Author: Dann Corbit
Date: 10:28:24 11/14/02
Go up one level in this thread
On November 13, 2002 at 14:16:31, Dann Corbit wrote: Chess Tiger 14 analysis added: >Here is the output of Ruffian on some test problems I find interesting... >I have added [D] to highlight the positions. >A few comments are interspersed. > >E:\programme\winboard\ruffian>ruffian -h 300M -T qthard.epd -t 3600 -p 4 >Hash size 314572800 >Ruffian 1.0.1 >feature done=0 >Loading configuration: ruffian.cfg >Warning: EGTB_HASH_SIZE changed, default=1048576, newvalue=8388608 >Logfile: Tue Nov 12 23:54:56 2002 >Total hash size 300M >Initializing tablebases: /programme/winboard/nalimov >Testing qthard.epd, 3600 seconds, extra ply 4 >Testing: QuietTest.00294 Solution: Rc8 >[D]1k1r3r/1pqbbpp1/p2ppn2/5PB1/4P2P/2N3RB/PPPR1Q2/2K5 b - - Chess Tiger one hour search: 1k1r3r/1pqbbpp1/p2ppn2/5PB1/4P2P/2N3RB/PPPR1Q2/2K5 b - - ce -34; acd 14; acs 3600; pv Rc8 Rgd3 Qa5 Qg1 e5 Bg4 Bc6 h5 Qc5 Be3 Qa5 Bf3 Nxh5 Rh2;|Rd8c8 > Depth Time Score Best line > 6--> 1.00 -0.38 ... exf5 Bxf5 Bxf5 Qxf5 Ka8 Bxf6 Bxf6 Nd5 > 7/18 1.59 -0.56 ... exf5 Bxf5 Qc4 Bxd7 Rxd7 Rd4 Qc5 Rgd3 > 7/18 1.77 x.xx ... Ka8 > 7/18 2.03 -0.36 ... Ka8 Be3 Rdg8 fxe6 fxe6 Rf3 Rf8 Bb6 > 7--> 3.08 -0.36 ... Ka8 Be3 Rdg8 fxe6 fxe6 Rf3 Rf8 Bb6 > 8/19 3.73 -0.37 ... Ka8 Be3 Rdg8 fxe6 fxe6 Rg1 Qc4 Qf4 Rh5 > 8--> 7.36 -0.37 ... Ka8 Be3 Rdg8 fxe6 fxe6 Rg1 Qc4 Qf4 Rh5 > 9/21 9.73 -0.56 ... Ka8 Be3 Rdg8 Bb6 Qc6 Bg2 e5 Rgd3 Rc8 > 9/22 16.81 x.xx ... Rc8 > 9/23 30.16 x.xx ... Rde8 > 9/24 35.50 -0.53 ... Rde8 fxe6 fxe6 Rgd3 Bc8 Bf4 e5 Bxc8 exf4 Be6 > 9/24 39.32 x.xx ... Qc8 > 9/24 48.63 -0.49 ... Qc8 Rg1 Ka8 Be3 exf5 Bxf5 g6 Bxd7 Qxd7 Bb6 > 9--> 1:05 -0.49 ... Qc8 Rg1 Ka8 Be3 exf5 Bxf5 g6 Bxd7 Qxd7 Bb6 > 10/25 1:31 -0.72 ... Qc8 Qd4 e5 Qb6 Qc5 Qb3 Rdf8 Nd5 Nxd5 Rxd5 Bxg5+ > Rxg5 Qc7 Rxg7 Rxh4 > 10/25 1:33 x.xx ... Ka8 > 10/25 1:49 -0.49 ... Ka8 Qd4 exf5 exf5 Qc5 Qd3 Qb4 Nd5 Nxd5 Qxd5 Bxg5 > hxg5 > 10/27 2:07 x.xx ... Rc8 > 10/27 2:20 -0.46 ... Rc8 Rgd3 Qa5 Qe1 exf5 exf5 Rce8 Re3 Bd8 Bf4 Bc7 > 10/27 2:52 x.xx ... Rh7 > 10/27 3:13 -0.43 ... Rh7 Qd4 Re8 Rg1 Ka8 Na4 Bxa4 Qxa4 Nd7 Bxe7 Rxe7 > fxe6 fxe6 > 10--> 3:20 -0.43 ... Rh7 Qd4 Re8 Rg1 Ka8 Na4 Bxa4 Qxa4 Nd7 Bxe7 Rxe7 > fxe6 fxe6 > 11/27 4:53 -0.44 ... Rh7 Rg1 Ka8 Qd4 e5 Qb4 a5 Qb3 Qc5 Rdd1 Rf8 > 11--> 5:49 -0.44 ... Rh7 Rg1 Ka8 Qd4 e5 Qb4 a5 Qb3 Qc5 Rdd1 Rf8 > 12/30 8:37 -0.41 ... Rh7 Rg1 Ka8 Rgd1 Rhh8 Qd4 exf5 Bxf5 Bxf5 exf5 > Rde8 Re2 Qd7 > 12--> 13:14 -0.41 ... Rh7 Rg1 Ka8 Rgd1 Rhh8 Qd4 exf5 Bxf5 Bxf5 exf5 > Rde8 Re2 Qd7 > 13/34 24:09 -0.46 ... Rh7 Qg1 Ka8 Rgd3 Qa5 Qd4 Rdh8 Be3 b6 Bg5 Rc8 > fxe6 Bxe6 Bf5 > 13/34 28:42 x.xx ... Ka8 > 13/35 52:48 x.xx ... Rde8 > 13/35 59:05 -0.45 ... Rde8 Kb1 Ka8 Qd4 e5 Qd3 Bc6 Qc4 Ref8 Rd1 b5 Qd3 > g6 > 13... 59:05 10/40 e5 > >Time: 60:00, cpu 96.22%, nodes 1575186277, nps 437539 >Hash: 128M, used 100%, hits 20% >EGTB: probs 0, hits 0 > >Best move: Rde8 (-0.45) Not solved (0/1) >/* DRC Questions... >Is Rc8 really the best move here? The super GM players and other elite players >tend to choose it, but the other alternatives shown above look playable. Is >there a resounding reason to choose Rc8 over the alternatives? >*/ >Testing: QuietTest.11563 Solution: Kd2 >[D]2r2k2/r4p2/2b1p1p1/1p1p2Pp/3R1P1P/P1P5/1PB5/2K1R3 w - - 2r2k2/r4p2/2b1p1p1/1p1p2Pp/3R1P1P/P1P5/1PB5/2K1R3 w - - ce 2; acd 20; acs 3600; pv Kd2 Rcc7 Kd1 Rc8 Kc1 Rca8 Kd2 Rc8 Ke3 Ke7 Rd3 Kd6 Rd2 Rcc7 Rd4 Rc8 Be4 Ra4 Bg2;|Kc1d2 > Depth Time Score Best line > 11/19 1.31 0.15 Kd1 Rac7 Ke2 Kg7 Kf3 Rb8 Bd3 Rbc8 Kg3 Ra8 Kf3 Rac8 > 11--> 1.53 0.15 Kd1 Rac7 Ke2 Kg7 Kf3 Rb8 Bd3 Rbc8 Kg3 Ra8 Kf3 Rac8 > 12/23 2.55 