I certainly do not consider myself one to be in a position to teach anyone chess, but the following position came up in a game and I assumed it was a draw. Turns out one move wins and the other draws. Of the two candidate moves in the position Ke3 and Kg3. The one that moves the king away from the h4 pawn wins. If the king moves to g3 the black king infiltrates to e4 threating to take the c3 pawn and promote the pawn. White must sac the f4 pawn by pushing it to f5. The black king must then take it or lose the race and the white king can enter opposition and a drawn position.
However, if the white plays Ke3 and black plays Kg4. The white king can move to e4 threating to lead the f4 pawn to promotion. Black best try is to take the pawn on h4. The white king then goes back to f3 and the black king is trapped. The f pawn goes onto promote.
Please feel free to share any positions that you found educational.
