This sacrifice is always fascinating, but the question is
always, “Is it sound?” Sometimes it is
and sometimes it isn’t. The basic
conditions for the sacrifice to work were given in Vladimir Vukovic’s The Art of Attack in Chess. This classic work is still an excellent
treatise on tactics, but because Vukovic didn’t have chess engines to help him,
the book necessarily contains a lot of tactical errors in the analysis, but it
is still a valuable learning resource.
The problem is that even with the guidelines Vukovic lays down to help
determine if the sacrifice is correct, you cannot rely on them 100% because the
positions can get very complicated
and even if the ‘rules’ say the sacrifice is good, there may still be a hidden
resource for the defender.
The following short, sharp encounter between Kottnauer and
Kotov played in the Prague vs. Moscow match in 1946 is a good example.
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