Author: Vincent Diepeveen
Date: 18:43:01 11/21/02
Go up one level in this thread
On November 20, 2002 at 17:31:57, Omid David Tabibi wrote: this is a big nonsense statement. His Qsearch is way more efficient than yours i'm very convinced of it. This stuff won't work in crafty either of course. And crafty's qsearch is even way more limited than the one from Sjeng. This is not a qsearch issue. You are giving wrong reasons. Please post a time table of your program needing to find tricks at a minute or 3 a move a position versus your 'verification search'. Don't post a search depth table. Search depths is not important here except if you put it against the time you need to get it. I bet your nullmove implementation doesn't even have a bugfix for repetition of moves. >On November 20, 2002 at 16:55:41, Gian-Carlo Pascutto wrote: > >>Nullmove in Deep Sjeng uses an algorithm of my own, but I can >>switch it back to other systems easily. I did so for running >>a few tests. >> >>I made a version which uses Heinz Adaptive Nullmove Pruning >>and a version which uses your verification nullmove. >> >>I did a run over ECM-GCP, at 10 seconds per position. >> >>giancarlo@garf:~/sjeng > ./compare3.pl 240 241 >>Comparing 240 vs 241 >>Pos: 1 | Bg4 | - | - | 9.6 | 9.0 | 10 | 9 | 6077427 | >>5854404 >>Pos: 2 | Nxg4 | Bb5 | Bb5 | 8.6 | 8.6 | 607 | 974 | 3261400 | >>6097488 >>Pos: 3 | Nd5 | - | - | 10.0 | 9.6 | 110 | 253 | 3937003 | >>4249315 >>Pos: 4 | Bxd5 | - | - | 10.6 | 9.6 | 113 | 103 | 6635622 | >>4312132 >>Pos: 5 | Rxc8 | Qxa3 | Rxd6 | 10.0 | 10.0 | 522 | 752 | 3438275 | >>5570487 >>Pos: 6 | Rxa1 | - | - | 10.0 | 9.6 | 298 | 261 | 4600660 | >>4362616 >>Pos: 7 | Nxc6 | Bf3 | Bf3 | 8.6 | 9.0 | 0 | 0 | 3282289 | >>4955546 >>Pos: 8 | d3 | - | - | 10.6 | 10.6 | 210 | 301 | 4525770 | >>6204639 >>Pos: 9 | Qxf7+ | - | - | 9.6 | 10.6 | 934 | 100 | 6514297 | >>7121127 >>Pos: 10 | Rxb2+ | - | - | 9.0 | 8.3 | 179 | 167 | 5321098 | >>3294826 >>Pos: 11 | Nxf7 | - | - | 9.6 | 9.0 | 66 | 90 | 5011237 | >>6148378 >>Pos: 12 | Rxd4 | Nh5 | Nh5 | 9.6 | 9.0 | 0 | 0 | 4255664 | >>4621228 >>Pos: 13 | g6 | - | - | 9.6 | 9.6 | 13 | 13 | 3619239 | >>5454250 >>Pos: 14 | Kg2 | Qh6 | Qh6 | 9.0 | 9.0 | 709 | 770 | 3639929 | >>4113976 >>Pos: 15 | Nh7 | - | - | 10.6 | 10.6 | 18 | 15 | 4676206 | >>5788576 >>Pos: 16 | Nxc5 | - | - | 8.6 | 8.3 | 758 | 895 | 5778234 | >>5874884 >>Pos: 17 | Rd4 | - | - | 10.0 | 9.6 | 117 | 146 | 5407879 | >>4976856 >>Pos: 18 | exf6 | - | - | 9.0 | 9.0 | 230 | 278 | 4226676 | >>5089733 >>Pos: 19 | Nh6+ | - | - | 9.6 | 9.0 | 222 | 246 | 5022900 | >>4234842 >>Pos: 20 | Re7 | - | - | 10.6 | 10.0 | 27 | 33 | 5345105 | >>4663622 >>Pos: 21 | Qxc3+ | - | - | 10.0 | 9.6 | 52 | 47 | 4410530 | >>5960068 >>Pos: 22 | Qxh3+ | - | - | 8.6 | 8.0 | 8 | 6 | 2921917 | >>4206605 >>Pos: 23 | Qxf5+ | - | - | 11.0 | 10.0 | 19 | 20 | 6491996 | >>7303350 >>Pos: 24 | Nxh7 | O-O | O-O | 9.0 | 9.0 | 876 | 743 | 5421985 | >>4950831 >>Pos: 25 | Rxf6 | - | - | 10.6 | 9.3 | 307 | 685 | 5385906 | >>3588158 >>Pos: 26 | Nf6+ | - | - | 9.0 | 8.3 | 17 | 17 | 4900798 | >>4574982 >>Pos: 27 | Nxh5 | - | - | 10.6 | 10.0 | 67 | 74 | 4237081 | >>4807855 >>Pos: 28 | Rxe7 | f4 | Re2 | 9.6 | 10.0 | 0 | 0 | 4226886 | >>3927724 >>Pos: 29 | Rxd5 | - | - | 7.6 | 7.6 | 2 | 2 | 2066506 | >>2593429 >>Pos: 30 | d3+ | Rf8 | Rf8 | 8.6 | 8.6 | 313 | 344 | 1758501 | >>1930475 >>Pos: 31 | Bd5+ | - | - | 10.0 | 9.0 | 58 | 64 | 5724868 | >>4706264 >>Pos: 32 | Ba3 | Ne2 | Ne2 | 10.0 | 9.6 | 0 | 0 | 3227035 | >>4476823 >>Pos: 33 | g6 | - | - | 9.0 | 8.3 | 427 | 596 | 4353643 | >>5058109 >>Pos: 34 | Ra8 | Rb8 | Rb8 | 9.6 | 9.6 | 753 | 772 | 4702685 | >>5176154 >>Pos: 35 | g4+ | - | - | 10.6 | 10.6 | 83 | 91 | 2943640 | >>5467988 >>Pos: 36 | Ba4 | - | - | 10.0 | 10.0 | 711 | 451 | 5497145 | >>5758253 >>Pos: 37 | Nxf7 | - | - | 8.6 | 8.6 | 5 | 5 | 3366684 | >>4527366 >>Pos: 38 | Nf2+ | - | - | 11.0 | 10.0 | 52 | 46 | 10037221 | >>11187940 >>Pos: 39 | Ne4 | - | - | 8.6 | 9.0 | 411 | 426 | 4560487 | >>4305261 >>Pos: 40 | Nb6 | - | Qf3 | 10.0 | 10.0 | 151 | 1000 | 2540391 | >>5607155 >>Pos: 41 | Bxc2 | - | - | 9.6 | 9.6 | 245 | 258 | 2621935 | >>4644411 >>Pos: 42 | Bxc5 | - | - | 10.6 | 10.6 | 35 | 34 | 4275866 | >>5873212 >>Pos: 43 | Rxd5 | - | - | 9.6 | 9.6 | 15 | 16 | 3982771 | >>4616454 >>Pos: 44 | Rb3 | - | - | 9.6 | 9.6 | 117 | 116 | 3276091 | >>5396892 >>Pos: 45 | Bf4 | - | - | 9.0 | 8.3 | 379 | 485 | 5342912 | >>4745199 >>Pos: 46 | Re7 | - | - | 9.0 | 8.3 | 122 | 132 | 4962305 | >>1752502 >>Pos: 47 | Nxe3 | - | - | 