Black just played 1… Qf4 attacking the unprotected knight on g4. What should white play?
See the solution…
Solution chess puzzle #8
Okay things are not so difficult if you see the pattern. The knight on d5 is overworked. The poor animal has to protect the bishop on e7, his queen and the import f6-square. And if you see ‘something with a knight on e6’ the answer is quite obvious:
2. Rxe7 Nxe7 3. Ne6! and black can resign. It is either mate or he loses his queen. For instance 3… Qxh6 4. Nf6# or 3… fxe6 4. Qxf4