This is a classic position that some of you may not be aware of. Many don't believe that this could have been found OTB but believe, instead, that it was a post-mortem. Either way, it is truly a spectacular position. See variations to clear up any confusion. Enjoy.

Nice. But Do You Think The White Ones Will Move Like That? :]

The sequence is forcing. There are no better moves after 31.Na4. perhaps 31. b3 but white's understandably reluctant to undouble black's pawns. This, however, would be much better than the game continuation. all the other potential moves have been delineated in the variations. 31... Rxc2 is winning.

one more variation to show that it is winning;