Search found 657 matches

by Joerg Oster
Sun Aug 04, 2019 9:31 am
Forum: Computer Chess Club: General Topics
Topic: RSIF as alternative to armageddon
Replies: 70
Views: 4309

Re: RSIF as alternative to armageddon

If we are to eliminate draws, which is the theme of this thread, then draws either have to be awarded based on some aspect of the position (or game history) or else just arbitrarily awarded to one color. I took from the title, that the elimination of draws was a way of solving ties, without having ...
by Joerg Oster
Fri Jul 26, 2019 8:49 pm
Forum: Computer Chess Club: General Topics
Topic: opposite castling armageddon
Replies: 40
Views: 2875

Re: opposite castling armageddon

I have wondered what would be the simplest rule change to chess that would make it a two-result game (win or loss) while still being roughly fair to both players. In the real chess world this is sometimes done by giving White more time and Black draw odds, but with a few exceptions this has been do...
by Joerg Oster
Wed Jul 03, 2019 8:01 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: DTM50
Replies: 65
Views: 10285

Re: DTM50

I use Nalimov 6-men on the old Samsung 970 EVO 2TB, with my own engine it is fast enough to probe at depth 1 without causing too much slowdown. A few years back I generated 6-men syzygy WDL and DTZ which took 5 days on my old 5960x, however I never came to use it. I still want to try to combine syz...
by Joerg Oster
Fri Jun 14, 2019 9:57 am
Forum: Computer Chess Club: General Topics
Topic: Pre-Release McCain X4
Replies: 22
Views: 2274

Re: Pre-Release McCain X4

Probably needs an aligned allocation. Objects can be different sizes because of the OS and compiler. For instance, with GCC on a 64 bit Linux, long is 8 bytes but on 64 bit windows it is 4 bytes. I didn't even look at the code yet so this is a guess. Strange that an assert was used since it sounds ...
by Joerg Oster
Mon Jun 10, 2019 8:27 am
Forum: Computer Chess Club: General Topics
Topic: OKE - Opening Knowledge Engines
Replies: 94
Views: 7116

Re: OKE - Opening Knowledge Engines

Interesting.
It looks like there is a LOT of room for improvement, in general.
by Joerg Oster
Fri Jun 07, 2019 8:48 am
Forum: Computer Chess Club: General Topics
Topic: Honey-XPro Release
Replies: 59
Views: 9204

Re: Honey-XPro Release

An undocumented feature that you can also combine tactical and multipv - say you want a wider search tactical to 3 ( search as if multipv was set to 8) and you set multipv to see just the best 4 best moves , although it is doing wider searches if was multipv was searched to 8, it will just display ...
by Joerg Oster
Tue Jun 04, 2019 8:48 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: is LVA as in MVV-LVA useless ?
Replies: 9
Views: 1474

Re: is LVA as in MVV-LVA useless ?

I don't see any reason why Stockfish prefers MVV over MVV-LVA, they talk about code complexity but to me it seems that one additional subtraction is not very complex at all, probably it tested 0.1 Elo better. Exactly, LVA serves a sole purpose to resolve ties. A couple of instructions and 70k games...
by Joerg Oster
Tue Jun 04, 2019 9:10 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish and Multi-PV
Replies: 24
Views: 3532

Re: Stockfish and Multi-PV

I am disappointed, I was wondering if it made sense SF could build an opening book by itself using Multi-PV. First results (analysis time 100ms) looked promising 48.3% against the ProDeo book, 49.4% (analysis time 1000ms), now trying 2000ms but I think I am wasting my time looking at the moves it s...
by Joerg Oster
Mon Jun 03, 2019 2:22 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish and Multi-PV
Replies: 24
Views: 3532

Re: Stockfish and Multi-PV

I am disappointed, I was wondering if it made sense SF could build an opening book by itself using Multi-PV. First results (analysis time 100ms) looked promising 48.3% against the ProDeo book, 49.4% (analysis time 1000ms), now trying 2000ms but I think I am wasting my time looking at the moves it s...
by Joerg Oster
Mon Jun 03, 2019 8:56 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish and Multi-PV
Replies: 24
Views: 3532

Re: Stockfish and Multi-PV

sf-multi-pv.jpghttp://talkchess.com/forum3/download/file.php?mode=view&id=557&sid=7aba7a842a1f513c9b9e21856ed59329 This is Stockfish Multi-pv=3 after 1.e4 c5 2.Nf3 Nc6 It's hard to believe that at depth 18 : #1. d4 is nowhere in sight; #2. h3? is the third best move. Have seen other strange mov...