Originally posted by cmsMaster
Very nice, quite interesting too. I'd be hesitant to make a sacrifice as such, because there doesn't seem a clear way to follow - my main worry with that type of sacrifice is that you don't have a completely open e file to work with even after the sacrifice, which makes the attack hard to see. What factors led you to decide that the sacrifice was worthy?
Fritz says 14.Ng5 instead of 14.Nxf8?! gives you a nearly decisive advantage.
I took on d4 with knight in 9th move, with hope to knock on e6 somehow like in this famous game:
[Event "Moscow International Tournament"]
[White "J Capablanca"]
[Black "E Bogoljubov"]
1. d4 d5 2. c4 e6 3. Nf3 dxc4 4. e4 c5 5. Bxc4 cxd4 6. Nxd4 Nf6 7. Nc3 Bc5 8.
Be3 Nbd7 9. Bxe6 fxe6 10. Nxe6 Qa5 11. O-O Bxe3 12. fxe3 Kf7 13. Qb3 Kg6 14.
Rf5 Qb6 15. Nf4+ Kh6 16. g4 g5 17. Qxb6 axb6 18. Rd1 Rg8 19. Nfd5 Nxg4 20. Ne7
Rg7 21. Rd6+ Kh5 22. Rf3 Ngf6 23. Rh3+ Kg4 24. Rg3+ Kh5 25. Nf5 Rg6 26. Ne7 g4
27. Nxg6 Kxg6 28. Rxg4+ Kf7 29. Rf4 Kg7 30. e5 Ne8 31. Re6 Nc7 32. Re7+ 1-0
In my game 11...b4 seemed to me risky move for black (in such positions flank operations with unfinished development cant be good idea) and I started to search how to punish the opponent for that and idea to sacrifice knight for leaving black king in center liked me very much - because I saw that after 14.Nxf8 black should take on f8 with rook, because if 14...Kxf8? then I would play 15.Qc4! winning. After 14...Rf8 I didnt see good plan for black how to consolidate their position and get their king our of center - they cant get their king to kingside (because Black cant avoid from whites bishop on a3), but queen side is too open for whites rooks.
When I planned 12.Rd1 and 13.Nxe6 I though only about 14.Nxf8, but also Rybka in position after black 13th mover says, that 14.Ng5 is better. But after 14.Ng5 Qb5 (only good move) 15.Qxb5 axb5 16.Nxf7 Rg8 17.Rd8+ Ke7 18.bxc3 Bb7 Rybka rates this position as equal and I would agree that dont need to be engine for making good defence for black.
As equal rybka rated position after 14.Nxf8 Rxf8 15.bxc3 after which black according to Rybka should play 15....Qa5 (instead of 15...Qb5) on which white have many possible answers, but as I said Rybka rates this position as equal which means that sacrifice was at least correct. But I`m not sure that analysing more long time engine won`t find whites position
as better or even winning. Anyway - maybe progs can defend such positions, but for humans it definetly is uneasy.