Soccer-like chess

Discussion of anything and everything relating to chess playing software and machines.

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Laskos
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Joined: Wed Jul 26, 2006 10:21 pm
Full name: Kai Laskos

Re: Soccer-like chess

Post by Laskos »

syzygy wrote:
Laskos wrote:
syzygy wrote:
Laskos wrote:In fact, this evening I got curious about TCEC games versus ultra-fast games in Komodo's dependency of expected outcome of the games and the value of the eval.
Sorry if I have missed this, but what are your graphs showing exactly?
Does each point correspond to multiple self-plays from one and the same opening position? Or does each point correspond to self-plays from various opening positions, each with (approximately) the same initial evaluation?

(Of course different points on the same line correspond to different opening positions.)
Different middlegame positions (moves 20-30) for an interval of eval (say a shown eval of 0.4 means interval [0.3,0.5]). I can do only with these moving averages because I need to collect some sufficient data, which is easy for many ultra-fast games, but hard for only 100 TCEC games. Games are self-play for short ones done here locally, K-SF games for TCEC Superfinal.
If each point represents the average result starting from several positions (with approximately the same eval), then the graph for the "perfect engine" most likely won't look like a step function. Some positions that are evaluated as 0.40 will be theoretical draws (and will be drawn by a perfect engine in self-play), some positions will be theoretical wins (and will be won by a perfect engine in self-play). So the "perfect graph" will look like those for SF and K.
If you want me to plot the "moving average perfect engine", then for an eval threshold of 0.90 the interval of eval from 0.70 to 1.10 will have a slope, as the expected results are linear interpolation of draws and wins for the average. I plotted it here:
Image
TCEC level is a bit closer now to "perfect", but "artistic regression" still seems to show that at least 800 ELO points above TCEC would be needed to reach the "perfect engine (moving average)".
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Leto
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Re: Soccer-like chess

Post by Leto »

Leto wrote:Here's an opening I found with an exit eval of -0.79 from K9.3 at depth 29:
1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. f3 exf3 5. Nxf3 Nf6 6. Bc4 Bf5 7.Ne5 e6 8. O-O

[d]rn1qkb1r/pp3ppp/2p1pn2/4Nb2/2BP4/2N5/PPP3PP/R1BQ1RK1 b kq - 0 8
Here's one with an exit eval of .75 from K9.3 at deph 31:
1. f4 Nc6 2. Nf3 d6 3. e4 g6 4. d4 e6 5. c3
Nf6 6. Bd3 Bd7
[d]r2qkb1r/pppb1p1p/2nppnp1/8/3PPP2/2PB1N2/PP4PP/RNBQK2R w KQkq - 0 7

And here's -.75 from K9.3 at depth 31:
1. e4
e5 2. f4 Bc5 3. Qg4 Nf6
[d]rnbqk2r/pppp1ppp/5n2/2b1p3/4PPQ1/8/PPPP2PP/RNB1KBNR w KQkq - 0 4