Queen-Knight cooperation

IM attilaturzo
Sep 1, 2010, 1:06 PM |

I solved my daily 5 puzzles. The first 4 were easy and needed only 1 minute for all of them, then the last one was hard, I used 3 minutes to solve it. So Today I worked 4 minutes on the puzzles. 

Can you solve the puzzle which gave me the challenge? Smile