Author: Uri Blass
Date: 12:45:48 11/18/02
Go up one level in this thread
On November 18, 2002 at 14:23:04, Roy Eassa wrote: >On November 18, 2002 at 14:21:09, Roy Eassa wrote: > >>On November 17, 2002 at 14:30:38, Alastair Scott wrote: >> >>>On November 17, 2002 at 13:25:30, Jose Gonzalbez wrote: >>> >>>> Because my CD of Rebel9 doesnt work in my Pentium 4 i finally decided to >>>>buy the last Rebel version, but what can i do with other "historical" programs >>>>like the MChess of Marty Hirsch?. MChess only displays a security error "This >>>>program is not authorized on this disk". Obviously, I changed my PC since I >>>>originally installed MChess a lot of years ago... Is there a way to reinstalled >>>>the program in my new computer? >>>> Other programs that doesnt work in my system (sigh...): Powerchess >>>>(Kittinger's WChess), Rex, Mirage... >>> >>>I have a few old chess programs kicking around; as some of these programs used, >>>in retrospect, highly dubious and fragile copy-protection mechanisms - special >>>sectors written to the hard disk, 'key files' on floppy disk not visible to >>>normal installations of DOS and so on - it's quite possible they will not work >>>on modern machines and OSes. (I can't test as I moved to Linux). >>> >>>Anyway, things move on. I was amused by this post >>> >>>http://www.seanet.com/~brucemo/nolot/nolot1.txt >>> >>>No '... weeks or months ...' now! >>> >>>Alastair >> > >(Sorry, added the diagram this time.) > >I don't think even today's programs/computers will play Nxh6 and see that White >is winning in a reasonable amount of time. I remember that Gandalf could see that it gives the advantage. Programs also do not need to see that Nxh6 is winning but only that Nxh6 is better than other moves to play it and there are programs that can play Nxh6. Movei can see that some alternatives to Nxh6 are bad but even after 30 minutes on p850 it does not see than Nxh6 is better. depth=11 -1.93 d1d4 c4c3 g3c3 d5c3 b2c3 d6d5 a4a5 d5e4 c3b4 a8d8 d4c3 f8b4 c3b4 Nodes: 23357525 NPS: 129771 Time: 00:02:59.99 depth=11 -1.73 a4a5 c4c3 g3c3 h6h5 c3g3 h5g4 d1g4 e6e7 g4f5 a8c8 b2d4 Nodes: 30014453 NPS: 129551 Time: 00:03:51.68 depth=11 -1.72 f2f3 Nodes: 37346099 NPS: 130430 Time: 00:04:46.33 depth=11 -1.39 f2f3 a8c8 b2d4 c4c3 b1c2 h6h5 g4f2 c8c4 c2b3 c3c2 d1d2 Nodes: 51093091 NPS: 130064 Time: 00:06:32.83 depth=11 -1.39 f2f3 a8c8 b2d4 c4c3 b1c2 h6h5 g4f2 c8c4 c2b3 c3c2 d1d2 Nodes: 105283541 NPS: 133960 Time: 00:13:05.93 depth=12 -1.45 f2f3 a8c8 b2d4 c4c3 b1c2 d5f4 g4e3 b4c2 d1c2 b7e4 f3e4 e6e4 d4c3 e4a4 Nodes: 122645990 NPS: 133422 Time: 00:15:19.23 depth=12 -1.44 g4e3 Nodes: 139106965 NPS: 133571 Time: 00:17:21.44 depth=12 -1.11 g4e3 e6e4 b1e4 e8e4 e3d5 e4d5 d1c1 d5f7 c1h6 h8g8 e1e6 b4d3 b2g7 f7f2 g1h2 f2g3 h2g3 f8g7 Nodes: 153296670 NPS: 133520 Time: 00:19:08.11 depth=12 -1.11 g4e3 e6e4 b1e4 e8e4 e3d5 e4d5 d1c1 d5f7 c1h6 h8g8 e1e6 b4d3 b2g7 f7f2 g1h2 f2g3 h2g3 f8g7 Nodes: 188179325 NPS: 134699 Time: 00:23:17.03 depth=13 -1.12 g4e3 e6e4 b1e4 e8e4 e3d5 e4d5 d1c1 d5h5 c1c4 b4d5 c4b3 h5f7 b2d4 h8g8 Nodes: 212314414 NPS: 134400 Time: 00:26:19.71 Uri
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