ok

dama x caballo !!

ok

1. ... Q:f3! 2.g:f (2.Q:b5 ab 3.g:f b:c; 2.N:d6 R:g5) R:g5+ 3.Kh1 C:h3 4.R:d6!! (much better than (a)4.K:d6? Bg2+ 5.Kg1(or 5.Kh2 Ke5!! 6.Rd3 B:f1 7.R~ c:d -+) Ne5!! 6.Rd3 Bh3+ 7.K~ B:f1 -+; (b)4.f4!? Bg2+ 5.Kg1 B:f4 6.f3 (6.Rfe1? Bf3+ 7.Kh1 Bh2 and 8. ... Rg1#) B:f3+ 7.Kf2 B:d1, and black has material advantage; (c)4.Rg1 Rh5 5.Rg3 (seems the only move, otherwise black can make the move Ne5 with ideas of N:f3 with mate and Bd7+ with taking the queen) B:g3 6.f:g Nd4! (possible 6. ... Ne5, but there, except the main line, white has bad endgame after 7.N:e5 Bd7+ 8.Qh4! R:h4 9. g:h Bb5) 7.Kg1 N:f3+ 8. Kf2 Bg4 or 8. ... Ng5, and black is going to continue its attack with material advantage; (d)4.Ne3!? Rh5! (black has nothing after 4. ... B:f1 5.N:f1 Ne5 6.Ng3) 5.Kg1 (5.R:d6? cd 6.Rc1 Ne5! -+) and there black has a choice between draw after 5. ... Rg5+ or continuation with Lasker's compensation and some initiative after, for example 5. ... Ne5 6. Qe4 Rh4 7. f4 g5 etc.) 
So, 4.R:d6!! c:d 5.Rd1! (with idea of taking on d6 with rook) Bg2+ 6.Kh2 B:f3 7.R:d6 Ne7 8.Ne3! a5 9. Qf4 Rh5+ 10.Kg3 Cc6 with very unclear position. Black has Lasker's compensation for the queen, but their initiative is beaten off and white can organize a passing peace on the queen's side. I think, this is a position for two results - only white can win here.

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0_0

не публикуется... 
это глюк или премодерация?

http://vkontakte.ru/id11581399

Queen sac

first move has to be Q X f3

Queen sac

1 ... Qxf3 
2 gf Rxg5+ 
3 Kh1 Bxh3 
4 Rg1 Rh5 
5 Rg2 Bg4+ then Bf3 and the White King is doomed 
 
4 Rf1 Bg2+ 
5 Kg1 Bxf3+ 
6 Kf1 Rh5 with the same theme of Bishop on f3 making guard of the enemy king and Rh1 coming 
 
4 f4 Bxf4 
5 f3 Bxf1 material is Queen for Rook, Knight and two pawns. 
 
Nothing better? 
 
4 f4 Rh5 
5 f3 is bad for Bxf1 with check, and the material is abundatly over 
 
4 f4 Rh5 
5 Kg1! Bxf4 
6 f3 Rg5+ 
7 Kh1 Bg2+ 
8 Kg1 Bxf3+ 
9 Kf2 Bxd1 with slight material plus, I found nothing better 
 
5 Kf2? permit Bg3+ with the activation of the other rook while White King is still in the center 
 
Have to improve the quality of visualization, I'm not good of fixing weel in memory the positions that arise on the analisys. 
 
How to, dear Pogonina?

Queen sac

Sorry, it is on the seventh move that Kf2 is weak, while Kh1 necessary.