No one will regret the time dedicated to chess, as it will help in any profession.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "White player"]
[Black "Black player"]
[Result "*"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "8/8/5nk1/8/5PPP/5K2/8/8 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ A Knight In Defense Part 3.|White to move and win.|Three pawns can
usually overcome a king and knight.|Note that since white cannot lose, the
question becomes can white win? } 1. f5+ { White pushes his pawns whenever
possible. } 1... Kg7 { Black keeps his king where it has the best chance of
blockading white's advance. } 2. g5 Nd5 3. h5 { The pawns advance with
confidence. } 3... Nc3 4. Kf4 Ne2+ 5. Ke5 Ng3 6. f6+ Kh7 7. g6+ Kh6 8. g7 Kh7 9. h6 Nh5 10. f7 Nxg7 11. f8=Q { White wins with a large material advantage. } 11... Kxh6 12. Kf6 Kh5 13. Qxg7 Kh4 14. Qg2 Kh5 15. Qg5# *