Playing iffy moves can be fatal especially in the opening but nothing ventured nothing gained
Luckily your opponent does not have his engine next to him with OTB chess 
DD (187ECF) - Me [B40]
League Game, 27.11.2008
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Qh4?!
[fen]rnb1kbnr/pp1p1ppp/4p3/8/3NP2q/8/PPP2PPP/RNBQKB1R[/fen]
5.Bd3 Bc5 6.c3 (g3 has been played before)Nc6 7.Be3 Nf6 8.Nd2 Ng4 9.Qe2 Nxe3 10.Qxe3 e5 11.N4f3 Qe7 12.Qe2 d6 13.0-0 0-0 14.Rad1 Bg4 15.Nc4 Nd8 16.b4 Bb6 17.a4 Ne6 18.Bb1 Nf4 19.Qd2 Bxf3 0-1 ...
[fen]r4rk1/pp2qppp/1b1p4/4p3/PPN1Pn2/2P2b2/3Q1PPP/1B1R1RK1[/fen]
Bxf3 wins on the spot, Don missed that Qg5+ was coming and mate on g2 when he played 18.Bb1?
FIDE conversion: FIDE = New ECF x 8 + 650 .... 187 x 8 + 650 = 2146elo
Regards