Alaric

Alaric

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This blog is describing the development of Alaric.

Alaric @ WCRCC tournament

blogPosted by Peter Fendrich Tuesday, July 24 2007 01:39:46

There was a World Computer Rapid Chess Championships played at ICC 21-22 July

Alaric ended up at the 6th place out of 41 engines!

All the results can be found here (look for TerraPi).

This is a really encouraging result for Alaric smiley taking to account that all engines above Alaric and some of them below are all multi-CPU engines. Alaric was playing with only one processor.
The book from G√ľnther Simon worked fine. There were some black positions that Alaric didn't know how to handle and the last game vs Hiarcs was a win much thanks to this book.
In general the tourney was excellent handled despite som small incidents. For instance engines not online when the round was to start and that Rybka didn't kibitz (display) the thinking lines.
Kibitzing was one of the rules for this tourney.
Rybka was the winner this time and in the last round Hiarcs missed the playoff by losing to... right Alaric!
A pity of course, a playoff between Rybka and Hiarcs would be a great event! But I can't say that I am extemely sorry smiley

Let's take look at the game against Quark in round 12. Alaric i black:

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 h6 6. Bh4 Nbd7 7. e3 Ne4 8. Bxe7 Qxe7 9. Rc1 Qb4 10. Qc2 Ndf6 11. Bd3 Nxc3 12. a3 Qa4 13. Qxc3 dxc4 14. Bxc4 O-O 15. O-O Bd7 16. Rfe1 Rac8 17. e4 Bc6 18. Qd3 Rfd8 19. h3 Qa5 20. b4 Qb6 21. Kh1 a6 22. Rc2 Rd7 23. Rd2 Rcd8 24. Kh2 g6 25. g3 Ba4 26. Qc3 Kg7 27. Bd3

Blog Image

Alaric evaluates this position as equal while Quark says something like 1 pawn up.
Quark values mobility high and Alaric just "notice" it. A few moves later Alaric can "see" the danger with evaluation about -0.5 and at that time Quark evaluates itself to 2 pawns up.
Quark won of course.
I have to study this more. Maybe there is something broken with Alaric's mobility evaluation?

27...Bc6 28. Bc2 h5 29. a4 Re7 30. Ne5 Be8 31. f4 Qa7 32. g4 hxg4 33. hxg4 Kf8 34. Rh1 Ng8 35. g5 Qb6 36. Kg1 f6 37. a5 Qa7 38. gxf6 Nxf6 39. Rh8+ Ng8 40. Kh1 Rg7 41. Qh3 Bf7 42. Qh4 Qxd4 43. Qxd8+ Qxd8 44. Rxd8+ Be8 {Alaric resigns}
1-0

This was the only lost game to a single CPU engine.
Ohh my, I have to start with SMP coding for multiple CPU's in order to keep up...

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