Sideline
The queen sortie 22.Qg3-g5 (with unmistakable mate ambitions in the h-file) could have been countered by Black with 22...Qc7-b6+ (diagram). Now the sequence
23.Ka1 Bxc2 leads to what?
A) victory for White;
B) perpetual check;
C) victory for Black.
Solution
