Re: [computer-go] Tesuji solver

I have visited the madlab homepage. I am interested in the lamda-algorithm. I have downloaded the java code. I tried also to download the articel pdf-files. Did not work, diconnected always in between. Probably a problem of my bad server.

I understand the code, but I miss the motivation/the general idea behind the Lamda-value.

Could you please explain this general?. Maybe you could also send me (chrilly@xxxxxxxxxxxxxxxxx) a mail with the most recent (the better one) version of the article attached. Please send only one article, my internet-connection is just 1.8 KByte/sec and usually disconnects after 1MB. If you think that one should read both articles, please send it in 2 Mails seperatly.

Best Regards

Chrilly

-----Ursprüngliche Nachricht-----
Von: Thomas Thomsen <thomas@xxxxxxxxxxxxxxxxx>
An: computer-go@xxxxxxxxxxxxxxxxx <computer-go@xxxxxxxxxxxxxxxxx>
Datum: Donnerstag, 16. September 2004 21:36
Betreff: [computer-go] Tesuji solver

Dear fellow Go programmers,

Over the last years I've been working on a tesuji solver called MadLab (based on the so-called lambda search algorithm). It is now functional enough that I decided to make it available for others to use. More details at www.t-t.dk/madlab (or see rec.games.go for the announcement).

You can read much more about the algorithm etc. on the web pages. What might be of interest to other programmers is that Madlab comes with 997 tesuji problems extracted from real high-level games. These are a mix of normal and double-threat tesuji's, and the problems are available for download (sgf). The quality is very uneven, but some of them are quite amusing. And what is more: the solution given in the files is guaranteed to work. [That is, in the absence of some undiscovered bug in my program :-)]. So the problems might be useful for regressions, testing, etc.

Regarding the strength of my program... well, it depends. For tactical fast-paced problems it seems pretty strong, but don't expect it to solve tsume-go or semeai problems. But it more or less solves the kinds of problems it was aimed at. There are some examples given on the web pages.

That's all for now. Any kind of feedback is most welcome!

-Thomas Thomsen

www.t-t.dk/madlab