r3k3/1ppNp1K1/8/p7/rp1R4/4p3/8/Q1R5 w q - 0 1

It took me 45 minutes to solve it.Awful!

V-1

1.Rc6! e2

2.Nf6+ exf6

3.Re6#

V-2

1.Rc6 0-0-0

2.Rxc7 Kxc7

3.Qc1#

V-3

1.Rc6 bxc6

2.Qf1 0-0-0

3.Qa6#

V-4

1.Rc6 bxc6

2.Qf1 any move except 0-0-0

3.Qf8#