8.6 | 8.6 | 33 | 34 | 1103855 | >>2143169 >>Pos: 48 | Ra2+ | - | - | 8.0 | 8.3 | 193 | 177 | 2844140 | >>4453366 >>Pos: 49 | Bg7 | - | - | 9.0 | 9.0 | 13 | 13 | 3384906 | >>4291700 >>Pos: 50 | Qc1 | - | - | 9.6 | 9.6 | 131 | 140 | 2149000 | >>2442977 >>Pos: 51 | Rxc5 | - | - | 9.6 | 9.6 | 262 | 200 | 4082180 | >>5498740 >>Pos: 52 | Rxd6 | - | - | 10.6 | 9.6 | 27 | 29 | 4354735 | >>3509118 >>Pos: 53 | Rh4+ | Rg4 | Qh5+ | 8.6 | 7.6 | 0 | 0 | 5629324 | >>5993724 >>Pos: 54 | Bh7+ | Qb3 | Qb1 | 9.0 | 9.6 | 0 | 0 | 4824788 | >>5501309 >>Pos: 55 | Bxf7+ | - | - | 8.0 | 7.3 | 66 | 78 | 5229564 | >>3288573 >>Pos: 56 | Bb7 | - | - | 11.0 | 10.0 | 6 | 8 | 5548401 | >>4394668 >>Pos: 57 | Rxd7 | Rxd7+ | Rxd7+ | 9.0 | 9.0 | 592 | 740 | 3170022 | >>4084424 >>Pos: 58 | Bxh6 | - | - | 10.6 | 9.6 | 24 | 146 | 4597345 | >>4302558 >>Pos: 59 | Rxh8+ | - | - | 9.0 | 8.3 | 76 | 246 | 3395839 | >>1316383 >>Pos: 60 | Bh7+ | - | - | 9.6 | 9.0 | 27 | 26 | 4733505 | >>4606647 >>Pos: 61 | Nxf7 | - | - | 9.6 | 9.6 | 98 | 142 | 3070161 | >>3799728 >>Pos: 62 | Bg3+ | - | - | 9.6 | 9.0 | 351 | 149 | 6053895 | >>5138173 >>Pos: 63 | Rb1+ | - | - | 12.0 | 11.0 | 24 | 26 | 11787829 | >>9532525 >>Pos: 64 | Rxc3 | - | - | 8.6 | 8.0 | 5 | 4 | 4024352 | >>3401443 >>Pos: 65 | Nxg7 | - | - | 9.0 | 9.3 | 217 | 814 | 5388306 | >>5498831 >>Pos: 66 | Bxg6+ | - | - | 9.0 | 9.0 | 62 | 35 | 4363706 | >>4596788 >>Pos: 67 | Qh6+ | Qd2 | Qd2 | 8.6 | 8.0 | 0 | 0 | 4744042 | >>5250455 >>Pos: 68 | Nxg7 | Nxe7+ | Nxe7+ | 9.6 | 9.0 | 0 | 0 | 5046980 | >>4140334 >>Pos: 69 | Rxb2 | Be5 | Rb4 | 9.0 | 9.0 | 675 | 862 | 3278810 | >>4422394 >>Pos: 70 | Qxg6+ | - | - | 10.6 | 9.6 | 13 | 13 | 10541368 | >>9760632 >>Pos: 71 | e4 | - | - | 7.6 | 7.3 | 261 | 358 | 4537465 | >>2034713 >>Pos: 72 | Re7 | - | - | 9.6 | 9.0 | 32 | 45 | 5576040 | >>5132876 >>Pos: 73 | R1b4 | - | - | 9.6 | 9.0 | 197 | 190 | 5874608 | >>6237045 >>Pos: 74 | Re4 | - | - | 10.6 | 10.0 | 47 | 34 | 5267152 | >>3315835 >>Pos: 75 | Nd5 | - | - | 8.6 | 8.6 | 38 | 54 | 4058409 | >>5236853 >>Pos: 76 | Rxe7 | - | - | 10.0 | 8.3 | 3 | 4 | 5664769 | >>6006027 >>Pos: 77 | Rxd7 | Bd2 | Bd2 | 9.0 | 9.0 | 757 | 537 | 3411782 | >>2685151 >>Pos: 78 | Qh6 | - | - | 11.6 | 11.6 | 27 | 79 | 4639870 | >>7283884 >>Pos: 79 | Rxe6 | - | - | 11.0 | 10.6 | 155 | 137 | 5358500 | >>4752928 >>Pos: 80 | Rxc8+ | Rc6 | Rc6 | 8.6 | 8.0 | 0 | 0 | 5528855 | >>3992712 >>Pos: 81 | Rxe4 | - | - | 9.6 | 9.6 | 8 | 11 | 3624257 | >>4950719 >>Pos: 82 | Rxd4 | Bxe5 | Bxe5 | 11.0 | 10.6 | 0 | 0 | 5716052 | >>4861479 >>Pos: 83 | Rxe5 | cxd5 | cxd5 | 8.6 | 8.6 | 496 | 585 | 2298605 | >>3147240 >>Pos: 84 | Rxc5 | - | - | 11.0 | 10.6 | 101 | 381 | 6354130 | >>7246151 >>Pos: 85 | Rxe7 | Qh6 | Qh6 | 8.6 | 8.6 | 625 | 646 | 3132419 | >>3685817 >>Pos: 86 | Nxe6 | Qf3 | Qf3 | 9.6 | 9.6 | 786 | 680 | 4367004 | >>4204082 >>Pos: 87 | Rxe3 | - | - | 10.6 | 9.6 | 4 | 4 | 5138871 | >>3193802 >>Pos: 88 | Rxd7 | - | - | 10.0 | 9.3 | 393 | 527 | 3915536 | >>3892878 >>Pos: 89 | Rxc1 | Rc5 | - | 10.0 | 9.6 | 1000 | 643 | 5032185 | >>4521420 >>Pos: 90 | Rxd4 | Be3 | Be3 | 10.0 | 10.0 | 879 | 935 | 4970703 | >>5330804 >>Pos: 91 | Rxd8 | Qe3 | h3 | 9.0 | 9.0 | 511 | 611 | 2871068 | >>3325591 >>Pos: 92 | Rxg6+ | - | - | 10.6 | 10.0 | 264 | 95 | 4942753 | >>4938838 >>Pos: 93 | Bd8 | Bd2 | Rf2 | 8.6 | 8.3 | 0 | 0 | 4865999 | >>4780042 >>Pos: 94 | Bh2 | O-O-O | O-O-O | 8.6 | 9.0 | 0 | 0 | 1772729 | >>2776425 >>Pos: 95 | Bxe5+ | Be2 | Be2 | 11.0 | 10.0 | 0 | 0 | 6398331 | >>4423433 >>Pos: 96 | Bc3 | - | - | 10.6 | 10.0 | 61 | 87 | 5290073 | >>4972909 >>Pos: 97 | Rxc4 | Rc1 | Rc1 | 9.0 | 9.0 | 549 | 710 | 3210360 | >>4335553 >>Pos: 98 | d4 | - | - | 9.6 | 9.6 | 104 | 81 | 4497801 | >>4718851 >>Pos: 99 | Nf6+ | - | - | 9.6 | 8.6 | 63 | 85 | 4298969 | >>3406295 >>Pos: 100 | Rxe3 | - | - | 10.6 | 9.6 | 78 | 53 | 4868562 | >>3773399 >>Pos: 101 | Rxa6 | Ng5 | Ng5 | 10.0 | 9.6 | 0 | 0 | 4388876 | >>4132292 >>Pos: 102 | Rhg8 | - | Qxa2 | 9.6 | 9.6 | 222 | 1000 | 3616017 | >>3650119 >>Pos: 103 | Rxd3 | - | - | 9.0 | 9.0 | 179 | 226 | 3741093 | >>5658021 >>Pos: 104 | e5 | - | Qb2 | 10.3 | 10.0 | 965 | 1000 | 6088236 | >>5379540 >>Pos: 105 | Rxh5 | - | - | 8.6 | 9.0 | 24 | 68 | 2356619 | >>4698216 >>Pos: 106 | Nxe5 | d4 | Kh1 | 10.0 | 10.0 | 833 | 856 | 4989337 | >>4295382 >>Pos: 107 | Rxc4 | - | - | 11.6 | 10.6 | 99 | 236 | 5687878 | >>5521472 >>Pos: 108 | Rxf6 | - | - | 8.6 | 8.6 | 45 | 43 | 2759174 | >>2965453 >>Pos: 109 | e6 | - | - | 7.6 | 7.6 | 158 | 158 | 2048097 | >>2608366 >>Pos: 110 | Bd2 | Bg5 | Bg5 | 9.6 | 9.6 | 724 | 893 | 4016174 | >>5128796 >>Pos: 111 | Nxe4 | - | - | 9.6 | 9.3 | 209 | 764 | 4497980 | >>4184511 >>Pos: 112 | Ng5 | - | - | 8.6 | 8.6 | 351 | 123 | 2180358 | >>3535476 >>Pos: 113 | bxc6 | - | - | 9.0 | 9.0 | 76 | 86 | 5071942 | >>4964637 >>Pos: 114 | Rxf6 | - | - | 10.3 | 10.0 | 439 | 88 | 2618951 | >>3557999 >>Pos: 115 | Bxh6 | - | - | 10.0 | 9.6 | 49 | 87 | 4796785 | >>3454241 >>Pos: 116 | Bh4 | Bd5 | Bd5 | 9.0 | 8.6 | 0 | 0 | 3914415 | >>2527820 >>Pos: 117 | Bf8 | Kb1 | Kb1 | 9.0 | 9.0 | 272 | 364 | 1298119 | >>1804183 >>Pos: 118 | Ng6+ | - | - | 9.6 | 9.6 | 98 | 120 | 3788493 | >>6213735 >>Pos: 119 | Qb2 | Qf3 | Rf3 | 9.0 | 9.0 | 806 | 841 | 4112386 | >>4709754 >>Pos: 120 | Qxg5+ | - | - | 10.6 | 9.6 | 102 | 361 | 3153891 | >>3670819 >>Pos: 121 | Rxh2+ | - | - | 13.6 | 13.0 | 22 | 22 | 6304711 | >>13168553 >>Pos: 122 | h4 | - | - | 8.6 | 8.6 | 337 | 400 | 3337879 | >>3545807 >>Pos: 123 | Bxh5 | - | - | 10.6 | 9.6 | 169 | 665 | 4628368 | >>3837163 >>Pos: 124 | Rxd5 | Bg2 | Bg2 | 9.0 | 9.3 | 0 | 0 | 2820742 | >>5386479 >>Pos: 125 | Rf6 | Rf5 | - | 10.0 | 9.6 | 1000 | 1 | 4742150 | >>4130608 >>Pos: 126 | Nc3+ | Ke8 | - | 9.0 | 8.6 | 1000 | 35 | 3434579 | >>2950131 >>Pos: 127 | Nxf5+ | - | - | 9.0 | 8.3 | 193 | 252 | 4840098 | >>3771390 >>Pos: 128 | Ne6 | - | - | 9.6 | 9.6 | 19 | 1 | 3607277 | >>4119862 >>Pos: 129 | Nxh6 | - | - | 9.6 | 9.6 | 16 | 14 | 3443946 | >>4462823 >>Pos: 130 | Bg5 | Ne3 | Ne3 | 10.0 | 9.6 | 0 | 0 | 5177733 | >>3911402 >>Pos: 131 | Bh3 | axb5 | axb5 | 8.6 | 8.6 | 537 | 565 | 2411959 | >>2865414 >>Pos: 132 | Nd6 | - | - | 10.0 | 10.0 | 45 | 35 | 2698967 | >>2337648 >>Pos: 133 | Nxf4 | - | - | 9.6 | 9.0 | 196 | 68 | 2982217 | >>2956597 >>Pos: 134 | f3 | Rf7 | Qf6 | 8.0 | 8.0 | 580 | 435 | 2781573 | >>2313360 >>Pos: 135 | Nxf3 | Rf7 | Rf7 | 9.0 | 9.0 | 304 | 257 | 1474063 | >>1342188 >>Pos: 136 | Rxe6 | - | - | 10.6 | 10.0 | 75 | 105 | 5104159 | >>4986142 >>Pos: 137 | Nxf5 | - | - | 8.6 | 8.6 | 547 | 575 | 4619606 | >>5139605 >>Pos: 138 | Rxf4+ | - | - | 9.6 | 8.6 | 100 | 109 | 4469998 | >>3281839 >>Pos: 139 | Bxf6 | - | - | 10.6 | 10.0 | 175 | 222 | 6536642 | >>6755401 >>Pos: 140 | Nf3+ | - | - | 8.6 | 9.0 | 638 | 433 | 3627580 | >>4533224 >>Pos: 141 | Nf5+ | - | - | 9.6 | 