Author: Drexel,Michael
Date: 15:38:43 12/22/05
Go up one level in this thread
On December 22, 2005 at 15:23:07, Dann Corbit wrote: >On December 22, 2005 at 14:35:56, Drexel,Michael wrote: > >>On December 22, 2005 at 13:26:55, Dann Corbit wrote: >> >>>On December 21, 2005 at 21:20:10, Uri Blass wrote: >>> >>>>On December 21, 2005 at 20:30:18, Dann Corbit wrote: >>>>> >>>>>Generally speaking, chess engines have terrible judgement in early opening >>>>>positions and absurd judgement in gambits. >>>>> >>>>>For a bit of gambit fun, try this position on your chess engine: >>>>> >>>>>[D]r1bqk1nr/pppp1ppp/2n5/b7/2BpP3/2P2N2/P4PPP/RNBQ1RK1 b kq - am dxc3; bm Nge7; >>>>> >>>>>and see how long it takes to find Nge7. Most engines I tried cannot find it in >>>>>an 8 hour search. I have not tried it lately, but I guess that they still >>>>>cannot find it at 40/2, no matter what the hardware or program (w/o book, that >>>>>is). >>>> >>>>am dxc3 is easy for rybka >>> >>>Not for the others, though. >>> >>>>bm Nge7 is an harder problem and Rybka likes Nf6 >>>>Are you sure that Nge7 is the only move? >>> >>>It is clearly the best move. >> >>I wonder how you came to that definite conclusion? >>You are aware of the alternative 7...Bb6 8.cxd4 d6 ? > >It appears to have been popular in the 1800's. In my database, I have 512 games >from that position: >[D]r1bqk1nr/ppp2ppp/1bnp4/8/2BPP3/5N2/P4PPP/RNBQ1RK1 w kq - >and white scores 58.8% of the points (well above average). > >I am analyzing the position now. Usually the position was reached by the move order 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Bc5 6. O-O d6 7. d4 exd4 8. cxd4 Bb6.
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