Problema de Aleksej Kopnin

Mate en 2 - (1981)

1.Tb7 Rxd6 [1...Axb7 2.Cxb7#; 1...Ae3 2.De5#; 1...Axd6 2.Tb5#; 1...Ch1 2.Ce4#; 1...Tc7 2.Db6#; 1...Txd6 2.Dc3#; 1...Cb4 2.Dxb4#] 2.Dd4++ 1–0