2 Nf6 5.0-0 A03 Bird's Opening with 1...d5 g6 6.c3 6.d3= 6...Bg7 7.e3N 7.d3= keeps the balance. Qb6 8.Kh1 0-0 9.Qe1 Qa6 10.Be3 b6 11.Qd2 Be6 12.Na3 Qc8 13.Nc2 Bh3 14.Rae1 Bxg2+ 15.Kxg2 Qb7 16.Kg1 Ng4 17.Bf2 Nxf2 18.Rxf2 d4 19.c4 a6 20.b3 b5 21.Na3 b4 22.Nc2 Acimovic,G (1694)-Rakic,T (1918) Subotica 2014 0-1 (75) 7.Ne5 0-0 8.Nxc6 bxc6 9.d3 Qb6 10.Kh1 Bf5 11.Qe1 d4 12.Na3 Nd5 13.Nc4 Qc7 14.Bd2 e5 15.fxe5 Bxe5 16.cxd4 cxd4 17.Rc1 Rac8 18.Bg5 Bg7 19.Qa5 Qd7 20.Qc5 Bh3 21.Na5 Bxg2+ Forgacs,J (2300)-Rovid,K (2385) Hungary 1995 0-1 (34) 7.h3 0-0 8.d3 Ne8 9.Nbd2 e5 10.fxe5 Nxe5 11.Qe1 Nc6 12.Nh2 Be6 13.Ndf3 Qd7 14.Ng5 Nd6 15.Bf4 Rad8 16.g4 h6 17.Nxe6 fxe6 18.Qd2 Kh7 19.g5 h5 20.Rae1 e5 1/2-1/2 (20) Roellig,R (1744)-Bachmann,N (1802) Offenbach 2012 7...Bg4 7...0-0 8.d4 8.d3= 8...Qb6 8...Qd7 9.Qc2 9.Nbd2= 9...0-0 10.Nbd2 10.Ne5 10...Bf5 Black should play 10...Rfd8 11.Qd1 11.Qb3 11...Ne4 Better is 11...e6 12.Nxe4 Bxe4 12...dxe4?! 13.Nd2± 13.Ne5 13.Ng5= 13...Bxg2 14.Kxg2 Rad8 14...Nxe5 15.fxe5 f6 15.Rb1 15.Nf3 15...f6 15...Nxe5 16.fxe5 f6 17.exf6 Rxf6 16.Nd3!= cxd4 17.exd4 Rfe8 17...e6= 18.Nc5 18.h4± 18...e5 19.fxe5 fxe5 20.Bg5 Rd6! 21.Nb3 21.Qd2= remains equal. 21...exd4 22.cxd4 Nxd4 Much weaker is 22...Bxd4?! 23.Qf3= 23.Nxd4 Bxd4 23...Qxd4 24.Qxd4 Bxd4 24.Qf3!= Qf7+ would kill now. Qc7? 24...Bf6 25.Bf4? 25.Rbe1!+- Rb8 26.Bf4 25...Qc2+ 26.Kh1
26...Re2! 27.g4 Rd7 Don't go for 27...Rf2? 28.Rxf2 Qxb1+ 29.Rf1+- 28.Rbc1 28.Rbd1 is a better defense. Bb6 29.Rde1 Rxe1 30.Rxe1 28...Qxb2?? 28...Qe4-+ 29.Qxe4 Rxe4 29.Rc8+ Kg7
30.Bg3 30.Be5+! Kh6 30...Bxe5 31.Qf8# 31.Qf4+ g5 32.Qf6# 30...Bf6+-
31.g5! Rf7 31...Bxg5 32.Qf8# 32.gxf6+ Qxf6 33.Qxf6+ Rxf6 34.Rxf6? White has to play 34.Rc7++- Kh6 35.Rxf6 34...Kxf6 Endgame KRB-KR 35.Rc7 35.Rf8+± Ke7 36.Rf2 35...Rxa2 36.Rxb7 h5 36...Ke6!= 37.Rd7 Ra5 38.Rd6+ Kf5 39.Rd7 g5 40.Kg2 h4 41.Bf2 a6 42.Kf3 Ra3+ 43.Kg2 43.Be3!? 43...Ke4 44.Re7+ Kf5 45.Rf7+ Ke6 46.Rg7 Kf6 47.Bd4+ Kf5 48.Rf7+ Ke4 49.Bf2 49.Bh8 seems wilder. Ra2+ 50.Kh3 d4 51.Re7+ Kf4 52.Be5+ 49...Ra2 50.Re7+ Kd3 51.Re3+ Kc4 52.Re5 d4 53.Rxg5 d3 54.Rg4+ Kc3 55.Kf3?
55.Rg6= 55...d2!-+ 56.Rg1?
56.Rd4 Ra1 57.Rxd2 Kxd2 58.Bxh4 56...Kd3? 56...Kc2!-+ 57.Ke2 Ra4 57.Bxh4 Strongly threatening Bg5. Rc2? 57...Kc2= 58.Rg2 58.Ke2 Ra5 58...Ra3+ 59.Ke4 Ra4+ 60.Ke3 Rxh4 61.Rxd2+ Kb3 58.Rg8?? - 58.Bg5+- Rc3 59.Rd1 Kc2+ 60.Ke2 58...Rc3?? 58...d1Q+ - mates 59.Kf4 Rc4+ 60.Ke5 Qe2+ 61.Kf5 Qf3+ 62.Kg6 Rc6+ 63.Kg5 Qd5+ 64.Kf4 Rc4+ 65.Kg3 Qxg8+ 66.Kf3 Qg4+ 67.Kf2 Rf4+ 68.Ke1 Qg1# 59.Kf2?? 59.Rd8++- Kc4+ 60.Ke2 59...Kc2 60.Rd8? 60.Rg1 60...d1Q 61.Rxd1 Kxd1 KR-KB 62.Bg3 a5 Black mates. 63.h4 Rc8 64.Be5 a4 65.Kg3 Ke2 66.Kg4 Ke3 67.h5 Ke4 68.Bg7 Rg8 69.h6 a3 70.Kg5 a2 71.Kh5 Kf5 72.Ba1 Rg1 Accuracy: White = 24%, Black = 38%. 0–1
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Kojjootti1549Vierjoki,T15580–1
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O Nf6 7.Qe1 O-O 8.e4)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O Nf6 7.Qe1 O-O 8.e4)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.0-0 Nf6 7.Qe1 0-0 8.e4 A03 Bird's Opening with 1...d5 8.h3!= 8...dxe4 9.dxe4 Nb4 9...e5= 10.Nc3 10.fxe5 Ng4 11.Nc3 Ncxe5 12.Nd5 Be6 13.Nxe5 Bxe5 14.h3 Bxd5 15.hxg4 Bc4 16.Rf3 Be6 17.g5 Bg4 18.Rf1 Qe7 19.Rb1 Rad8 20.Bf4 Rd7 21.Qa5 b6 22.Qa3 Rfd8 23.Bf3 Bh3 24.Rfd1 Rxd1+ Alonso Moyano,J (2400) -Harikrishnan,A (2204) Barbera del Valles 2018 1/2-1/2 (49) 10...Nd4 11.Rf2 Nxf3+ 12.Bxf3 Re8 13.f5 gxf5 14.Bg5 Bd7 15.Rd1 Qc8 16.Bxf6 Bxf6 17.Bg4 fxg4 18.Rxf6 Re6 19.Qf2 Bc6 20.Rxf7 Qe8 21.Rf1 Rd8 22.Qf5 Rg6 23.Nd5 Bxd5 24.exd5 e4 Dzhumaev,M (2434)-Tiviakov,S (2584) Chennai 2018 1-0 10.Na3 White should play 10.Rf2 10...Rb8N 10...Ne8 10...b6 11.c3 Nd3 12.Qe2 Ba6 13.e5 Ne8 14.Ng5 Rb8 15.Be3 c4 16.Rad1 Qc7 17.Bd4 Bh6 18.e6 f6 19.Ne4 Nd6 20.Nxd6 Qxd6 21.f5 Rbc8 22.Be4 g5 23.Nxc4 Nxb2 24.Qxb2 Bxc4 25.Bxf6 Cernik,L (2229) -Vagner,T (2288) Czechia 2010 1-0 (42) 11.e5 11.Qe2 11...Nfd5 11...Ng4± 12.c4 12.Qf2+- 12...Nb6 12...Nd3= and Black has nothing to worry. 13.Qe2 Nxc1 14.Rfxc1 14.Raxc1 Nb4= 14...Nb4 13.b3 13.Qf2+- 13...Nd3 13...Bg4± 14.Qe3+- Threatens to win with Rd1. Nxc1 15.Raxc1 Don't take 15.Rfxc1?! Bg4 15...Nd7 16.Rfd1 e6 16...a6± 17.Nb1 b5 18.cxb5 axb5 17.Nb5 a6 18.Nd6 Qc7 19.Ng5 Nb6?
