Ernest Pogosyants
3rd prize, Revista de Sah  1968-70

White: Kf1, Nd6, Bb7; pawn - g2
Black: Kd3, Nh1, Bb3, Bh6; pawn - g3
Draw

The pawns on g2 and g3 guarantee White the draw if Black is left with a
bishop (whether on light or dark squares). But a knight, even when on h1,
wins easily. 1.Kg1? Nf2 2.Ba6+ Kd2 wins.

1.Ba6+ Ke3!/i 2.Nf5+!/ii 2...Kf4 3.Nxh6 Kg5 4.Ng4!!/iii 4...Kxg4
5.Bc4!/iv 5...Ba4 6.Bb5 Bc2 7.Bd3 Bd1 8.Be2+! Bxe2+ 9.Kg1!! Nf2
stalemate.

i) Let's look at alternatives: 1...Kc2 2.Nf5 (2.Ne4? Be3) 2...Bf4 3.Nd4+
Kb2 4.Nxb3 Kxb3 5.Kg1 draws; 1...Kc3 2.Ne4+ Kd4 3.Kg1 Kxe4 4.Kxh1
draws, as White will follow up with either 5.Bb7, or 5.Kg1 and 6.Kf1;
finally there is 1...Kd2 2.Ne4+ Ke3 3.Kg1. 
ii) Not 2.Kg1? Nf2 3.Nf5+ Kf4 3.Nxh6 Kg5.
iii)And not 4.Kg1? Nf2 5.Bc4 Bxc4 6.Nf5 Ne4 and wins. 
iv) But if 5.Kg1? Nf2 6.Bc4 Bc2 wins.