Search found 34 matches

by edwardyu
Sat Jan 14, 2017 1:01 pm
Forum: Computer Chess Club: General Topics
Topic: What is the strongest xianqi program available for the pc?
Replies: 21
Views: 3369

Re: What is the strongest xianqi program available for the p

but, ironically, a horse can win against a king whereas two knights cannot!
by edwardyu
Tue Aug 02, 2016 5:22 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: lazy smp using ms vs2015 c++11 std::async
Replies: 5
Views: 1734

Re: lazy smp using ms vs2015 c++11 std::async

Yes, Eychessu is my Xiangqi engine. I have been away from computer chess for sometime and pick it now, Before heard of lazy smp, I have tried using MS VC++ PPL to implement smp with splitting at the PV and non-PV nodes, but the result was worse than single thread (due to the vast overhead of concurr...
by edwardyu
Fri Jul 29, 2016 5:14 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: lazy smp using ms vs2015 c++11 std::async
Replies: 5
Views: 1734

lazy smp using ms vs2015 c++11 std::async

I have just use ms vs2015 c++11 std::async to implement lazy smp for my xiangqi engine. I ran 2-rounds 1'+1" with 3 versions on an Intel i3 (2cores+2HT) under Windows 10:- Final Result: -------------------------------------------------------------------------------- No. 引擎 ELO K ೢ...
by edwardyu
Sat Jul 02, 2016 10:22 am
Forum: Computer Chess Club: General Topics
Topic: Hi Mr Muller, any news for the 2016 Chinese Chess Olympiad ?
Replies: 4
Views: 948

Re: Hi Mr Muller, any news for the 2016 Chinese Chess Olympi

Thanks HG! I don't know if you were aware that a Computer Xiangqi tournament has taken place in China in May 2016. All the strong Chinese Xiangqi engines have participated and 名手(CHESS NADE) has beaten 旋風(CYCLONE) 4-2 in the final to take the champion. Here is the sina ne...
by edwardyu
Sat Jul 02, 2016 8:22 am
Forum: Computer Chess Club: General Topics
Topic: Hi Mr Muller, any news for the 2016 Chinese Chess Olympiad ?
Replies: 4
Views: 948

Hi Mr Muller, any news for the 2016 Chinese Chess Olympiad ?

Just learned from that there will be 3 Chinese Chess programs :-

Chinese Chess 2x 4 rounds ID Program
June 27 1200-1300 chi CHIMO
Mon 1300-1400 HQ HAQIKID
1400-1500 Xie XIEXIEMASTER

Any news or result?
by edwardyu
Mon Aug 19, 2013 10:30 am
Forum: Computer Chess Club: General Topics
Topic: Hiarcs wins 3rd World Chess Software Championship
Replies: 55
Views: 11543

Re: Hiarcs wins 3rd World Chess Software Championship

BTW, what is the difference between WCCC and WCSC ? Hardware?
by edwardyu
Fri Aug 16, 2013 7:23 am
Forum: Computer Chess Club: General Topics
Topic: WCCC 2013 in Yokohama
Replies: 79
Views: 16913

Re: WCCC 2013 in Yokohama

http://icga.uvt.nl/?page_id=631 WCCC 2013 Live games can be followed here: LIVE Live PGN file: LIVE PGN Played games: wccc2013.pgn Report: 20th WCCC.pdf Cross Table # Name Score 1 2 3 4 5 6 1 Junior 6½ – 1½ 11 1. 0. 11 2 Shredder 3½ 0½ – 0. 0. ½½ 11 3 Hiarcs 3½ 00 1. – ½½ 0½ 1. 4 Pandix 5 0. 1. ½½ –...
by edwardyu
Tue Apr 23, 2013 8:33 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Implementation of multithreaded search in Jazz
Replies: 25
Views: 5082

Re: Implementation of multithreaded search in Jazz

Thanks for the detail ! I try to implement lazy SMP (split at the root) usng Microsoft's VS2010 C++ PPL (Parallel Programming Library). I use some code like : parallel_invoke( [&] { Board* spboard; Board spboardref; spboardref = board; spboard = &spboardref; PPL_searchRoot(2, spboard, a...
by edwardyu
Wed Nov 09, 2011 7:36 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Some questions on split points
Replies: 8
Views: 1979

Some questions on split points

1. Does split at root nodes bad? If I search the first root moves, and then splits the remaining root moves to run in parallel, what is the disadvantage of this? 2. Do we split in PV and nonPV nodes? 3. Normally, it is allowed to split after probing the hash AND searching the first move after hashmo...
by edwardyu
Tue Oct 11, 2011 4:04 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: CLOP for Noisy Black-Box Parameter Optimization
Replies: 94
Views: 41052

Re: CLOP - a trial for xiangqi engine

I have tried to optimize the piece values of my xiangqi engines. A preliminary result is as follows :- MAX All Weighted vp 23 win 171 vpr 96 draws 62 vb 52 losses 183 ve 51 games 416 vn 197 95% UCB 0.520105 vc 203 win rate 0.488152 0.869043 vr 462 95% LCB 0.427812 win rate 0.000388618 The win rate 0...