Castle early and often.
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[Event "rated untimed match"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Unknown"] [Black "Unknown78"] [Result "1-0"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "B7/p3n3/5k2/7p/1P1R2p1/P3PrK1/8/8 w - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1. Bxf3 Nf5+ 2. Kf2 Nxd4 3. exd4 gxf3 4. a4 { Or b5.|There is no time to waste pushing these pawns. } ( { White can try: } 4. Kxf3 Ke6 5. b5 Kd5 6. a4 Kxd4 7. a5 Kc5 8. b6 axb6 9. axb6 Kxb6 { Draw. } ) 4... Ke6 5. b5 Kd5 6. a5 Kxd4 7. b6 axb6 8. axb6 h4 9. Kxf3 h3 10. b7 h2 11. Kg2 h1=Q+ 12. Kxh1 Kc5 13. b8=Q { White wins with a large material advantage. } 1-0