1.Rg2
[1.Kd4
Rd8+
2.Kc5
Re8
3.Kd5
Rd8+
4.Kc6
Re8
5.Re1
Kg6
6.Kd7
Ra8
and Black draws as the Rook can check from the long side]
1...Kh4
2.Rg7
Kh5
3.Rg1
Kh6
[3...Kh4
4.e5
Rxe5+
5.Kf4
wins]
4.Kd4
Rd8+
5.Kc5
Re8
6.Kd5
Rd8+
7.Ke6
Re8+
8.Kf6
wins as the mating net, created by the initial manoeuvring which enabled White to lose a move, allows the pawn to advance *