0.16 Kd1 Rac7 Ke2 Kg7 Kf3 Rb8 Bd3 Rbc8 Kg3 Ra8 Kf3 Rac8 > 12--> 2.93 0.16 Kd1 Rac7 Ke2 Kg7 Kf3 Rb8 Bd3 Rbc8 Kg3 Ra8 Kf3 Rac8 > 13/23 5.60 0.17 Kd1 Rac7 Ke2 Kg7 Kf3 Rb8 Bd3 Rbc8 Kg3 Bd7 Rb4 Rc5 > Rd4 > 13--> 6.37 0.17 Kd1 Rac7 Ke2 Kg7 Kf3 Rb8 Bd3 Rbc8 Kg3 Bd7 Rb4 Rc5 > Rd4 > 14/26 14.94 0.16 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Rg1 Rc8 Bd3 Rac7 Re1 Bc6 > Kg3 Ra8 Rb4 Rb7 Rd4 Rc7 > 14--> 16.85 0.16 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Rg1 Rc8 Bd3 Rac7 Re1 Bc6 > Kg3 Ra8 Rb4 Rb7 Rd4 Rc7 > 15/28 30.52 0.18 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 f6 gxf6+ Rxf6 Rb4 Ra5 > Ke2 Kh6 Kd1 Rf8 Rd4 > 15--> 32.50 0.18 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 f6 gxf6+ Rxf6 Rb4 Ra5 > Ke2 Kh6 Kd1 Rf8 Rd4 > 16/28 51.11 0.17 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 f6 Ke3 Rc7 Rg1 Rc5 gxf6+ > Rxf6 Kd2 Kh6 Kc1 Rc8 > 16--> 1:04 0.17 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 f6 Ke3 Rc7 Rg1 Rc5 gxf6+ > Rxf6 Kd2 Kh6 Kc1 Rc8 > 17/30 1:28 0.17 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Bc6 Rd4 > Rc8 Rb1 Bd7 Re1 > 17--> 1:53 0.17 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Bc6 Rd4 > Rc8 Rb1 Bd7 Re1 > 18/32 3:25 0.18 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Bc6 Rd4 > Rc8 Bc2 Bd7 Bd3 > 18--> 4:00 0.18 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Bc6 Rd4 > Rc8 Bc2 Bd7 Bd3 > 19/34 5:30 0.18 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Kh7 Bc2 > Kg7 Rd4 Re8 Rd2 Rc4 Bd3 > 19--> 6:27 0.18 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Kh7 Bc2 > Kg7 Rd4 Re8 Rd2 Rc4 Bd3 > 20/35 10:50 0.17 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Kh7 Bc2 > Kg7 Rd4 Rcc8 a4 Ra8 axb5 Bxb5 Bd3 > 20--> 16:57 0.17 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Kh7 Bc2 > Kg7 Rd4 Rcc8 a4 Ra8 axb5 Bxb5 Bd3 > 21/43 29:03 0.18 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Kh7 Bc2 > Kg7 Rd4 Rcc8 a4 Ra8 axb5 Bxb5 Bd3 Bc6 > 21--> 34:38 0.18 Kd1 Bd7 Ke2 Kg7 Kf3 Rf8 Bd3 Rc7 Rb4 Rc5 Kg3 Kh7 Bc2 > Kg7 Rd4 Rcc8 a4 Ra8 axb5 Bxb5 Bd3 Bc6 > 22... 34:38 1/33 Kd1 > >Time: 60:00, cpu 96.15%, nodes 1953447200, nps 542621 >Hash: 128M, used 100%, hits 28% >EGTB: probs 0, hits 0 > >Best move: Kd1 (0.18) Not solved (11/13) >/* DRC Questions... >Ruffian doggedly sticks to Kd1 here. Most chess programs and elite players >prefer Kd2. Is Kd2 really better, and if so why? >*/ > >Testing: QuietTest.14499 Solution: h5 >[D]2r5/5p1k/4pBr1/p1Pp4/3P2PP/Pp4K1/1P6/5R2 w - - 2r5/5p1k/4pBr1/p1Pp4/3P2PP/Pp4K1/1P6/5R2 w - - ce 314; acd 19; acs 3600; pv h5 Rh6 Bg5 Rc7 Bxh6 Kxh6 Kh4 e5 g5+ Kg7 h6+ Kg8 Rf5 exd4 Rxd5 Rc8 Rxd4 Rxc5 Rd8+;|h5 > Depth Time Score Best line > 11--> 1.07 1.17 g5 Rgg8 Be5 f5 Kf4 Kg6 Rh1 Kh5 a4 Rc6 Bd6 > 12/24 1.59 ++ g5 > 12/24 1.94 1.42 g5 a4 h5 Rgg8 Be7 Rh8 Rxf7+ Kg8 g6 Rxh5 Bf6 Rc6 Rg7+ > Kf8 Rf7+ Ke8 > 12/24 3.07 x.xx a4 > 12/24 3.86 1.72 a4 Rc6 g5 Rg8 Be5 f5 Rf3 Kg6 Rxb3 Rf8 Kf4 Rf7 > 12--> 3.98 1.72 a4 Rc6 g5 Rg8 Be5 f5 Rf3 Kg6 Rxb3 Rf8 Kf4 Rf7 > 13/24 4.75 -- a4 > 13/25 5.78 1.85 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Kh5 Rb6 Rgc8 Rxc6 > 13--> 6.40 1.85 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Kh5 Rb6 Rgc8 Rxc6 > 14/28 9.50 1.86 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Kh5 Rb6 Rgc8 Rxc6 > Rxc6 Bf4 > 14--> 10.56 1.86 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Kh5 Rb6 Rgc8 Rxc6 > Rxc6 Bf4 > 15/30 16.85 1.94 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Rgc8 Kf4 Rf8 Rc3 > Rf7 Bd6 > 15--> 20.17 1.94 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Rgc8 Kf4 Rf8 Rc3 > Rf7 Bd6 > 16/31 30.31 2.04 