19...h6 20.a4 Bd7 21.Nge4 Bc6 22.Nxc5 Bxg2 23.Kxg2 Nc8 23...h6 24.Rc3 Qc6+ 25.Kg1 Nd7 24.Nce4 Nxd6 25.Nxd6 Weaker is 25.exd6 Qd7+- 25...Rfd8 26.c5 Bf8 26...Qc6+ was worth a try. 27.Qf3 Rd7 27.Qe4 27.Kh3+- 27...Rd7? 27...b6± keeps fighting. 28.b4 Rbd8 29.b5 axb5 30.axb5 Qb8 30...Rb8 31.b6 Qd8 31.c6 bxc6 32.bxc6 Rc7 33.Qc4? 33.Rb1 Qa8 34.Rb7 33...Qb2+ 34.Kh3 Qa3? 34...Qb6 35.Rc2 h5 35.Nb5 Rxd1 36.Nxa3 Rxc1 37.Qxc1
Hoping for Nb5. 37...Bxa3 38.Qxa3 Rxc6 39.Qa8+ Accuracy: White = 33%, Black = 23%. 1–0
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WhiteEloWBlackEloBRes
Kojjootti1549Vierjoki,T15581–0
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.d3 Nf6 4.g3 Nc6 5.Bg2 e6 6.O-O)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.d3 Nf6 4.g3 Nc6 5.Bg2 e6 6.O-O)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 3.d3 Nf6 4.g3 Nc6 5.Bg2 e6 6.0-0 A03 Bird's Opening with 1...d5 Qb6 6...Be7 7.Kh1 7.c4± 7.c3 Bd6 8.Qe1 c4+ 9.d4 Bd7 10.Nh4 0-0-0 11.Nd2 Rde8 12.Kh1 Ne7 13.e4 Nxe4 14.Bxe4 dxe4 15.Nxc4 Qc6 16.Ne5 Bxe5 17.fxe5 Nf5 18.Ng2 h5 19.Rf4 g5 20.Rxe4 h4 21.Bxg5 hxg3 Hillmann,R (2022)-Filipiak,T (2149) Leipzig 2005 0-1 7...Bd6
7...Be7= keeps the balance. 8.c4 d4 9.Na3 h5 10.Nc2 h4 11.Nxh4 Nh5 12.Kg1 Bxh4 13.gxh4 Bd7 14.Bd2 a5 15.Ne1 Qc7 16.a3 Ne7 17.e4 dxe3 18.Bxe3 Nf5 19.Bd2 Nxh4 20.Be4 Bc6 21.Ng2 Nf5 22.Bc3 0-0-0 Porozhniak,M (2021)-Filippova,D (1955) Sochi 2018 0-1 (38) 8.Qe1N 8.e4!± 8.c3 Qc7 9.Qe1 b6 10.e4 Nd7 11.Qe2 e5 12.f5 f6 13.h3 dxe4 14.dxe4 Ndb8 15.Qf2 Qf7 16.Nbd2 Bb7 17.h4 Ne7 18.Kg1 c4 19.Qe2 b5 20.a4 Ba6 21.axb5 Bxb5 22.Rd1 Nd7 Steadman,M (1473)-Fu,A Devonport 2016 1/2-1/2 (45) 8...0-0 8...Qc7= 9.e4 Black must now prevent e5. dxe4 9...Be7= remains equal. 10.dxe4± Be7 11.Nc3 11.b3 11...a6 Better is 11...Bd7= 12.e5 12.h3 12...Nd5=
13.Nxd5 13.Ne4!± 13...exd5 14.c3 White should play 14.c4= d4 15.Qd1 14...Be6 14...Bf5 15.h3 15.Nd2 stays ahead. 15...Rfd8 15...Rad8 16.g4= d4 17.f5 White should try 17.Nd2= 17...Bd5 17...Bc4 18.Ng5 18.e6= 18...Bxg2+ 19.Kxg2 dxc3 19...Bxg5 20.Bxg5 Re8 20.bxc3 And now f6 would win. Rd3? 20...Bxg5= 21.Bxg5 Rd3 21.f6+- aiming for Qe4. gxf6? 21...Nxe5 22.fxe7 Qc6+ 23.Qe4 f6 22.exf6 Qe4 is the strong threat. Bd6 23.Qh4 Rg3+ 24.Kh1 Kf8 25.Qxh7 Ke8 26.Qxf7+ Kd8
27.Qg8+ 27.Rb1‼ Rxh3+ 27...Qxb1 28.Ne6+ 28.Kg2 Rg3+ 29.Kf2 27...Kc7 28.Qxa8? 28.f7+- Ne7 29.Qe8 29.Qxa8? loses. Qc6+ 30.Rf3 Rxf3-+ 29.Ne6+? Kd7-+ 29...Qc6+ 30.Qxc6+ Kxc6 31.f8Q Rxf8 32.Rxf8 28...Ne5? 28...Nd8= 29.Ne4 Qc6 29.Qe8 Rxc3 30.Ne6# Accuracy: White = 25%, Black = 21%. 1–0
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Kojjootti1553Vierjoki,T15341–0
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.0-0 A03 Bird's Opening with 1...d5 Qb6 6...Nf6 stays ahead. 6...b6 7.c3 Bb7 8.Qc2 Nf6 9.e4 c4 10.e5 cxd3 11.Qxd3 Ne4 12.Nbd2 Nc5 13.Qe3 e6 14.Nb3 Qe7 15.Nbd4 0-0 16.Nxc6 Bxc6 1/2-1/2 (16) Sydor,A (2395)-Estrin,Y (2450) Lublin 1974 7.e3N
7.Nc3± Nf6 8.e4 dxe4 9.dxe4 Be6 10.e5 Ng4 11.Nd5 Bxd5 12.Qxd5 c4+ 13.Kh1 Nf2+ 14.Kg1 Ng4+ 15.Kh1 0-0 16.h3 Nb4 17.Qxc4 Rac8 18.Qb3 Nxc2 19.Qxb6 axb6 20.Rb1 Nge3 21.Bxe3 Nxe3 22.Rfc1 Kuhn,U (2015) -Becker,R (2156) Griesheim 2003 0-1 (31) 7.c3 Nf6 7...Nh6 8.e3 0-0 9.Qe2 Bg4 10.Nbd2 Rae8 11.h3 Bd7 12.e4 dxe4 13.dxe4 e5 14.Nc4 Qc7 15.fxe5 Nxe5 16.Nfxe5 Rxe5 17.Bf4 Bb5 18.b3 Qe7 19.Qd2 Rd8 20.Qc1 Bxc4 21.bxc4 g5 22.Bxe5 Bautz,V-Katzich,A Germany 1995 1-0 (46) 8.Qe1 Bf5 9.h3 c4+ 10.d4 Bxb1 11.Rxb1 Ne4 12.Kh2 f5 13.Nd2 0-0 14.Nxe4 fxe4 15.e3 e6 16.b3 Rf7 17.Ba3 Qa6 18.Qc1 Rc8 19.Re1 Bf8 20.Bxf8 Rcxf8 21.bxc4 Qxc4 Puls,T-Wallhof,D Germany 1991 1-0 (39) 7...Bxb2 8.Bxb2 Qxb2 Black is slightly better. 9.Nbd2 Qb6 9...Nf6 10.c4 10.Rb1 Qc7 11.c4 10...e6 10...Nf6= remains equal. 11.cxd5 11.e4± 11...exd5 12.Ng5 12.Qc1± 12...Nf6 12...h6 13.Rb1 Qd8 13.Kh1? 13.Qc1= 13...0-0-+ 14.e4 dxe4 Better is 14...Qd8 15.Rc1 Ng4 15.Ngxe4 Nxe4 16.dxe4 16.Nxe4= Bf5 17.Rb1 Bxe4 18.Rxb6 Bxg2+ 19.Kxg2 axb6 20.Qb3 16...Be6 16...Qc7 17.Nc4 Rd8 17.f5= aiming for Rb1. Bc8
