Good Test Move....?

[beachknight]

1575: 2r1k2r/1p2np2/q3p1p1/b2pPnN1/3
2r1k2r/1p2np2/q3p1p1/b2pPnN1/3p1P2/PR3N2/2P3QP/R1B4K b k - 0 1

Analysis by Rybka 3:

1...Qe2 2.Qxe2 Ng3+ 3.Kg2 Nxe2 4.Rxb7 Rxc2 5.Bd2 Nxf4+ 6.Kg1 Bxd2 7.Rb8+ Nc8 8.Nxd2 Rh4 9.Ngf3
-+ (-2.89) Depth: 9 00:00:00 70kN
1...Rxc2
-+ (-3.20 !) Depth: 9 00:00:00 77kN
1...Rxc2
-+ (-3.40 !) Depth: 9 00:00:00 82kN
1...Rxc2
-+ (-3.80 !) Depth: 9 00:00:00 97kN
1...Rxc2 2.Qg1 b6 3.Rab1
-+ (-3.97) Depth: 9 00:00:00 143kN
1...Rxc2
-+ (-4.17 !) Depth: 10 00:00:01 210kN
1...Rxc2
-+ (-4.37 !) Depth: 10 00:00:01 266kN
1...Rxc2 2.Qg1 b6[] 3.a4 Qc4[] 4.Rab1 Nc6 5.h3 d3 6.Be3 d4
-+ (-4.37) Depth: 10 00:00:01 311kN
1...Rxc2
-+ (-4.57 !) Depth: 11 00:00:02 444kN
1...Rxc2
-+ (-4.77 !) Depth: 11 00:00:02 545kN
1...Rxc2 2.Qg1 b6[] 3.Rb2 d3[] 4.Rxc2 dxc2 5.Bb2 Qd3 6.Rc1 Ne3
-+ (-4.77) Depth: 11 00:00:04 904kN
1...Rxc2 2.Qg1 b6[] 3.Rb2 d3[] 4.Rxc2 dxc2 5.Bb2 Qd3 6.Rc1 Ne3
-+ (-4.77) Depth: 12 00:00:05 913kN
1...Rxc2
-+ (-4.97 !) Depth: 13 00:00:06 1163kN

(, chessengines20 04.08.2009)

[beachknight]

1575: 2r1k2r/1p2np2/q3p1p1/b2pPnN1/3
2r1k2r/1p2np2/q3p1p1/b2pPnN1/3p1P2/PR3N2/2P3QP/R1B4K b k - 0 1

Analysis by Deep Shredder 11 x64:

1...Qe2 2.Qxe2 Ng3+ 3.Kg2 Nxe2 4.Rxb7 Rxc2 5.Rb8+ Nc8 6.Bd2 Nxf4+ 7.Kg1 Bxd2 8.Nxd2 d3 9.Ngf3 Rh5
-+ (-4.26) Depth: 12/33 00:00:01 3137kN
1...Qe2 2.Qxe2
-+ (-4.02) Depth: 13/36 00:00:01 4803kN
1...Rxc2 2.Qg1 Qe2 3.Rxb7 Rh3 4.Bd2 Bxd2 5.Rb8+ Nc8 6.Rxc8+ Rxc8 7.Nxh3 Qxf3+ 8.Qg2 Qxg2+ 9.Kxg2 d3 10.a4 Bc1 11.Nf2 Ne3+
-+ (-7.14) Depth: 13/43 00:00:08 23536kN
1...Rxc2 2.Qg1 Qe2 3.Rxb7 Rh3 4.Rb8+ Bd8 5.Bd2 Rxf3 6.Re1 Qf2 7.Nh7 Nc8 8.Rc1 Qxd2 9.Rxc8 Qxc1 10.Nf6+ Ke7 11.Qxc1 Rxc1+
-+ (-7.47) Depth: 14/39 00:00:10 29091kN
1...Rxc2 2.Qg1 Qe2 3.Rxb7 Rh3 4.Rb8+ Bd8 5.Bd2 Rxf3 6.Re1 Qf2 7.Nh7 Nc8 8.Rc1 Qxd2 9.Rxc8 Qxc1 10.Nf6+ Ke7 11.Qxc1 Rxc1+
-+ (-7.47) Depth: 15/40 00:00:12 34131kN