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Rgc8 Kf4 Rf8 Rc3 > Rfc8 Bd6 Rh8 > 16--> 36.21 2.04 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Rgc8 Kf4 Rf8 Rc3 > Rfc8 Bd6 Rh8 > 17/35 1:06 2.24 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Ra6 Rb6 Rga8 Rb7 > Rg8 b4 axb4 Rxb4 Rc6 > 17--> 1:15 2.24 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Ra6 Rb6 Rga8 Rb7 > Rg8 b4 axb4 Rxb4 Rc6 > 18/36 1:59 2.19 a4 Rgg8 Be5 f5 g5 Kg6 Rf3 Rc6 Rxb3 Ra6 Rb6 Rga8 Rb7 > Rg8 Kf4 Rc6 Rb6 Rgc8 Rb3 Rf8 Rh3 Kh5 Bd6 Rf7 > 18/36 2:39 x.xx g5 > 18/36 3:11 2.39 g5 Rgg8 a4 Rc6 Rf3 Rgc8 Rxb3 Kg6 Kg4 Kh7 h5 R6c7 > Kf4 Ra7 Ke5 Rc6 Rc3 Rb7 b3 > 18--> 3:25 2.39 g5 Rgg8 a4 Rc6 Rf3 Rgc8 Rxb3 Kg6 Kg4 Kh7 h5 R6c7 > Kf4 Ra7 Ke5 Rc6 Rc3 Rb7 b3 > 19/38 5:24 2.63 g5 Rgg8 a4 Rc6 Rf3 Rc7 Rxb3 Kg6 Kg4 Kh7 h5 Ra7 Kf4 > Rc7 Ke5 Rgc8 Rb5 Ra8 Rb3 Rac8 > 19--> 5:53 2.63 g5 Rgg8 a4 Rc6 Rf3 Rc7 Rxb3 Kg6 Kg4 Kh7 h5 Ra7 Kf4 > Rc7 Ke5 Rgc8 Rb5 Ra8 Rb3 Rac8 > 20/42 9:02 2.71 g5 Rgg8 a4 Rc6 Rf3 Rc7 Rxb3 Kg6 Be5 Ra7 c6 Rc8 Rb7 > Ra6 Kg4 Raxc6 h5+ Kh7 Rxf7+ Kg8 g6 Rb6 Rg7+ Kf8 > 20/42 10:10 x.xx h5 > 20/42 11:24 ++ h5 > 20/43 18:06 3.38 h5 Rgg8 Kh4 Rgf8 Be5 f6 Rxf6 Rxf6 Bxf6 Rb8 g5 Rf8 > g6+ Kh6 g7 Rc8 a4 Rg8 Be5 > 20--> 18:15 3.38 h5 Rgg8 Kh4 Rgf8 Be5 f6 Rxf6 Rxf6 Bxf6 Rb8 g5 Rf8 > g6+ Kh6 g7 Rc8 a4 Rg8 Be5 > 21/44 26:48 3.40 h5 Rgg8 Kh4 Rg7 Bxg7 Kxg7 Re1 a4 g5 Rc7 Kg4 Rc6 h6+ > Kh7 Kg3 Rc8 Kf4 Rc6 Ke5 Kg6 Rf1 Kxg5 h7 Rc8 > 21--> 27:31 3.40 h5 Rgg8 Kh4 Rg7 Bxg7 Kxg7 Re1 a4 g5 Rc7 Kg4 Rc6 h6+ > Kh7 Kg3 Rc8 Kf4 Rc6 Ke5 Kg6 Rf1 Kxg5 h7 Rc8 > 22/49 56:51 ++ h5 > 22... 56:51 1/27 h5 > >Time: 60:00, cpu 98.26%, nodes -2081248545, nps 614918 >Hash: 128M, used 100%, hits 30% >EGTB: probs 27, hits 27 > >Best move: h5 (3.75) Solved (14/16) >/* DRC Questions... >The other moves look winning above. Some programs find h5 very quickly, but >Ruffian takes quite a long time. What sort of evaluation terms make h5 found >rapidly? >*/ > >Testing: QuietTest.22046 Solution: Kd7 >[D]3r4/2k5/p3N3/4p3/1p1p4/4r3/PPP3P1/1K1R4 b - - 3r4/2k5/p3N3/4p3/1p1p4/4r3/PPP3P1/1K1R4 b - - ce 180; acd 18; acs 3600; pv Kd7 Nxd8 Kxd8 Rg1 Ke7 g4 Rf3 g5 Kf7 g6+ Kg7 Kc1 e4 Kd1 e3 Rg4 Rf1+ Ke2 Rf2+ Kd1;|Kc7d7 > Depth Time Score Best line > 12/22 2.36 0.88 ... Kc8 Nxd8 Kxd8 b3 Ke7 Rd2 Ke6 Kb2 Kd5 a3 bxa3+ > Kxa3 e4 g4 > 12--> 2.45 0.88 ... Kc8 Nxd8 Kxd8 b3 Ke7 Rd2 Ke6 Kb2 Kd5 a3 bxa3+ > Kxa3 e4 g4 > 13/23 4.33 0.94 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Kd2 Rg3 Rg1 e4 Ke2 Ke6 > Kf2 Rg5 Ke2 > 13--> 4.45 0.94 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Kd2 Rg3 Rg1 e4 Ke2 Ke6 > Kf2 Rg5 Ke2 > 14/25 9.56 0.83 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rd3 Re2 g3 Ke6 Rb3 a5 a3 > Rg2 axb4 axb4 Rxb4 Rxg3 > 14--> 9.90 0.83 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rd3 Re2 g3 Ke6 Rb3 a5 a3 > Rg2 axb4 axb4 Rxb4 Rxg3 > 15/28 18.60 0.90 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rd3 Re2 g3 a5 a3 Kd6 axb4 > axb4 Rd2 Re1+ Rd1 Rxd1+ Kxd1 e4 Ke2 > 15--> 18.99 0.90 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rd3 Re2 g3 a5 a3 Kd6 axb4 > axb4 Rd2 Re1+ Rd1 Rxd1+ Kxd1 e4 Ke2 > 16/31 42.35 0.89 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rh1 a5 Rh7+ Kf6 Ra7 Re1+ > Kd2 Rg1 Rxa5 e4 Rb5 e3+ Kd3 Rd1+ Ke2 Rd2+ Kf3 Rxc2 > Rxb4 > 16--> 43.36 0.89 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rh1 a5 Rh7+ Kf6 Ra7 Re1+ > Kd2 Rg1 Rxa5 e4 Rb5 e3+ Kd3 Rd1+ Ke2 Rd2+ Kf3 Rxc2 > Rxb4 > 17/32 1:17 0.85 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rh1 Rg3 Rh7+ Kd6 Rh6+ Kd5 > Rxa6 Rxg2 Ra4 e4 Rxb4 Rg1+ Kd2 e3+ Ke2 Rg2+ Kd1 Ke4 > 17--> 1:20 0.85 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rh1 