9.0 | 65 | 61 | 3518819 | >>4520289 >>Pos: 142 | Bxh4 | - | - | 9.0 | 9.0 | 388 | 455 | 4171656 | >>3376410 >>Pos: 143 | Nxf7 | - | - | 8.6 | 8.6 | 616 | 536 | 3474168 | >>4272427 >>Pos: 144 | Rxc5 | Ne5 | Ne5 | 10.6 | 10.6 | 528 | 716 | 3054497 | >>4254222 >>Pos: 145 | Bh3 | - | - | 10.6 | 10.0 | 112 | 142 | 5161728 | >>4028931 >>Pos: 146 | Nxc6 | - | - | 10.6 | 10.6 | 587 | 495 | 3763154 | >>4597121 >>Pos: 147 | h3 | Be3 | Be3 | 9.0 | 9.0 | 794 | 891 | 4220587 | >>4976541 >>Pos: 148 | Be6 | - | - | 10.0 | 10.6 | 23 | 25 | 2618110 | >>5680184 >>Pos: 149 | Nxh2 | Qg5 | Bf5 | 9.6 | 9.0 | 0 | 0 | 5377920 | >>2635147 >>Pos: 150 | f4 | - | - | 12.0 | 12.0 | 130 | 130 | 5592310 | >>5428767 >>Pos: 151 | Rxc6 | - | Rd6 | 13.3 | 13.3 | 528 | 1000 | 3834208 | >>3059267 >>Pos: 152 | f6 | - | - | 8.6 | 8.6 | 202 | 235 | 3204718 | >>4677819 >>Pos: 153 | e5 | Ba6 | Ba6 | 10.6 | 9.6 | 0 | 0 | 4802799 | >>3248246 >>Pos: 154 | b5 | - | Qf4 | 9.6 | 9.6 | 624 | 1000 | 6965856 | >>5346725 >>Pos: 155 | Rxa6 | - | - | 10.6 | 9.6 | 657 | 789 | 5407643 | >>5346630 >>Pos: 156 | Rc4 | - | - | 13.6 | 12.0 | 432 | 659 | 7487082 | >>5671496 >>Pos: 157 | Nxe6 | - | - | 11.6 | 11.0 | 9 | 13 | 4548799 | >>5596912 >>Pos: 158 | Ba6 | - | Kf3 | 9.6 | 10.0 | 99 | 1000 | 5539155 | >>4959716 >>Pos: 159 | Nxa7 | Rfe1 | Bf4 | 9.6 | 9.6 | 492 | 268 | 2897038 | >>1822645 >>Pos: 160 | Rxb2 | c3 | c3 | 13.0 | 11.6 | 0 | 0 | 5964974 | >>5060726 >>Pos: 161 | cxb6 | - | - | 11.6 | 11.6 | 80 | 105 | 5350193 | >>6474694 >>Pos: 162 | f5 | Rxe8+ | Rxe8+ | 11.6 | 10.6 | 0 | 0 | 6109265 | >>5605217 >>Pos: 163 | Bxb3 | c4 | c4 | 13.0 | 13.0 | 577 | 569 | 2893519 | >>3875034 >>Pos: 164 | Bxh7+ | - | - | 9.6 | 9.0 | 41 | 32 | 6332861 | >>4512055 >>Pos: 165 | Bxh7+ | e6 | e6 | 9.0 | 8.6 | 0 | 0 | 4859339 | >>3653444 >>Pos: 166 | Bxh7+ | - | - | 9.6 | 8.6 | 28 | 30 | 3303891 | >>1425061 >>Pos: 167 | Bxh7+ | - | - | 9.6 | 9.0 | 238 | 345 | 6846323 | >>5489967 >>Pos: 168 | Rxh7+ | - | - | 9.0 | 8.6 | 176 | 171 | 4850390 | >>3566893 >>Pos: 169 | Rxh7 | - | - | 10.0 | 10.3 | 85 | 900 | 4214401 | >>4143596 >>Pos: 170 | Bxh7+ | - | - | 9.6 | 8.6 | 54 | 54 | 6450279 | >>4778717 >>Pos: 171 | Nxh7 | Ng4 | Ng4 | 9.6 | 9.6 | 960 | 708 | 4352144 | >>4042034 >>Pos: 172 | Nxh2 | - | - | 9.0 | 9.0 | 200 | 205 | 4685585 | >>5393321 >>Pos: 173 | Bxh7+ | - | - | 8.6 | 8.6 | 71 | 145 | 2870316 | >>4785799 >>Pos: 174 | Qxh7+ | - | - | 12.6 | 11.0 | 67 | 82 | 12637945 | >>10455002 >>Pos: 175 | Bxh7+ | - | - | 7.6 | 7.6 | 347 | 312 | 4315370 | >>3869957 >>Pos: 176 | Nxh7 | Bxe6 | Bxe6 | 9.6 | 9.3 | 0 | 0 | 5229866 | >>4912906 >>Pos: 177 | Rxh7 | - | - | 9.6 | 9.6 | 77 | 183 | 3600114 | >>3629262 >>Pos: 178 | Nxh7 | e6 | e6 | 10.0 | 9.0 | 0 | 0 | 4807546 | >>3450169 >>Pos: 179 | Bxh7+ | Bh3 | Bg4 | 10.0 | 9.6 | 0 | 0 | 4677874 | >>3538094 >>Pos: 180 | Bxh7+ | - | - | 9.0 | 9.0 | 201 | 11 | 2818734 | >>2670067 >>Pos: 181 | Rxh2 | Nxg4 | Qb8 | 10.0 | 9.6 | 0 | 0 | 3351722 | >>4534124 >>Pos: 182 | Nxh7 | Bd2 | Bd2 | 10.6 | 10.6 | 618 | 591 | 3581004 | >>3927991 >>Pos: 183 | Rxh7 | - | - | 9.6 | 9.6 | 92 | 341 | 3023799 | >>5486345 >> >>Warning: node count is different! >> >>Node count is for same depth only. >> >> Old New Ratio >>----------------------------------------------------- >>Nodes: 276192044 332673312 120.45% >>Time: 42505 47998 112.92% >>Depth: 9.73 9.41 -0.32 >>Solved: 126 123 >> >>So, you can see here that verification nullmove searches 20% more >>nodes, took 12% more time, searched 1/3 of a ply less deep and >>missed three more positions. >> >>That's pretty much a 'total loss' :) >> > >That is a typical result when the quiescence search is too big. With the help of >its extensions, even the standard version of your algorithm manages to detect >most of the problems that verified null-move is meant to detect. So the >verification search is just a waste of time in this case (and since your test >was conducted in a fixed time per position, this waste of time didn't enable the >verified version to reach deeper and detect what the other version did). > >Solution: > >By shifting to a far simpler quiescence search, you will get about the same >tactical strength as you get currently (since this time, verified null-move will >detect the problems, instead of your immense quiescence), but will end up with a >significantly smaller search tree. > >The quiescence search of Genesis which I conducted the tests on, consisted of >only captures/recaptures. > > >>-- >>GCP
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