Search found 481 matches

by jhellis3
Wed Jul 08, 2020 2:47 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish sewing machine
Replies: 28
Views: 2540

Re: Stockfish sewing machine

Out of curiosity, was the search single or multi threaded?

If multi threaded, could you run again with single thread and check if behavior is the same?
by jhellis3
Tue Jul 07, 2020 3:02 am
Forum: Computer Chess Club: General Topics
Topic: How did this happen? SF says +154 and draw.
Replies: 22
Views: 2046

Re: How did this happen? SF says +154 and draw.

Perhaps I am missing something, but AFAICS (with single thread crystal) the position appears to be winning? White shuffles a bit to get the queen to e5 threatening the g5 pawn with the black king already at g6, black moves rg8 to hold the pawn, white Qa1 and gg? [Event ""] [Site ""] [Date "????.??.?...
by jhellis3
Tue Jun 16, 2020 6:36 pm
Forum: Computer Chess Club: General Topics
Topic: TCEC Kibitzing
Replies: 8
Views: 1323

Re: TCEC Kibitzing

Dann's question was about kibitzing, not just watching....
by jhellis3
Tue Jun 16, 2020 3:05 pm
Forum: Computer Chess Club: General Topics
Topic: TCEC Kibitzing
Replies: 8
Views: 1323

Re: TCEC Kibitzing

You have to have a twitch account and follow TCEC on twitch (following is free).
by jhellis3
Sun Jun 14, 2020 1:20 pm
Forum: Computer Chess Club: General Topics
Topic: I think Crystal must have an eval bug
Replies: 5
Views: 765

Re: I think Crystal must have an eval bug

Yes, Crystal will often have the most unstable eval out of all the engines, by design. At least when the position is not a draw :wink: . The other AB engines do not have progress detection (or at least not to the level of Crystal) either. There are also many situations where Crystal has had both the...
by jhellis3
Sun Jun 14, 2020 12:52 pm
Forum: Computer Chess Club: General Topics
Topic: I think Crystal must have an eval bug
Replies: 5
Views: 765

Re: I think Crystal must have an eval bug

No...

Crystal does not touch eval except to reduce it for shuffling. What you are perceiving is the result of mcts eval being very stable and Crystal exploring suboptimal paths, correcting the score, and switching off of them.
by jhellis3
Sat Jun 06, 2020 6:33 pm
Forum: Computer Chess Club: General Topics
Topic: Bug in Crystal ?
Replies: 17
Views: 1637

Re: Bug in Crystal ?

Crystal evaluates the position after 74.Rdxa6 with 97+ correctly at once having it on board, why can't it "see" this one on disk stored 6men just 1 ply befor It does see it; it is just allowed to search beyond the TB hit. In most TB win situations, the engine will also score them favorably, and mat...
by jhellis3
Fri Jun 05, 2020 8:14 pm
Forum: Computer Chess Club: General Topics
Topic: Bug in Crystal ?
Replies: 17
Views: 1637

Re: Bug in Crystal ?

Ok, here is what is going on... Crystal is allowed to search normally on non-draw tb hits, and thus display the engine eval (typically mates) over the TB score much sooner. However, in very difficult to resolve situations, such as the fen posted you still get the engine eval, but it displays drawish...
by jhellis3
Fri Jun 05, 2020 3:50 pm
Forum: Computer Chess Club: General Topics
Topic: Bug in Crystal ?
Replies: 17
Views: 1637

Re: Bug in Crystal ?

Ok, I created 3 versions to test labeled a, b, & c.

Please try on original fen: 8/8/p4k2/R7/3R2K1/1r1n4/8/8 w - - 0 73

https://www.dropbox.com/s/rrtz6m69s8smn ... al.7z?dl=1