Valery Shanshin (Russia)
 
#3 11+15

1.Bc5? bxc5! [2.Se3??]

1.Re4? fxe4! [2.Sb4??]

1.Rb4! threat 2.Rxb5+ Ke4 3.Qxf5#

(1...Rxc2 2.Rd4+ Kc5 3.Qc6#)

1...Sdc3 2.Bc5 threat 3.Qxf5# [A]

2...Kxc5/Be6 3.Qc6# [B]

2...bxc5 3.Se3# [X]

1...Sac3 2.Re4 threat 3.Qc6# [B]

2...Kxe4 3.Qxf5# [A]

2...Sxe4/fxe4 3.Sb4# [Y]

1...Sxe3 2.Sxe3+ [X] Kc5 3.Rxb5#

1...Sxb4 2.Sxb4+ [Y] Ke4 3.Qxf5#


Clearance sacrifices in logical form. Interchange of threat and mate (pseudo-le Grand). Changed functions of white moves Se3 and Sb4.