One thing that you can be certain of, is that White can not lose from here, except on time! White can win against any defense but may give away a draw if he is not accurate. The key to such positions is 'opposition'. Just one single move could save or destroy the game. It is very important to study 'how?'

1.Kd2 [1.Kb2 also wins; 1.c4 leads to draw! 1...Kc7 2.Kc2 Kd6 3.Kc3 Kc5 4.Kd3 Kc6 5.Kd4 Kd6 6.c5+ Kc6 7.Kc4 Kc7 8.Kd5 Kd7 9.c6+ Kc7 10.Kc5 Kc8 11.Kd6 Kd8 12.c7+ Kc8 13.Kc6 Stalemate and draw!; 1.c3 leads to draw! 1...Kc7 2.Kc2 Kd6 3.Kd3 Kd5 4.c4+ Kc5 5.Kc3 Kc6 6.Kd4 Kd6 7.c5+ Kc6 8.Kc4 Kc7 9.Kd5 Kd7 10.c6+ Kc7 11.Kc5 Kc8 12.Kd6 Kd8 13.c7+ Kc8 14.Kc6 Stalemate and draw! (14.Kd5 Kxc7 Draw due to insufficient material!) ]

1...Kc7 Even from here any pawn move leads to draw!

2.Kd3 [2.c4 Leads to draw! 2...Kd6 3.Kd3 Kc5 4.Kc3 Kc6 5.Kd4 Kd6 6.c5+ Kc6 7.Kc4 Kc7 8.Kd5 Kd7 9.c6+ Kc7 10.Kc5 Kc8 11.Kd6 Kd8 12.c7+ draw to follow!; 2.c3 Leads to draw! 2...Kd6 3.c4 Ke6 4.Kc3 Kd6 5.Kd4 Kc6 6.c5 Kc7 7.Kd5 Kd7 8.c6+ Kc7 9.Kc5 Kc8 10.Kd6 Kd8 11.c7+ draw to follow!]

2...Kd6 Even from here any pawn move leads to draw!

3.Kd4 direct opposition with a single square in between forcing the opponent's King to give way. Opposition can be gained from a distance with odd number of squares between the Kings.

3...Kc6 4.Kc4 Kd6 must give way

5.Kb5 entering inside

5...Kc7 6.Kc5 opposition again

6...Kd7 7.c3 [7.c4 leads to draw! 7...Kc7 8.Kd5 Kd7 9.c5 Kc7 10.c6 Kc8 11.Kd6 Kd8 12.c7+ Kc8 13.Kc6 Stalemate and draw! Other King moves could not have supported the pawn and losing the pawn will result in draw due to insufficient material.]

7...Kc7 8.c4 Moving the pawn in two instalments! Why? [8.Kd4 leads to draw! 8...Kd6 9.Kc4 Kc6 Now it is the Black king to win opposition 10.Kd4 Kd6 11.c4 Kc6 12.c5 Kc7 13.Kd5 Kd7 14.c6+ Kc7 15.Kc5 Kc8 16.Kd6 Kd8 17.c7+ draw to follow]

8...Kd7 9.Kb6 gaining entry to control promoting square.

9...Kc8 10.Kc6 Kd8 11.Kd6 Kc8 controlling the promoting square.

12.c5 [12.Kc5 leads to draw! 12...Kc7 gaining opposition! 13.Kd5 Kd7 14.c5 Kc7 15.c6 Kc8 16.Kd6 Kd8 17.c7+ Kc8 draw next move either due to stalemate or insufficient material. 18.Kc6 draw! (18.Ke7 Kxc7 draw!) ; ]

12...Kd8 13.c6 Kc8 14.c7 Now the Black King must get out of there!

14...Kb7 15.Kd7 Controlling the promoting square!

15...Kb6 16.c8Q And wins! *