Tactical combinations

In between two tournaments when you have no time for serious work on your chess, solving easy combinations can be useful practice.
I will share with you some combinations from tournaments when I recently played (Glasgow, Helsingör)  and from Junior World Championship in Athena.

1. White to move

2. Black to move

3. Black to move

 

4. White to move

 

5. White to move

6. Black to move

Questions:

1. This is position from yesterdays game from Athena Grandelius N. (E2562) - Grover S. (E2516).
    Nils played 1. Ne2 ? and went on to win a game later.
    How he could win a game with a help of nice queen sacrifice?

2. Position is from the game Bejtovic J. (E2385) - Aagaard J. (E2506) Glasgow 2012.
    Is it better to play on h8 or f8 ?

3. This one is really tricky. Swan I. (E2259) - Bejtovic J. (E2385) Glasgow 2012.
    How should Black play?

4. This position is from yesterdays game Debashis D. (E2446) - Yilmas M. (E2543) from Athena.
    White finished in nice style. How?

5. This position is from  a game Johansson A. (E2029) - Petersen P (E2155) from Helsingör.     
    How White could win the game?

6. Zude E. (E2384) - Popovic D. (E2579) from Politiken Cup in Helsingör.
    What played Black here?

Answers will be published tomorrow.