How quickly can you find the shortest mate in this position. White to move.
8/4p3/K2npR2/2P2N2/4k2P/3R1p2/1N2b2B/1Q6 w - - 0 1
V-1
1.Qd1 Bxd3+2.Qxd3#
V-2
1.Qd1 e52.Ng3#
V-3
1.Qd1 Bf12.Qxf3#
V-4
1.Qd1 Nxf52.Rxe6#
V-5
1.Qd1 f22.Qxe2#
V-6
1.Qd1 Nb72.Qa4#
911
8