A knight on the rim is dim.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown232"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[ECO "A00"]
[FEN "8/4k1p1/6Kp/p3P2P/1pP3P1/8/B7/3n4 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... a4 { You must promote a pawn quickly or white will. } ( { Black can try: } 1... Nc3 2. c5 Nxa2 3. c6 b3 4. c7 Kd7 5. e6+ Kxc7 6. e7 b2 7. e8=Q b1=Q+ 8. Kxg7 Nb4 9. Qe5+ Kb6 { With a likely draw. } ) 2. c5 b3 3. c6 bxa2 4. c7 Kd7 5. e6+ Kxc7 6. e7 a1=Q 7. e8=Q Qf6+ 8. Kh7 Nc3 { Black wins with a large
material advantage. } 0-1