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Subject: Re: Of course using search times it doesn't work

Author: Robert Hyatt

Date: 19:30:48 11/21/02

Go up one level in this thread


On November 21, 2002 at 21:38:43, Vincent Diepeveen wrote:

>On November 20, 2002 at 16:55:41, Gian-Carlo Pascutto wrote:
>
>Of course it doesn't work for you. you compare searchtimes
>with each other. In his article he compares search depths with
>each other. He claims 10 ply fullwidth is better finding
>a bit more at testsets than 10 ply
>with nullmove for tactical reasons,
>forgetting to tell of course what time it takes to get it.
>
>You are comparing search depths which is correct. He isn't.
>See his article.


If you would read his article more carefully, you might notice that he
reports that the "verified search" node counts are actually a bit smaller
with verified R=3 than they are with normal R=2.  That means that comparing
the depths as he does is _not_ worthless...

Also I assume you _meant_ to say "time" rather than "depth" above...



>
>>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' :)
>>
>>--
>>GCP



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Last modified: Thu, 07 Jul 11 08:48:38 -0700

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