Stockfish 1.6

[Werner]

Thanks
Marco and Joona !

wish you too a Merry Christmas and Happy New Year !

Werner

[Nimzovik]

KEWL!!!!!!!

[meschle]

Thanks marco and team!

running a quick tourni against rybka 64 bit 1 cpu - seems impressive so far

[Han Chengye]

Thanks for this new release. learn a lot from the source.
And I have a downloading problem for same reason

[Hart]

Thanks a lot! I am very impressed with the improvement I have seen so far.

Merry Christmas!

[swami]

Stockfish 1.6
by Marco Costalba/Tord Romstad/Joona Kiiski, Europe.

Strategic Test Suite Conditions:

Arena GUI
10 seconds per position
800 positions
Core2Quad 32 bits, Q6600, 2 GB RAM, 2.4GHZ
Engine uses 155 Mb Hash.

Subject-wise Scores:

STS (v1.0) - Undermining:
83/100, Grade: A+

STS (v2.0) - Open Files and Diagonals:
82/100, Grade: A+

STS (v3.0) - Knight Outposts/Centralization/Repositioning:
80/100, Grade: A+

STS (v4.0) - Square Vacancy:
82/100, Grade: A+

STS (v5.0) - Bishop vs Knight:
78/100, Grade: A

STS (v6.0) - Re-Capturing:
78/100, Grade: A

STS (v7.0) - Offer of Simplification:
74/100, Grade: A-

STS (v8.0) - Advancement of f/g/h Pawns:
61/100, Grade: B

Overall Performance:

Total Score: 618/800

Overall Average: 77.25 %

Grade: A

Regards,
Swami

[Hart]

My results are phenomenal. Versus Shredder 12 and RobboLito 0.085e4 x64 at CCRL 40/4 time controls I am showing an improvement of +100 Elo! However, with less than 200 games and confidence intervals still close to 50 I cannot yet draw any meaningful conclusions. I can say I'd be very surprised if the actual improvement turns out to be less than 40 Elo.

[kingliveson]

My results are phenomenal. Versus Shredder 12 and RobboLito 0.085e4 x64 at CCRL 40/4 time controls I am showing an improvement of +100 Elo! However, with less than 200 games and confidence intervals still close to 50 I cannot yet draw any meaningful conclusions. I can say I'd be very surprised if the actual improvement turns out to be less than 40 Elo.

For me, anything over 30 ELO improvement is great.

[Hart]

Code: Select all

Rank Name                            Elo    +    - games score oppo. draws 
   1 Rybka 3 64-bit 2CPU              81   26   26   480   67%   -32   43% 
   2 RobboLito 0.085e4 x64            71   21   21   720   63%   -12   44% 
   3 Rybka 3 64-bit                   52   25   25   480   63%   -32   46% 
   4 Stockfish 1.6 64-bit             -5   35   35   240   46%    17   45% 
   5 Deep Shredder 12 32-bit OA On   -38   21   21   720   43%     6   40% 
   6 Naum 4 64-bit                   -57   23   23   600   39%    12   43% 
   7 Stockfish 1.5.1 64-bit         -103   24   24   600   31%    22   38% 

98 Elo improvement after 240 games only playing S12 and RL. Keep in mind that SF 1.5.1 performed worse than would be expected against these two opponents for their actual rating difference so 98 is probably on the low side:

Code: Select all

   7 Stockfish 1.5.1 64-bit         -103 240.0 (73.0 : 167.0)
                                         120.0 ( 29.0 :  91.0) RobboLito 0.085e4 x64            71
                                         120.0 ( 44.0 :  76.0) Deep Shredder 12 32-bit OA On   -38

   4 Stockfish 1.6 64-bit             -5 240.0 (111.5 : 128.5)
                                         120.0 ( 45.5 :  74.5) RobboLito 0.085e4 x64            71
                                         120.0 ( 66.0 :  54.0) Deep Shredder 12 32-bit OA On   -38
 

Using cutechess-cli with: -resign 3 500 -repeat -draw 120 10
Ponder=false, Threads=1, No table/shredder-bases, Rybka's "Contempt Play"=0
Time control is adjusted to CCRL 40/4.

[mcostalba]

Thanks for this new release. learn a lot from the source.
And I have a downloading problem for same reason

Perhaps is the _same_ reason of many people from China

Anyhow I have setup a package with sources only here:

http://www.mediafire.com/?nudxg2egmzy

If you have still probkems then write me by private message your email address, I will send you directly.