What about 28...e4!! I think that move was brilliant, preparing an great counter-attack to get out of the pinned knight situation. Tal had nothing after that. This is a great game, really shows Korchnoi's great fighting/counter-attacking ability.
Does Tal annotate this game anywhere; from studying his games I'm sure he willingly sac'd the pawn thinking he had something either with a Qxh6 or he thought the pinned knight was very strong, overlooking 28...e4. The way he sac'd things I thought he was maybe thinking of sacking the Bishop and playing Qxh6 but I think that just leads to a quicker loss.
Originally posted by homedepotov 23. b3 does seem shocking coming from a player of Tal's caliber. He loses a pawn and his queenside falls apart.
Why not simply 23. Nxf6+, Nxf6; 24. Rad1?
21. Be4! is Liberzon-Noval, Moscow-Praque 1968
(After 22. ... Nd5 =) Other possible moves are:
23. a4; 23. g3; and 23. Qg4!?; Qb6! which is given as equal. This and the following are derived from "Complete Games of Mikhal Tal 1967-73" by H. Thomas.
His annotations are taken from a number of soviet sources.
27. Rec1? Besser ist. 27. Bf7!? Qf7 28. Qc3 Rd4! with a slight edge for black.😀