The Week in Chess

Friday, April 25, 2014

Stockfish 14042408 x64 vs. Houdini 4 Pro x64 - Fast Blitz Match 10secs + 500ms

It's time once again to test the latest of Stockfish with version 14042408 released yesterday, April 24, 2014. The release was a series of 4 patches applied in 1 day such as:
   - Remove RookOn7th and merge values into psqt
   - Remove penalty for knight when few enemy pawns
   - Shuffle movepicker score
   - Correctly apply previous patch

The purpose of the test is to check for strength consistency, no regression and duel with Houdini in very short time control of sub-second per move match where Houdini is considered supreme by chess engine experts. The tournament conditions are indicated in the match statistics below in a 200 round combat

After more than 5 hours of continuous fight, Stockfish 14042408 emerged as the victor where it scored 112 points out of 200 games or 56% vs 44% result. Other testers may have different results, but this test showed that Houdini is no longer the undisputed king in fast Blitz match. Today, based on the match results, I declare Stockfish as the new Chess Engine Blitz King in the Owl Chess Engines Rating List.

Here is the match statistics:


Stockfish 14042408 x64 vs. Houdini 4 Pro x64 - Match 200R 10secs + 500ms
RankEngineScoreStHoS-B
1Stockfish_14042408_x64112.0/200· ·· ·· ··66-42-92 9856.00 
2Houdini 4 Pro x64 88.0/20042-66-92· ·· ·· ·· 9856.00 


200 games played / Tournament finished

Tournament start: 2014.04.24, 04:48:20
Latest update: 2014.04.24, 11:11:13
Level: Blitz 0:10/0.5
Hardware: AMD Phenom(tm) II X4 945 Processor with 1.8 GB Memory
Operating system: Windows 7 Ultimate Professional Service Pack 1 (Build 7601) 64 bit
Table created with: Arena 3.5

Download the match result PGN games here:

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