What does Rybka3 say about this opening?
March 18, 2009, top 5 lines 24-ply
1. (-0.34): 2...exf4 3.Nf3 d6 4.Bc4 h6 5.h4 Nf6 6.Nc3 Nbd7 7.d4 Nh5 8.Qd3 Nb6 9.Bb3 c6 10.Bd2 a5 11.a3
2. (0.02): 2...d6 3.d3 Nc6 4.Nf3 g6 5.Be2 Bg7 6.fxe5 dxe5 7.0-0 Nf6 8.c3 0-0 9.b4 a6 10.Be3 Ng4 11.Bg5
3. (0.03): 2...d5 3.exd5 exf4 4.Nf3 Nf6 5.c4 c6 6.d4 cxd5 7.c5 b6 8.b4 Be7 9.Bb5+ Bd7 10.Bxd7+ Qxd7 11.0-0
a5 12.Ne5 Qc8 13.Qa4+ Nbd7 14.Nxd7 Nxd7 15.c6 Nf6 16.b5 g5 17.Re1
4. (0.06): 2...g6 3.Nf3 exf4 4.Nc3 Nf6 5.Bc4 Nh5 6.0-0 Bg7 7.d4 d6 8.Nd5 Be6 9.Qe2 Bxd5 10.exd5+ Qe7
5. (0.09): 2...h6 3.Ne2 d6 4.d4 Nf6 5.Nbc3 exd4 6.Nxd4 Be7 7.Bc4 0-0 8.Be3
6. (0.11): 2...Bc5 3.Nf3 d6 4.c3 Nf6 5.fxe5 dxe5 6.Nxe5 Qe7 7.d4 Bd6 8.Nf3 Qxe4+ 9.Be2 0-0 10.0-0 Nc6 11.Bd3
Qg4 12.Nbd2 Be6 13.Nc4 Bxc4
7. (0.11): 2...Nc6 3.Nf3 exf4 4.d4 Nf6 5.e5 Ng4 6.Bb5 d6 7.h3 Ne3 8.Bxe3 fxe3 9.Qd3 a6 10.Bxc6+ bxc6 11.0-0 Be7
12.Nc3 0-0 13.Rae1
8. (0.12): 2...c6 3.Nf3 exf4 4.d4 Nf6 5.Nc3 Bb4 6.Bd3 d5 7.exd5 Qe7+ 8.Qe2 Nxd5 9.Qxe7+ Kxe7 10.Bd2 Nxc3 11.bxc3
Bd6 12.Kf2 Rd8 13.Rae1+ Kf8 14.g3 Nd7 15.gxf4 Nf6 16.f5 h6 17.Rhg1 Nd5
After 2...exf4 3.Nf3 d6: Feb 05, 2010
4.Bc4 h6 5.h4 Nf6 6.Nc3 Nbd7 7.d4 Nh5 8.Qd3 c6 9.Ne2 a5 10.a4 Qf6 11.Bd2 Be7 12.0-0-0 Nb6 13.Bb3 0-0 14.Kb1 Bg4 15.e5
Qf5 16.Nxf4 Nxf4
� (-0.26) Depth: 30 1139:11:47 247464062kN Yes, that is 1139
hours. 4.Qe2 was evaluated next, then 4.Nc3, and then 4.d4.
Jan 06, 2010
[-0.32] d=29 4.Bc4 h6 5.h4 Nf6 6.Nc3 Nc6 7.d4 Nh5 368:14:32 44299950kN This position
has occurred only 4 times in master level play.
a) Rybka discovers the interesting positions after 8.d5 Nb8!? as workable for black,
[-0.52] d=24 9.0-0 Bg4 10.Qd4 Be7 11.Bxf4 Bxf3 12.Rxf3 Nxf4 13.Rxf4 Bf6.
b) Play might otherwise continue: [-0.41] d=23 8.Nd5 Ng3 9.Rh2 Ne7 10.Nxf4 Nxe4
11.Qe2 Bf5 12.g4 Bh7 13.Be3 d5 14.Bb3 c6 15.0-0-0 a5 16.a3 a4 17.Ba2 Ng6 18.Nxg6 Bxg6 19.h5 Bh7 20.g5
Surprisingly 4.Qe2 is the next move considered at 29-ply, and 4.Nc3 after that...
[-0.31] d=28 4.Bc4 h6 5.h4 Nf6 6.Nc3 Nbd7 7.d4 Nh5 8.Qd3 c6 9.Ne2 a5 10.a4 Qf6 11.Bd2 Be7 12.0-0-0 Nb6 13.Bb3
0-0 14.Kb1 [here we have 0.21/20 14...Bg4 15.e5 Qf5 16.Qxf5 Bxf5 17.Nxf4 Nxf4 18.Bxf4 d5 19.h5] 14...Re8 15.Rhf1 142:17:19
3045852kN
After 2...exf4 3.Nf3 d6 4.Nc3: Dec 21, 2009
[-0.55] d=24 4...g5 5.d4 g4 6.Bxf4 gxf3 7.Qxf3 Nc6 8.Bb5 Qh4+ 9.Bg3 Qf6 10.Qd3 a6 11.Nd5 Qd8 12.Ba4 h5 13.0-0
h4 14.Be1 b5 15.Bb3 h3 16.Nb4 Nxb4 17.Bxf7+ Kd7 18.Bxb4 hxg2 19.Rf2 Qh4
[-0.15] d=24 4...h6 5.d4 g5 6.g3 a6 7.a3 Bg7 8.Qd3 g4 9.Nh4 f3 10.Be3 Nc6 11.0-0-0 Nge7 12.Kb1 b5 13.Nd5
Be6 14.Nf4
