
Puzzles from the starting position
Can you make up a game that goes like this?

1. -- -- 2. -- -- 3. -- -- 4. -- -- 5. -- Nxh1#
Or another, similar one:

1. -- -- 2. -- -- 3. -- -- 4. -- -- 5. -- -- 6. gxf8=N#
You have to make up the moves on the -'s for both games, such that 5... Nxh1 is legal and mates, and in the other puzzle that 6. gxf8=N is legal and mates.
EDIT: Puzzle added!Suppose your opponent copies all of your moves. So if you play 1. d4 he plays 1... d5, if you play 1. Nh3 he plays 1... Nh6. Can you find a mate in four for white, assuming black copies all white's moves? There are three possible solutions, but finding one is already very good


So the moves a, b, c, d, with a' being the mirrored move of a, have to be
1. a a' 2. b b' 3. c c' 4. d#