Mate in 4

mating with 2 knights and queen+rook sac.

if black don't move away the queen and make exit for the king,then he loses the queen ext round and white's winning.

hopefully there's no flaws, and if there is one, please point out...

I analyzed this in shredder chess, just to see what it would say, and after 3. Nd4, it resigned, seeing the queen loss was imminent.

In other words, you'd beat the computer. Well played!

1. Ba5!! 1. QxN4?

In my opinion this should not be named as mate in 4 because of the fact the the mate in 4 can be avoided. We should only name a puzzle as mate in # if the mate is unavoidable in any way. So this is just a plain puzzle.

 hmm...missed that. but black rather take the queen than the knight