newzild: An interesting story behind this game.
Eduard Gufeld found an amazing win after 18...Qb6. He showed the position to Bobby Fischer, who could not find it.
Can you find it?
I looked for a long time, and I found the general theme, but I got the move order wrong.
Here is the win, according to Gufeld:
(instead of 19. Bc2)
(19...Qb4 20. Bc3 Qxc5 21. Nxc6 Bxc6 22. Bxg7 wins, according to Gufeld, although 22...Qd5 looks like a good try)
20. Nxf5! exf5
21. Bc4+ Kh8
(I missed this astounding move, which threatens 23. Rh6)
(22...Bxd6 23. Bxg7+ Kxg7 24. Qg5+ mates quickly)
23. Qh6 Rg8
Gufeld says this move wins, but I found a way for Black to reach an endgame, albeit a losing one:
26. Bxe5+ Rg7
27. Rxb7 Rd8
And White will soon play Bxg7+ leaving him up by an exchange and two pawns.