Author: Dann Corbit
Date: 11:16:31 11/13/02
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 - -
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 - -
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 - -
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 - -
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 - -
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 - -
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 - -
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 - -
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 - -
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
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 - -
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?
*/
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.