(19) Peter,R (1850) - Castagna,R (2155) [A15]
1.Sf3 Sf6 2.e3 g6 3.b3 Lg7 4.Lb2 0–0 5.c4 d6 6.d4 e5 7.dxe5 Sg4 8.Ld3N
[8.Sc3 Sxe5 9.Le2 Sbc6 10.0–0 a5 11.Sxe5 Lxe5 12.Dd2 Le6 13.Tac1 f5 14.f4 Lg7 15.Lf3 Dd7 16.Tfd1 Df7 17.a4 Tfe8 Mueller,H-Bassler,M/BL 1983/BL 80/½–½ (58); 8.Dd2 Sxe5 9.Le2 Sbc6 10.h3 Sxf3+ 11.Lxf3 Se5 12.Le2 Dg5 13.Kf1 Dh4 14.Sc3 f5 15.g3 De7 16.f4 Sc6 17.Sd5 Df7 Nippgen,G-Tischer,G/BL 1988/BL 80/1–0 (54)]
8...Sc6 9.Dc2 dxe5 10.a3 Covers b4 10...f5 11.e4?!
[11.c5 De7=]
11...fxe4 12.Lxe4 A comfortable square for the white bishop 12...Sd4 Menacing 13.Lxd4 exd4 14.Dd3 c5?!
[14...Sf6!? 15.Sbd2 Sxe4 16.Sxe4 Lf5 17.0–0 Te8 18.Tfe1 De7 19.Sfd2 Tad8=+]
15.Sbd2 Sf6 16.0–0 Dc7 17.Tae1 Ld7 18.Te2 Tae8 19.Tfe1 Sxe4 20.Sxe4 b6 21.Sg3?
[21.b4 Lf5=]
21...Txe2 22.Txe2
[22.Sxe2 Lc6 23.Sd2 Db7-/+]
22...Lc6?
[better is 22...Lg4!?-/+]
23.Sg5 Te8 24.Txe8+ Lxe8 25.De4 Dd7 26.Se6??
[better is 26.Dd5+ would keep White in the game 26...Dxd5 27.cxd5=+]
26...Lf6??
[better is 26...d3 and Black is on the road to success 27.Sf1 d2 28.Sxc5 bxc5 (28...d1D?! 29.Sxd7 Dxd7-/+) 29.Sxd2 Lb2–+]
27.Sf4 Lf7 28.Sd3 Le6 29.Se5 Lxe5 30.Dxe5 d3 Pushes the passed pawn 31.Se4 d2 32.Sxd2 Lxc4 33.Db8+ Kg7 34.De5+
34...Kf7??
Black is ruining his position[better is 34...Kg8 was possible 35.Db8+=; 34...Kh6?? 35.Df4++-]
35.Df4+ Ke7 36.bxc4 Da4 37.De3+ Kd7 38.g3 Dc2 39.Kg2 a6 40.Dh6
[40.Sf3 might be the shorter path 40...h5+-]
40...Kc6 41.Df4 b5 42.cxb5+
[42.Se4! Dd3 43.Df6+ Kc7 44.De5+ Kc6 45.De6+ Kc7 46.Sxc5 Df5 47.Sxa6+ Kb7 48.Dxf5 gxf5 49.cxb5]
42...axb5 43.De4+ Dxe4+ 44.Sxe4 b4 45.axb4 cxb4 46.Kf3 Kd5 47.Ke3 Kc4 48.h4 h6 49.g4 Kd5 50.f4 White intends g5 * 50...b3 51.Sd2 b2 52.Sb1 h5 53.g5 Kc4 54.Sd2+ Kd5 55.Kd3 Kc5 56.Kc3 Kd5 57.Kxb2 Kd4 58.f5! the final blow 58...gxf5 59.g6 1–0