Solve the Puzzle - 1

This is my first puzzle forum!, you can try solving it!

What's the difference between Qa1 and Qb2

there are multiple soulutions towards the end?

There are workable alternatives all over the place. You can't do that in a proper puzzle since the solver can't read your mind to find out which one of the winning moves you had in mind. 

Its my first time, so I'm sorry there are multiple solutions....

No need to be sorry, need to correct. This happens to puzzle composers regularly even the best ones. The remedy is to analyze the errors and seek for a way to get rid of them. If you succeed you are the celebrated goad (greatest of all day), if you fail after investing a fair amount of energy and time, then move on to another puzzle. But if you give up too soon you will never produce a decent puzzle since first setups are often flawed.

And don't forget to engage an engine to test your puzzles before you show them to a human eye. Engines are poor in making puzzles but they are awesome at testing them!

Hard puzzle. This is a test dont worry

This may not be the worst puzzle of all time but it is certainly the worst puzzle solution I have ever seen. Test or not.