Author: Pedro Castro
Date: 18:32:14 04/30/05
Hello, I have a pair of questions on the evaluation of this position. [D] r2q1rk1/ppp2p2/3pn3/3Np1pn/2B1P3/3PQP2/PPP2P2/1K1R2R1 w - - 0 18 I have changed in my program DanaSah the evaluation of queen, of 900 points (100 pawn) to 1000 and with this change the evaluation happens of +1 for the white to +2, because?, both sides have queens, would not have to be the same valuation that before? 1) DanaSah whith queen 900 DanaSah v1.3.4: 1 00:00 202 202 +0,63 Th1 2 00:00 1.834 183.400 +0,51 Th1 Chf4 3 00:00 5.784 289.200 +0,50 Th1 Chf4 Th6 Cxd5 Axd5 4 00:00 39.450 438.333 +0,50 Th1 Chf4 Th6 Cxd5 Axd5 5 00:00 103.948 415.792 +0,50 Th1 Chf4 Th6 Cxd5 Axd5 6 00:00 288.624 473.154 +0,50 Th1 Chf4 Th6 Cxd5 Axd5 Cc5 7 00:01 678.099 480.921 +0,60 Th1 Cef4 d4 Te8 dxe5 Txe5 Cc3 8 00:03 2.062.866 493.508 +0,61 Th1 Cef4 d4 exd4 Db3 c6 Cxf4 Cxf4 Dxb7 9 00:04 2.196.816 519.341 +0,76 Th1 Cef4 d4 exd4 Db3 c6 Cxf4 Cxf4 Dxb7 9 00:06 3.217.052 516.380 +1,02 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Rh7 Axe6 fxe6 Txg7+ Dxg7 Txg7+ Rxg7 10 00:12 6.705.117 516.175 +0,87 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Rh7 Axe6 fxe6 Txg7+ Dxg7 Txg7+ Rxg7 10 00:20 10.413.744 520.687 +1,05 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Rh7 Axe6 fxe6 Txg7+ Dxg7 Txg7+ Rxg7 c3 11 00:32 16.990.821 526.520 +1,02 Cxc7 Dxc7 Txg5+ Ceg7 Th1 Cf4 Thg1 Cfe6 Axe6 fxe6 Txg7+ Dxg7 Txg7+ Rxg7 12 00:38 20.042.944 527.029 +1,17 Cxc7 Dxc7 Txg5+ Ceg7 Th1 Cf4 Thg1 Cfe6 Axe6 fxe6 Txg7+ Dxg7 Txg7+ Rxg7 2) DanaSah whith queen 1000 (also other nullmove but nullmove no change eval) DanaSah v1.4: 1 00:00 202 202 +0,65 Th1 2 00:00 1.878 1.878 +0,53 Th1 Chf4 3 00:00 6.005 600.500 +0,52 Th1 Chf4 Th6 Cxd5 Axd5 4 00:00 43.903 487.811 +0,52 Th1 Chf4 Th6 Cxd5 Axd5 5 00:00 115.366 501.591 +0,52 Th1 Chf4 Th6 Cxd5 Axd5 6 00:00 297.511 531.269 +0,52 Th1 Chf4 Th6 Cxd5 Axd5 Cc5 7 00:01 849.075 511.490 +0,62 Th1 Cef4 d4 Te8 dxe5 Txe5 Cc3 8 00:04 2.671.029 536.351 +0,62 Th1 Cef4 d4 exd4 Dxd4 Te8 Ab5 c6 9 00:05 2.876.880 524.978 +0,77 Th1 Cef4 d4 exd4 Dxd4 Te8 Ab5 c6 9 00:07 4.227.650 529.117 +1,61 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 d5 Txg7+ Cxg7 Dh6 f5 Axd5+ Tf7 Txg7+ 10 00:15 8.074.318 529.463 +1,46 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 d5 Txg7+ Cxg7 Dh6 f5 Axd5+ Tf7 Txg7+ 10 00:18 9.449.195 524.955 +1,76 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 d5 Txg7+ Cxg7 Dh6 f5 Axd5+ Tf7 Txg7+ 10 00:25 13.080.452 523.008 +1,87 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Rh7 Axe6 fxe6 Txg7+ Dxg7 Txg7+ Rxg7 c3 11 00:37 19.988.258 532.594 +1,72 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Rh7 Axe6 fxe6 Txg7+ Dxg7 Txg7+ Rxg7 c3 11 00:50 27.331.167 546.623 +1,72 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Tfc8 