This is an actual 5 min live chess game. I was playing white and discovered a nice mate with a pawn... check it out!

I find the move of Kg6 instead of Ke6 was a big mistake.

Unless protected by pawns, I try to keep my kind inside as much as possible. Is it a good strategy ?

Please share your thoughts.

 Best move is Ke8..

If Ke6, then white will play Nc3

You are right.

But Ke6 isn't bad neither.

Black could then play Nb4, then Q4e, c6, a2, Na6
I agree it is not the best position, but we still have a game no  ?

 but black's in the losing position..

10. Qg3+ Kh5 11. Bf3+ Bg4 12. Bxg4#

also

12. Qg5#