Author: Duncan Roberts
Date: 10:23:26 03/25/04
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Please keep up the reports. Any estimate when it should get to the 1800 elo level at 5 nodes/sec ? Duncan On March 25, 2004 at 00:06:38, Steven Edwards wrote: >Symbolic: mini-progress report 2004.03.25 > >This is a mini progress report because there has been mini progress on Symbolic >recently. Some items: > >1. Symbolic is now a registered player at ICC and may also appear at FICS. >However, I still need to write an interface and this will take a few weeks at >the least. And it will be months until it can play much better than randomly. > >2. The ChessLisp MateIn2 recognizer turned out to work not quite as well as I >hoped as it also recognized stalemating moves in addition to mate in two moves. >Chalk up another point for the benefits of regression testing; Symbolic is now >on a daily diet of thousands of EPD test positions. > >3. The initial work on pattern instance generation has started. A long way to >go on this one. > >4. The narrative output has been improved slightly and also includes better >position captions, PV display, and information on book move selection. A sample >is appended below. > >The plan is to continue with the simple pattern instance work with the >intermediate goal of getting a reasonable non-search tactical exchange analysis >(both evaluation and a confidence factor). > >-------- > >Greetings. This is Symbolic release 2004.03.24. I've started the selection >process at 2004.03.25 00:05:15. > >I created the search tree with it's root node and candidate set. There are >thirty-two candidate moves available: (Ba3 Bb4 Bc5 Bd6 Bd7 Be7 Kd7 Ke7 Na6 Nbd7 >Nc6 Ne4 Nfd7 Ng4 Ng8 Nh5 Qd6 Qd7 Qe7 Rg8 a5 a6 b5 b6 c5 c6 dxc4 e5 g5 g6 h5 >h6). > >The root position (The fourth move, Black to play): > >[D] rnbqkb1r/ppp2ppp/4pn2/3p4/2PP4/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 1 4 > >I've selected the opening book move 4... c6. The resulting position occurs >five hundred ninety-three times in my opening library. The scoring rate for >this move is forty-six percent. > >The result position (The fifth move, White to play): > >[D] rnbqkb1r/pp3ppp/2p1pn2/3p4/2PP4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 0 5 > >I've selected the move 4... c6. No expectation is available. The predicted >variation is: (4... c6). A total of 0.24 processor seconds were used for the >selection. The search tree has one interior node, thirty-two leaf nodes, and >thirty-three total nodes. My selection rate is one hundred thirty-seven nodes >per second, and my average node time is seven milliseconds. I've ended the >selection process at 2004.03.25 00:05:15.
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