The hardest game to win is a won game.
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[Event "rated untimed match"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Unknown"] [Black "Unknown431"] [Result "0-1"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "4k3/8/1p3R2/p1b3K1/P7/8/8/8 b - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1... Be7 2. Kf5 Bxf6 3. Kxf6 b5 4. Ke5 b4 5. Kd4 Kd7 6. Kc4 Kc6 7. Kb3 Kd5 8. Kb2 Kc4 9. Kc2 b3+ 10. Kb2 Kb4 11. Kb1 Kxa4 12. Kb2 Kb4 13. Ka1 Kc3 14. Kb1 b2 15. Ka2 Kc2 16. Ka3 b1=Q 17. Ka4 Qb4# 0-1