J. Hasek
"Ceskoslovensky Sach" 1929

White: Kb4; pawns - a3, e2
Black: Ka2; Rc2

White to move and draw

1 a4 Rb2+ 2 Kc5 Ka3 3 e4!!/i and draws

i/ 3 a5? Ka4 4 a6 Ka5 5 a7 Rc2+ 6 Kd6 Rc8 and wins