It’s Your Move: daily chess puzzle #310

Black to play and win

Ljubojevic v Browne, Amsterdam 1972

Solution

If you solved this one, bravo! It is, as I have written before, profound.

I solved it- not because I could actually do it, but because I knew it, having blogged about the ending at length before.  It still takes me a good while to fathom why 1…Kd5!! wins and its difference from 1…f5? which Browne played with the players agreeing a draw after 2 Kb4 f4 3 Kc4.