DiscoCheck

on Sun Feb 26, 2012 6:00 am by · on Sun Feb 26, 2012 6:00 am by

DoubleCheck 2.6

- eval_loose: penalise loose pieces a little.
- introduced an array B->st->attacks[color][piece] to simplify and speedup additional eval code.
- use unsigned i/o int wherever relevant.
- faster interfacing code when Verbose = false.

http://wbec-ridderkerk.nl/html/details1/DoubleCheck.html

on Sun Feb 26, 2012 6:56 pm by · on Sun Feb 26, 2012 6:56 pm by

DoubleCheck 2.6 JA
Windows/Linux/Android 64/32

Download:
http://dl.dropbox.com/u/5047625/doublecheck-26-ja.zip
Mirror:
http://cl.ly/EWgL/doublecheck-26-ja.zip

on Fri Mar 09, 2012 5:39 pm by · on Fri Mar 09, 2012 5:39 pm by

DoubleCheck 2.7 (Windows-x64, Linux-x64 and sources included!)
http://wbec-ridderkerk.nl/html/details1/DoubleCheck.html

- added rook on open file bonus.
- removed stdin unbuffering.
- removed the global variable SubPromotion. handle this more tidily via function parameter.
- changed piece values.
- mvv/lva sort in qsearch captures.
- removed RNB promotions in qsearch.
- remove POSIX compile flag (auto detect).

on Sat Mar 10, 2012 6:01 pm by · on Sat Mar 10, 2012 6:01 pm by

DoubleCheck 2.7 JA
Windows/Linux/Android 64/32

http://dl.dropbox.com/u/5047625/doublecheck-27-ja.zip
http://cl.ly/EvLG/doublecheck-27-ja.zip

on Sat Mar 17, 2012 7:15 pm by · on Sat Mar 17, 2012 7:15 pm by

DoubleCheck 3.0

- eval command now returns a full breakdown of eval components.
- eval mostly rewritten.
- aspiration windows.
- code cleanup.

http://wbec-ridderkerk.nl/html/details1/DoubleCheck.html

on Wed Mar 21, 2012 2:59 pm by · on Wed Mar 21, 2012 2:59 pm by

DoubleCheck 3.0 JA (updated 21-03-12)

Windows/Linux/Android 64/32

http://dl.dropbox.com/u/5047625/doublecheck-30-ja.zip
http://cl.ly/FCmb/doublecheck-30-ja.zip

on Fri Mar 30, 2012 4:31 pm by · on Fri Mar 30, 2012 4:31 pm by

DoubleCheck 3.1

- futility pruning in quiescent search improved.

http://wbec-ridderkerk.nl/html/details1/DoubleCheck.html

on Sat Mar 31, 2012 10:58 pm by · on Sat Mar 31, 2012 10:58 pm by

DoubleCheck 3.1 JA

Windows/Linux/Android 64/32

http://dl.dropbox.com/u/5047625/doublecheck-31-ja.zip
http://cl.ly/FSwK/doublecheck-31-ja.zip

on Mon Apr 09, 2012 4:59 pm by · on Mon Apr 09, 2012 4:59 pm by

DoubleCheck 3.2

- eval: increase rook on (semi)open file bonus, when on the enemy's king file.
- eval: added a tempo bonus.
- search: margin for eval pruning now increases faster with depth.
- search: fixed my lame razoring code. thanks to Martin Sedlak and Marco Costalba for suggesting this.
- qsearch: divided by 2 the futility margin.
- qsearch: SEE pruning only at non PV nodes.
- qsearch: fixed an error in evasion pruning.
- bench: increased depth of test positions.

http://wbec-ridderkerk.nl/html/details1/DoubleCheck.html

on Wed Apr 11, 2012 4:13 am by · on Wed Apr 11, 2012 4:13 am by

DoubleCheck 3.2 JA

Windows/Linux/Android 64/32

http://dl.dropbox.com/u/5047625/doublecheck-32-ja.zip
http://cl.ly/FjTc/doublecheck-32-ja.zip

on Wed Apr 11, 2012 5:31 am by · on Wed Apr 11, 2012 5:31 am by

Code:: Games Completed = 500 of 500 (Avg game length = 30.132 sec) Settings = RR/32MB/4000ms+200ms/M 700000cp for 7 moves, D 150 moves/EPD:E:\LittleBlitzer\openings.epd(4000) Time = 3802 sec elapsed, 0 sec remaining 1. DoubleCheck 3.2 JA 256.0/500 165-153-182 (L: m=142 t=11 i=0 a=0) (D: r=140 i=25 f=9 s=3 a=5) (tpm=241.2 d=12.8 nps=0) 2. DoubleCheck 3.1 JA 244.0/500 153-165-182 (L: m=162 t=3 i=0 a=0) (D: r=140 i=25 f=9 s=3 a=5) (tpm=241.1 d=12.6 nps=0)

on Fri Apr 20, 2012 2:22 am by · on Fri Apr 20, 2012 2:22 am by

DoubleCheck 3.3 (Windows-x64, Linux-x64 and sources included!)

- eval: added candidate passed pawns.
- tt: generation SF style: todo
- pack move_t into 16 bits: in progress
- board: pack move_t to 16 bits.
- eval: knight and bishop outposts.
- eval: improved passed pawn scoring.

http://wbec-ridderkerk.nl/html/details1/DoubleCheck.html

on Sat Apr 21, 2012 7:23 pm by · on Sat Apr 21, 2012 7:23 pm by

DoubleCheck 3.3 JA

Windows/Linux/Android 64/32

http://dl.dropbox.com/u/5047625/doublecheck-33-ja.zip
http://cl.ly/G1B0/doublecheck-33-ja.zip

on Wed Apr 25, 2012 1:05 pm by · on Wed Apr 25, 2012 1:05 pm by

DoubleCheck 3.4

- tuned king safety weights.
- rewritten and tuned passed pawns eval.

http://wbec-ridderkerk.nl/html/details1/DoubleCheck.html

on Thu Apr 26, 2012 2:37 am by · on Thu Apr 26, 2012 2:37 am by

DoubleCheck 3.4 JA

Windows/Linux/Android 64/32

http://dl.dropbox.com/u/5047625/doublecheck-34-ja.zip
http://cl.ly/G8pX/doublecheck-34-ja.zip