Rg3 Rh7+ Kd6 Rh6+ Kd5 > Rxa6 Rxg2 Ra4 e4 Rxb4 Rg1+ Kd2 e3+ Ke2 Rg2+ Kd1 Ke4 > 18/36 3:49 0.87 ... Kc8 Nxd8 Kxd8 Kc1 Kd7 Rh1 a5 Rh7+ Kc6 Ra7 e4 > Rxa5 Rg3 Ra6+ Kb5 Rd6 Kc5 Re6 e3 Re5+ Kc4 b3+ Kc3 > 18--> 3:54 0.87 ... Kc8 Nxd8 Kxd8 Kc1 Kd7 Rh1 a5 Rh7+ Kc6 Ra7 e4 > Rxa5 Rg3 Ra6+ Kb5 Rd6 Kc5 Re6 e3 Re5+ Kc4 b3+ Kc3 > 19/38 7:04 0.80 ... Kc8 Nxd8 Kxd8 Kc1 Kd7 Rh1 a5 Rh7+ Kc6 Ra7 e4 > Rxa5 Rg3 Ra6+ Kb5 Rd6 Kc5 Re6 e3 Re5+ Kc6 Re4 Kd5 > 19--> 7:14 0.80 ... Kc8 Nxd8 Kxd8 Kc1 Kd7 Rh1 a5 Rh7+ Kc6 Ra7 e4 > Rxa5 Rg3 Ra6+ Kb5 Rd6 Kc5 Re6 e3 Re5+ Kc6 Re4 Kd5 > 20/41 18:25 0.98 ... Kc8 Nxd8 Kxd8 Kc1 Kd7 Rd3 Re1+ Rd1 Rxd1+ Kxd1 > e4 g4 Ke6 Kd2 Ke5 c3 bxc3+ bxc3 d3 Ke3 a5 c4 a4 g5 > a3 > 20--> 18:45 0.98 ... Kc8 Nxd8 Kxd8 Kc1 Kd7 Rd3 Re1+ Rd1 Rxd1+ Kxd1 > e4 g4 Ke6 Kd2 Ke5 c3 bxc3+ bxc3 d3 Ke3 a5 c4 a4 g5 > a3 > 21/42 34:32 0.75 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rd3 Re1+ Rd1 Re2 Rd2 Re4 > Rd3 Ke6 c3 Kd5 cxd4 exd4 Kd2 Rh4 Rh3 Rg4 Rh5+ Ke4 > Rh2 > 21--> 35:09 0.75 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rd3 Re1+ Rd1 Re2 Rd2 Re4 > Rd3 Ke6 c3 Kd5 cxd4 exd4 Kd2 Rh4 Rh3 Rg4 Rh5+ Ke4 > Rh2 > 22/46 56:45 0.71 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rd3 Re1+ Rd1 Re2 Rd2 Re4 > Rd3 Ke6 c3 Kd5 Kd2 Rh4 Rh3 Rxh3 gxh3 e4 cxd4 Kxd4 > h4 a5 > 22--> 57:57 0.71 ... Kc8 Nxd8 Kxd8 Kc1 Ke7 Rd3 Re1+ Rd1 Re2 Rd2 Re4 > Rd3 Ke6 c3 Kd5 Kd2 Rh4 Rh3 Rxh3 gxh3 e4 cxd4 Kxd4 > h4 a5 > 23... 57:57 1/7 Kc8 > >Time: 60:00, cpu 95.67%, nodes -2090968334, nps 612220 >Hash: 128M, used 100%, hits 29% >EGTB: probs 50823, hits 50823 > >Best move: Kc8 (0.71) Not solved (22/25) >/* DRC Questions... >Is Kd7 better than Kc8? >*/ > >Testing: QuietTest.28881 Solution: Kg8 >[D]5r2/1p4k1/p3r3/8/1q2N3/5P2/6PP/Q3R1K1 b - - 5r2/1p4k1/p3r3/8/1q2N3/5P2/6PP/Q3R1K1 b - - ce 8; acd 15; acs 3600; pv Kg6 Rd1 Qb6+ Kh1 Qc7 Qa2 Re5 Qb1 Kg7 Nd6 Re2 Rd4 Qe7 Rd1 Kh8 Qxb7;|Kg7g6 > Depth Time Score Best line > 9/21 1.65 0.65 ... Kg6 Qc1 Rf5 Rd1 Qb3 Rd7 Rc6 Qd2 b5 > 9--> 1.79 0.65 ... Kg6 Qc1 Rf5 Rd1 Qb3 Rd7 Rc6 Qd2 b5 > 10/27 6.82 0.71 ... Kg6 Rd1 Qb6+ Kh1 Rd8 Rxd8 Qxd8 Qb1 Qb6 Qd3 Kh6 > h4 > 10--> 7.50 0.71 ... Kg6 Rd1 Qb6+ Kh1 Rd8 Rxd8 Qxd8 Qb1 Qb6 Qd3 Kh6 > h4 > 11/27 34.31 0.71 ... Kg6 Rb1 Qe7 Qc3 b5 Qc2 Re5 Re1 Kh5 Qd2 Rd8 > 11--> 36.00 0.71 ... Kg6 Rb1 Qe7 Qc3 b5 Qc2 Re5 Re1 Kh5 Qd2 Rd8 > 12/31 57.97 0.68 ... Kg6 Rb1 Qe7 Qc3 b5 Qc2 Re5 Qf2 Qe6 Qg3+ Kh6 Qh4+ > Rh5 Qg3 > 12--> 1:03 0.68 ... Kg6 Rb1 Qe7 Qc3 b5 Qc2 Re5 Qf2 Qe6 Qg3+ Kh6 Qh4+ > Rh5 Qg3 > 13/34 2:34 0.58 ... Kg6 Rb1 Qe7 Qc3 b5 Qc2 Kh6 Qd2+ Kh5 Ng3+ Kg6 > Qd3+ Kf7 Qf5+ Ke8 Qh5+ Qf7 Qd5 > 13--> 2:41 0.58 ... Kg6 Rb1 Qe7 Qc3 b5 Qc2 Kh6 Qd2+ Kh5 Ng3+ Kg6 > Qd3+ Kf7 Qf5+ Ke8 Qh5+ Qf7 Qd5 > 14/36 9:07 0.59 ... Kg6 h4 Rc6 Nf2 Kh7 Ng4 Rfc8 Kh2 Rc1 Rxc1 Qf4+ > g3 Rxc1 Qb2 Qc7 > 14--> 9:44 0.59 ... Kg6 h4 Rc6 Nf2 Kh7 Ng4 Rfc8 Kh2 Rc1 Rxc1 Qf4+ > g3 Rxc1 Qb2 Qc7 > 15/38 35:44 0.48 ... Kg6 h4 Qe7 Qb1 Kg7 Qb2+ Kg8 Qb3 Kh8 h5 Rh6 Qd5 > Qf7 Qe5+ Qg7 Ng3 Qxe5 Rxe5 > 15--> 44:58 0.48 ... Kg6 h4 Qe7 Qb1 Kg7 Qb2+ Kg8 Qb3 Kh8 h5 Rh6 Qd5 > Qf7 Qe5+ Qg7 Ng3 Qxe5 Rxe5 > 16... 44:58 1/11 Kg6 > >Time: 60:00, cpu 97.60%, nodes 2144222414, nps 595615 >Hash: 128M, used 100%, hits 15% >EGTB: probs 247, hits 247 > >Best move: Kg6 (0.48) Not solved (31/35) >/* DRC Questions... >Is Kg8 better than Kg6? >*/ > >Testing: QuietTest.32916 Solution: fxe4+ >[D]6r1/2n2p2/1pk3r1/p1pp1p2/3PP2p/PPNK1P2/2R1R1PP/8 b - - 6r1/2n2p2/1pk3r1/p1pp1p2/3PP2p/PPNK1P2/2R1R1PP/8 b - - ce 6; acd 17; acs 3600; pv fxe4+ fxe4 dxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 Ne2 Ne6 Nxd4+ Nxd4 Kxd4 Rd2+ Kc3;|fe4 > Depth Time Score Best line > 8/23 1.91 0.43 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Rb2 Rh6+ Ne6+ Kc4 Rg2 > 8--> 2.28 0.43 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Rb2 Rh6+ Ne6+ Kc4 Rg2 > 9/25 4.34 0.24 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Kd6 Ne4+ Ke7 Ke5 b5 > 9--> 5.81 0.24 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Kd6 Ne4+ Ke7 Ke5 b5 > 10/27 9.48 0.34 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Rb2 Ke5 Rxb3 Rc4+ Kd7 a4 > 10--> 12.17 0.34 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Rb2 Ke5 Rxb3 Rc4+ Kd7 a4 > 11/28 23.47 0.27 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Rb2 Rh6+ Ne6+ Kc4 Rd2 Rh4 f5 h3 > 11--> 30.97 0.27 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Rb2 Rh6+ Ne6+ Kc4 Rd2 Rh4 f5 h3 > 12/31 1:15 0.10 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Kc5 Rh5+ Kd6 Nxd4 Nd5 Nf5+ Ke6 h4 > 12--> 1:41 0.10 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Kc5 Rh5+ Kd6 Nxd4 Nd5 Nf5+ Ke6 h4 > 13/35 2:52 0.17 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Kc5 Nxd4 Nd5 h3 Rg3+ Ke4 Re3+ Kf5 b5 a4 > 13--> 3:48 0.17 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Kc5 Nxd4 Nd5 h3 Rg3+ Ke4 Re3+ Kf5 b5 a4 > 14/37 7:46 0.09 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Kc5 Nxd4 Nd5 Nf5 b5 h3 Rg5 Ke4 > 14--> 11:02 0.09 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Kc5 Nxd4 Nd5 Nf5 b5 h3 Rg5 Ke4 > 15/39 23:44 0.04 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Ne6 Nxd4+ Kd7 h3 Rg3+ Kc4 Re3 Nc2 Re2 Nd4 Rg2 > 15--> 32:08 0.04 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Ne6 Nxd4+ Kd7 h3 Rg3+ Kc4 Re3 Nc2 Re2 Nd4 Rg2 > 16/42 55:27 0.03 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Ne6 Nxd4+ Kd6 Nf5+ Ke5 Ne3 Nc5+ Kc3 Ra2 Nc4+ > Ke6 a4 Nd7 h3 > 16... 55:27 2/34 fxe4+ > >Time: 60:00, cpu 98.19%, nodes 2144750068, nps 595760 >Hash: 128M, used 100%, hits 20% >EGTB: probs 36, hits 36 > >Best move: dxe4+ (0.03) Not solved (34/39) >/* DRC Questions... >This one looks like a simple transposition. Is there any reason to prefer fxe4+ >over dxe4+? >*/ > >Testing: QuietTest.32917 Solution: fxe4+ >[D]6r1/2n2p2/1pk3r1/p1pp1p2/P2PP2p/1PNK1P2/2R1R1PP/8 b - - 6r1/2n2p2/1pk3r1/p1pp1p2/P2PP2p/1PNK1P2/2R1R1PP/8 b - - ce 6; acd 14; acs 3600; pv fxe4+ fxe4 dxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 Ne2 Ne6 Nxd4+ Nxd4 Kxd4 Rd2+ Kc3;|fe4 > Depth Time Score Best line > 8/23 1.53 0.25 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Ne6+ Ke5 Nc5 Rh6+ Ne6 > 8--> 1.99 0.25 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Ne6+ Ke5 Nc5 Rh6+ Ne6 > 9/27 3.39 0.16 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 f6 h3 Ne6+ Ke4 Kc5 > 9--> 5.11 0.16 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 f6 h3 Ne6+ Ke4 Kc5 > 10/29 9.51 0.16 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 f6 h3 Ne6+ Kc4 f5 Nd5 > 10--> 13.36 0.16 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 f6 h3 Ne6+ Kc4 f5 Nd5 > 11/30 24.57 0.12 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 b5 axb5+ Nxb5+ Nxb5 Kxb5 Rf4 Rxh2 Rxf7 Rg2 > 11--> 33.63 0.12 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 b5 axb5+ Nxb5+ Nxb5 Kxb5 Rf4 Rxh2 Rxf7 Rg2 > 12/32 1:04 0.11 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Kd6 Ne4+ Ke7 Rh7 Ne6+ Ke3 Nf8 Kf3 Rc2 > 12--> 1:22 0.11 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Kd6 Ne4+ Ke7 Rh7 Ne6+ Ke3 Nf8 Kf3 Rc2 > 13/35 2:44 0.06 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Rb2 Kc4 Ne8 Nb5 Nf6 Nd4+ Kd6 Nb5+ Ke5 h3 > 13--> 3:39 0.06 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Kxd4 Rb2 Kc4 Ne8 Nb5 Nf6 