Opening Advisor

[AdminX]

Anyone knows how long into the opening does the Opening Advisor stay active? (5, 10, 15, 20 moves or more)

In general the feature seems to guide the play to sound opening positions, but I wonder if it also guides the opening toward positions that Shredder handles better or should I say positions that favor Shredder's style of play. I tested it in Arena against Rybka. I let Rybka use Arena's main book. While I gave Shredder no Opening book at all, just set it to use it's opening advisor. Shredder played the black pieces. Time Control 40/30 40/30 30 rest.

Positon after blacks 7th move. Shredder's 1st long think 59 seconds on Bc5.
[d]r2qk2r/1bpp1ppp/p1n2n2/1pb1p3/4P3/1B1P1N2/PPP2PPP/RNBQ1RK1 w kq - 1 8

Positon after whitess 8th move. Now Rybka was out of Opening book.
[d]r2qk2r/1bpp1ppp/p1n2n2/1pb1p3/4P3/1B1PBN2/PPP2PPP/RN1Q1RK1 b kq - 2 8

Positon after whitess 15th move. I think this was the key position where shredder went wrong. Here Shredder goes for the exchange giving up B+N for R+P.
[d]r4rk1/1bp2ppp/p3q3/1pbpPN2/6nN/1B1P4/PPP2PPP/R2Q1RK1 b - - 6 15

Positon after whitess 20th move. Just five moves have past and it is over for black, white went on to win.
[d]r4rk1/1bp2p1p/p5p1/1p1p1N2/3P3N/1B6/PqP1QKPP/4R3 b - - 0 20

[Event "Computer chess game"]
[Site "TEDWINDT"]
[Date "2007.10.27"]
[Round "?"]
[White "Rybkav2.3.2a"]
[Black "Shredder 11"]
[Result "*"]
[Time "05:41:57"]
[TimeControl "40/1800:40/1800:1800"]
[Termination "terminated"]
[PlyCount "79"]
[WhiteType "program"]
[BlackType "program"]

