At first I got a lot of mate in 4.Then I gueesed how to get mate in 3.

V-1

1.Qc5! dxc5
2.Ne6 dxe6
3.Rd8#

V-2

1.Qc5 dxc5
2.Ne6 f3
3.Re5#

V-3

1.Qc5 Rxa8
2.Re5+ dxe5
3.Qxe5#

V-4

1.Qc5 f3
2.Rf5+ d5
3.Qxd5#

Yancey, I'm looking forward to your endgame puzzles.