Could black have won this endgame?

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Avatar of checkmateibeatu

I just played a game on Live Chess just now where a blundered the exchange and got to an endgame.  Could black have won the final position (which he lost on time)?

Avatar of honorflamingo

I think black could have ended the game even earlier with 24...Rb1.

Avatar of checkmateibeatu
But after Ke1, what could he follow up with?
Avatar of Svekke

On move 30 black wins clearly after 30...f6 and the knight is lost. On move 32 black just needed to take the knight...

Avatar of Frankdawg

The final position looks a bit tougher to crack, but on moves 30 or 32 black could have won the knight.