Search found 36 matches

by Harm Jetten
Tue May 21, 2019 23:44
Forum: Draughts, Computer, Internet
Topic: Moby Dam
Replies: 61
Views: 26896

Re: Moby Dam

Hello all, just a heads-up that a new release of Moby Dam is available. This is the version that I used at the tournament in Amersfoort on May 19. The changes are minor, I don't expect a noticeable increase in playing strength. Enjoy! Edit - Here is the link: https://hjetten.home.xs4all.nl/mobydam/m...
by Harm Jetten
Tue Jul 05, 2016 18:09
Forum: Draughts, Computer, Internet
Topic: Moby Dam
Replies: 61
Views: 26896

Re: Moby Dam

A new version of Moby Dam is now available for your perusal. This is the version that I used past weekend in the Computer Olympiad 2016. Go to http://hjetten.home.xs4all.nl/mobydam/mobydam.html See the bottom of the page, "second release." The zip file contains the source as well as a 64-bit Windows...
by Harm Jetten
Wed Nov 18, 2015 01:23
Forum: Draughts, Computer, Internet
Topic: Moby Dam
Replies: 61
Views: 26896

Re: Moby Dam

Hmm, I imagine WebSocket to be suitable for a draughts GUI in a web browser, talking to an engine on a server. On the server side you would need a web server that sends the GUI Javascript/HTML5 code to the browser and then keeps a WebSocket channel open to communicate. The web server could connect t...
by Harm Jetten
Tue Nov 17, 2015 23:46
Forum: Draughts, Computer, Internet
Topic: Scan
Replies: 164
Views: 66154

Re: Scan

Catherine, I am not aware of any problems with multi-part captures, either with Scan or Dam 2.2.
If you saved the game or made a screenshot please post them to the board or mail it to me, so I can investigate.
by Harm Jetten
Thu Aug 20, 2015 21:27
Forum: Draughts, Computer, Internet
Topic: Scan's games at the 2015 Olympiad
Replies: 11
Views: 5878

Re: Scan's games at the 2015 Olympiad

Jaap Bus analyzed the Scan - Moby Dam game at his blog, see http://endgamesandmore.blogspot.de/2015/08/a-very-interesting-game-of-computer.html . His conclusion is that 26... 11-17 was not fatal, Moby Dam could still have reached a draw. At move 33... instead of 12-18 it should have played 15-20 and...
by Harm Jetten
Thu Jul 23, 2015 23:43
Forum: Draughts, Computer, Internet
Topic: Scan
Replies: 164
Views: 66154

Re: Scan

Or, instead of adding that line, you can add ws2_32.lib to the project configuration properties,
All Configurations, Linker - Input - Additional dependencies.
(At least, that's what I did in VS 2013).
by Harm Jetten
Thu Jul 23, 2015 12:40
Forum: Draughts, Computer, Internet
Topic: Scan
Replies: 164
Views: 66154

Re: Scan

The link-time optimization option is present (-flto), so it might be good to add -O2 to the LDFLAGS as well.
by Harm Jetten
Thu Jul 23, 2015 12:11
Forum: Draughts, Computer, Internet
Topic: Scan
Replies: 164
Views: 66154

Re: Scan

From a Google search I get the impression that it's a bug in gcc 4.8.
There is mention of a workaround.
Try to make the Makefile section look like this:

Code: Select all

# general

CXX      = g++
# CXXFLAGS = 
LDFLAGS  = -L. -Wl,--no-as-needed -pthread
LIBS     = -lm -lpthread
by Harm Jetten
Thu Jul 23, 2015 11:51
Forum: Draughts, Computer, Internet
Topic: Moby Dam
Replies: 61
Views: 26896

Re: Moby Dam

gcc versions before 4.9 don't recognize the -march=nehalem option.
You can replace it in the Makefile by either -march=native (optimizing for your particular processor model)
or by -mpopcnt.
by Harm Jetten
Tue Jul 21, 2015 13:22
Forum: Draughts, Computer, Internet
Topic: Scan
Replies: 164
Views: 66154

Re: Scan

I assume that you leave the dxp settings in scan.ini unchanged. When you run Scan in DXP mode, it will say 'waiting for a connection'. Then start the GUI. For the following I assume Dam 2.2. Choose menu Game - DamExchange - Make connection. Enter the computername where Scan is running (or leave blan...
by Harm Jetten
Tue Jul 21, 2015 11:31
Forum: Draughts, Computer, Internet
Topic: Protocols and tools
Replies: 42
Views: 19171

Re: Protocols and tools

Wieger, Scan has been released (see the Scan topic).
It can indeed be compiled and run under Linux as well.
by Harm Jetten
Tue Jul 21, 2015 11:22
Forum: Draughts, Computer, Internet
Topic: Scan
Replies: 164
Views: 66154

Re: Scan

Krzysztof, by default Scan starts in text mode. To make it start in DXP mode, you should create a shortcut for scan.exe and add the word dxp to the end of the Target line (Element docelowy). When Scan starts up, it reads the scan.ini configuration file. For example if you have installed the 5 and 6 ...
by Harm Jetten
Mon Jul 20, 2015 10:56
Forum: Draughts, Computer, Internet
Topic: Scan
Replies: 164
Views: 66154

Re: Scan

Krzysztof, that is a tricky problem. You could try the following: Do you have the folder C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\redist\x64\Microsoft.VC120.CRT ? If yes, copy the DLL files msvcp120.dll and msvcr120.dll in it to the scan_20 folder. If no, search for these names in the ...
by Harm Jetten
Sun Jul 19, 2015 23:18
Forum: Draughts, Computer, Internet
Topic: Scan
Replies: 164
Views: 66154

Re: Scan

Krzysztof,

Try installing the latest Redistributable Package for Visual Studio 2013: vcredist_x64.exe at
https://www.microsoft.com/en-us/downloa ... x?id=40784
by Harm Jetten
Fri Jul 10, 2015 18:46
Forum: Draughts, Computer, Internet
Topic: Scan's games at the 2015 Olympiad
Replies: 11
Views: 5878

Re: Scan's games at the 2015 Olympiad

When I try to reproduce the search from this position, it takes much more time and gives different best moves at various depths. It's missing TT information built up during previous moves and pondering.
You can find the time allocation in function set_budget() in search.c.