Today we will see a typical sacrifice on f6 (f3) in order to destroy a king’s pawn cover. Earlier we discussed the classical Bishop sacrifice and Lasker’s double Bishop sacrifice which had the same goal.
Before sacrificing piece on f6 (f3) one should carefully evaluate the possibility of participation of his major pieces along the g- or h- file (rook lifts are a very typical theme here) and possible ways of declining the sacrifice.
Here is an instructive example:
Tal against Dmitry in 1970
In the given battle White has already lifted his rook and knight and is ready to jump on f6, while on the other side Black’s queen is already cut off from the main battle field although she is attacking the White rook. Therefore White’s queen has to leave the first rank with tempo, which is quite possible after opening up the h-file. In general White’s position has great potential.
Here Tal played:
18. Nf6+!! gxf6 forced
There is no way to decline the sacrifice. If Black plays 18…Kh8 then Nxh7 is simply enough to win.
As discussed the White queen needs to leave the first rank with a gain of tempo.
Black is preventing White’s queen being activated with check. If Black plays Kxh7 then Qh5+ followed by Rg1! wins
20. Rh4 Kg7 21. Qc1
Threatening Qh6 mate.
21…Ng8 22. Bxg8
Black resigned here in view of following lines:
a) If 22…Kxg8 then 23.Rb3.
b) If 22…Rxg8 then 23.Qh6.
Otherwise there is no defence to Qh6 except by surrendering the queen on b1.