Hi Der Bayer,
Lets begin 🙂
First things first, your opponent should take a ruler to the back of his hands for
blocking the c pawn so early. Especially when black has played d5. But, to each there own.
Bg5 does not increase pressure on black - and 4...Ne4 is problematic for white, where
white will either lose his dark bishop early or will lose the QN leaving a horrible light
square weakness, without having to trade away his dark bishop!
White should be rethinking Bg5 right about now
Bd7? - Relieving the pin on the king? - No.
Be7 releases Bg5's pressure, accelerates a Kingside castle, and develops the piece
to an accurate square. Your problems would have been stiffled - and things rather
even with this very simple developing move!
After Qh4, black is presented with a problem. He's going to be behind in material.
What tricks lie in blacks arsenal?
The b2 pawn is weak, whites king safety is relatively low, and his rooks are not
connected. Hmmm... Whats wrong with Qb6? or even Qb8! - dubious! (there is something
wrong..but its sneaky!)
Now, the accurate response here is Nxd5! - Any other move, begins to add up to
black equalizing, in an open game, with a nice pawn chain
Its a gamble... I'd have rolled the dice 🙂 (and maybe been destroyed for it?)
Accurate play would have been Be7
Now things are already...disastrous... but Qxc3+ is clearly best!
(OK, it doesn't matter... but... it does... mentally you should see this first)