EG No. 10642 Reprinted with permission 
V.Kovalenko and Yu. Bazlov 6th Place XI Russian Federation
Team Championship 1992 
Win

White: Kc4, Rb7, Nd4, Ba7; pawns - b2, d5, e7 
Black: Ka5, Qe4, Bf5, Bg1; pawns - a6, h2

1.Rb3/i Qxd5+/ii 2.Kxd5 h1Q+ 3.Kc4/iii Be6+ 4.Nxe6 Qc6+
5.Nc5 Bxc5 6.e8Q Qxe8 7.Bb6+, and Bxb6 8.Ra3+ Qa4+ 9.b4
mate, or Ka4 8.Ra3+ Bxa3 9.b3 mate. 

i) 1.e8Q? Qd3+ 2.Kc5 Qxd4+ 3.Kd6 Qf4+ 4.Ke7 Qe5+. and Black
might even win. 
ii) Qd3+ 2.Rxd3 Bxd3+ 3.Kxd3 h1Q 4.e8Q, and Bxd4 5.Qd8+
Kb4 6.Qd6+ Ka4 7.Qc6+ Ka5 8.Qc7+, or if Qh3+ 5.Kc4 Qfl+
6.Qe2+ Qxe2 7.Nxe2 Bxa7 8.Nd4 Bb6 9. Nb3+ Ka4 10.Nc5+ Ka5
11.Nb7+ Ka4 12.d6 a5 13.Nc5+ wins. 
iii) 3.Kd6? Qh2+ 4.Kd5 Qg2+ 5.Kc4 Qfl + draws. 
"A curious finale with a concomitant pure mate. The sacrificial
tune rings so loud that it deafens our sensibilities to the study's
other beauties. The black king's passivity stood in the way of a
higher ranking."