17...Bd7= 18.Qg4 18.Nc4!± Qd8 19.Qc1 18...h6 18...f6! 19.Qh4 White has compensation. Kh7? 19...Ne5 20.Nf3? 20.fxg6++- Kg7 21.Qf6+ Kg8 22.g7 20...Bd7? 20...Qd8= 21.Ng5+ White mates. Kg7 22.f6+ Kg8 23.Qxh6 Accuracy: White = 24%, Black = 11%. 1–0
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Kojjootti1595Vierjoki,T15591–0
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A03 Bird's Opening with 1...d5 (1.f4 Nf6 2.Nf3 d5 3.b3 g6 4.Bb2 Bg7 5.e3 O-O 6.Be2 c5 7.O-O Nc6)

A03 Bird's Opening with 1...d5 (1.f4 Nf6 2.Nf3 d5 3.b3 g6 4.Bb2 Bg7 5.e3 O-O 6.Be2 c5 7.O-O Nc6)
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1.f4 Nf6 A03 Bird Opening 2.Nf3 d5 3.b3 g6 4.Bb2 Bg7 5.e3 0-0 6.Be2 c5 7.0-0 Nc6 A03 Bird's Opening with 1...d5 7...e6 8.c4 8.Ne5= 8...d4! Threatens to win with ... d3. 9.exd4 9.Qe1 9...cxd4-+ 10.d3 10.Ne5 was called for. 10...Ng4 11.Qd2N 11.Na3 Ne3 12.Qe1 11.Bc1 Ne3 12.Qd2 Nxf1 13.Kxf1 e5 14.fxe5 Nxe5 15.Nxe5 Bxe5 16.g3 Bh3+ 17.Kg1 f5 18.Ba3 Rf7 19.Bf3 Kg7 20.Bd5 Rf6 21.Qe1 Bc7 22.Nd2 f4 23.Ne4 Ra6 24.Bb4 fxg3 25.hxg3 Bf5 Santos,L (1910) -Franca,J (1881) Itaborai 2012 0-1 (48) 11...Ne3 12.Rf2 12.Na3 12...Nb4?? 12...Ng4-+ 13.Rf1 Bh6 13.Na3? 13.Qxb4+- aiming for Na3. Nc2 14.Qd2 Nxa1 15.Bxa1 13...a5 13...Qb6 14.Rc1? 14.h3 stays ahead. 14...Nxa2 15.Ra1 Nb4 16.Ne5?
16.h3 is a better defense. 16...Nf5 16...g5!-+ and Black stays clearly on top. ...gxf4 is the strong threat. 17.c5 17.fxg5 Bxe5 17...gxf4 17.Nb5 17.c5 17...Nd6? 17...f6-+ 18.Nf3 e5 18.Nxd4= Nf5 18...f6 19.Nef3 e5 19.Nxf5!± Bxf5 20.d4 f6 20...e6 21.Nf3 21.Ng4± 21...e5!= 22.fxe5 fxe5 23.dxe5 23.d5!± 23...Qxd2 24.Nxd2 Rad8 25.Bf3 25.Nf3= 25...Nd3! 26.Bd5+
26...Kh8? 26...Rxd5! 27.cxd5 Nxb2 27.Nf3!= Nxf2 28.Kxf2 Bg4? Better is 28...b6!= 29.Rxa5± Ra8 29...Bxf3± might work better. 30.gxf3 Rf5 30.Rxa8 Rxa8 31.Bd4 Ra2+ 32.Kg3 h5 33.h3 Bxf3 33...Bc8 was necessary. 34.Be4 Ra3 34.gxf3?+- Endgame KRB-KB Worse is 34.Bxf3 Rd2= Only move: 34.Kxf3+- b6 35.b4 34...Rd2! 35.Ba1 35.Bc3 h4+ 36.Kxh4 35...Rd3? 35...Kh7= 36.b4? 36.e6 Black must now prevent e7. Re3 37.Be4 36...b6? 36...Bf8 37.e6+ 37.Bxb7 Bxb4 38.e6+ Kg8 37...Kh7 37.b5 37.e6 37...Bf8
37...h4+ 38.Kf2 38.Kxh4 Rd1± 38...Ra3 38.e6+!+- Bg7 38...Kh7 39.Bf6 Bd6+ 40.Kg2 Re3 39.Bxg7+? 39.e7+- Bxa1 40.e8Q+ Kg7 41.Be4 39...Kxg7 KR-KB 40.h4 40.e7= Re3 41.Be4 40...Kf6 Black has compensation. 41.Kf4 Rd4+ 42.Kg3 Ke7 43.Kg2? 43.Kh3 43...Kd6? Black should try 43...Rxh4-+ Strongly threatening ...Rd4. 44.Kf2 g5 44.Kg3 Rd3 44...Ke7 45.Kf4!= Rd1? 45...Rd4+= 46.Kg5 Ke7 46.Kg5+- Rg1+ 47.Kf6 Accuracy: White = 23%, Black = 21%. 1–0
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Vierjoki,T1593pkktet14601–0
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.e3 Nc6 4.Bb5)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.e3 Nc6 4.Bb5)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 3.e3 Nc6 4.Bb5 A03 Bird's Opening with 1...d5 e6 5.Ne5 5.b3 Bd6 6.Bb2 f6 7.0-0 Nge7 8.Na3 0-0 9.Qe1 Bd7 10.d4 Qe8 11.Bd3 a6 12.c4 Qh5 13.Qh4 Qxh4 14.Nxh4 cxd4 15.cxd5 exd5 16.exd4 Nxd4 17.Rad1 Ndc6 18.Nc2 Bc5+ 19.Kh1 Nb4 Wagner,G (1780)-Taylor,R (1992) Fishguard 2016 1-0 (45) 5...Qb6N 5...Nge7 5...Bd7 6.Bxc6 6.Nxd7 Qxd7 7.Qf3 f5 8.b3 Be7 9.Bb2 Nf6 10.d3 0-0 11.Nd2 a6 12.Bxc6 Qxc6 13.c4 Rac8 14.Rb1 b5 15.0-0 Rfd8 16.Rfd1 dxc4 17.dxc4 Rd3 18.Nf1 Qxf3 19.gxf3 bxc4 20.bxc4 Rcd8 Poppner,D-Delander,A (2345) Berlin 1994 1/2-1/2 (48) 6...Bxc6 7.Nxc6 bxc6 8.0-0 Nf6 9.b3 Be7 10.Bb2 0-0 11.d3 a5 12.a4 Qb6 13.Qe2 Rad8 14.Nd2 Nd7 15.Rad1 f5 16.Kh1 Bf6 17.Ba3 Rf7 18.e4 fxe4 19.dxe4 e5 20.f5 Colta,M (1984)-Malkowski,K Poznan 2004 1-0 (40) 6.Bxc6+ bxc6 7.Qh5 7.b3 7...Qc7 7...g6 deserves consideration. 8.Qe2 f6 8.0-0 8.b3 8...Nf6 9.Qe2 9.Qf3 seems wilder. Bd6 10.b3 0-0 11.Nc3 c4 12.bxc4 Rb8 13.d3 9...a5 10.b3 Ba6 10...a4= 11.d3 11.c4 11...Bd6 12.Bb2 0-0 13.a4 Nd7 14.Nxd7 Qxd7 15.Nd2 Rab8 16.Rab1 16.Kh1± 16...f6 17.Qg4 Qe7 18.Rf3 18.Kh1=
