A knight on the rim is dim.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown330"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[ECO "A00"]
[FEN "8/4Bp2/k3p3/1p2P3/p1p1BP1p/P4K1P/1r4P1/8 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... b4 ( { Black can try: } 1... c3 2. Ke3 c2 3. Kd2 c1=Q+ 4. Kxc1 Rf2 5. Bf3 { White wins with a large material advantage. } ) 2. Bxb4 Rxb4 3. axb4 a3 4. Bb1 c3 5. Kg4 a2 6. Bxa2 c2 7. Kxh4 c1=Q 8. g3 Qc2 9. Bxe6 fxe6 10. g4 Qg6 11. Kg3 Qe4 12. g5 Kb5 13. h4 Kxb4 14. h5 Kc4 15. g6 Kd3 16. g7 Qh7 17. h6 Ke3 18. f5 exf5 19. e6 Qg6+ 20. Kh3 Kf3 21. Kh4 Qg4# 0-1