Nd4+ Kd6 Nb5+ Ke5 h3 > 14/36 6:03 0.11 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Nd5 Nxd4+ Kc5 Rh8 Nf4+ Ke4 Ne6 Nxe6+ fxe6 h4 > Re2+ Kd3 Rf2 > 14--> 8:24 0.11 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Nd5 Nxd4+ Kc5 Rh8 Nf4+ Ke4 Ne6 Nxe6+ fxe6 h4 > Re2+ Kd3 Rf2 > 15/39 17:36 0.02 ... dxe4+ fxe4 fxe4+ Rxe4 Rxg2 Rxg2 Rxg2 Rxh4 cxd4 > Ne2 Ne6 Nxd4+ Kd7 Nxe6 Kxe6 Rh6+ f6 h4 Rg3+ Kc4 Rg4+ > Kd3 Rb4 Kc3 > 15/39 25:11 x.xx ... Rd8 > 15/39 26:59 0.09 ... Rd8 exf5 Rg5 Re5 Rdg8 Nb5 Nxb5 axb5+ Kd6 Ree2 > Rxf5 Rf2 Rc8 Rfe2 Rg5 dxc5+ Rxc5 f4 > 15--> 29:15 0.09 ... Rd8 exf5 Rg5 Re5 Rdg8 Nb5 Nxb5 axb5+ Kd6 Ree2 > Rxf5 Rf2 Rc8 Rfe2 Rg5 dxc5+ Rxc5 f4 > 16/40 34:38 0.11 ... Rd8 exf5 Rg5 Ke3 Rxf5 Kf2 Rg8 Re1 f6 Rd1 Rfg5 > Kf1 Re8 Rdc1 Rg7 Ne2 > 16--> 57:15 0.11 ... Rd8 exf5 Rg5 Ke3 Rxf5 Kf2 Rg8 Re1 f6 Rd1 Rfg5 > Kf1 Re8 Rdc1 Rg7 Ne2 > 17... 57:15 1/33 Rd8 > >Time: 60:00, cpu 98.61%, nodes 2129696208, nps 591577 >Hash: 128M, used 100%, hits 20% >EGTB: probs 38, hits 38 > >Best move: Rd8 (0.11) Not solved (34/40) >/* DRC Questions... >Is Rd8 the superior move? The dxe4+ line looks like a simple transposition of >the stated best move fxe4+. >*/ > > >Testing: QuietTest.51109 Solution: Qc3 >[D]r1r3k1/5p1p/6p1/p2R2P1/1p3P2/1P4q1/P1PQ4/1K1R4 b - - r1r3k1/5p1p/6p1/p2R2P1/1p3P2/1P4q1/P1PQ4/1K1R4 b - - ce -8; acd 16; acs 3600; pv Qc3 Qf2 Re8 f5 a4 fxg6 hxg6 Rd7 Rf8 R1d3 Qh8 R3d4 axb3 axb3 Ra5 Qe3 Qe5 Qxe5;|Qg3c3 > Depth Time Score Best line > 8/18 1.05 x.xx ... a4 > 8/18 1.38 -0.34 ... a4 Qxb4 axb3 axb3 Rcb8 Qd4 Qf3 Rd7 Qe2 > 8--> 1.63 -0.34 ... a4 Qxb4 axb3 axb3 Rcb8 Qd4 Qf3 Rd7 Qe2 > 9/19 2.94 -0.44 ... a4 Qxb4 axb3 axb3 Qf3 R5d4 Kg7 Rd7 Qe2 Qd2 > 9/20 3.81 x.xx ... Qc3 > 9/20 3.86 -0.43 ... Qc3 Qxc3 Rxc3 R1d3 Rxd3 cxd3 a4 bxa4 Rxa4 Rd7 > Kg7 > 9--> 5.50 -0.43 ... Qc3 Qxc3 Rxc3 R1d3 Rxd3 cxd3 a4 bxa4 Rxa4 Rd7 > Kg7 > 10/22 8.71 -0.37 ... Qc3 Rd7 Qc6 Re1 Re8 Ree7 Rxe7 Rxe7 Re8 Rxe8+ > Qxe8 c4 bxc3 Qxc3 > 10/23 11.48 x.xx ... Qf3 > 10/23 12.89 -0.33 ... Qf3 Rd3 Qc6 Rd6 Qc5 Re1 a4 Re5 Qg1+ Re1 Qc5 > 10--> 13.94 -0.33 ... Qf3 Rd3 Qc6 Rd6 Qc5 Re1 a4 Re5 Qg1+ Re1 Qc5 > 11/25 16.91 -0.48 ... Qf3 Rd3 Qg4 Qh2 a4 Rh1 h5 gxh6 axb3 axb3 Kh7 > Qh4 > 11/25 18.47 x.xx ... Qc3 > 11/25 21.38 -0.46 ... Qc3 Qxc3 Rxc3 R1d3 Rxd3 Rxd3 Kg7 c4 bxc3 Kc2 > Rc8 Rxc3 > 11--> 30.17 -0.46 ... Qc3 Qxc3 Rxc3 R1d3 Rxd3 Rxd3 Kg7 c4 bxc3 Kc2 > Rc8 Rxc3 > 12/31 52.86 -0.38 ... Qc3 Rd4 Qc5 Qh2 Qc3 R4d3 Qg7 Qd2 Rc5 Rd8+ Rxd8 > Qxd8+ Qf8 Qxf8+ Kxf8 Rd7 Rc3 > 12/31 1:00 x.xx ... Qf3 > 12--> 1:18 -0.38 ... Qc3 Rd4 Qc5 Qh2 Qc3 R4d3 Qg7 Qd2 Rc5 Rd8+ Rxd8 > Qxd8+ Qf8 Qxf8+ Kxf8 Rd7 Rc3 > 13/32 1:41 -0.43 ... Qc3 Qxc3 Rxc3 Kb2 Rf3 R1d4 Rc8 a3 bxa3+ Kxa3 > Rxc2 Rxa5 Rcc3 Ra8+ Kg7 Rb8 > 13--> 2:25 -0.43 ... Qc3 Qxc3 Rxc3 Kb2 Rf3 R1d4 Rc8 a3 bxa3+ Kxa3 > Rxc2 Rxa5 Rcc3 Ra8+ Kg7 Rb8 > 14/32 2:57 -0.42 ... Qc3 Qxc3 Rxc3 R1d3 Rxd3 cxd3 Kg7 d4 h5 gxh6+ > Kxh6 Kc2 Kg7 Kd3 Kf6 Re5 a4 > 14--> 4:25 -0.42 ... Qc3 Qxc3 Rxc3 R1d3 Rxd3 cxd3 Kg7 d4 h5 gxh6+ > Kxh6 Kc2 Kg7 Kd3 Kf6 Re5 a4 > > >Time: 4:25, cpu 98.65%, nodes 158360797, nps 597497 >Hash: 128M, used 98%, hits 27% >EGTB: probs 0, hits 0 > >Best move: Qc3 (-0.42) Solved (53/59) >/* DRC Questions... >I think Qc3 is better, and many programs find it quickly. What sort of >evaluation terms will zero in on Qc3? >*/ > >Testing: QuietTest.60069 Solution: Nexd5 >[D]r2r1k2/1bn2ppp/5b2/1ppp4/8/2N1N1P1/PP2PPBP/1R1R2K1 w - - r2r1k2/1bn2ppp/5b2/1ppp4/8/2N1N1P1/PP2PPBP/1R1R2K1 w - - ce 60; acd 20; acs 3600; pv Nexd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra6 a3 Be5 e4 g5 Rd2 f5 f3 Rad6 Kg2 fxe4 fxe4 Ke7 Rbd1;|Ne3d5 > Depth Time Score Best line > 