The Week in Chess

Sunday, April 28, 2013

Stockfish 130427 beat Houdini 3, Again!...

To beat Houdini 3 in a long match seems not an impossibility.  I had a quad core AMD where Houdini 3 is beaten by Stockfish development versions twice in 100 games matches successively. It is also the same computer mostly used where Houdini 3 topped the Owl Chess Engines Rating List with 94 ELO points margin over Stockfish, the #2 in rank.

These two chess giants are currently locked in a 48 game battle with long time control at +Martin Thoresen's live superfinal. As of this writing, Houdini leads with just 1 point in 7 games where 6 games were draws.   Houdini's extreme strength seems to be blunted with the longer time control and the use of 16 core computer. This brings to mind one of the early lessons I learned, that "chess games played correctly will end in draws".   So, with the long time control and super processing resources, there is a big probability that the chess engines will always find the correct move most of the time, therefore draws will happen frequently.  The longer the time control and the use of super computers will produce seemingly "dull" games between two chess engines with almost even strength.

And here is another speculation that Houdini will be beaten by Stockfish:

Stockfish 130427 Tests
1Stockfish 130427 x64 m10i pgo112.0/200· ·· ·· ··
2Houdini 3 Pro x64 44.5/10030-41-29
3Stockfish 130419 x64 msc pgo 43.5/10011-24-65

200 games played / Tournament finished

Tournament start: 2013.04.27, 17:09:01
Latest update: 2013.04.28, 03:18:41
Level: Blitz 0:10/1
Hardware: AMD Phenom(tm) II X4 945 Processor 3000 MHz with 4 GB Memory
Operating system: Microsoft Windows XP 64 Bit Professional Service Pack 2 (Build 3790)
Table created with: Arena 3.0

Stockfish 130427 x64 m10i pgo was compiled the same date of release on April 27, 2013 with Visual Studio 2010 using Profile Guided Optimization and Intel IPP, MKL, TBB libraries.

Stockfish 130419 was built similary with the same build options above and was the chess engine that beat Houdini 3 the first time.  This time it was beaten by the latest Stockfish 130427 build with 13 points deficit.

Houdini 3 Pro lost to Stockfish 130427 with 11 points difference.  This is another  random result that should not be taken very seriously.  Chess engines do not behave consistently in any computer I've used, so the results may also be different when other testers will try the compilation that I produce.

Download the Stockfish 130427 x64 m10i pgo chess engine that beat Houdini 3 here.

Download the computer chess engines games tournament test here.


  1. can you please compile stockfish 130427 for w32 vesion? thx

  2. hi..Im student from Informatics engineering, this article is very informative, thanks for sharing :)


Chessdom News