Author: James Robertson
Date: 10:53:06 05/07/99
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On May 07, 1999 at 12:49:00, Paul Richards wrote: >I setup LGGold 2.0 as an engine under Fritz 5.32 on a PII 400 machine with >128MB to test the position below given earlier by Mr. Monkman: > >FEN "r4rk1/pp2qpp1/nnp1p2p/2b1P1N1/2P2P2/6N1/PP2Q1PP/R1B2R1K w - - 0 1" > >The correct solution to this position is 1. f5 hxg5 2. f6 Qc7 3. fxg7 Kxg7 >4. Bxg5, etc., at which point any program will see the win quickly. >Fritz is a fast searcher, but for some reason it has to go well into a >15 ply search to find the winning line, which takes many hours even on >a PII 400 for this position. However once supplied with 1. f5 it finds >the rest of the line before 12 ply. > >LGGold 2.0 smokes this position faster than any other engine I've seen >so far. It finds the solution at 12 ply, which is actually where it >SHOULD be found, but for some reason Fritz has to search to almost 16 >ply to see the solution. LGGold 2.0 finds the solution in 8 minutes, >36 seconds. The LGGold log file gives 12 72 516 223292230 f4f5, which >agrees with the Fritz interface that the nps was in the neighborhood >of 428,000! (BTW, first parameter is depth, third is time, fourth is >nodes, and fifth is pv, what does the second parameter represent? I would assume the score. James >Selective depth?). While I have seen Fritz do 550,000 on this machine, it >varies according to the position, and for this one Fritz gets 349,000 >nps compared to 428,000 for LGGold. Any program that searches faster >than Fritz is damn fast, that's all I can say. It also handles this >position much better than Fritz. I look forward to testing LGGold on >other positions Fritz has a hard time with.
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