jdart wrote:IMO this is not a great test position because you can get Nh4 as the best move w/o seeing it is winning. Arasan dev version, 4 cores:
Code: Select all
Arasan 18.0 Copyright 1994-2015 by Jon Dart. All Rights Reserved.
test \chess\temp\nh4.epd 600 -v
found 5-man Nalimov tablebases in directory c:\chess\tb
bm Nh4
21 12.25 Nh4 +0.00 49845783
22 16.85 Nh4 +0.00 69758072
23 23.02 Nh4 +0.00 96525734
24 47.53 Nh4! +0.19 197527749
24 77.52 Nh4 +0.02 320873837
25 114.58 Nh4! +0.21 473559983
25 145.65 Nh4! +0.58 596695998
25 308.27 Nh4 +0.67 1235981684
26 405.08 Nh4 +0.85 1619089976
27 420.30 Nh4! +1.04 1679204883
27 486.47 Nh4! +1.42 1937212234
3.97M nodes/second.
0 tablebase probes, 0 tablebase hits
113488 splits, average thread usage=3.94
result: Nh4 score: +1.42 ++ solved in 0.55 sec. (1.73M nodes
Nh4 Rbe8
[D] q1r1k2r/1b3pp1/p3pn2/P1b5/1pN1P2p/3B1P2/1P2Q1PP/R1B2R1K b k -
Engine: Arasan 18.0 (2048 MB)
by Jon Dart
26.01 1:40 +0.49 1...Qb8 2.e5 Nd5 3.Bd2 Be7 4.h3 Rd8 5.Rfd1 Rd7 6.Bc2 Bc6 7.Rac1 Rd8 8.Bd3 Ba4 9.Re1 Bb5 10.Red1 (831.200.431) 8309
27.01 2:41 +0.31++ 1...Nh5 (1.370.829.969) 8478
27.01 3:00 -0.06++ 1...Nh5 2.Be3 (1.525.402.690) 8450
27.01 3:12 -0.81++ 1...Nh5 2.Be3 (1.622.792.936) 8446
27.01 3:15 -2.31++ 1...Nh5 2.Be3 (1.651.691.627) 8441
27.01 10:39 -2.68 1...Nh5 2.g4 hxg3 3.h3 e5 4.Kg2 Qb8 5.Rh1 Rc6 6.Bd2 O-O 7.Nb6 Rd8 8.Nd5 Rcd6 9.Bc4 Rg6 10.Rhd1 Qc8 11.Bd3 Re8 12.Nb6 Qd8 13.Bxa6 Bxa6 14.Qxa6 Qh4 (5.451.423.860) 8525
28.01 11:29 -2.68 1...Nh5 2.g3 (5.864.311.141) 8502
29.01 11:39 -2.87++ 1...Nh5 2.g3 (5.941.093.800) 8496
29.01 12:12 -2.76 1...Nh5 2.g3 hxg3 3.h3 e5 4.Kg2 Qb8 5.Rh1 Rc6 6.Bd2 O-O 7.Nb6 Rd6 8.Nd5 Qd8 9.Bc4 f5 10.Rhf1 Qh4 11.Rac1 Kh8 12.Bb3 Rc8 13.Bc4 g6 14.Rfd1 Nf4+ (6.227.884.556) 8499
30.01 14:28 -2.84 1...Nh5 2.g3 hxg3 3.h3 e5 4.Kg2 Qb8 5.Bc2 O-O 6.Rd1 Qc7 7.Bd2 Bd4 8.Bd3 Rfd8 9.Rac1 Qd7 10.Bg5 Qe6 11.Nb6 Bxb6 12.axb6 Rxc1 13.Bxc1 Qxb6 14.Be3 Nf4+ (7.437.255.903) 8559
31.01 15:26 -2.66 1...Nh5 2.g3 hxg3 3.h3 e5 4.Kg2 Qb8 5.Bc2 O-O 6.Rd1 Qc7 7.Bd2 Bd4 8.Bd3 Rfd8 9.Rac1 Qd7 10.Bg5 Qe6 11.Nb6 Bxb6 12.axb6 Rxc1 13.Bxc1 Qxb6 14.Be3 Nf4+ (7.911.566.444) 8540
no chess program was born totally from one mind. all chess programs have many ideas from many minds.