9/17 1.16 0.44 Ncxd5 Nxd5 Nxd5 Bd4 Nc7 Bxg2 Kxg2 Rxa2 Nxb5 Bf6 Rxd8+ > Bxd8 > 9--> 1.50 0.44 Ncxd5 Nxd5 Nxd5 Bd4 Nc7 Bxg2 Kxg2 Rxa2 Nxb5 Bf6 Rxd8+ > Bxd8 > 10/20 2.20 0.58 Ncxd5 Nxd5 Nxd5 Bd4 Nc7 Bxg2 Kxg2 Rxa2 Nxb5 Ke7 Nxd4 > Rxd4 Rxd4 cxd4 > 10--> 2.88 0.58 Ncxd5 Nxd5 Nxd5 Bd4 Nc7 Bxg2 Kxg2 Rxa2 Nxb5 Ke7 Nxd4 > Rxd4 Rxd4 cxd4 > 11/22 4.10 0.58 Ncxd5 Nxd5 Nxd5 Bd4 Nc7 Bxg2 Kxg2 Rxa2 Nxb5 Ke7 Nxd4 > Rxd4 Rxd4 cxd4 > 11--> 4.95 0.58 Ncxd5 Nxd5 Nxd5 Bd4 Nc7 Bxg2 Kxg2 Rxa2 Nxb5 Ke7 Nxd4 > Rxd4 Rxd4 cxd4 > 12/24 8.90 0.71 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rd4 Rdc1 c4 Rc2 > Rd3 f4 > 12--> 10.08 0.71 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rd4 Rdc1 c4 Rc2 > Rd3 f4 > 13/24 16.15 0.67 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 c4 a3 b4 Rdc1 bxa3 > bxa3 c3 Rb7 > 13--> 19.54 0.67 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 c4 a3 b4 Rdc1 bxa3 > bxa3 c3 Rb7 > 14/30 39.76 0.75 Ncxd5 Nxd5 Nxd5 Bd4 Nc7 Bxg2 Kxg2 Rxa2 Nxb5 Ke7 Nxd4 > cxd4 Kf3 Ke6 b4 Ke5 > 14--> 46.99 0.75 Ncxd5 Nxd5 Nxd5 Bd4 Nc7 Bxg2 Kxg2 Rxa2 Nxb5 Ke7 Nxd4 > cxd4 Kf3 Ke6 b4 Ke5 > 15/30 1:19 0.65 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rdc1 > Rd2 Rxc5 Bd4 Rc7 Bxf2+ Kg2 > 15--> 1:35 0.65 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rdc1 > Rd2 Rxc5 Bd4 Rc7 Bxf2+ Kg2 > 16/30 2:40 0.59 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rdc1 > Rd2 Rxc5 Bd4 Rc7 Bxf2+ Kh1 f6 > 16--> 3:20 0.59 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rdc1 > Rd2 Rxc5 Bd4 Rc7 Bxf2+ Kh1 f6 > 17/34 5:48 0.65 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rdc1 > Rd2 a4 bxa4 bxa4 Bd4 Rf1 Rb2 a5 > 17--> 7:05 0.65 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rdc1 > Rd2 a4 bxa4 bxa4 Bd4 Rf1 Rb2 a5 > 18/34 11:29 0.60 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rf1 Rc8 > a3 g6 Rbc1 Rd2 Bb7 Rb8 Bd5 > 18--> 14:51 0.60 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rf1 Rc8 > a3 g6 Rbc1 Rd2 Bb7 Rb8 Bd5 > 19/35 24:59 0.62 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rf1 Bg5 > f4 Be7 g4 Bd6 Rf3 Rd2 a4 Rb8 > 19--> 32:45 0.62 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rf1 Bg5 > f4 Be7 g4 Bd6 Rf3 Rd2 a4 Rb8 > 20/43 59:53 0.61 Ncxd5 Nxd5 Nxd5 Bxd5 Bxd5 Ra4 e4 Rb4 b3 Rd4 Rf1 Rc8 > a3 Rc7 h3 g6 Rfc1 Rd2 a4 Bb2 Re1 > 20... 59:53 2/36 Nexd5 > >Time: 60:00, cpu 98.33%, nodes -1999063429, nps 637747 >Hash: 128M, used 100%, hits 32% >EGTB: probs 0, hits 0 > >Best move: Ncxd5 (0.61) Not solved (67/74) >/* DRC Questions... >Simple transposition, I think. Any reason to prefer the other order? >*/ > >Testing: QuietTest.61495 Solution: gxf3 >[D]r3brk1/1p6/p1pbpq1p/3pNp2/1PPP1Pp1/P1QBP3/6PP/2R2RK1 b - f3 r3brk1/1p6/p1pbpq1p/3pNp2/1PPP1Pp1/P1QBP3/6PP/2R2RK1 b - f3 ce 14; acd 17; acs 3600; pv gxf3 Rxf3 Qe7 Rh3 Kg7 Qd2 Rh8 Be2 Bxe5 dxe5 dxc4 Bxc4 Rd8 Bd3 Bg6 Rd1 Qc7 Qc3;|gf3 > Depth Time Score Best line > 8/19 1.84 -0.62 ... Qh4 Rf2 Bxe5 fxe5 g3 hxg3 Qxg3 Rf3 Qh4 cxd5 cxd5 > 8/19 3.21 x.xx ... Kh8 > 8/19 3.22 -0.61 ... Kh8 c5 Bc7 Rb1 a5 a4 axb4 Rxb4 Bxe5 fxe5 > 8--> 3.53 -0.61 ... Kh8 c5 Bc7 Rb1 a5 a4 axb4 Rxb4 Bxe5 fxe5 > 9/22 7.62 -0.56 ... Kh8 g3 Bc7 Rf2 dxc4 Bxc4 a5 b5 Rc8 bxc6 Bxc6 > Nxc6 bxc6 > 9--> 9.11 -0.56 ... Kh8 g3 Bc7 Rf2 dxc4 Bxc4 a5 b5 Rc8 bxc6 Bxc6 > Nxc6 bxc6 > 10/22 17.69 -0.53 ... Kh8 g3 Rg8 c5 Bc7 a4 a5 Rb1 axb4 Rxb4 Bxe5 fxe5 > 10--> 21.49 -0.53 ... Kh8 g3 Rg8 c5 Bc7 a4 a5 Rb1 axb4 Rxb4 Bxe5 fxe5 > 11/27 1:03 -0.53 ... Kh8 Rf2 Rg8 g3 dxc4 Bxc4 Rg7 Qb3 Re7 a4 a5 > 11/28 1:15 x.xx ... b5 > 11/28 1:25 -0.42 ... b5 cxd5 cxd5 Rf2 Ra7 Qe1 Rc7 Rxc7 Bxc7 Qc3 Bxe5 > fxe5 Qh4 > 11--> 1:26 -0.42 ... b5 cxd5 