1. e4 e5 {(e5 Nf3 Nf6 Nc3 Nc6 Bb5 Bb4 a3 Bxc3 dxc3 Nxe4 Bxc6 dxc6 Qxd8+
Kxd8 Nxe5) -0.12/11 4} 2. Nf3 Nc6 {(Nc6) -0.10/11 2} 3. Bb5 a6 {(a6 Bxc6
dxc6 d3 Bg4 0-0 Bc5 Be3 Bxe3 fxe3 Nf6 Nbd2 0-0 h3 Bxf3 Qxf3 b5) -0.23/11 4}
4. Ba4 Nf6 {(Nf6) +0.04/11 6} 5. O-O b5 {(b5 Bb3 d6 Ng5 d5 exd5 Nd4 Nc3 Be7
d3 0-0 Nge4 Bb7 f4 exf4 Bxf4 Nxb3 axb3 Nxd5 Nxd5) -0.17/11 6} 6. Bb3 Bb7
{(Bb7 d4 Bd6 Nc3 exd4 Nxd4 Nxd4 Qxd4 Qe7 Bg5 Be5 Qd2 0-0 f3 h6 Be3 Nh5 Bd5
c6) -0.01/13 3} 7. d3 Bc5 {(Bc5 a4 0-0 axb5 axb5 Rxa8 Bxa8 Nc3 b4 Nd5 Na5
Nxf6+ Qxf6 Ba2 b3 cxb3 d5 Qc2 Qd6 Nxe5 dxe4 Bf4 f5) +0.04/15 59} 8. Be3 Qe7
{(Qe7 Nh4 g6 Bxc5 Qxc5 c3 a5 Qf3 Ke7 a4 b4 Qh3 bxc3 bxc3 Rhb8 Nf3 Ba6 Nfd2
Kf8 Ra2 h5) -0.16/14 53} 9. Nc3 {(Nc3 0-0 Nd5 Nxd5 Bxd5 Rab8 Qd2 h6 Bxc5
Qxc5 c3 a5 d4 exd4) +0.15/14 44} Nd4 {(Nd4 Bxd4 exd4 Ne2 d5 exd5 0-0 Nexd4
Nxd5 Bxd5 Bxd5) -0.32/14 223} 10. Bxd4 {(Bxd4 Bxd4 Nxd4 exd4 Ne2 Qc5 Ng3
0-0 Nf5 h6 Qd2 Ne8) +0.37/12 13} exd4 {(exd4 Ne2 d5 exd5 0-0 Re1 Nxd5 Nf4
Qd6 Bxd5 Bxd5 Nxd5 Qxd5 Re5 Qd6 Qe2 f6 Re6 Qd5) -0.21/16 33} 11. Ne2 {(Ne2
d5 Nexd4 dxe4 Nf5 Qd7 dxe4 Qxd1 Raxd1 Bxe4 Ng3 Bxf3 Rfe1+ Kf8) +0.17/13 30}
d5 {(d5 exd5 0-0 Re1 Nxd5 Nf4 Qd6 Bxd5 Bxd5 Nxd5 Qxd5 Re5 Qd6 Qe2 f6 Re4
Qd5 a3) -0.32/16 50} 12. e5 {(e5 Ng4 Nexd4 0-0 Nf5 Qe6 N3h4 Nh6 Nxh6+ Qxh6
d4 Qxh4 dxc5 Qb4) +0.33/15 33} Ng4 {(Ng4 c3 Nxe5 Nxe5 Qxe5 cxd4 Bxd4 Nxd4
Qxd4 Qe2+ Kd7) -0.05/13 13} 13. Nexd4 {(Nexd4 0-0 Nf5 Qe6 N3h4 Nh6 Nxh6+
Qxh6 Qg4 Qe6 Nf5 g6 Nh6+ Kh8) +0.44/15 28} O-O {(0-0 Ne2 d4 Nexd4 Nxe5 Nf5
Nxf3+ Qxf3 Bxf3 Nxe7+ Bxe7 gxf3 Rfd8 a4 c6 Rfe1 Bc5 axb5 axb5 Rxa8 Rxa8 c3
Bd6 Kg2) -0.21/15 52} 14. Nf5 {(Nf5 Qe6 N3h4 Nxf2 Rxf2 Bxf2+ Kxf2 Qxe5 Qe2
Qxe2+ Kxe2 Rfe8+ Kd2 Re5) +0.31/16 49} Qe6 {(Qe6 N3h4 Nxf2 Rxf2 Bxf2+ Kxf2
Qxe5 Qg4 Rae8 d4 Qf6 Kg1 c6 Qg3 Bc8 Rf1 Re2 Qd6 Qxd6 Nxd6 g6 a3 a5 Nf3)
-0.35/15 61} 15. N3h4 {(N3h4 Nxf2 Rxf2 Bxf2+ Kxf2 Qxe5 Qe2 Qxe2+ Kxe2 Rfe8+
Kd2 Re5 Ng3 Re6) +0.35/16 35} Nxf2 {(Nxf2 Rxf2 Bxf2+ Kxf2 Qxe5 Qg4 Rae8 d4
Qf6 Kg1 c6 c3 Re4 Qg3 Bc8 Rf1 Bxf5 Nxf5 Re2 Nd6 Qg6 Qxg6 hxg6 Rb1) -0.25/15
20} 16. Rxf2 {(Rxf2 Bxf2+ Kxf2 Qxe5 Qe2 Qxe2+ Kxe2 Rfe8+ Kd2 g6 Ne3 d4 Nd5
Re5) +0.30/16 44} Bxf2 {(Bxf2+ Kxf2 Qxe5) -0.25/15 70} 17. Kxf2 {(Kxf2 Qxe5
Qe2 Qxe2+ Kxe2 Rfe8+ Kd2 g6 Ne3 d4 Nd5 Re5 Nf6+ Kg7) +0.30/17 39} Qxe5
{(Qxe5 Qg4 Rae8 Qg5 g6 d4 Qe6 Kg1 Kh8 Nh6 f6 Qg3) -0.27/15 13} 18. Qe2
{(Qe2 Qxe2+ Kxe2 Rfe8+ Kd2 g6 Ne3 d4 Nd5 Re5 Nf6+ Kg7 Rf1 Rd8) +0.34/16 53}
Qxb2 {(Qxb2 Re1 g6 Ne7+ Kg7 Nf3 Rfd8 Qe3 Qf6 Qc5 c6 Kg1 a5 c3 Rd7 Bc2 Qd6
Qe3 c5) -0.10/13 50} 19. Re1 {(Re1 Qf6 Qe7 Qxe7 Nxe7+ Kh8 Bxd5 Bxd5 Nxd5
Rfe8 Rb1 Rac8 Nf3 Kg8) +0.59/13 33} g6 {(g6 d4 Qc3 Ne7+ Kh8 Qg4 c5 Qf4
Qxd4+ Qxd4+ cxd4 Nf3 Rfe8 a4 d3 cxd3 Rad8) -0.20/14 85} 20. d4 {(d4 Qc3 Kg1
gxf5 Nxf5 Kh8 Qe7 Qc6 Bxd5 Qg6 Bxb7 Qxf5 Bxa8) +1.03/13 11}*