Puzzle of the week #235

Level: 
2-Knight
Chess Diagram: 

[Event "Puzzle #235"][Date "2013.10.27"][Result "1-0"]1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 d6 5.O-O d5 6.exd5 Nxd5 7.Nxe5 Nxe5 8.dxe5 Nb4

Replay the opening moves available for this game. Your tasks:
a) Show the best line for White from now on
b) Propose a better move for Black instead of 8... Nb4
c) Which pawn move by Black was wrong?

Total available points for this puzzle is 15. The answers will be published next week together with puzzle #236.

Puzzle #234 solution:
Bishop's opening trap. It was good to see so many good answers! My pick is Cody's answer:
I pick (c) because White is sacrificing the Queen, but Black did not notice he was not protecting the weakest spot f7.

[Event "Puzzle #234"][Date "2013.10.21"][Result "1-0"]1.e4 e5 2.Bc4 Nf6 3.d4 c6 4.dxe5 Nxe4 5.Ne2 Nxf2 {Solution} 6.O-O Nxd1 7.Bxf7+ Ke7 8.Bg5#

Correct solutions:
Toro, Jalen, Cody, Coco, Eric, Brandon, Oliver, Jeffrey, Illya - 20 points
Brian - 10 points
Mrinal, Aaron, Benjamin, Bradley - 1 point

Standings:
Toro - 43 points
Jalen - 41 points
Coco - 39 points
Cody, Brandon - 37 points
Eric - 36 points
Oliver - 35 points
Illya - 33 points
Anya - 23 points
Bradley - 22 points
Brian, Jeffrey - 20 points
Mrinal - 17 points
Aaron - 14 points
Benjamin - 7 points

Comment: 

The f7-weak spot (3)