Author: Vincent Diepeveen
Date: 07:10:02 08/14/02
Go up one level in this thread
On August 14, 2002 at 09:48:08, Uri Blass wrote: Ah as i expected an outdated Klamath series. K7 is 20% faster for each Mhz than a PIII is. i tested both diep, crafty and deepjunior7 for nearly same difference. Also it means 1 minute a program a move at 1 cpu, versus 2 here at 1.6Ghz :) >On August 14, 2002 at 08:40:45, Vincent Diepeveen wrote: > ><snipped> >>In the leo blitz games of course diep would go qxd1 too there at the blitz >>level with the new version. > >leo's time control is 40 minutes/40 moves and >he is using dual PIII1266. > > >> >>>By your definition of sacrifice Qxd1+ is a sacrifice. >> >>That is very obvious. you give away material for good mobility. >> >>>By my definition it is only a trade of material and >>>nobody sacrificed material. >> >>That is a wrong definition, because white wins material after qxd1. >> >>>I can imagine that I am going to have more mistakes >>>if I increase the evaluation of queen to more than 2 rooks. >> >>You could implement mobility and put it high. Qxd1 is not a winning >>move here. it is a speculative move. Just like in some mainlines in >>sicilian some GMs give up a queen for sometimes only rook + bishop. >> >>Good example is some dragon lines i play myself with white. Even Anand >>manages to get it a draw, but i would love to see DIEP - Anand in that >>position. Anand would get toasted of course. Computers are way better >>with more material. >> >>Another consideration is that you should print the number of times that >>movei is having queen+pawn versus 2 rooks, or even queen versus 2 rooks. >> >>You will see that the queen directly after that picks up material in >>95% of the cases. A queen grabs material simply easier than rooks. > >I have not a lot of games when I get 2 rooks >against queen but here is one example when >it did not happen and rooks of old movei >grabbed material and got a draw. > >[Event "Computer chess game"] >[Site "URI-PC"] >[Date "2002.02.18"] >[Round "-"] >[White "movei0056"] >[Black "resp_0_1_4"] >[Result "1/2-1/2"] >[TimeControl "40/300"] > >1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 Bg4 6. Be2 Nbd7 7. Nb5 >Qb6 8. Bf4 Nd5 9. Be5 Bxf3 10. gxf3 e6 11. c4 Nxe5 12. dxe5 Nf4 13. Qd2 >Nxe2 14. Qxe2 Bb4+ 15. Kf1 a6 16. Nc3 Bxc3 17. bxc3 O-O 18. Kg1 f6 19. f4 >fxe5 20. fxe5 Rf4 21. Rd1 Raf8 22. Rd2 Qb1+ 23. Kg2 Rxf2+ 24. Qxf2 Qe4+ 25. >Kg1 Rxf2 26. Rxf2 Qxc4 27. Kg2 Qd5+ 28. Rf3 Qxa2+ 29. Kf1 a5 30. h4 Qd5 31. >Kf2 Qxe5 32. h5 a4 33. Rh4 a3 34. Ra4 g6 35. hxg6 hxg6 36. c4 Qb2+ 37. Kg3 >a2 38. Rfa3 Qe5+ 39. Kf3 Qh5+ 40. Kg3 Qg5+ 41. Kf3 e5 42. Rxa2 Qf4+ 43. Ke2 >g5 44. c5 e4 45. R2a3 Qg4+ 46. Ke3 Qf5 47. Kd4 c6 48. Ra7 Qd5+ 49. Ke3 >Qxc5+ 50. Kxe4 Qd5+ 51. Ke3 b5 52. R3a6 b4 53. Ra5 c5 54. Re7 b3 55. Raa7 >Qd4+ 56. Ke2 Kf8 57. Reb7 Qe4+ 58. Kf2 Qf4+ 59. Ke2 Qh2+ 60. Ke3 Qh3+ 61. >Ke4 Qe6+ 62. Kd3 Qg6+ 63. Kc4 Qc2+ 64. Kb5 Qe2+ 65. Kxc5 Qf2+ 66. Kc4 Qf1+ >67. Kb4 Qe1+ 68. Ka3 Qa1+ 69. Kxb3 Qb1+ 70. Kc3 Qc1+ 71. Kd3 Qf1+ 72. Kd4 >Qf4+ 73. Kd5 Qf5+ 74. Kd6 Qf6+ 75. Kc5 Qe5+ 76. Kc4 Qe4+ 77. Kc3 Qf3+ 78. >Kd2 Qf2+ 79. Kc1 Qe1+ 80. Kc2 Qe2+ 81. Kb1 Qd1+ 82. Kb2 Qd2+ 83. Kb3 Qd3+ >84. Kb4 Qd4+ 85. Kb5 Qd5+ 86. Kb6 Qd6+ 87. Kb5 Qd8 88. Kc5 Qe8 89. Kd4 Qd8+ >90. Ke4 Qe8+ 91. Kf5 Qc8+ 92. Kxg5 Qc5+ 93. Kf4 Qd6+ 94. Ke4 Qe6+ 95. Kd4 >Qd6+ 96. Kc4 Qc6+ 97. Kb4 Qd6+ 98. Kc3 Qc5+ 99. Kd3 Qd5+ 100. Ke3 Qe5+ 101. >Kf3 Qf5+ 102. Ke2 Qe4+ 103. Kd2 Qd4+ 104. Kc2 Qc4+ 105. Kd1 Qd4+ 106. Kc1 >Qf4+ 107. Kb1 Qe4+ 108. Ka1 Qd4+ 109. Ka2 Qd2+ 110. Kb1 Qd1+ 111. Kb2 Qd2+ >112. Kb3 Qd3+ 113. Ka4 Qc4+ 114. Ka5 Qc5+ 115. Ka6 Qd6+ 116. Rb6 Qd3+ 117. >Kb7 Ke8 118. Rc6 Qb5+ 119. Kc7 Qe5+ 120. Kb6 Qb2+ 121. Ka6 Qe2+ 122. Ka5 >Qa2+ 123. Kb6 Qb2+ 124. Ka6 Qe2+ 125. Kb6 Qb2+ >1/2-1/2 > > ><snipped> >>That means that getting 2 rooks is directly like +13.0 with just >>mobility and that getting a good queen is +10.5 with good mobility >>if we assume 5+5 versus 9. >> >>You miss 2.5 pawns then for the queen! > >I have not that big score for mobility but >I consider mobility of rooks as a natural situation >so I may consider punishing rooks without mobility >in my evaluation when I change my evaluation to be >more complex. > >> >>>Reducing the evaluation of queen can also cause mistake so >>>I am not going to change it in the near future. >> >>You forgot to mention at which values the stuff is set at now. Also >>you do not have mobility i already know this for sure now. It is interesting >>to know what the values from quark are. I bet they are closer to DIEP >>than they are to Movei!! > >I use the number of legal moves in my evaluation >so I have mobility in my evaluation but >black's mobility based on this evaluation is >not bigger than white's mobility. > >It is not the optimal way to evaluate mobility >but it is clearly better than nothing and >I have games when movei won thanks >to it's mobility evaluation. > >Here is an example from a game against yace when >movei found the winning Qa4 thanks to it's mobility evaluation >(it is possible to find it for tactical reasons but >at the time control of the game movei >needed positional reasons) > >[D]2kr1b1r/ppp1pppp/2n5/2N1P2q/2bP4/4BN1P/PP3PP1/R2Q1RK1 w - - 0 14 > >My values for pieces are about 10 for queen and >5.2 for rook and 3.5 pawns for bishop or knight >so queen against rook bishop and pawn >is considered as a small advantage. > >Uri
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