Castagna,R (2177) - Bohnenblust,S (2207) [E60]
1.d4 Sf6 2.Sf3 g6 3.c4 Lg7 4.g3 0–0 5.Lg2 d6 6.0–0 c5 7.d5 e5 8.Sc3 Sg4
[8...Se8; 8...Sa6]
9.e4
[9.h3 Sh6 10.e4 Sa6 11.Le3 ½–½ Malaniuk,V - Fedorov,A/Russia Cup II, Moscow 1996]
9...f5?!N Playing against the pawn chain
[9...Sh6 10.Tb1 Sa6 11.a3 Ld7 12.b4 ½–½ Gligoric,S-Velimirovic,D/JUG-ch 1991/TD 91\07; better is 9...a6 10.h3 Sf6 11.Dd3+=]
10.Sg5 h6 11.Se6 Lxe6 12.dxe6 The passed pawn on e6 quickly leads to threats 12...Sc6 13.Sd5 Sf6 14.Le3?!
[better is 14.exf5!? gxf5 15.Te1±]
14...Sxd5
[14...Sxe4!? 15.Lxe4 fxe4+=]
15.Dxd5
[15.exd5; 15.cxd5]
15...De7 16.f4
[=16.exf5 gxf5 17.Tfe1 f4=]
16...Sb4 17.Dd2 exf4?!
[better is 17...fxe4 A) 18.Lxe4 exf4 A1) 19.Txf4 Txf4 20.Lxf4 A1a) 20...Ld4+?! 21.Le3 (21.Kh1?! g5 22.a3 Sc6 23.Le3=) 21...Dxe6 22.Lxd4 Dxe4 23.Lc3 Sc2 24.Dxh6 De3+ 25.Dxe3 Sxe3 26.Te1 Sxc4 27.Te7+=; A1b) 20...Dxe6 21.Lxb7 Tb8 22.Dxb4=; A2) 19.Lxf4?! 19...Ld4+ 20.Kg2 g5 21.a3=+; B) 18.fxe5 18...Lxe5 19.Lxe4 Dxe6 20.Lxb7= (20.a3?! Ld4=+) ]
18.Lxf4?! Exerts pressure on the backward pawn *
[better is 18.Txf4!? Le5 19.Th4 f4 20.Lxf4 Lxf4 (20...g5? 21.Lxe5 gxh4 22.Lxd6+-) 21.Txf4±]
18...Ld4+ Menacing 19.Le3
19...Dg5?
[19...Lxe3+ would keep Black in the game 20.Dxe3 f4= (‹20...Dxe6?? 21.Dxh6+-; 20...Sc2?! 21.Dxh6 Sxa1 22.Dxg6+ Dg7 23.Dxg7+ Kxg7 24.Txa1 f4! 25.Td1+=) ]
20.Dxd4!
[20.Tae1? Sc2 21.Dxd4 cxd4 22.Lxg5 Sxe1 23.Txe1 hxg5 24.e7+=]
20...cxd4 21.Lxg5 hxg5 22.exf5 Txf5 23.Tad1 Txf1+ 24.Txf1 Tf8 25.Lxb7 Txf1+ 26.Kxf1 Sd3 27.Ld5 Kf8 28.b3 Sc1 29.Le4! Sxa2 30.Lxg6 Ke7 31.Lf5
31...Kf6? Zeitnot
[31...Sc1 permettrait de lutter un peu plus longtemps 32.h4 gxh4 33.gxh4 d3 34.h5 d2 35.Lc2 Kxe6 36.Kf2 Kf6 (36...Sd3+ 37.Ke3 Se5 38.Kxd2) 37.Ke3 Kg5 38.Kxd2 Sa2 39.Lg6]
32.h4! securing the advantage in this game 32...gxh4 33.gxh4 The passed pawn on h4 will quickly become a dangerous weapon. securing the lead 33...Sb4 34.h5 Sc6 35.h6 Se7 36.h7 Kg7 37.Le4 1–0