Puzzle of the week #328

Level: 
2-Knight
Chess Diagram: 

[Event "Puzzle #328"][Date "2017.11.26"][Result "1-0"][SetUp "1"][FEN "r1bq2k1/ppp2r1p/2np1pNQ/2bNpp2/2B1P3/3P4/PPP2PPP/R3K2R w KQ - 0 1"]

In this game white has decided not to castle and started attacking instead. Qh6 and Ng6 are already attacking the castle but black's defence seems to be holding on strong. It is white to move, Ng6 is under attack and white must decide what to do about it. Your tasks:
a) List the 6 option white has to choose from to deal with the attack on Ng6 and select the correct one to do
b) Find the most powerful moves white can play in this position to win the game

Total available points for this puzzle is 20. The answers will be published next time together with puzzle #329.

Puzzle #327 solution:
Game Dileesh - Constantin, chess.com 2017. The best answers are by Coby, Blake and Matthew:
a) Attack the {f2} weak pawn
b) The best line is:

[Event "Puzzle #327"][Date "2017.11.19"][Result "0-1"]1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. h3 O-O 5. Bg5 Nc6 6. c3 d5 7. exd5 Na5 8. b4 Nxc4 9. dxc4 Bxf2+ {Joey, Lyvia and Eric wrote "Bxf7" which is impossible} (9... Ng4?? {Brian} 10. Bxd8) (9... Bg4? {Zheng Yu} 10. hxg4) 10. Kxf2 Ne4+ 11. Ke3 Nxg5 {Coby, Blake, Matthew - now white cannot castle and black should win this position}

Correct solutions:
Coby, Blake, Matthew - 15 points
Joey - 14 points
Lyvia, Eric - 10 points
Darius - 8 points
Brian - 6 points
Lucas - 5 points
Zheng Yu - 2 points

Standings:
Matthew - 67 points
Lyvia - 60 points
Coby - 54 points
Eric - 44 points
Glyn - 33 points
Blake - 32 points
Joey - 18 points
Zheng Yu - 17 points
Brian - 15 points
Justin, Ellie, Darius - 10 points
Lucas - 9 points
Jacey - 3 points

Comment: 

Attacks and defences