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josemacbez1446Vierjoki,T16150–1
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.g3 Nc6 4.Bg2)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.g3 Nc6 4.Bg2)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 3.g3 Nc6 4.Bg2 A03 Bird's Opening with 1...d5 g6 5.d3 5.e3 Bg7 6.d4 cxd4 7.exd4 Bg4 8.c3 Nf6 9.0-0 Qd7 10.Nbd2 Ne4 11.Qe1 Nxd2 12.Bxd2 0-0 13.Ne5 Nxe5 14.fxe5 Bh3 15.Bxh3 Qxh3 16.Qe2 Qe6 1/2-1/2 (16) Karlsson,L (2506)-Cicak,S (2532) Gothenburg 2006 5.0-0 Bg7 6.e3 Nf6 7.Qe2 0-0 8.d3 Qb6 9.Kh1 Re8 10.Ne5 e6 11.Nxc6 Qxc6 12.c4 b5 13.cxb5 Qxb5 14.Nc3 Qa6 15.g4 Bb7 16.g5 Nd7 17.Bd2 Nb6 18.Nd1 Na4 19.Rb1 Bc6 Lomakina,G (2023)-Utiatskaja,I (2123) Satka 2016 0-1 (70) 5...Bg7 6.c3 LiveBook: 7 Games e5N 6...b6= 6...e6 7.Qc2 Nge7 8.0-0 0-0 9.e4 b5 10.a3 Bb7 11.Nbd2 Qb6 12.Rb1 Rac8 13.Kh1 b4 14.c4 dxe4 15.dxe4 a5 16.a4 e5 17.Nb3 Nd4 18.Nbxd4 exd4 19.b3 f5 20.Ne1 fxe4 21.Bxe4 Ciechocinska Miecko,Z-Sosnowska,E (2030) Gdynia 1982 0-1 (48) 7.fxe5 7.Nxe5± Nge7 8.Nd2 7...Nxe5 7...Nge7 8.0-0 8.Nxe5± Bxe5 9.Qb3 8...Ne7 Black should try 8...Nxf3+ 9.Bxf3 Ne7 9.Nxe5 Bxe5 10.Bh6 Better is 10.Be3 10...Nf5= 11.Bf4 Bxf4 11...Qd6= keeps the balance. 12.Rxf4?
White has to play 12.Qa4+± Bd7 13.Qxf4 12...0-0 12...Ne3 13.Qd2 Nxg2 14.Kxg2 0-0 13.e4 13.Qc1= 13...dxe4 13...Ne3!? 14.Qe2 Nxg2 15.Kxg2 dxe4 16.dxe4 Be6 14.Bxe4 Rb8 15.Qe2 15.Nd2= 15...b6 16.Nd2 Ba6 16...Nd6 17.Bxf5 gxf5 18.Rxf5 And now Qf3 would win. Bxd3 19.Rg5+?      
19.Qg4+= and White has nothing to worry. Kh8 20.Re5 19...Kh8? Black should play 19...Qxg5-+ 20.Qxd3 Rfd8 20.Qf2?       20.Qh5= 20...Qxg5 Accuracy: White = 17%, Black = 4%. 0–1
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guebourah1501Vierjoki,T15630–1
Kojjootti1549Vierjoki,T15580–1
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29 Jan 2020

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.g3 c5 4.Bg2 Nc6)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.g3 c5 4.Bg2 Nc6)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 Nf6 3.g3 c5 4.Bg2 Nc6 A03 Bird's Opening with 1...d5 5.c3 e6 5...g6 5...b6 6.0-0 Bb7 7.d4 e6 8.e3 Be7 9.Nbd2 0-0 10.Ne5 Rc8 11.h3 cxd4 12.exd4 a5 13.Qe1 b5 14.f5 Qc7 15.g4 Nd7 16.fxe6 Ndxe5 17.dxe5 Nxe5 18.exf7+ Nxf7 19.Nf3 Nd6 20.Nd4 Haraldsson,L (1942)-Svane,F (1608) Helsingor 2018 1-0 6.0-0 6.d3= 6...Bd6 6...Be7 6...Qc7 7.d4 Be7 8.e3 0-0 9.Nbd2 Rb8 10.a4 Ng4 11.Nb3 c4 12.h3 Nxe3 13.Bxe3 cxb3 14.Qxb3 Na5 15.Qc2 Nc4 16.Bf2 b5 17.axb5 Rxb5 18.b3 Na5 19.Nd2 Qb8 20.Rfb1 Bb7 21.Bf1 Palermo,V (2220)-Quatrini,A (2140) Mar del Plata 1999 1-0 7.d4N 7.d3 0-0 8.Nh4 d4 9.Na3 Nd5 10.Qe1 Be7 11.Nf3 Bf6 12.Bd2 a6 13.Rc1 Bd7 14.Nc2 Rc8 15.e4 dxe3 16.Nxe3 Nce7 17.Ng4 Ng6 18.Nxf6+ Nxf6 19.Ne5 Qc7 20.Qe2 Nd5 21.c4 Nde7 22.Bc3 Praxmarer,C (1992)-Heinrich,T (2144) Austria 2015 0-1 (48) 7...0-0 8.Qc2 8.Be3= 8...Qb6 8...b6 9.e3 Ba6 9.e3 Ne4 9...Bd7 10.Ne5 10.b3= 10...f5 11.Nf3 11.Nd2= keeps the balance. 11...Bd7 12.Nbd2 Rac8 12...Be8 13.Qd1 13.Ne5 Qc7 14.Nxe4 dxe4 15.Qe2 13...Nf6 13...Be8 14.h3 White should play 14.b3 14...Be8 14...cxd4-+ is more deadly. 15.exd4 e5 16.fxe5 Nxe5 17.Nxe5 Bxe5 15.Ne5 15.Kh2 15...Ne4 15...cxd4-+ 16.cxd4 Nb4 16.Nxe4 fxe4 17.Qg4 White should try 17.Nxc6 bxc6 18.dxc5 Bxc5 19.Qe2 17...Nd8 17...Rf6 18.Qd1 Be7 18.b3 18.h4 18...cxd4-+ 19.cxd4 Qa5 19...Bb5!-+ has better winning chances. 20.Rd1 Rf5 20.Qd1 Bb4 21.a3 21.a4 21...Bb5 21...Nf7 22.Kh2 Bb5 22.Rf2! Be1 23.Rc2 23.Rfa2 Bc3 24.Bb2 23...Rxc2-+ 24.Qxc2 Bxg3? Better is 24...Nf7-+ 25.Bb2 Nxe5 26.dxe5 Bxg3 25.Bd2= Qa6 25...Qb6 26.Bb4 Rxf4 26.a4 Be2 27.Qc8? 27.Bb4= Re8 28.Rc1 27...Nf7 White is under strong pressure. 27...Bh5-+ And now ...Qe2 would win. 28.Bf1 Qd6 28.Qd7 Nxe5 29.dxe5 Hoping for Rc1. Qb6? 29...Qc6 30.Qxc6 bxc6 30.Rc1! Bxf4?
