At Fm schiller:Im sorry.i figured it out after i posted the comment.i was not opt to delete it coz i was in a computer shop and i had to go.tnx anyway.:).i hope you submit more interesting chess games. 

@spider: 21. Rxc8+ Kd7 and there is no win.

nice games

Tal v/s Johannsson

On move 10. Bb3 could have been exploited by black as: 11...b4 12.Nd5 exd5 13.exd5;

If night goes to e2 square then 12.Nxe4 with a double attack on the bishop.

Nice...

great games from great world champions...doing that needs a very deep but precise calculations...

Such a brilliant era of chess.

Nice games.