My favourite puzzle

Eugen
Eugen
Jun 3, 2007, 5:09 AM |
2

I would like to share with you my favourite chess puzzle. It is black to move and mate in a few moves (the number of moves depends on how white would reply). Anyway there is no chance for white in this position. When I first faced this puzzle I couldn't solve it without a hint. Perhaps you'll manage to do so. I hope you see that it is only white queen who protects against mate.