Analyzing a Position
I would like to help but your rating is way too high for me so any of my comments would be useless if you are that good here 2064 turn based surely you can be able to work it out 
sorry misread your comment as you were saying you put this puzzle as a exercise for us ,right ?
At first glance I like Kxd5. Besides capturing a passed pawn, it attacks the rook, puts pressure on the queening square, and moves the K closer to defending the three pawns. If then 2.R3c1 a1=Q 3.Rxa1 Bxa1 4.Rxa1 leaves Black ahead by two pawns. White could interpose 2.Rd1+ but that doesn't help. E.g. 2...Nd3+ 3.R1xd3+ cxd3 4.Rxc8 but then 4...a1=Q. Or 2...Kc5 3.Ne4+ Kb4 when White has nothing better than R3c1, etc. If the black knight were missing then White would have 3.Ne6+ winning the bishop.
Alright good work on the first one, now imagine it with a white pawn on e4, so Kxd5 isn't possible. What would you think of then?
Alright good work on the first one, now imagine it with a white pawn on e4, so Kxd5 isn't possible. What would you think of then?
1...Kd6 attacking rook and defending the queening square. White can't profitably interpose any checks so probably 2. Rc1. But no, that allows 2...Nd3+ winning the rook so 2. Ra3 forcing a1=Q, Rxa1, Bxa1, Rxa1 leaving material equality but Black's pawns (and King) are better positioned. I can't find a way for White to stop them from queening.