Houdini3 itself prefers Qb1 on my Computer.
[pgn]
[Event "3 Minuten/Partie + 1 Sekunden/Zug"]
[Site "Engine Match"]
[Date "2013.02.16"]
[Round "1"]
[White "Komodo64 3 attack2"]
[Black "Houdini 3 Pro x64"]
[Result "1-0"]
[SetUp "1"]
[FEN "r2q1rk1/pp2pp1p/2p3pb/8/2PPPn2/2NQnN2/PP4PP/R3RBK1 w - -"]
1. Qxe3 {0.00/17 4s} Nh3+ {-0.60/17 2s} 2. gxh3 {-0.35/19
16s} Bxe3+ {-0.61/16 1s} 3. Rxe3 {-0.35/20 5s} e5 {-0.55/18
8s (f6)} 4. d5 {-0.02/18 3s} Kg7 {-0.51/17 5s (Db6)} 5. Kh1
{+0.21/16 4s (Kg2)} Qb6 {-0.61/18 3s (f6)} 6. Re2 {+0.20/18
6s} f6 {-0.55/17 7s} 7. Rae1 {+0.20/16 5s (Kg2)} Rfd8
{-0.51/17 26s (Tad8)} 8. Rg2 {+0.20/15 2s (Td2)} Rg8
{-0.47/14 2s (a5)} 9. a3 {+0.36/15 5s (h4)} Qc7 {-0.51/11
7s} 10. Bd3 {+0.36/12 2s (h4)} Qd7 {-0.45/9 3s (Tge8)}
11. Rg3 {+0.52/12 1s (h4)} a6 {-0.41/10 7s (Tac8)} 12. c5
{+1.06/14 4s (Tf1)} Rab8 {-0.23/9 3s (Tgf8)} 13. Nd2
{+1.34/16 3s (Kg2)} cxd5 {-0.10/8 6s (b5)} 14. exd5
{+1.49/14 3s (Sxd5)} Rge8 {+0.04/8 6s (Tbe8)} 15. Nde4
{+1.32/15 4s (Sc4)} Rf8 {+0.33/11 2s (f5)} 16. Bc4
{+1.35/15 10s (Sd6)} Kh6 {+0.22/15 3s (f5)} 17. b4
{+1.83/14 6s (Kg2)} Ra8 {+0.19/10 4s (Kg7)} 18. d6
{+2.51/14 8s (Sd6)} f5 {+0.65/9 3s} 19. Ng5 {+2.35/13 1s}
Rae8 {+1.05/12 15s (e4)} 20. Nd5 {+2.33/13 2s} f4 {+1.49/12
12s (Dc6)} 21. Rg4 {+2.60/13 2s} Qc6 {+2.12/14 5s} 22. Ne4
{+2.75/16 13s (Kg1)} Qa4 {+2.04/14 2s} 23. Nef6 {+2.26/13
4s (Sdf6)} Rxf6 {+1.83/16 12s} 24. Nxf6 {+2.01/13 5s} Rb8
{+2.15/16 3s (Tf8)} 25. Bd5 {+2.80/14 4s} Kg7 {+2.52/15 2s}
26. Ne4 {+2.97/15 5s (Sh5+)} a5 {+2.68/13 3s (Dxa3)}
27. Ng5 {+3.27/13 5s} Re8 {+2.52/11 4s (h6)} 28. Rgg1
{+3.51/13 3s (Lf7)} Qd7 {+3.60/13 2s (axb4)} 29. bxa5
{+4.76/14 1s (Sf3)} f3 {+4.92/14 2s (h6)} 30. Rb1 {+6.37/14
2s (Sxf3)} Rb8 {+7.87/15 7s (b5)} 31. a6 {+7.08/12 1s
(Sxf3)} b5 {+6.89/13 1s} 32. Rbf1 {+8.65/14 2s (Sxf3)} 1-0
[/pgn]