
Solution

1… Qg1+ 2. Kxf3 Qh1+, followed by Qxc6
Black forces the white king to capture the knight, which then allows black to skewer the white king and capture the undefended white queen.
1… Qg1+ 2. Kxf3 Qh1+, followed by Qxc6
Black forces the white king to capture the knight, which then allows black to skewer the white king and capture the undefended white queen.