Stockfish 190826_dll_fix

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Dann Corbit, Harvey Williamson

Forum rules
This textbox is used to restore diagrams posted with the [d] tag before the upgrade.
Post Reply
Posts: 260
Joined: Thu Jun 05, 2014 12:14 pm
Location: Iran
Full name: Mehdi Amini

Stockfish 190826_dll_fix

Post by Look » Wed Sep 25, 2019 4:05 pm


What is the description of "Stockfish 190826_dll_fix" playing in TCEC S16 ?

User avatar
Eelco de Groot
Posts: 4278
Joined: Sun Mar 12, 2006 1:40 am
Location: Groningen

Re: Stockfish 190826_dll_fix

Post by Eelco de Groot » Wed Sep 25, 2019 4:19 pm

The Stockfish binary sent in for TCEC was using a Windows dll ("dynamically linked library") that turned out to have a bug. The bug was somewhat noticed before by CoffeeOne in Stockfish team but it was not realized it was in the dll. Stockfish became unresponsive twice. If it had had three hangs it would have been disqualified, but apparently we were lucky and we can continue to the next round.

This version is playing I believe in a bonus round were the dll has been replaced with an older but correct version of the dll.
The Tcec 'Bonus' currently going on is with the same binary but the dll replaced ... and doing fine without any hang ...
Kiran Panditrao
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan

Post Reply