(, chessengines20 04.08.2009)

[beachknight]

second run with df11:

1575: 2r1k2r/1p2np2/q3p1p1/b2pPnN1/3
2r1k2r/1p2np2/q3p1p1/b2pPnN1/3p1P2/PR3N2/2P3QP/R1B4K b k - 0 1

Analysis by Deep Fritz 11:

1...Rc4 2.Qf2 Qc6 3.Ra2 b6 4.a4 0-0 5.Qg2 Kg7 6.Qf2 Ra8 7.Nh4 Nxh4 8.Qxh4 Rh8 9.Qf2 Nf5 10.Ba3
-+ (-2.51) Depth: 16/34 00:00:06 31120kN
1...b6 2.Bb2 Ne3 3.Qg1 Rxc2 4.Bxd4 N3f5 5.Bxb6 Qc4 6.Rbb1 Qxf4 7.Bf2 Nc6 8.Rc1 Rc3 9.Rxc3 Bxc3 10.Rc1
-+ (-2.68) Depth: 16/34 00:00:07 36551kN
1...b6 2.Bb2 Ne3 3.Qg1 Rxc2 4.Bxd4 N3f5 5.Bxb6 Qc4 6.Rbb1 Qxf4 7.Bf2 Nc6 8.Rc1 Rxh2+ 9.Qxh2 Rxc1+ 10.Rxc1 Qxc1+ 11.Kg2
-+ (-2.66) Depth: 17/33 00:00:09 47447kN
1...b6 2.Bb2 Ne3 3.Qg1 Rxc2 4.Bxd4 N3f5 5.Rab1 Qc4 6.h3 Qa4 7.R3b2 Nxd4 8.Qxd4 Rc4 9.Qd1
-+ (-2.45) Depth: 18/36 00:00:13 73448kN
1...Rc4 2.Qf2 Ne3 3.Bxe3 dxe3 4.Qxe3 Rxc2 5.Qd3 Qxd3 6.Rxd3 Nf5 7.Rb3 Ng3+ 8.Kg1 Ne2+ 9.Kf1 b6 10.Rab1 Nxf4
-+ (-2.65) Depth: 18/41 00:00:29 187mN
1...Rc4 2.Rab1 Qc6 3.R1b2 b6 4.Qf2 Rh5 5.Ra2 Kf8 6.Rd3 Bc3 7.Ng1 Kg8 8.Ne2
-+ (-2.61) Depth: 19/39 00:00:46 307mN
1...Rc4 2.Rab1 Qc6 3.R1b2 b6 4.Qf2 Rh5 5.Ra2 Kf8 6.Rd3 Bc3 7.Bb2 Kg8 8.Bxc3 dxc3
-+ (-2.66) Depth: 20/41 00:01:07 464mN
1...Rc4 2.Rab1 Qc6 3.R1b2 b6 4.Qf2 Rh5 5.h3 Qc7 6.Ra2 Kf8 7.a4 Kg8
-+ (-2.59) Depth: 21/41 00:01:54 803mN
1...Rxc2 2.Qg1 Qe2 3.Rxb7 Nc6 4.Rb2 Rxb2 5.Bxb2 Qxb2 6.Rf1 d3 7.Rf2 Qxa3
-+ (-7.84) Depth: 21/47 00:05:35 2396mN

(, chessengines20 04.08.2009)

[BubbaTough]

LearningLemming 0.40 gets this at depth 16 in 24 seconds on 1 thread 2.6 core 2 duo.

-Sam