Aranytiz round 3 - Checkmated

In round 3, I played the scotch which I studied 20 years ago and used to become an international master, but did not like it. After his 5..Nf6, I got a new idea of Qe2 to prevent black's usual development. 

I missed his Ba6 idea to prevent my short castle which would give me an advantage.

In the opposite side castled position I missed his sacrifice, but my position was still better, but I needed to find Kd2 to stop the checkmates, which I missed.

I looked all other moves, but the king move!

Today I will play an other prodigy, 14 years old Alex Krstulovic