Author: Vincent Diepeveen
Date: 18:36:27 08/17/00
Go up one level in this thread
On August 17, 2000 at 21:29:01, Paulo Soares wrote: >On August 17, 2000 at 19:37:47, Vincent Diepeveen wrote: > >>On August 17, 2000 at 18:22:37, Dann Corbit wrote: >> >>>On August 17, 2000 at 18:08:36, Vincent Diepeveen wrote: >>> >>>>On August 16, 2000 at 18:41:59, Lars Sandin wrote: >>>> >>>>>On August 16, 2000 at 17:48:20, Dann Corbit wrote: >>>>> >>>>>>On August 16, 2000 at 17:35:44, Jari Huikari wrote: >>>>>> >>>>>>>On August 16, 2000 at 17:23:33, Dann Corbit wrote: >>>>>>> >>>>>>>>Took 2 seconds to solve the hardest two. The other took one second. The >>>>>>>>machine was not a very fast one. On one of the fast machines, it would probably >>>>>>>>do a lot better. >>>>>>> >>>>>>>Was the program searching especially for mates? >>>>>> >>>>>>Chest 3.19 by Heiner Marxen (the best mate solver on the planet by a landslide). >>>>>> >>>>>>>How much time would need >>>>>>>to find the moves, if these positions were in normal game? >>>>>> >>>>>>Infinite. It does not play chess, since it's just a mate solver. On the other >>>>>>hand, on a multithreading machine, you could have the mate solver buzzing away >>>>>>in its own little thread while your chess engine is playing chess in a normal >>>>>>fashion. Then, if the mate solver sees something interesting, it could report >>>>>>it to the chess engine. It is actually an idea I have been entertaining, and >>>>>>incredibly simple to implement. >>>>> >>>>>How fast (approx.) does the program see longer mate-sequences; for instance in a >>>>>normal game - a mate in about 10 moves? >>>> >>>>Oh well it's a mate only searcher. Let's give it a huge mate >>>>(which a selective searcher could find real quick btw) >>>> >>>>8/Bk3p1p/1P3p2/KP2n2p/1P1p4/1Pp2p2/B1P5/7B w - - >>>> >>>>If it finds a mate here, please post the line, >>>>as i don't have the winning line for this position. I know how to win >>>>it, but DIEP will not soon see a mate here, stack problem... >>>>...but i like to keep my mating probs complete. >>> >>>That's not a mate in 10. It is more than 20 ply to any mate from that position. >> >>Oh well, some selective searchers have no problem finding this mate, >>though it's way more as 20*20 ply :) > >I think that below is the position that the white ones have to get to win the >game and, consequently, to give the checkmate. >I got this position after 191 moves, or 382 plies and after 3 hours. Poor white >king, has to walk a lot :) > >[D] 8/Bk6/1P6/KP2np2/1P1p1p2/1Pp2p1p/2P4p/1B5B b - - 0 191 > >Paulo Soares, from Brazil Human mind is unbeatable yeah. The 3 corner trick at e1-f1-f2 is the only thing you need to see and then you rock :)
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