Article last updated: June 28, 2015
► CHECK NEW TOURNAMENT: Stockfish 6 vs Komodo 9
32 bit Single CPU Chess Engine Competitions
I am a big chess fan and also like some chess engines out there. Artificial Intelligence in this field is constantly improving and today all top chess engines have a stronger ELO rating than top grandmasters like Magnus Carlsen (Norway) and Viswanathan Anand (India).
But, why this article? In the era of 64-bit computing and multi-processor computer systems with multi-core CPUs there are many top chart lists of engine ratings with score sheet tables and all, but when it comes to a traditional 32-bit computing, those are much harder to find. This is why I have decided to test some top engines at the time of this writing (January 2015) plus some well-known for reference, and see how all compare on an old budget laptop with a single core processor.
32 bit Single Processor Single Core Chess Engine Tournament Score TOP Chart Results
Download results table as image file (PNG format)
|4||Deep Rybka 4.1 w32||6,0/16||=0=0||0000||=0=0||1111||27,50|
* SB = Sonneborn Berger score
0 … loss (0 points)
= … draw (0,5 points)
1 … win (1 point)
Total Games Played: 40 (4 games between each engine / total of 16 games per engine)
Maximum Theoretical Score: 16 points (16 wins)
Level: 3 seconds per move (fixed time)
Hardware: Intel(R) Celeron(R) M CPU 430 @ 1.73GHz with 1,9 GB Memory
Operating System: Microsoft Windows XP Professional Service Pack 3 (Build 2600) 32 bit
The above chart contains Crafty and Deep Rybka which are not in the top three, but present purely as a control-group and comparison engines.
Now we can compare this with the current (actual) CCRL 40/40 Top Chart from computerchess.org.uk website and see that there are big differences here: when it comes to 32-bit SC-SP arena Komodo is the 3rd and StockFish is still 1st!
To stand to our claims and increase the credibility of the article, we provide a PGN file of the entire tournament for download (file can be opened with Notepad or similar text editor): StockFish-Houdini-Komodo-Rybka-Crafty Chess Engines Tournament (click to download zip archive)