Search found 250 matches

by Allard Siemelink
Fri Oct 21, 2011 7:04 pm
Forum: Computer Chess Club: General Topics
Topic: Test position: Kramnik-Polgar, mate in 45
Replies: 12
Views: 3319

Re: Test position: Kramnik-Polgar, mate in 45

the current development version of Spark agrees within a minute: [17/38] 6.100 7887k +500# Nd6 Re7 [17/38] 11.092 14794k +16# Nd6 Bxg2+ Bxg2 Bxd6 a7 Qc8 Qxd6 f3 Bxf3 Qe6 a8=Q Rxa8 Bxa8 g5 Qd8+ Kh7 Qh8+ Kg6 Qg7+ Kf5 h3 Qe7 Qh7+ Kf4 Rf1+ Ke3 Rf3+ Kd2 Qd3+ Ke1 Rf1+ [17/38] 14.212 18968k +16# ok/5.7 [18...
by Allard Siemelink
Sun Oct 16, 2011 10:04 pm
Forum: Computer Chess Club: General Topics
Topic: Spark 2.0 Leiden 2011 ?
Replies: 10
Views: 6033

Re: Spark 2.0 Leiden 2011 ?

Hi Frank,

Since I am currently quite busy with other things, it'll probably
be sometime in December before the next version will be released.
Since I do not expect it to top the ratings lists, it will be freely available.
Best regards,

-Allard
by Allard Siemelink
Wed Mar 02, 2011 11:52 am
Forum: Computer Chess Club: General Topics
Topic: True Legend
Replies: 30
Views: 9111

Re: True Legend

Rybka is by far the best engine in this position as it finds g6!! very fast. Houdini and Critter both want to play fxg7 for a very long time. Spark, single threaded, needs ~5 seonds: [10/26] 1.389 1463k -655 Nfd2 g6 fxe7 Nxe7 Rf6 Nf5 Kh1 Qb7 Ba3 Rfc8 Bc5 [10/26] 1.513 1630k -655 ok/2.4 [11/26] 1.52...
by Allard Siemelink
Sun Feb 27, 2011 3:16 pm
Forum: Computer Chess Club: General Topics
Topic: Nice sacrifice by Houdini in 5min Blitz!
Replies: 9
Views: 2605

Re: Nice sacrifice by Houdini in 5min Blitz!

~12 seconds for Spark, single threaded [13/20] 0.905 1122k 58 Bc3 a4 Nd4 Qc4 Bb4 Nc5 Bxc5 bxc5 Nc6 Bc7 Ne7+ Kh8 Nxc8 Rfxc8 Qd3 Qxd3 Rxd3 [13/26] 1.544 2069k 58 ok/3.2 [14/26] 1.809 2460k 54 Bc3 a4 Nd4 Qc4 Bb4 Rd8 Be7 Re8 Qb4 Qxb4 Bxb4 Nf6 Nxf6+ gxf6 Nc6 Bb7 Nxb8 Rexb8 [14/36] 2.574 3670k 54 ok/1.8 [...
by Allard Siemelink
Tue Feb 15, 2011 10:33 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: frcperft released
Replies: 8
Views: 1920

Re: frcperft released

Could you add also a perft for spartan chess ? :) We really need chess engines for that and it would be good if you can make bright or spark play spartan. Rules here http://www.spartanchessonline.com/ . Piece movements are different for spartan pieces. Aside from the issue of two kings , the implem...
by Allard Siemelink
Tue Feb 15, 2011 10:27 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: frcperft released
Replies: 8
Views: 1920

Re: frcperft released

Hi Allard I am probably wrong but isn't frc chess same as standard except for the opening position. In which case I belive your old iperft should give the same result ? Yes, FRC chess is a superset of standard chess and the perft counts of the opening position should be exactly the same. However, i...
by Allard Siemelink
Mon Feb 14, 2011 10:50 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: frcperft released
Replies: 8
Views: 1920

frcperft released

As the name implies, frcperft is a perft program for Fischer Random Chess. Features: - full legal move generation - bulk counting in leaf nodes - bitboards - magic move generation by Pradu Kanan Example output for the opening position (corei7@2600Mhz, with SSE4.2): rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP...
by Allard Siemelink
Sun Jan 16, 2011 12:21 am
Forum: Computer Chess Club: General Topics
Topic: Yet Another Mate Solving Test
Replies: 32
Views: 6580

Re: Yet Another Mate Solving Test

Thanks, I'll look into it.
by Allard Siemelink
Sat Jan 15, 2011 6:56 pm
Forum: Computer Chess Club: General Topics
Topic: Yet Another Mate Solving Test
Replies: 32
Views: 6580

Re: Yet Another Mate Solving Test

So, I have been making some improvements for the next release. And maybe you could also reduce your compiler optimization settings a bit - your Spark 1.0 doesn't even run on a P4! Or should we throw away all our older computers? :( Thanks, I wasn't aware of that. I'll supply a 'generic' single core...
by Allard Siemelink
Sat Jan 15, 2011 5:58 pm
Forum: Computer Chess Club: General Topics
Topic: Yet Another Mate Solving Test
Replies: 32
Views: 6580

Re: Yet Another Mate Solving Test

Spark 0.4 has been reported to be better at deep mate finding. So, I have been making some improvements for the next release. With these improvements, the development version now finds 56 mates <=11 on this test set (30s/position, corei7@2500, 1 thread, 32Mb hash) btw, Spark thinks position 91 is a ...