But not 30...Qxb3?! 31.Qxe6+ Kh8 32.Bxe4!± 30...Bh5!= and Black has nothing to worry. 31.Rc7 Bf7 32.Rxb7 Qc5 31.Rc8?? 31.a5!+- is the narrow road to win. Bxe3+ 32.Kh2 Bg1+ 33.Rxg1 31...Bxe3+-+ 32.Bxe3 Qxe3+ 33.Kh2? 33.Kh1 Qh6 34.Rxf8+ Kxf8 35.Qc8+ Kf7 36.Qd7+ Kg6 37.Qxe6+ Kg5 38.Qxd5 33...Qf4+ 34.Kh1 Qxe5 35.Re8 Bf3 36.Qe7 Bxg2+ 37.Kxg2 Endgame KQR-KQR Qb2+ 38.Kh1 Qf6 39.Rxf8+ Qxf8 40.Qxe6+ KQ-KQ Kh8 41.Qxd5 Qf3+ 42.Kg1 White threatens Qd8+ and mate. h6 43.Qxb7 43.Kh2 b6 44.Qe6 43...Qg3+ 44.Kf1 Qxh3+ 45.Ke1 Qe3+ 45...Qh1+ 46.Ke2 Qf3+ 47.Ke1 Kh7 46.Kd1 Qd3+ 47.Kc1 e3 48.Qc8+ Kh7 ( -> ...e2) 49.Qc2 Qg6 50.b4? 50.Qe2 h5 51.Qxe3 50...h5 51.Qxg6+ Kxg6 KP-KP. Black mates. 52.Kd1 Kf6 53.Ke2 g5 54.b5 Ke6 55.a5 Kd6 56.b6 axb6 57.a6 Kc7 58.Kxe3 g4 Accuracy: White = 19%, Black = 26%. 0–1
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WhiteEloWBlackEloBRes
Kojjootti-Vierjoki,T-0–1
Blutsvente1726Vierjoki,T19630–1
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.e3 c5 4.b3 Nc6 5.Bb2 e6 6.Be2 Be7 7.O-O O-O)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.e3 c5 4.b3 Nc6 5.Bb2 e6 6.Be2 Be7 7.O-O O-O)
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1.f4 d5 2.Nf3 Nf6 3.e3 c5 A03 Bird Opening: Lasker Variation 4.b3 Nc6 5.Bb2 e6 6.Be2 Be7 7.0-0 0-0 A03 Bird's Opening with 1...d5 7...b6= is superior. 8.d4 8.Ne5! 8...Qb6N 8...Ng4 9.Qd3 b6 8...Ne4 9.Nbd2 f5 10.Ne5 cxd4 11.exd4 Nxe5 12.Nxe4 fxe4 13.fxe5 Bd7 14.Qd2 Qc7 15.c4 Rae8 16.Qc3 a6 17.Qh3 Bc8 18.Rac1 Qa5 19.Bg4 Rxf1+ 20.Rxf1 Bg5 21.cxd5 Qd2 22.Qc3 Qxc3 23.Bxc3 Borisovaite,A (1400)-Barsciauskas,G (1672) Klaipeda 2017 0-1 (37) 8...cxd4 9.Nxd4 Qb6 10.Kh1 10.Nd2 Nxd4 11.exd4 Bd7 12.a4 Rac8 13.Kh1 Qc7 14.Bd3 Bd6 15.Qf3 Bc6 16.Rae1 Ne4 17.Re2 f5 18.Nb1 Rf6 19.Ba3 Bxa3 20.Nxa3 Qe7 21.Nb1 Rh6 22.Bxe4 dxe4 23.Qe3 Qh4 24.g3 Qh3 Hatchett,P (1945)-Stayt,J (1983) England 2013 1-0 (47) 10...Bd7 11.Nd2 Rac8 12.Bd3 g6 13.N2f3 Ne8 14.Qe2 Bf6 15.Nxc6 Bxc6 16.Ne5 Bg7 17.Ba3 Qa5 18.Bxf8 Kxf8 19.Qe1 Qa3 20.Qd2 Nd6 21.c3 Be8 22.Rac1 b5 23.Rc2 Duran,M-Martinez,C (2247) Cartagena 2011 0-1 (47) 9.Qc1 9.Ne5= 9...Ne4 9...Rd8 10.c4 10.Nc3= 10...Nb4 10...Rd8 11.Nc3 Nxc3 12.Qxc3
Threatens to win with dxc5. 12...Bf6 Better is 12...f6 13.Ne5± cxd4 14.exd4 Rd8 14...dxc4± 15.bxc4 15.Nxc4 Nd5 15.Qxc4 Rd8= 15...Nc6 15.c5+- Qa5 16.a3 Nc6 17.b4 Qc7 18.Qh3 18.b5+- is more deadly. 18...g6 18...a6 19.Bd3 19.b5 Ne7 20.a4 19...Bg7 Black should try 19...a6 20.b5 White is really pushing. Ne7 21.Qf3 21.Qe3 21...Bd7 21...f6 22.Bc3 White should play 22.a4 22...Be8 23.a4 Rdb8 23...f6 24.h4 24.Qf2 24...Kf8? 24...f6± 25.Rfe1? 25.h5+- has better winning chances. 25...Bd7? 25...f6± 26.h5+- Ng8? 26...a6 27.hxg6 hxg6 27.Bb4 Ke8 28.Rac1 Nf6 29.hxg6 hxg6 30.g4 a6 31.g5 Ng8 32.Qh3 Bxe5 33.fxe5 axb5 34.Qh8 Rxa4 35.Rb1 35.c6 Bxc6 36.Rf1 35...Ke7 36.Qg7 Bc6 37.Rf1 Rf8 38.Bxg6 Be8
39.c6+ 39.Bxf7! Bxf7 40.g6 Nh6 41.Qxh6 Ke8 42.gxf7+ Qxf7 43.Rxf7 Rxf7 44.Qxe6+ Kf8 45.Bd2 39...Rxb4 40.Rxb4 bxc6 41.Bh7 Qa5 42.Rbb1 Qc3 43.Kg2 And not 43.Bxg8 Qg3+ 44.Kh1 Qh3+ 45.Kg1 Qg3+ 46.Kh1 Qh3+ 47.Kg1 Qg3+= 43...Qxd4 intending ...Qg4+. 44.Kg3 Not 44.Bxg8 Qg4+ 45.Kh1 Qh3+ 46.Kg1 Qg3+ 47.Kh1 Qh3+ 48.Kg1 Qg3+ 49.Kh1 Qh3+= 44...Qe3+ 45.Rf3 Qd2 46.Bxg8 b4 47.Rbf1 Accuracy: White = 28%, Black = 11%. 47.Ra1 Kd8 48.Qxf8 Qxg5+ 49.Kh3 Qh5+ 50.Kg2 Qg4+ 51.Rg3 Qe4+ 52.Kh3 1–0
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WhiteEloWBlackEloBRes
SP1906Vierjoki,T18441–0
RowenBub1677Vierjoki,T16660–1
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.e3 c5 4.Bb5+ Bd7 5.Bxd7+ Nbxd7 6.b3 e6 7.Bb2 Be7 8.O-O O-O)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 Nf6 3.e3 c5 4.Bb5+ Bd7 5.Bxd7+ Nbxd7 6.b3 e6 7.Bb2 Be7 8.O-O O-O)
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1.f4 d5 2.Nf3 Nf6 3.e3 c5 A03 Bird Opening: Lasker Variation 4.Bb5+ Bd7 5.Bxd7+ Nbxd7 6.b3 e6 7.Bb2 Be7 8.0-0 0-0 A03 Bird's Opening with 1...d5 9.Qe1 Ne4       9...Ne8 10.Qg3 Bf6 11.Bxf6 Qxf6 12.d4 cxd4 13.exd4 Rc8 14.c3 Qg6 15.Qf2 Nd6 16.Qb2 Ne4 17.Nbd2 Ndf6 18.c4 Rfd8 19.c5 Ng4 20.Nxe4 Qxe4 21.Qd2 Qe3+ 22.Kh1 Qxd2 23.Nxd2 Ne3 24.Rfc1 Narmontas,M (2151)-Lichman,P (2126) Oropesa del Mar 2001 0-1 (61) 9...Qc7 10.Qg3 Rfe8 11.d3 Bf8 12.Ne5 Nxe5 13.Bxe5 Qd8 14.Nd2 g6 15.Nf3 Bg7 16.Bb2 Nh5 1/2-1/2 (16) Larrea,O (1768)-Mordetzki,A Montevideo 2017 10.d3 Nd6 11.Nbd2 The position is equal. Bf6 12.Bxf6N 12.Ne5 Bxe5 1/2-1/2 (12) Mangold,T (1410)-Schulze,C (1684) Mecklenburg VP 2005 12...Nxf6 13.Ne5 b5 14.Qh4 Nf5 15.Qh3 Qb6?
