Search found 1635 matches

by yanquis1972
Tue Jan 29, 2019 2:46 pm
Forum: Computer Chess Club: General Topics
Topic: Did Leela miss a win in the KGA vs SF here?
Replies: 3
Views: 1038

Did Leela miss a win in the KGA vs SF here?

[Event "SfDev vs lc0 id32952+"] [Site "PC"] [Date "2019.01.29"] [Round "1"] [White "Lc0 T30 id32952"] [Black "SFDEV"] [Result "1/2-1/2"] [BlackElo "3000"] [ECO "C33"] [Opening "KGA"] [Time "07:55:16"] [Variation "Bishop's Gambit"] [WhiteElo "3000"] [TimeControl "600+10"] [Termination "normal"] [Ply...
by yanquis1972
Mon Jan 28, 2019 8:21 pm
Forum: Computer Chess Club: General Topics
Topic: SF10 blunder??
Replies: 6
Views: 1415

Re: SF10 blunder??

Leelas eval is in win percentage, so it actually dropped after 42. Rc2 (SF also shows a slight plus for some reason) and shot up to 90% after 43 Rc1. I trust your judgment but Rc2 prepares Rf3 defending the pawn; I assume there are some tactical tricks that both engines missed?
by yanquis1972
Mon Jan 28, 2019 7:10 pm
Forum: Computer Chess Club: General Topics
Topic: SF10 blunder??
Replies: 6
Views: 1415

Re: SF10 blunder??

Arena with 5 man TBs, 4GB hash for SF (I suspect one of these two is the issue if it’s not replicable), otherwise should be default settings.

Used the code tag since I wasn’t sure if the pgn tag kept all the info.
by yanquis1972
Mon Jan 28, 2019 6:33 pm
Forum: Computer Chess Club: General Topics
Topic: SF10 blunder??
Replies: 6
Views: 1415

SF10 blunder??

anyone able to replicate this/explain the logic? SF just gives up a pawn in what both engines had evaluated as a drawish/drawn position with 43. Rc1... my CPU is currently occupied w/ the ongoing match so i'm curious if SF discovered the position was in fact completely lost. [d]8/1p1r1p2/1R2b3/P2p1k...
by yanquis1972
Mon Jan 28, 2019 4:43 pm
Forum: Computer Chess Club: General Topics
Topic: LC0 bad search and poor tactics
Replies: 45
Views: 8592

Re: LC0 bad search and poor tactics

t30 seems to have issues with basic QP opening positions, & overly optimistic pawn grabs at b2/g7...in a 20 game match at 10'+10s this was the only game lost https://lichess.org/study/CpmlY6g4/VtKMT2ow#0 absolutely smashed with no effort. what's more the slav was at one point a strength for t30, but...
by yanquis1972
Sun Jan 27, 2019 5:14 pm
Forum: Computer Chess Club: General Topics
Topic: LC0 bad search and poor tactics
Replies: 45
Views: 8592

Re: LC0 bad search and poor tactics

I think Lc0 is indeed very weak in tactics when compared to modern AB engines. I was looking at some of the games of a tourney I made against latest Dev SF and it lost many points by overlooking 1 move simple tactics. But even with this handicap it still trounced SF by around 90 ELO points. The way...
by yanquis1972
Sun Jan 27, 2019 3:21 am
Forum: Computer Chess Club: General Topics
Topic: Big boost in strength for LC0 by simply changing VGA card
Replies: 19
Views: 4920

Re: Big boost in strength for LC0 by simply changing VGA card

suspect there's been a significant gain in conjunction with the drop in self-elo, which seems to've recovered. a lot of complex endgames seem soft-solved; winning scores (~75%/~+2.50) where SF might give half/three quarters pawn advantage with fairly deep search. this 1min+1s bullet game on weak har...
by yanquis1972
Sat Jan 26, 2019 9:51 pm
Forum: Computer Chess Club: General Topics
Topic: LC0 bad search and poor tactics
Replies: 45
Views: 8592

Re: LC0 bad search and poor tactics

comparison test30 & test10 from move 7 (t30 seemed to fare no better w/ reductive FPU; i don't know what the recommended setting is) -- [D] rnbqk2r/ppp2ppp/4p3/8/1bBPn3/2N2N2/PP3PPP/R1BQ1RK1 b kq - 1 7 Lc0 id32906 [FPU: absolute]: 1/2 00:00.032 2 62 -48.45 7. ... Bxc3 8.bxc3 2/3 00:00.043 4 93 -50.2...
by yanquis1972
Sat Jan 26, 2019 5:52 pm
Forum: Computer Chess Club: General Topics
Topic: LC0 bad search and poor tactics
Replies: 45
Views: 8592

Re: LC0 bad search and poor tactics

yeah, what i found when looking at test10 & test40 in this position isn't that they avoid f6 (although it may be that t10 (11248) was able to see it was a mistake eventually; i don't recall) but that, unlike t30, avoid getting themselves into the position in the first place. which is another reason ...
by yanquis1972
Sat Jan 26, 2019 3:01 pm
Forum: Computer Chess Club: General Topics
Topic: LC0 bad search and poor tactics
Replies: 45
Views: 8592

Re: LC0 bad search and poor tactics

So spend $1200 dollars, create his own networks, and play something other than chess.