Lucky Charms II

Just a little (kinda hard) puzzle to keep you entertained if you're experiencing ridiculous weather like I am.

Ordinary Sudoku Rules Apply. Additionally:

1. Cells with gray boxes must contain even digits

2. Cells with the lucky charm symbol inside are lucky. The digit inside a lucky charm cell must have that many adjacent and diagonally adjacent neighbors within 1 of the digit. e.g. if a lucky charm cell contains an 8, all 8 of the surrounding cells must be 7, 8, or 9. If it contains a 4, then EXACTLY 4 of the surrounding cells must be 3, 4, or 5.

That's it! Enjoy! :) You can play it here.