Rybka4.1 analysis

baseline run

[+0.37] d=33 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.Nf3 g6* 6.exd6 cxd6 7.Be2 Bg7 8.h3 0-0 9.Nc3 Nc6 10.0-0 Bf5 11.Re1 Re8 12.g4 Bc8 13.a4 Nd7 14.Bg5

Section I: 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.Nf3 g6* 6.exd6 cxd6 7.Be2 Bg7 8.h3 0-0 9.Nc3 Nc6 10.0-0 Bf5

(4.Nf3 g6 5.c4 Nb6 6.exd6 cxd6 appears to transpose: [+0.34] d=32 5.c4 Nb6 6.exd6 cxd6 7.Nc3 Bg7 8.h3 O-O 9.Be2 Bf5 10.O-O Nc6 11.Re1 Re8 12.g4 Bc8 13.a4 Nd7 14.Bg5 a5 15.Qd2 b6 16.Nb5 Nf6 17.Bf1 Nb4)

[+0.39] d=33 11.Bf4 Re8 12.Rc1 e5 13.Bg5 Qd7 14.Be3 d5 15.cxd5 Nxd5 16.Nxd5 exd4 17.Nxd4 Bxd4 18.Bxd4 Qxd5 19.Bc3 Qxd1 20.Bxd1 a6 21.a3 Rad8 22.f3 h6 23.g4 Be6 24.Re1 Nd4 25.Kf2 Rd5

*the following need further work:

(a) +0.35/28 5...dxe5 6.Nxe5 g6** 7.Nc3 Bg7 8.Be3 Be6 9.Qb3 a5 10.Ne4 a4

(b) +0.45/28 5...Bg4 6.exd6 exd6 7.h3 Bh5 8.Nc3 Be7 9.Be2 0-0 10.0-0 Re8

(c) +0.54/28 5...Bf5 6.Nc3 e6 7.exd6 cxd6 8.Bd3 Bxd3 9.Qxd3 Be7 10.0-0 0-0 11.b3 Nc6 12.Rb1 d5

(d) +0.57/26 5...Nc6 6.Nc3 dxe5 7.d5 Nb4 8.a3 Na6 9.Nxe5 g6 10.Be3 Bg7 11.f4 0-0

**+0.36/30 6...g6 7.Nc3 Bg7 8.Be3 Be6 9.Qb3 a5 10.a4 0-0 11.Nf3 Na6 12.Be2 Nc8

Section II: 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5

[+0.32] d=31 4...dxe5 5.Nxe5 c6 6.Nf3 Bg4 7.c4 Nb6 8.Nbd2 e6 9.Be2 c5 10.h3 Bxf3 11.Nxf3 Nc6 12.Be3 cxd4 13.Nxd4 Bb4+ 14.Kf1 Nxd4 15.Qxd4 Qxd4

Section III: 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4

[+0.46] d=29 5.exd6 exd6 6.Be2 Be7 7.c4 Nb6 8.h3 Bh5 9.O-O O-O 10.Nc3 Nc6 11.b3 Bf6 12.Be3 Re8 13.Qd2 Bg6 14.d5 Nb4

Section IV: 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Nb6

[+0.40] d=28 4...Nb6 5.a4 a5 6.Bd3 g6 7.exd6 cxd6 8.O-O Bg7 9.c3 O-O 10.Re1 Nc6 11.Na3 Bg4 12.Nb5 e5 13.dxe5 dxe5 14.h3 Be6