15...Nd7= and Black stays safe. 16.g4+-       Ne7 17.g5 Ne8 18.Nd7       White is on the roll. Qd6? 18...Qa5 was necessary. 19.Nxf8 Kxf8 20.Qxh7 Nf5 21.Rae1 Ke7 22.e4 dxe4 23.Nxe4 Qd4+ 24.Nf2 24.Rf2+- and White stays clearly on top. 24...Ne3± 25.Rxe3 Qxe3 26.Qe4 Qxe4 27.Nxe4       Endgame KRN-KRN Rc8 28.c4       Nd6? 28...bxc4± 29.dxc4 29.bxc4 Nd6± 29...Nd6 30.Nxd6 Kxd6
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WhiteEloWBlackEloBRes
C-stone1710Vierjoki,T18641–0
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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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WhiteEloWBlackEloBRes
TK1475Vierjoki,T18520–1
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 A03 Bird's Opening with 1...d5 3.e4 3.d3 g6 4.e4 Bg7 5.Nc3 d4 6.Ne2 Nc6 7.g3 Nf6 8.Bg2 0-0 9.0-0 b6 10.h3 h6 11.g4 e5 12.f5 g5 13.Ng3 Nh7 14.Nh5 Bd7 15.h4 f6 16.hxg5 fxg5 17.Qe1 Qe7 Orev,P (2290)-Michenka,J (2265) Ostrava 1981 1-0 (50) 3...d4 4.Bb5+N 4.Bc4 e6 5.0-0 Nc6 6.d3 Be7 7.c3 Nf6 8.cxd4 Nxd4 9.Nc3 0-0 10.Ne5 Nd7 11.Be3 Nxe5 12.fxe5 Bg5 13.Bf2 Bf4 14.Ne2 Bxe5 15.Rb1 Qd6 16.Ng3 b5 17.Bb3 Ba6 18.Bxd4 Bxd4+ Demanov,A (1996)-Parfenov,V (2137) Uljanovsk 2009 0-1 (35) 4...Bd7 5.a4 Qb6 5...e6= keeps the balance. 6.0-0 6.d3 6...Bxb5 6...e6± 7.axb5+- Qxb5 8.Na3 White is clearly better. Qc6 8...Qa6 9.d3 Nc6 9.Ne5 Qxe4?
9...Qc7 10.c3 Nc6 10.Nb5 White is clearly winning. Nf6 11.Nc7+ Kd8 12.Nxa8 Qd5 13.Rxa7 g6 14.Nb6 Qe6 15.c4 Bg7 16.Nd5 Nxd5 17.cxd5 Qxd5 18.Qa4 f6 19.Nc4 Nd7 20.Qa5+ Ke8 21.Nb6 Nxb6 22.Qxb6 Kf7 23.Rxb7 Rc8 24.d3 Qf5 25.Qd6 Re8 26.Re1 Bf8 27.Bd2 Qxd3 28.Qe6+ Kg7 Accuracy: White = 75%, Black = 30%. 0–1
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WhiteEloWBlackEloBRes
trallala1419Vierjoki,T16140–1
pineapple421232Vierjoki,T18950–1
Kojjootti1549Vierjoki,T15580–1
Kojjootti1549Vierjoki,T15581–0
Kojjootti1672Vierjoki,T18510–1
Kojjootti1643Vierjoki,T16570–1
Mahmoud_elmorsy1840Vierjoki,T20480–1
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A03 Bird's Opening with 1...d5 (1.b3 d5 2.Bb2 c5 3.f4 Nc6 4.Nf3 Nf6 5.e3 Bg4 6.Be2 e6 7.O-O)

A03 Bird's Opening with 1...d5 (1.b3 d5 2.Bb2 c5 3.f4 Nc6 4.Nf3 Nf6 5.e3 Bg4 6.Be2 e6 7.O-O)
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1.b3 d5 A01 Nimzo-Larsen Attack: Classical Variation 2.Bb2 c5 3.f4 Nc6 4.Nf3 Nf6 5.e3 Bg4 6.Be2 e6 7.0-0 A03 Bird's Opening with 1...d5 Bd6 7...Be7= 8.h3 8.Ne5 Bxe5 9.fxe5 Bxe2 10.Qxe2 Nd7 11.d4 0-0 12.Nd2 Qb6 13.Nf3 a5 14.a4 Qa6 15.Qxa6 Rxa6 16.dxc5 Nxc5 17.Ba3 b6 18.Bxc5 bxc5 19.Rad1 Rb6 20.h4 Rb4 21.Rd3 Ne7 22.h5 h6 23.Rc3 Rc8 24.Nd2 Nf5 25.Rf4 Bargeri,L (2092)-Lapiccirella,D (2246) Biella 2015 0-1 (48) 8...Bh5N 8...Bf5= 8...Bxf3 9.Bxf3 Qc7 10.c4 dxc4 11.bxc4 e5 12.Nc3 a6 13.Nd5 Nxd5 14.cxd5 Ne7 15.fxe5 Bxe5 16.Bxe5 Qxe5 17.d6 Nc6 18.d7+ Kxd7 19.Bxc6+ Kxc6 20.Rxf7 Rhd8 21.Rb1 b5 22.a4 Rd5 23.Qb3 Godois,J (2240)-Rial,D Guaramirim 1999 1-0 (36) 9.Nc3 9.Ne5 Bxe5 10.fxe5 Bxe2 11.Qxe2 9...a6 9...0-0 10.d3? 10.Ne5! stays ahead. Bxe2 11.Nxe2 10...0-0? 10...Bg6 11.Qd2? 11.Ne5! keeps the upper hand. Bxe5 12.fxe5 Bxe2 13.Nxe2 11...Qc7 11...Bg6 12.Nh4 d4 12.Rae1 12.g3 12...d4 13.Ne4 Nxe4 13...Nd5!-+ 14.Nxd6 dxe3 14.dxe4= Threatens to win with g4. dxe3 15.Qc3 f6 Threatening ...Bxf3. 16.g4 16.e5= fxe5 17.fxe5 16...Bf7 16...Be8 17.e5 fxe5 18.fxe5 Be7 19.Qxe3 Nb4 17.e5 fxe5 18.fxe5 Be7 19.Qxe3
