What happen in 2009

The end of the year arrive, so it’s time to look what happen in 2009 about the suicide variant and in SuicideChess project.

When 2009 started, Azor was still in version 10, and now it’s the version 16.8 that’s currently running. Many things have improved between these versions : en-passant rule, auto-update, speed increase, better connexion’s stability and EGTB capacities. I’m impress how much azor improve this year.

About the website, end game section have appear, to help players with suicide end game. That’s not the only section being created, the blog and forum too! In the opening book section, it’s now possible to add comments about a position. And since few, it’s now possible to register / login on the website.

About the opening book, it increase a lot this year. At the start of the year, there was about 8.5 millions calculated positions in the database; at the end of the year, it will be about 37.5 millions. So 29 millions positions have been compute this year. Thanks to everyone who ran/run an azor. To give you a idea, to compute 29 millions positions on some cloud computing program like Amazon EC2, that would cost me more about 6000$.

At the begin of the year, I have complete the transfer the hosting of the website from my home computer on a real web server, host by SliceHost.

All my Java source code for my project have been release open-source this year too.

About Suicide variant in general, you have seen new computers accounts on FICS like nakshatra. And StayAlive have now a way better opening book, than before, he almost reach the 2600+ rating in suicide. The Cyanide Sandwiches tourney have been moved from Tuesday to Wednesday.

This is what I remember so far… oh what a year ! 🙂
Hoping to see what will happen in 2010.

Happy New Year all!


Open-source suicide chess engine

Currently, I know several suicide chess engine that have been released under open-source license.

Nilatac and Catnail have been finally release under GPL v2. At least you can now see how he’s doing his search. Unfortunately, his development is frozen since 2004. I wonder if any C programmer have made / try to use his code, maybe to release a stronger engine. You can find his source code there

Sjeng is a strong chess engine, it play Suicide, but others variants and regular chess. Variants are support up to version 11.2 . Sjeng became a commercial program sinice version 12.13. IMHO that’s bad, I wonder how strong Sjeng became after, specially in suicide variant. You can download the program and the source code there

Recently I talk about the nakshatra engine, in my How to win series. I discover after that, it’s a open-source engine. The good news is that the programmer is still working on it. His last commit was only 12 hours ago. On his site, it look like he want to support regular chess too. You can see his website there

And the last one, my own suicide chess engine, Nessegrev. Unfortunately, I think that in the current state of the source code, Nessegrev didn’t work well, still some bug in it. But I still working on it 🙂 You can take a look to the source code there

If you know any others open-source suicide engine please let me know, so I’ll be able to add them here.

How to win against (part 1)

Here the first part on how to win against a specific suicide chess engine.

No I won’t give a winning path, that you can re-use to win, but I’ll give some tips.

Today, suicide chess engine is nakshatra

nakshatra is a new suicide chess engine on FICS. This engine have been created by gpbhat. nakshatra is doing good, currently his rating is 2020. According to his finger’s note, he have a small opening book and no EGTB.

I played about 10 games against him, that’s not a lot but I already figure few tips to win. Even if his opening book is small, I didn’t saw any blunders in the opening. So first thing to do is avoid to play a lost opening. During middle game, try to keep your pieces, because since he didn’t have EGTB, he sacrifice his pieces too quickly. In most of my games against him lead to the endgame where nakshatra have only a pawn left, and I still have my king, a rook and some other pieces. In end game, it’s important to have more pieces than your opponent specially when he have only a pawn. During the time that he push his pawn forward, I have time to place my pieces / promote my pawns to be sure that any of his promotion will be lost. To be able to do that, you need to know well your endgame

Keep in mind that nakshatra is still at version 0.0, so I hope, he’ll improve in near future. I don’t know in which language nakshatra is coded or when he’ll have EGTB