Leonid Kubbel- Aleksei Troitzky

Diag.1 Leonid Kubbel- Aleksei Troitzky
2.p Ceskoslovensky Sach#34, 1936- Ganan
wKb1,Qd1,Na8/bKa3,Qa5,Pa7,b4,c5

Solución:
1.Dc1+ Ra4! [1…Rb3 2.Dc2+ Ra3 3.Da2#] 2.Dc4! Dd8! [2…a6 3.Rb2 Dd8 4.Dxa6+ Da5 5.Cb6#] 3.Da6+ Da5 [3…Rb3 4.Da2+ Rc3 5.Dc2+ Rd4 6.Dd2+] 4.Cb6+! axb6 5.Dc4! Da7 [5…b5 6.Da2#; 5…Ra3 6.Da2#; 5…Db5 6.Da2#] 6.Da2+ Rb5 7.Dxa7 +-