V. Platov "Shakhmaty" 1922

Diagram: 
White: Ke4, Rg7; pawn - c7 
Black: Kh5, Rc6; pawn - a4 
Draw (Black to draw; White to move)

1 Kd5/i Rc2/ii 2 Kd6 a3 3 Rg2/iii Rxg2/iv 4 c8Q Rd2+/v 5 Ke5 a2
draws/vi.

i) 1 Rh7+ can be met by 1... Kg6, and if White continues with 2
Re7, then 2...a3 (2...Kf6? 3 Kd5 Rc1 4 Re6+ Kf7 5 Rc6 wins) 3
Kd5 Rc1 4 Re6+ Kf7 5 Rc6 Rxc6 6 Kxc6 a2 draws. 
ii) Only this move leads to a draw. If 1...Rc3?, then 2 Kd6 a3 3
Rg3 Rxg3 4 c8Q wins. If 1...Rc1?, then 2 Kd6 a3 3 Rgl Rc2 (3 ...
Rxg1 4 c8Q wins) 4 Rdl a2 5 Kd7 Rd2+ 6 Rxd2 a1Q 7 Rd5+ (7
c8Q? Qg7+ 8 Ke8 Qh8+ and White must submit to perpetual check
or lose the rook) 7... Kg6 8 c8Q wins. 
iii) 3 Rgl Rd2+ 4 Ke7 Rc2 5 Kd8 Rd2+ 6 Kc8 a2 7 Rc1 Kg6 8 Kb7
Rb2+ 9 Ka7 Rbl draws. 
iv) 3...Rc1? 4 Rd2 wins. 
v) 4... a27 5 Qh3+ K- 6 Qxg2+ wins. 
vi) The composer noted that this position was unknown to
endgame theory before the publication of the present study. If
Black plays correctly, White will find it impossible either to create
a mating net or to win the rook with check. For example, 6 Qh8+
Kg4 7 Ke4 Re2+ 8 Kd3 Rh2 9 Qe5 Rg2 10 Ke3 Rc2 11 Qf6 Rg2
12 Qg6+ Kh4 13 Qf6+ Kg4 14 Qf1 Rc2 15 Ke4 Kg5 (15... Rc4+?
16 Kd3 wins) 16 Ke5 Re2+ etc.