19.a3 was necessary. 19...Bg6? 19...Nb4!-+ 20.Rd1 Nxc2 20.Bd3 20.c3= remains equal. 20...Bxd3 21.Qxd3
21...Rad8 21...Nb4! 22.Qe2 Nxa2 22.Qe4 22.Qc4= feels stronger. 22...Rd5 Black should play 22...Rf7 23.h4 23.Re2= 23...Qd8 Better is 23...Rf7 24.g5 24.h5!= keeps the balance. 24...Rf5 25.Nd2? 25.Re2 25...Qf8? 25...Rxd2-+ 26.Bc3 Rxf1+ 27.Rxf1 Qd5 28.Qxd5 Rxd5 26.Rxf5 Qxf5 27.Qxf5 exf5 Accuracy: White = 10%, Black = 17%. 0–1
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WhiteEloWBlackEloBRes
trallala1437Vierjoki,T15880–1
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.b3)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.b3)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 3.b3 A03 Bird's Opening with 1...d5 Nc6 4.Bb2 Bg4 5.g3N 5.e3 e6 5...a6 6.Be2 e6 7.0-0 Bxf3 8.Bxf3 Nf6 9.Nc3 Be7 10.Ne2 Rc8 11.Kh1 0-0 12.g4 d4 13.exd4 cxd4 14.g5 Nd5 15.Be4 Bc5 16.Ng3 g6 17.Qg4 Nce7 18.Rf3 Nf5 19.Rg1 Re8 20.h4 Abou el Zein,E (2333)-Tissir,M (2368) Cairo 2002 0-1 (53) 5...d4 6.Bb5 dxe3 7.Bxc6+ bxc6 8.0-0 Bxf3 9.Qxf3 Qd5 10.dxe3 Qxf3 11.Rxf3 Rd8 12.Nc3 Rd2 13.Rc1 g6 14.Ne4 Rd5 15.Bxh8 f6 16.c4 Rh5 17.Rb1 Kf7 18.h3 e6 19.g4 Rh4 20.Kg2 Schlesier,T (1071)-Zesewitz,M (1314) Berlin 2006 1-0 (33) 6.Bb5 6.h3 Bxf3 6...Bh5 7.g4 Bg6 8.Bg2 f6 9.d3 Qb6 10.Qe2 c4 11.dxc4 dxc4 12.Nd4 cxb3 13.axb3 Nxd4 14.Bxd4 Bc5 15.f5 Bf7 16.Qc4 Bxd4 17.Qxd4 Qxd4 18.exd4 Rd8 19.fxe6 Bxe6 20.Bxb7 Rxd4 21.Rh2 Lange,N (2033)-Falk,T (1968) Verdun 2007 1-0 (32) 7.Qxf3 Nf6 8.Bb5 Rc8 9.0-0 a6 10.Bxc6+ Rxc6 11.Nc3 h5 12.d3 Be7 13.e4 d4 14.Ne2 h4 15.f5 e5 16.c3 Nd7 17.cxd4 cxd4 18.Rfc1 Bg5 19.Rxc6 bxc6 20.Bc1 Qf6 Skrzyczek,T (1938)-Piesik,P (2337) Katowice 2017 0-1 (33) 6...Nge7 7.0-0 a6 8.Be2 Nf5 9.Ne5 Bxe2 10.Qxe2 Nb4 11.d3 d4 12.Na3 Nxe3 13.Rf3 Nbd5 14.f5 Qf6 15.Nec4 e5 16.Re1 b5 17.Nxe3 Nxe3 18.Bc1 c4 19.Bxe3 dxe3 Benke,M (1943)-Dijoux,J (1764) St Denis 2008 1/2-1/2 5...d4? Black should play 5...Bxf3 6.exf3 Nf6 6.Bg2 Nf6 6...Nh6 keeps the upper hand. 7.d3? 7.c3± 7...Nd5
White must now prevent ...Ne3. 8.Bc1 Black is better. g6 9.0-0 9.Na3 9...Bg7 10.Bd2 10.a4 keeps fighting. 10...Ne3 10...0-0-+ 11.Na3 Bxf3 12.Bxf3 e6 11.Bxe3! dxe3 12.c3 Qa5 12...0-0 13.Qc1= 0-0 14.Qxe3
14.h3!= Be6 15.Ng5 14...Bxc3? 14...Nd4! Hoping for ...Nc2. 15.Ne5 15.cxd4? Bxf3 16.Qxf3 Bxd4+ 17.e3 Bxa1-+ 15...Bxe5 16.Qxe5 Nc2 15.Nxc3± Qxc3 16.Rac1 Qd4? 16...Qb2± 17.Nxd4+- cxd4 18.Qe4 Rad8 19.f5 gxf5 20.Rxf5 Bxf5 21.Qxf5 White wants to mate with Be4. Rd6 22.Bxc6 bxc6 23.Qg5+ Rg6 24.Qxe7 Re6 25.Qd7 Rxe2 26.Rxc6 26.Qg4+ Kh8 27.Qxe2 Ra8 28.Qe5+ Kg8 29.Re1 Rf8 30.Qf6 c5 31.Re4 Rc8 32.Rg4+ Kf8 33.Qd6+ Ke8 34.Rg8# 26...Rxa2 27.Qg4+ Kh8 28.Qxd4+ Kg8 29.Rc5 29.Qe5 Ra8 30.Qg5+ Kh8 31.Qf6+ Kg8 32.Rc5 Re2 33.Rg5+ Kf8 34.Rf5 29...Re8 30.Rg5+ White mates. Kf8 31.Qd6+ Re7 32.Re5 Ra1+ 33.Kg2 Ra2+ 34.Kh3 a5 35.Rxe7 Kg7 36.Qe5+ Kg6 37.Qe4+ f5 38.Qe6+ Kg5 39.Rg7+ Kh5 40.Qxf5+ Kh6 41.Qf6+ Kh5 42.Rg5# Accuracy: White = 42%, Black = 11%. 1–0
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trallala1532Vierjoki,T13931–0
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.e3 Nc6 4.b3 Nf6 5.Bb2 e6)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.e3 Nc6 4.b3 Nf6 5.Bb2 e6)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 3.e3 Nc6 4.b3 Nf6 5.Bb2 e6 A03 Bird's Opening with 1...d5 5...g6= 6.d3?
