Bring the hidden pieces!

Title is a hint, use it! Will you solve both puzzles without mistakes? 

Same position, different ending

[RAINBOW]

Nice

Thanks. That was fun.

Nice

Very nice

Solved the second puzzle first try!  (But the first one took about four dozen attemps!)  Lol

Solved...aren't both the same? I prefer the first board :)

http://chess-teacher.com/1632.html

Thanks guys! They differ only in black's response.

Kapanova, just the opposite than me.  I only found the 2nd line in analysis afterwards, if it happened in the game, I'd have probably missed it. 

Interesting stuff. And of course the second one is better, because you bring the rook also.

Good puzzles! 7.Ng4 is also mate in the first one

Oh, how could I miss that?! Thanks for pointing it out. I'm so sorry.

Yes NewArdweaden, I only included the first one because it happened in a game (not recent one, but one from 2012 I think). I agree with you completely! It is also compatible with the title. 

Neward, I missed you! You only cares about chess here?

Also 6. Qf7+ Kd6 7. Qd7# in the first one.

And the only reason the second one was easier was because I got the general gist from the first one!  :)

Kapanova, another reason why only 2nd one should be included. I missed too many double responses for white. :)

RachelRima, thank you dear, I hope you enjoyed it (and found some new inspiration to beat Impossible). ;)