how come the pawn didn't eat the rook? (0-1)  when the rook go to 4. RG5?

and for the other one. why not go for Kxc7? i really think that white king should take the pawn?

I reckon 1...c5! 2. bxc5 Rc6 would be best. W can still almost certainly win with 2. b5! though

for black just put the rook on c4 and white will have a vary hard time wining if it can.

and now white has a pass pawn which can really hurt black as long as the rook stays on that pawn.  there are so many things that could happen in this puzzle that it's really not a puzzle.

Same. I don't see why ...d3 isn't met by Ra6

I think this puzzle fails

wondering about it... 

if white alternate moves:

Whites move in variation:

what if after rook to d3 white takes the a6 pawn with his rook, i think it's game over