6.Ne5 keeps the upper hand. 6...Be7 6...d4 7.exd4 cxd4 6...Qc7 7.g3 Bd6 8.Nc3 e5 9.Qd2 a6 10.0-0-0 Be6 11.Kb1 0-0-0 12.Nh4 d4 13.fxe5 Bxe5 14.Ne2 Ng4 15.exd4 cxd4 16.Re1 Ne3 17.Nf3 Bf6 18.Nf4 Bg4 19.Qf2 Nxc2 20.Rc1 Bxf3 21.Qxf3 Pace,P (2233)-Brugo,M (2091) Robecchetto 2006 0-1 (35) 6...Bd6 7.Qd2 Qa5 8.Ne5 Qxd2+ 9.Kxd2 Bxe5 10.fxe5 Ng4 11.d4 cxd4 12.exd4 Nf2 13.Rg1 Ne4+ 14.Ke3 0-0 15.Ba3 Rd8 16.Bd3 f5 17.Bxe4 dxe4 18.c3 Kf7 19.Nd2 Ne7 20.c4 Nc6 21.Bd6 Costa Trave,J (1950)-Martin Arranz,L (1595) Barcelona 2018 1-0 (48) 7.Nbd2 White should try 7.Ne5 7...0-0N 7...d4 8.exd4 cxd4 7...Qc7 8.Be2 Ng4 9.Nf1 Qa5+ 10.Qd2 Qxd2+ 11.Kxd2 0-0 12.h3 Nf6 13.g4 Rd8 14.Ng3 b5 15.Ke1 Nb4 16.Bd1 c4 17.g5 Ne8 18.a3 Nc6 19.Be2 cxb3 20.cxb3 Nd6 21.Rc1 Bb7 22.Rg1 Sigurdsson,A-Simonsen,S Reykjavik 2011 1/2-1/2 (67) 0–1
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WhiteEloWBlackEloBRes
Spinosa1266Vierjoki,T15240–1
hirotomo1655Vierjoki,T16880–1
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A03 Bird's Opening with 1...d5 (1.d3 e6 2.f4 d5 3.Nf3 c5 4.c3 Nc6 5.g3 Nf6 6.Bg2 Bd6 7.O-O O-O)

A03 Bird's Opening with 1...d5 (1.d3 e6 2.f4 d5 3.Nf3 c5 4.c3 Nc6 5.g3 Nf6 6.Bg2 Bd6 7.O-O O-O)
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1.d3 A00 Mieses Opening e6 2.f4 d5 3.Nf3 c5 4.c3 Nc6 5.g3 Nf6 6.Bg2 Bd6 7.0-0 0-0 A03 Bird's Opening with 1...d5 8.Nbd2 8.e4= dxe4 9.dxe4 Nxe4 10.Na3 8...Re8? 8...Ng4 keeps the upper hand. 9.Nb3 a5 9.e4± aiming for e5. dxe4 9...Ng4 10.dxe4 Threatens to win with e5.White is better. e5 11.Nc4 Bc7
11...Bb8 12.Qxd8 12.fxe5!± Be6 13.Nd6 12...Rxd8 13.Nfxe5 13.Ncxe5± Nxe5 14.Nxe5 13...b5? 13...Nxe5= 14.Nxe5 14.fxe5 Ng4 14...Be6 14.Nxc6+- Re8 15.N4e5 Bxe5 16.Nxe5 Bb7 17.Re1 Rad8 18.Be3 Ng4 19.Bxc5 Nxe5 20.fxe5 Rxe5 21.Bd4 Re6 22.e5 a6 23.Rad1 Bxg2 24.Kxg2 Rde8 25.Kf3 f6 26.h4 fxe5 27.Be3 h6 28.Rd5 Rf6+ 29.Ke4 Rfe6 30.Rf1 Rb8 31.Rf5 b4 32.c4 a5 33.Rfxe5 Rxe5+ 34.Rxe5 Endgame KRB-KR Rc8 35.c5 Kf7 36.Kd5 Kf6 37.Re4 Kf5 38.Rf4+ Kg6 39.c6 Rd8+ 40.Ke6 Rd3 41.Bf2 Rd2 42.c7 Rc2 43.Kd7 Rd2+ 44.Kc6 Rc2+ 45.Kb7 45.Bc5 Re2
46.h5+! Kh7 47.c8Q Rh2 48.Qf5+ Kh8 49.Qg6 Rf2 50.Rxf2 Kg8 51.Rf8# 45...Rxb2 46.c8Q Rxa2 47.Qf5# Accuracy: White = 50%, Black = 14%. 1–0
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trallala-Vierjoki,T17201–0
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A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.b3 Nc6 4.e3 Nf6 5.Bb2 e6 6.Bb5)

A03 Bird's Opening with 1...d5 (1.f4 d5 2.Nf3 c5 3.b3 Nc6 4.e3 Nf6 5.Bb2 e6 6.Bb5)
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1.f4 d5 A03 Bird Opening: Dutch Variation 2.Nf3 c5 3.b3 Nc6 4.e3 Nf6 5.Bb2 e6 6.Bb5 A03 Bird's Opening with 1...d5 6.Be2 6...Qb6 6...Bd7= 7.Bxc6+ White should try 7.c4 7...Qxc6= 8.Ne5 8.a4 8...Qc7 8...Qd6 9.0-0 9.d3 b6 10.Nd2 a5 11.Ndf3 Ra7 12.Ng5 Qd6 13.Qf3 h6 14.Qh3 hxg5 15.Qxh8 gxf4 16.exf4 d4 17.0-0 Bb7 18.Rae1 Nd5 19.Bc1 Nc3 20.f5 Bd5 21.fxe6 Bxe6 22.Bf4 Nd5 23.Nxf7 Qxf4 Panic,N (2407)-Veleski,R (2269) Budva 2009 1-0 9...Bd6 9...b6 9...b5 10.a4 b4 11.d3 Bd6 12.Nd2 Bb7 13.Rc1 Rd8 14.Qe1 h5 15.h3 Qe7 16.Ndf3 Bxe5 17.Bxe5 Kf8 18.c3 Ne8 19.cxb4 cxb4 20.Bd4 Ba6 21.Bc5 Nd6 22.Qxb4 Kg8 23.Ne5 Qc7 24.Bxd6 Molina,J (1797) -Ramirez,M (2036) Sucre 2016 1-0 (44) 10.Nc3N 10.c4 10.Qe1 Qe7 11.d3 0-0 12.Rf3 Ne8 13.Rh3 Bxe5 14.fxe5 f5 15.Nd2 Bd7 16.Qg3 g6 17.Nf3 Rf7 18.Ng5 Rg7 19.Rh6 Nc7 20.Rf1 Bc6 21.Rf4 Rf8 22.Rfh4 Rff7 23.d4 c4 24.Nxf7 Qxf7 Grover,S (2492)-Skosana,S (2057) Durban 2014 1-0 (37) 10...0-0? 10...a6! keeps the upper hand. 11.Nb5± Qb8 11...Qe7± was worth a try. 12.a4 12.Rf3!+- 12...Be7?
12...Rd8± was necessary. 13.Ng4? Only move: 13.Ng6!+- hxg6 13...fxg6 14.Be5 14.Be5 13...Ne4? 13...Nxg4 14.Qxg4 f6 14.Be5+- Nd6
15.Nh6+! Kh8 15...gxh6 16.Qg4+ 16.Qg4? Better is 16.Qh5+- f6 17.Nxd6 Bxd6 18.Nf7+ Rxf7 19.Qxf7 16...f6 17.Nxd6 17.Qh4!= and White is okay. 17...Bxd6-+ 18.Qh4 gxh6?? But not 18...fxe5 19.fxe5 gxh6 20.exd6 18...Bxe5-+ avoids the disaster. 19.fxe5 Qxe5 19.Bxf6++- Rxf6? 19...Kg8+- 20.Rf3 20.Qxh6 Qc7= 20...Kf7 20.Qxf6+ Kg8 21.Rf3 White mates. Qc7 22.Rg3+ Qg7 23.Qxg7# Accuracy: White = 22%, Black = 27%. 1–0
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WhiteEloWBlackEloBRes
trallala-Vierjoki,T17201–0
funplay1362Vierjoki,T14290–1
trallala1343Vierjoki,T15990–1
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