CCRL 40/4: Delfi 5.1 is 50 points above Delfi 5.0

[Kirill Kryukov]

We recently finished running some blitz gauntlets for Delfi 5.1. The result is +50 ELO points over Delfi 5.0 - a great step forward! (Though please be aware of possible statistical error affecting this number).

This improvement takes Delfi to #7 place among free single-CPU engines:

Code: Select all

  Rank              Engine                ELO   +    -   Score  AvOp  Games
     1 Rybka 1.0 Beta 64-bit             2933  +25  -24  76.3% -189.3   672
     2 Toga II 1.2.1a 32-bit             2858   +9   -9  48.8%   +5.5  5029
     3 Spike 1.2 Turin                   2827   +8   -8  46.7%  +21.9  5981
     4 Naum 2.0 32-bit                   2799   +9   -9  48.0%   +8.3  4609
     5 Glaurung 1.2.1 32-bit             2755   +9  -10  40.6%  +67.7  4533
     6 Scorpio 1.91 (5-men-egbb)         2732  +20  -21  50.4%   -4.2   804
>>>  7 Delfi 5.1                         2727  +23  -23  47.3%  +20.3   664
   8-9 Alaric 0704                       2716  +28  -28  52.1%  -14.7   420
   8-9 Pro Deo 1.2                       2716  +14  -14  43.1%  +49.7  1821
    10 Slow Chess Blitz WV2.1            2713  +10  -10  41.5%  +62.7  3906
    11 Zappa 1.1 64-bit                  2712  +19  -20  46.3%  +25.3   897
    12 Pharaon 3.5.1                     2701  +14  -14  37.0%  +95.6  1918
    13 WildCat 7                         2699  +14  -14  47.1%  +21.4  1758

Though Delfi still remains #4 open source single-CPU engine - slightly behind Glaurung and Scorpio, according to our current results.

Free Single-CPU rating list and cross-table (my version)

All results of Delfi 5.1

Comparison of Delfi 5.1 with 5.0

Great work by Fabio Cavicchio! (Especially considering that the source is open)

Best,
Kirill