Chess improvements 1 - attack on the king exercises

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chess_pagol
Hi 
chess cafe members and masters, this is a useful post to improve our strategies on attacking on king, there are other themes we can work on later. So i started first of the series of "chess improvements". Following is the first exercise, more exercises coming soon on "attacking the king". In these exercises there are series of moves to checkmate king, what is the first move to start the strategy and then what next moves will be ? post your answer in comments. solutions will be put in a separate post but never look at solution post first but try to guess what is the best way to checkmate the king then look for solution. 
 
Don't see solution post first, But try to find best moves on your own for practice 
 
Exercise 1: Black to move 
 

 

Exercise 2: White to move

 
Hope it will help everyone in our group so that we never doubt on our strategies on attacking the king if this is our weakness or we have lack of expertise on this topic.
I_Ahmed

I think there is no forced mate, but black will win this easily. I would start with 1...h5 2. g3 h4 3. Kxh2 hxg3+...

chess_pagol

Almost near solution coming soon.

I_Ahmed

Well, if you move for black I could be mate you!