Search found 701 matches

by jp
Mon Sep 16, 2019 1:30 pm
Forum: Computer Chess Club: General Topics
Topic: What kind of game is chess?
Replies: 12
Views: 411

Re: What kind of game is chess?

For example an AB engine sees checkmate in 4 moves, but LCZero makes another 50 moves and gives checkmate in endgame like KRK, KQK, KBBK, KBNK etc. The same thing with forced wins. Many people still don't understand that this is a feature of the MCTS. It doesn’t matter to MCTS how quickly you wins,...
by jp
Mon Sep 16, 2019 4:10 am
Forum: Computer Chess Club: General Topics
Topic: The Busted Dutch
Replies: 68
Views: 1917

Re: The Busted Dutch

Graham Banks wrote:
Sun Sep 15, 2019 1:02 am
I found the following comments on 2.d5
Comments from whom?
by jp
Sun Sep 15, 2019 3:14 am
Forum: Computer Chess Club: General Topics
Topic: Leela Output
Replies: 11
Views: 603

Re: Leela Output

phhnguyen wrote:
Sun Sep 15, 2019 3:08 am
Allow me to add an extra question (perhaps it is answered somewhere but I cannot find out).
It's answered here (look at page 2):

viewtopic.php?f=2&t=71686
by jp
Sat Sep 14, 2019 5:44 am
Forum: Computer Chess Club: General Topics
Topic: Out of the Kai 450 positions, 99 not found by SF
Replies: 101
Views: 9802

Re: Out of the Kai 450 positions, 99 not found by SF

r1bq1r2/pppn2k1/2Pp1b2/3Pp3/1P2PpP1/2N2P1p/P3B3/R2QNR1K b Nb6 may also win. r1bq1r2/pppn2k1/2Pp1b2/3Pp3/1P2PpP1/2N2P1p/P3B3/R2QNR1K b - - acd 37; ce -178; acs 267; acn 2470000; pv Nb6 a4 bxc6 a5 Nd7 dxc6 Nb8 Qa4 Bh4 Bc4 a6 Nd3 Bg3 Bd5 Rh8 Qc2 Qf6 Rfd1 Kf8 Ne2 Qh4 Rf1 Rh7 Bb3 Rh6 Rg1 Ke7 Rad1 Ke8 Bd...
by jp
Sat Sep 14, 2019 1:08 am
Forum: Computer Chess Club: General Topics
Topic: Out of the Kai 450 positions, 99 not found by SF
Replies: 101
Views: 9802

Re: Out of the Kai 450 positions, 99 not found by SF

r1bq1r2/pppn2k1/2Pp1b2/3Pp3/1P2PpP1/2N2P1p/P3B3/R2QNR1K b - - 1 20 Now at info depth 56 seldepth 109 multipv 1 score cp -225 nodes 166645749526 nps 21408155 hashfull 1000 tbhits 0 time 7784218 pv b7c6 d5c6 d7b6 a2a4 c8e6 a4a5 b6c4 d1b3 d6d5 a1d1 c4e3 e4d5 e6g8 e1d3 f6e7 d3e5 d8d6 e5d7 d6b4 b3b4 e7b...
by jp
Fri Sep 13, 2019 12:23 pm
Forum: Computer Chess Club: General Topics
Topic: Leela Output
Replies: 11
Views: 603

Re: Leela Output

Stephen Ham wrote:
Thu Sep 12, 2019 7:53 pm
I've already seen Leela perform a 180-degree change in predicting a best move in one of my ICCF games. That gives me little confidence.
What do you mean by 180-degree change? Is this an example you can show us?
by jp
Fri Sep 13, 2019 12:18 pm
Forum: Computer Chess Club: General Topics
Topic: generating mate trees
Replies: 9
Views: 380

Re: generating mate trees

So logically, the attacking side always delivers checks until mate is delivered, and the defensive side has only one way to parry the check. Otherwise I can't imagine a smaller tree if it is not a check forcing the defensive side to move or defend its king. Yes, but it's only a subset of all positi...
by jp
Thu Sep 12, 2019 12:06 am
Forum: Computer Chess Club: General Topics
Topic: generating mate trees
Replies: 9
Views: 380

Re: generating mate trees

I'm not following what you suggesting , but the tree is much bigger with Qxh7. I think Uri is taking the view from the player giving the mate, so the tree is the tree of possible defensive moves. To prove it really is a forced mate, you don't need to look at other moves that are possible for the ma...
by jp
Wed Sep 11, 2019 4:01 am
Forum: Computer Chess Club: General Topics
Topic: Which version of Komodo is the strongest, at long time control ?
Replies: 10
Views: 653

Re: Which version of Komodo is the strongest, at long time control ?

However I do not fully understand the statement, "If you want to display two or more lines of analysis, not just the best line, then Komodo MCTS is stronger, definitely so with three or more lines for each engine" . For multiPV, AB Komodo is "wasting" computation it normally wouldn't do to give you...