Axe6 Dxc2+ Ra1 fxe6 Txg7+ Rf8 Txb7 Re8 12 00:55 30.016.204 545.749 +1,87 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Tfc8 Axe6 Dxc2+ Ra1 fxe6 Txg7+ Rf8 Txb7 Re8 Th1 (spanish) = Rh1 Cxc7 = Nxc7 On the other hand I see that although my program gives with the correct movement and does relatively well, but are programs that from first ply give almost one advantage of 2 points and them plus, that are valuing they who I do not value? king safety? I eval #define PAWN_DOUBLED -10 #define PAWN_ISOLATE -20 #define PAWN_BACKWARD -8 #define PAWN_PASSED_NO_ISOLATE 18 #define ROOK_OPEN_FILE 15 #define ROOK_SEMI-OPEN_FILE 10 #define CASTLING 20 #define LOST_CASTLE -7 #define BISHOP_TRAPED -100 #define BISHOP_PAIR 40 #define PAWN_BLOCKED -8 #define PIECE_NO_PLAYED_OPENING -8 #define QUEEN_EARLY_PLAYED -2 I also eval king safety Shredder 8: 1/2- 00:00 2 50 +2,00 Df4 exf4 1/2- 00:00 4 100 +1,50 Df4 exf4 1/2 00:00 6 150 -9,66 Df4 exf4 1/2+ 00:00 7 175 -1,51 f4 gxf4 1/2+ 00:00 11 275 -0,66 f4 Cexf4 1/4 00:00 20 500 +1,20 f4 Chxf4 1/8+ 00:00 42 1.050 +1,29 d4 Cxd4 Dxg5+ Dxg5 Txg5+ Cg7 1/8+ 00:00 59 1.475 +1,86 d4 exd4 1/8 00:00 61 1.525 +1,86 d4 exd4 1/8+ 00:00 62 1.550 +2,27 c3 1/8 00:00 63 1.575 +2,27 c3 2/4- 00:00 151 3.020 +1,92 c3 Chf4 2/4 00:00 181 3.620 +1,92 c3 Chf4 2/6+ 00:00 306 6.120 +2,01 Th1 Cd4 2/6 00:00 359 7.180 +2,20 Th1 Cef4 3/8 00:00 871 17.420 +1,99 Th1 Chf4 Cxf4 Cxf4 4/6 00:00 2.799 55.980 +2,14 Th1 Chf4 Cxf4 Cxf4 Tdg1 5/10 00:00 4.787 53.188 +2,15 Th1 Chf4 Tdg1 c6 Cxf4 Cxf4 6/12 00:00 9.278 92.780 +2,21 Th1 Chf4 Tdg1 c6 Cxf4 Cxf4 Th6 7/16 00:00 26.891 141.531 +2,02 Th1 Chf4 Tdg1 c6 Cxf4 Cxf4 c3 Df6 8/22 00:00 75.060 220.117 +2,07 Th1 c6 Txh5 cxd5 Axd5 Db6 Axe6 a5 Dxb6 9/16+ 00:00 110.791 230.334 +2,32 Th1 c6 Txh5 cxd5 Axd5 Db6 Dc1 Dc7 9/24 00:00 156.645 256.374 +2,43 Th1 Chf4 Th6 b5 Axb5 Cxd5 exd5 Cd4 Ad7 10/22- 00:00 193.583 264.819 +2,18 Th1 Chf4 Th6 b5 Axb5 Tb8 Cf6+ Rg7 Db6 cxb6 10/22 00:00 219.433 273.948 +2,18 Th1 Chf4 Th6 b5 Axb5 Rg7 Tdh1 f5 10/26+ 00:00 298.963 284.185 +2,19 Cxc7 Dxc7 Txg5+ Ceg7 Tdg1 a5 Txg7+ Cxg7 Dg5 Tfc8 Dxg7+ 10/26+ 00:00 312.905 283.942 +2,54 Cxc7 Dxc7 Txg5+ Ceg7 Tdg1 a5 Txg7+ Cxg7 Dg5 Tfc8 Dxg7+ 10/32 00:01 603.967 312.450 +4,21 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Tfd8 Txg7+ Cxg7 Dh6 Rf8 Txg7 d5 Txf7+ Rxf7 Dh7+ Rf8 Dxc7 dxc4 Dxc4 11/31 00:02 808.878 317.955 +4,32 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Tfd8 Txg7+ Cxg7 Dh6 Rf8 Txg7 d5 Txf7+ Rxf7 Dh7+ Rf8 Dxc7 dxc4 Dc5+ Rg8 Dxc4+ Rh8 12/36+ 00:03 1.075.430 322.467 +4,57 Cxc7 Dxc7 Txg5+ Chg7 Tdg1 Tfd8 Txg7+ Cxg7 Dh6 Rf8 Txg7 d5 Axd5 Tac8 Txf7+ Rg8 Txc7+ Txd5 Ply 1 c3 or Th1 +2 Ply 12 Cxc7 +5 Shredder +5 in ply 12, DanaSah +2 Best wishes, Pedro Castro
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.