Black To Move
Larsen had played a nice game up to this point, but here he does something quite brilliant.
20. ... Rc5! FORCING white to win the exchange!
Play followed 21.Bxc5 dxc5
What has black achieved? He has total control of the dark squares. White's king is also very exposed after moving all of the pawns around him. Black would like to invade with say Qe5 or Qg3 and Qf2. Then, the white king could find itself in serious trouble.
White played 22.Rd5.
Here Larsen played 22. ... e6, but this may not be correct.
22. ... Qg3 seems to be the best way to keep Black's (!) advantage.
This is quite an excellent exchange sacrifice in any regard. If you look at the position on move 20, you would never imagine that anything remotely interesting would go on in the position.
22. ... e6 23.Qxc5! Qg3 was how the actual game continued.
Then 24.Rg5 Qf4+ (another brilliant idea that just doesn't quite work ... 24. ... Bh6 would cut black's losses but doesn't appear very appetizing.) 25. Kc2 f5
The rook is trapped out of play, and black is preparing to become very active against white's king (Rd8).
26.exf5 exf5 27.Rd1?
27.Qxa5! makes it hard for black to proceed.
(Rd8 is prevented, and black can't really make progress)
allows 27. ... Qxh4
Larsen instead tried 27. ... b6.
which was met by 28.Qe7? (28.Qd6 wins! 28. ... Qxh4 29.Qg3!) Qxh4 29.Rd7??
Here, black has a nice win.
(See the actual game below)
This is a very interesting game with more than a couple flashes of brilliance from Larsen. 20. ... Rc5, for example, was actually the best move on the board!
Note: Around move 32, Larsen is trying to lure the white king to a dark square, so that he can take on g5 WITH check. By the time he achieves this, he has something a little better.
I hope you enjoyed it as much as I did.
* Special thanks, once again, to Greenpawn.