Author: Joachim Rang
Date: 02:45:48 10/09/02
Go up one level in this thread
On October 08, 2002 at 23:37:52, Marc Bourzutschky wrote: >On October 08, 2002 at 19:38:02, John Merlino wrote: > >>On October 08, 2002 at 18:45:36, Marc Bourzutschky wrote: >> >>>The Chessmaster FEG program (downloadable from www.chessmaster.com) is a very >>>clever tool that allows the generation of 6-man EGDB's with pawns on a 32 bit >>>machine with limited resource requirements. This would not be possible with >>>the Nalimov program without some code changes. I have generated KRPPKR which >>>occurs relatively frequently in practice (next I'll generate KRPKRP and KRKPPP.) >> >>Many thanks for posting this information. I have a few questions: >> >>Which 6-man files have you built? How long did it take to build them? Have you >>also built all of their dependent filesets? >> >>jm > >Below is a list of the endings I have generated so far, along with >some statistics. The number of seconds is somewhat misleading because >I used 3 different computers: a 1.9GHZ and 2.4GHZ P4, and an an old >800MHZ P3. For example, the KQRKQR ending was generated on the old >machine which is why it took so long. I started this whole project >September 12. > >As far as dependencies are concerned, FEG automatically stops when >dependent files are missing, so you can only generate endgames with >pawns if all possible promotions have been created. > >The main difference to the Nalimov scheme is that each EGDB only >contains WTM to win or not to win, not distinguishing between a draw >or a loss. So to get comparable info one needs to generate both >KXKY and KYKZ. For KRPPKR I have not yet generated KRKRPP because >I was mainly interested whether White can win or not, ignoring >pathological positions where White actually loses. I'll get KRKRPP >later anyway as a byproduct of generating KRKPPP, which is in the >works. Because KRKPPP can go either way, I'll also generate KPPPKR. > > >Ending # Secs WTM Size WTM Ply BTM Size BTM Ply >------------------------------------------------------------ >KQQRKR 248337 181541366 73 454405666 74 >KQRBKR 81755 705485974 135 1060868934 136 >KQRKQR 510320 1161463938 233 426465391 234 >KQRKRB 266976 1044489055 141 1252885945 142 >KQRKRN 265612 1025129450 133 1353459632 138 >KQRKRR 424856 696088906 113 563970032 112 >KQRNKR 110866 678962160 87 1023118760 88 >KQRPKR 329993 2069855830 149 3746111779 150 >KQRRKR 81998 246328793 81 683209859 82 >KRBBKR 121787 815254179 139 795943021 140 >KRBKQR 54376 60403494 129 7176017 128 >KRBKRB 62467 558544458 129 68163464 128 >KRBKRR 56590 46934987 133 6850121 132 >KRBNKR 131406 1621032003 135 1249681979 136 >KRBPKR 311575 4691404903 151 4585986662 152 >KRKQBB 19942 6021257 61 5967701 6 >KRKQBN 23232 7374862 79 6402464 60 >KRKQBP 67545 49797631 77 20721167 68 >KRKQNN 24266 8042923 81 5996962 68 >KRKQNP 104173 123187152 133 21034570 126 >KRKQPP 80602 387265124 83 20308922 78 >KRKQQB 17771 5799312 51 5845019 6 >KRKQQN 21387 5884460 77 5856010 6 >KRKQQP 54465 20018808 55 18789740 6 >KRKQQQ 9890 5648101 7 5628973 6 >KRKQQR 9686 5760118 7 5794036 6 >KRKQRB 18535 6157489 53 6334517 6 >KRKQRN 22505 6409825 79 6305985 6 >KRKQRP 52386 26195616 57 20419355 48 >KRKQRR 9968 5839264 7 5884821 6 >KRNKQR 31582 40756874 73 6891222 70 >KRNKRB 181544 532653480 73 47539498 72 >KRNKRN 182437 633633087 103 59911833 102 >KRNKRR 53265 31247335 73 6607222 70 >KRNPKR 322138 4959158626 169 4558331725 170 >KRPKQR 257582 660773785 235 33211534 224 >KRPKRR 220795 734378250 149 72391611 148 >KRPPKR 258491 1806511454 189 2200757722 190 >KRRBKR 82773 629065508 137 559091788 138 >KRRKQR 49265 277825100 65 35754296 64 >KRRKRB 83225 614558904 133 150419097 132 >KRRKRN 138858 753078894 177 315051543 178 >KRRKRR 61544 258742167 79 45661712 78 >KRRNKR 74479 613173287 89 517953298 90 >KRRPKR 250624 1739999970 149 2354960874 150 >KRRRKR 83699 139427358 65 264648675 66 imressive! Do you expect, to create all 6-pieces? How many GBs do you expect?
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.