cxd5 Rf2 Ra7 Qe1 Rc7 Rxc7 Bxc7 Qc3 Bxe5 > fxe5 Qh4 > 12/30 1:45 -0.44 ... b5 c5 Bc7 a4 bxa4 Ra1 a5 Rxa4 axb4 Qxb4 Rxa4 > Qxa4 Bxe5 fxe5 > 12--> 2:04 -0.44 ... b5 c5 Bc7 a4 bxa4 Ra1 a5 Rxa4 axb4 Qxb4 Rxa4 > Qxa4 Bxe5 fxe5 > 13/30 2:23 -0.44 ... b5 c5 Bc7 a4 bxa4 Ra1 a5 Rxa4 axb4 Rxb4 Ba5 Qa3 > Bxb4 Qxa8 > 13--> 2:56 -0.44 ... b5 c5 Bc7 a4 bxa4 Ra1 a5 Rxa4 axb4 Rxb4 Ba5 Qa3 > Bxb4 Qxa8 > 14/30 3:32 -0.47 ... b5 c5 Bc7 a4 Qh4 Ra1 Bxe5 fxe5 Bg6 Rf4 Kh8 Qa3 > a5 axb5 axb4 Qxa8 Rxa8 Rxa8+ > 14/34 6:59 x.xx ... Qh4 > 14--> 8:25 -0.47 ... b5 c5 Bc7 a4 Qh4 Ra1 Bxe5 fxe5 Bg6 Rf4 Kh8 Qa3 > a5 axb5 axb4 Qxa8 Rxa8 Rxa8+ > 15/34 9:22 -0.56 ... b5 c5 Bc7 a4 bxa4 Ra1 a5 Rxa4 axb4 Rxb4 Qh4 Rb7 > Ba5 Qc1 g3 h3 > 15/34 12:40 x.xx ... Kh8 > 15/36 27:01 -0.53 ... Kh8 c5 Bc7 Rb1 Qh4 g3 Qh5 Rf2 Bg6 h4 Rg8 a4 a5 > b5 cxb5 Bxb5 Bxe5 fxe5 > 15--> 39:42 -0.53 ... Kh8 c5 Bc7 Rb1 Qh4 g3 Qh5 Rf2 Bg6 h4 Rg8 a4 a5 > b5 cxb5 Bxb5 Bxe5 fxe5 > 16/38 57:56 -0.50 ... Kh8 c5 Bc7 Rb1 Qh4 g3 Qh5 Rf2 Bg6 h4 Rfc8 a4 > a5 b5 cxb5 Bxb5 Bxe5 fxe5 > 16... 59:11 4/35 gxf3 > >Time: 60:00, cpu 97.56%, nodes 1759539233, nps 488755 >Hash: 128M, used 100%, hits 25% >EGTB: probs 0, hits 0 > >Best move: Kh8 (-0.50) Not solved (69/77) >/* DRC Questions... >This one seems to be terribly difficult for Ruffian, but I wonder if gxf3 is >really superior to the alternatives b5 and Kh8 >*/ > >Testing: QuietTest.66760 Solution: f6 >[D]r4k2/3n2pp/1pbp3r/p3pP2/2B5/1N4P1/PPP4P/3R1RK1 w - - r4k2/3n2pp/1pbp3r/p3pP2/2B5/1N4P1/PPP4P/3R1RK1 w - - ce 24; acd 18; acs 3600; pv f6 Rxf6 Rxd6 Rc8 Nd2 e4 Rfxf6+ Nxf6 Ba6 Rc7 Nc4 Ke7 Rd4 Nd7 Nd6 Nc5 Bc4 Rd7 Nf5+;|f6 > Depth Time Score Best line > 9/21 1.33 0.28 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 c4 Rb8 Rd2 Rxe6 fxe6 Kxe6 > 9--> 1.82 0.28 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 c4 Rb8 Rd2 Rxe6 fxe6 Kxe6 > 10/23 3.45 0.07 Be6 Ke7 Rf2 Nf8 Bc4 a4 Nc1 b5 Bg8 Be4 > 10--> 6.38 0.07 Be6 Ke7 Rf2 Nf8 Bc4 a4 Nc1 b5 Bg8 Be4 > 11/24 9.59 0.07 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 Re3 Re8 g4 Rxe6 fxe6 Kxe6 > 11--> 16.86 0.07 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 Re3 Re8 g4 Rxe6 fxe6 Kxe6 > 12/28 23.90 -0.04 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 Rd3 Rb8 b3 Bb5 Rf3 Kf8 > c4 > 12--> 43.94 -0.04 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 Rd3 Rb8 b3 Bb5 Rf3 Kf8 > c4 > 13/29 59.16 -0.10 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 Rd3 Rb8 b3 Rd8 g4 Rh4 > h3 Kf8 > 13--> 1:54 -0.10 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 Rd3 Rb8 b3 Rd8 g4 Rh4 > h3 Kf8 > 14/30 2:29 -0.02 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 Rd3 Rb8 b3 Re8 g4 Bd7 > Bd5 Kf8 c4 > 14--> 3:32 -0.02 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 Rd3 Rb8 b3 Re8 g4 Bd7 > Bd5 Kf8 c4 > 15/32 5:32 -0.11 Be6 Ke7 Rfe1 Re8 Rd3 a4 Rc3 Bb5 Nd2 Nc5 Bc4 Bxc4 > Nxc4 Rf6 b4 axb3 cxb3 > 15--> 10:33 -0.11 Be6 Ke7 Rfe1 Re8 Rd3 a4 Rc3 Bb5 Nd2 Nc5 Bc4 Bxc4 > Nxc4 Rf6 b4 axb3 cxb3 > 16/34 18:10 -0.17 Be6 Ke7 Rfe1 Nf6 Nd2 Rf8 Nc4 Ne4 Nxb6 Ng5 Bd5 Nf3+ > Bxf3 Bxf3 Nd5+ Kd8 Rd2 Rxf5 Rf1 > 16--> 30:47 -0.17 Be6 Ke7 Rfe1 Nf6 Nd2 Rf8 Nc4 Ne4 Nxb6 Ng5 Bd5 Nf3+ > Bxf3 Bxf3 Nd5+ Kd8 Rd2 Rxf5 Rf1 > 17/39 41:54 -0.23 Be6 Ke7 Rfe1 Nc5 Nxc5 bxc5 Rd3 g6 c4 Rd8 b3 Bd7 Bxd7 > Rxd7 fxg6 Rxg6 Rf3 Rf6 Kf2 > 17... 50:52 8/35 Nd2 > >Time: 60:00, cpu 97.11%, nodes 1904501565, nps 529019 >Hash: 128M, used 100%, hits 24% >EGTB: probs 0, hits 0 > >Best move: Be6 (-0.23) Not solved (73/82) >/* DRC Questions... >Ruffian never even sniffs at f6. Is f6 really superior to Be6? If so why? >*/
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