(82) Demler,J (1450) - Becker,A (2050) [E14]
SWCC 4-15-99 (2), 15.04.1999
[Fritz 5.32 (43s)]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Be2 Be7 [5...Bb4+ 6.Bd2 Be7 7.0-0 0-0 8.Nc3 1/2-1/2 Varga,P-Dobos,J/Budapest FS11 IM-B 1995/EXP 50 (8)] 6.Nc3N [6.a3 0-0 7.Nc3 c5 8.dxc5 bxc5 9.b3 d5 10.Bb2 Nc6 11.Qc2 d4 12.Rd1 e5 13.Nd5 Nxd5 14.cxd5 Qxd5 15.Bc4 Qd6 16.0-0 Rad8 17.Rfe1 Na5 18.exd4 exd4 19.Ne5 Nxc4 20.bxc4 Qc7 Kafumbwe,W-Karkanage,I/Luzern olm 1982/BIG 80/0-1 (35); 6.0-0 d6 7.b3 Nbd7 8.Bb2 0-0 9.Nc3 c5 10.Qc2 a6 11.Rad1 Qc7 12.a4 Rac8 13.d5 exd5 14.cxd5 Rfe8 15.Bd3 Bf8 16.Ne4 Nxe4 17.Bxe4 g6 18.Qc3 f6 19.Ng5 Ne5 20.f4 Ng4 21.Ne6 Rxe6 22.dxe6 Bxe4 23.h3 Nh6 24.Qxf6 Bg7 25.Qxg7+ Qxg7 26.Bxg7 Kxg7 27.Rxd6 0-1 Proschinger,T-Doroscenko,M/WchJM-U14 Duisburg 1992/TD 92\06 (27)] 6...0-0 7.0-0 d5 8.b3 Nbd7 9.Bb2 c5 10.Re1 a6 Covers b5 11.Bd3 Ne4+/= [11...dxc4 12.bxc4 Bd6 13.Qe2= ] 12.Qc2 f5 13.Nd2 [13.Rac1 Bd6+/= ] 13...Bd6 14.f3??-+ allows the opponent back into the game [>=14.h3= was much better] 14...Bxh2+! a forceful and devastating end 15.Kf1 Ng3+ 16.Kf2 Qh4 17.Nf1 [17.dxc5 Nxc5 18.cxd5 Nge4+ 19.Ke2 Qf2+ 20.Kd1 Nxd2-+ ] 17...Nf6 The mate threat is Ng4 18.Nxh2 Qxh2 19.Ne2 [19.Rec1 Nfe4+ 20.Bxe4 fxe4-+ (20...dxe4?! 21.f4-+ ) ] 19...Nge4+ [19...dxc4 20.Rg1 cxd3 21.Qxd3 Bxf3 22.Nxg3 Ne4+ 23.Kf1 Nxg3+ 24.Kf2 Qh4 25.gxf3 Ne4+ 26.Ke2 Qf2+ 27.Kd1 Qxb2-+ ] 20.Bxe4 fxe4 Threatening mate... how?. Black gets strong initiative 21.Rh1 [21.Nf4 exf3 22.Rh1 Ng4+ 23.Kxf3 dxc4+ 24.Kxg4 Rxf4+ 25.exf4 h5+ 26.Kg5 Qg3+ 27.Kxh5 Kf7 28.Qh7 Bxg2 29.Raf1 Bxf1 30.Rxf1 Rh8 31.Qxh8 g6+ 32.Kh6 Qh4# ] 21...Ng4+ 22.Ke1 Qxh1+ 23.Kd2 Qxg2 24.fxg4 Black creates threats along the open f-file 24...Rf2 Threatening mate: Rxe2 [24...Qxg4?! 25.Rg1 Qf5 26.dxc5-+ ] 25.Re1 e5 [25...Rd8 keeps an even firmer grip 26.Kc1-+ ] 26.dxc5 d4! decapitation 27.cxb6 [27.exd4 a last effort to resist the inevitable 27...exd4 28.Bxd4-+ ] 27...d3 The mate threat is Rxe2 28.Qc3 [28.Qd1 the only chance to get some counterplay 28...dxe2 29.Qc1 Rd8+ 30.Kc2-+ ] 28...Rxe2+ 29.Rxe2 Qxe2+ 30.Kc1 Qxe3+-+ [30...Rf8 31.Kb1 Rf1+ 32.Bc1 d2 33.b4 dxc1B 34.Qxc1 Rf2 35.Qc3 Qxa2+ 36.Kc1 Rf1+ 37.Qe1 Rxe1# ] 31.Qd2 Qg1+ 32.Qd1 d2+! a check from hell 33.Kc2 Qxd1+ 34.Kxd1 e3 Do you see the mate threat? 35.Bc3 Bf3+ [35...Bf3+ 36.Kc2 d1Q+ 37.Kb2 Rd8-+ ; 35...Rd8 36.Kc2 d1Q+ 37.Kb2 Rd2+ 38.Ka3 Qc1+ 39.Kb4 a5+ 40.Kb5 Qxc3 41.a3 Qxb3+ 42.Kxa5 Qxa3+ 43.Kb5 Rb2# ] 0-1