[Black "DrZ214"] [fen "8/5p2/6k1/3KP3/6Np/8/8/b7 b - - 0 1"] 1... f5 2.Nh2 f4 3.e6 Kf6 4.Kd6 Be5 5.Kd7
Note: The board is from black's perspective. Black to move.
I was black and lost this endgame, starting with 1...f5. I thought it would be good to push the pawn and gain a tempo against his knight. I calculated that if he played en-passant (2.exf6), I would take his pawn with my bishop (2...Bxf6), 3. Nxf6 Kxf6, then his king would get up ahead of my pawn and it would be a draw.
He played 2.Nh2 instead, blocking my edge pawn. Then I played 2...f4 3. e6 Kf6 4. Kd6 Be5+ 5. Kd7, and I could tell I couldn't stop his pawn anymore. My darn bishop did not have enough room to get on a diagonal attacking e7.
Sorry I don't have full game record. We just take photos at the end of the game, and at interesting positions that we feel are pivotal, like this one.
So in hindsight, I could have tried a few other things like Kg5 or even Kf5, or else Bc3 to make some room for it. Even f6 might work? I feel like I should have at least been able to draw. Is there a winning move?
I tried entering this into some on-line tablebases, but it's a 7-piece endgame and they apparently aren't freely available.