This is a must know ending. Can you describe white's winning method?
8/2p5/8/8/8/8/k6P/4K3 w - - 0 1
1.Kd2 Kb22.Kd3 Kb33.Kd4 Kb44.h4 c65.h5 c5+6.Ke3 c47.h6 c38.h7 c29.Kd2 c1=Q+10.Kxc1It's a winning position for white
Alena, why would black simply waste a tempo with 4. ....c6?
1.Kd2 Kb22.Kd3 Kb33.Kd4 Kb44.h4 c5+5.Ke3 c46.Kd2 Kb37.Kc1It's doesn't matter c6 or c5 for me because I know how to win this position.
It should matter to you, Alena, even if black can't force a draw with either move. Let me ask you this- if you were on the black side of this problem in a game, which move would you play at move 4? Surely you don't resign the position every time you know your opponent already has a winning position.
Of course c5+.