Estudio de Boris Sidorov (1987). Blancas juegan y hacen tablas.

- 1er premio All-Russian Ty -

1.h3+! [ 1.bxa8=D? Tb1+ 2.Rxg2 h3#; 1.b8=D? Dxb8 2.h3+ Rf4] 1...Rxh3 2.b8=D! [ 2.bxa8=D? Tb1+] 2...Dxb8 3.Ac8+ Tg4 4.Ab7! Da8! 5.Ac8 [ 5.Axa8? Tc4] 5...Db8 [ 5...Dxc8; 5...Df3 6.Axg4+ Rxg4] 6.Ab7! Te4 [ 6...Dxb7] 7.Ac8+ Tg4 8.Ab7 Da8 9.Ac8 ½–½