mmt Vs. Ovyron (G4 D5 BG2)

Discussion of computer chess matches and engine tournaments.

Moderators: hgm, Rebel, chrisw

zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by zullil »

jp wrote: Tue Jan 28, 2020 4:43 pm
Alayan wrote: Tue Jan 28, 2020 2:22 pm Board position after the conditionals:
1r1qkb1r/p2nnppp/Q1p5/3p4/3P2b1/2N5/PP2PPBP/R1B1K1NR b KQk - 3 9
Komodo 13.2, depth 28: -1.12 ...Rb6.
I'm kibitzing with Komodo 13.2.5 (with MultiPV = 3). Reached depth 50 while waiting for 8. d4 to be officially played. Komodo's PV began with

-1.14 8. d4 Rb8 9. Qa6 ... (depth 50, 59:24:09)

Will now update to the current position and continue.
mmt
Posts: 343
Joined: Sun Aug 25, 2019 8:33 am
Full name: .

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by mmt »

If 9.... Rb6 then 10. Qd3

No major disagreements between LC0 and SF 11 yet.
User avatar
Ovyron
Posts: 4556
Joined: Tue Jul 03, 2007 4:30 am

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by Ovyron »

So how's Leela's eval holding? It'd be interesting to know at what points it crosses -1.20, -1.30, -1.40, -1.50, -1.60...

Conditional accepted:

1. g4 d5 2. c4 Bxg4 3. Bg2 c6 4. Qb3 e6 5. Qxb7 Nd7 6. Nc3
Ne7 7. cxd5 exd5 8. d4 Rb8 9. Qa6 Rb6 10. Qd3

[d]3qkb1r/p2nnppp/1rp5/3p4/3P2b1/2NQ4/PP2PPBP/R1B1K1NR b KQk -

My turn again.

(I don't think I'll be deviating here, so expect 10...Ng6, but I'll expand some lines still)
mmt
Posts: 343
Joined: Sun Aug 25, 2019 8:33 am
Full name: .

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by mmt »

Ovyron wrote: Wed Jan 29, 2020 2:10 am So how's Leela's eval holding? It'd be interesting to know at what points it crosses -1.20, -1.30, -1.50, -1.60...
It was -1.26, SF -1.37. I'm trusting SF's eval more in this position.
zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by zullil »

mmt wrote: Wed Jan 29, 2020 2:22 am
Ovyron wrote: Wed Jan 29, 2020 2:10 am So how's Leela's eval holding? It'd be interesting to know at what points it crosses -1.20, -1.30, -1.50, -1.60...
It was -1.26, SF -1.37. I'm trusting SF's eval more in this position.
Komodo says -1.18 for the current position, though only at depth 35 so far.
User avatar
Ovyron
Posts: 4556
Joined: Tue Jul 03, 2007 4:30 am

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by Ovyron »

1. g4 d5 2. c4 Bxg4 3. Bg2 c6 4. Qb3 e6 5. Qxb7 Nd7 6. Nc3 Ne7 7. cxd5 exd5 8. d4 Rb8 9. Qa6 Rb6 10. Qd3 Ng6

[d]3qkb1r/p2n1ppp/1rp3n1/3p4/3P2b1/2NQ4/PP2PPBP/R1B1K1NR w KQk -
mmt
Posts: 343
Joined: Sun Aug 25, 2019 8:33 am
Full name: .

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by mmt »

1. g4 d5 2. c4 Bxg4 3. Bg2 c6 4. Qb3 e6 5. Qxb7 Nd7 6. Nc3 Ne7 7. cxd5 exd5 8. d4 Rb8 9. Qa6 Rb6 10. Qd3 Ng6 11. h3

[d]3qkb1r/p2n1ppp/1rp3n1/3p4/3P2b1/2NQ3P/PP2PPB1/R1B1K1NR b KQk - 0 11

If 11.... Be6 then 12. Nf3
jp
Posts: 1470
Joined: Mon Apr 23, 2018 7:54 am

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by jp »

zullil wrote: Tue Jan 28, 2020 6:51 pm I'm kibitzing with Komodo 13.2.5 (with MultiPV = 3). Reached depth 50 while waiting for 8. d4 to be officially played.
That's good. :) Komodo takes much longer to get to higher depths, which I guess (if there's not so much difference reaching low depths) is because it prunes far less aggressively.

mmt wrote: Wed Jan 29, 2020 11:59 am 3qkb1r/p2n1ppp/1rp3n1/3p4/3P2b1/2NQ3P/PP2PPB1/R1B1K1NR b KQk - 0 11
While we wait...
Komodo 13.2, depth 28: -0.95 ...Be6.
Alayan
Posts: 550
Joined: Tue Nov 19, 2019 8:48 pm
Full name: Alayan Feh

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by Alayan »

Now the game is becoming very interesting. Move 11 was one important choice for white. h3 is the move that seems to be preferred, but the difference with some other moves, like Nf3, isn't all that big, and it may turn out to be worse.

Be6 Nf3 seems forced. ChessDBCN gives -1.44 after they are played.
jp
Posts: 1470
Joined: Mon Apr 23, 2018 7:54 am

Re: mmt Vs. Ovyron (G4 D5 BG2)

Post by jp »

Ovyron wrote: Sun Jan 26, 2020 7:52 am https://www.chessdb.cn/queryc_en/

You can explore the chess lines that it has and request analysis for the moves that it doesn't; it will expand the moves you insert automatically and backsolve their scores to propagate them backwards so previous positions have them ranked correctly in real time.
Thanks for the link. How good its results will be depends a lot on how deep its analysis is at leaf nodes, right (and that's unspecified)?