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LCZero blunders in TCEC cup 4

Posted: Tue Oct 29, 2019 4:02 pm
by Jouni


-Qc6?? 1-0 and SF is champion. LCZero still has tactical holes..

Re: LCZero blunders in TCEC cup 4

Posted: Tue Oct 29, 2019 5:36 pm
by Jouni
Addition: LCZero lost also to Komodo by tactics blunder, but that wasn't fatal.

Re: LCZero blunders in TCEC cup 4

Posted: Thu Oct 31, 2019 12:02 pm
by shrapnel
Jouni wrote:
Tue Oct 29, 2019 4:02 pm
Qc6?? 1-0 and SF is champion. LCZero still has tactical holes..
Yeah right, SF will be Champion as long as TCEC uses wimpy NNs and GPUs.
THIS is what my lc0 chooses, certainly not the ridiculous Qc6.
In case you are unaware, I'm running twin ASUS ROG 2080 Tis OC with the FABULOUS 384x30 Sergio NNs....
Image

Re: LCZero blunders in TCEC cup 4

Posted: Thu Oct 31, 2019 8:56 pm
by Dann Corbit
Where can I find the 384x30 Sergio NNs?
I want to do a 384 test when my 256 is finished today.

Re: LCZero blunders in TCEC cup 4

Posted: Thu Oct 31, 2019 11:37 pm
by Robert Flesher
New game
5k2/3n1p1p/7P/1pqN2P1/2r1rP2/5Q2/6K1/3R1R2 b - - 0 1

Analysis by Lc0 v0.22.0:

40...b4 41.Rfe1 Rxe1 42.Rxe1 b3 43.Kh3 Rc1 44.Rxc1 Qxc1 45.Qxb3 Qf1+ 46.Kh2 Qf2+ 47.Kh3 Qf1+ 48.Kh4 Qe1+ 49.Kg4 Qe2+ 50.Kg3 Qe1+ 51.Kf3 Qf1+ 52.Kg4 Qe2+ 53.Qf3 Qxf3+ 54.Kxf3 f6 55.Kg4 fxg5 56.Kxg5 Kf7 57.Kf5 Nf8 58.Nf6 Ke7 59.Ne4 Nd7 60.Ng5 Nf6 61.Nxh7 Nxh7 62.Kg6 Nf8+ 63.Kg7
+/= (0.54) Depth: 24/58 00:02:28 3277kN


I cannot get my LCO to play that silly move.

Re: LCZero blunders in TCEC cup 4

Posted: Fri Nov 01, 2019 6:04 am
by Eduard
Dann Corbit wrote:
Thu Oct 31, 2019 8:56 pm
Where can I find the 384x30 Sergio NNs?
I want to do a 384 test when my 256 is finished today.
https://www.comp.nus.edu.sg/~sergio-v/t40/384x30/

Re: LCZero blunders in TCEC cup 4

Posted: Fri Nov 01, 2019 8:52 am
by maxdeg
Dann Corbit wrote:
Thu Oct 31, 2019 8:56 pm
Where can I find the 384x30 Sergio NNs?
I want to do a 384 test when my 256 is finished today.
Here you go Dann .. (from a friend of mine 'sarona')

T40: https://www.comp.nus.edu.sg/~sergio-v/t40/384x30/
T60: https://www.comp.nus.edu.sg/~sergio-v/t60/384x30/

Re: LCZero blunders in TCEC cup 4

Posted: Fri Nov 01, 2019 4:08 pm
by Dann Corbit
Thanks to Eduard and maxdeg

Re: LCZero blunders in TCEC cup 4

Posted: Tue Nov 05, 2019 8:34 am
by mmt
LC0 doesn't choose Qc6 either for my setup and the score difference is pretty big (0.76).

Re: LCZero blunders in TCEC cup 4

Posted: Tue Nov 05, 2019 10:26 am
by shrapnel
mmt wrote:
Tue Nov 05, 2019 8:34 am
LC0 doesn't choose Qc6 either for my setup and the score difference is pretty big (0.76).
Yes, indeed. What was odd was that my Setup didn't even look ONCE at Qc6 !
Assuming that TCEC has at least half-decent GPUs, this is quite surprising.
Makes one wonder if the TCEC people are biased against NN Engines, especially if they are old men.
I remember that the Golden Oldies here were the most upset when AlphaZero first appeared on the scene and made mincemeat of the God of AB Engines, Stockfish. They were extremely relieved when Google showed no further interest in Computer Chess.
And there's no one happier than them that Leela's Progress has hit a temporary Roadblock.