Stockfish 180113 - Initial position until depth 70

[fastgm]

Stockfish 180113 64 POPCNT - Intel i3-2130 @ 3.4 GHz - 2 threads - 2048 MB Hash - Initial position

bf = branching factor, cp = centipawns, nps = nodes per second, hf = hashfull

Code: Select all

depth     time ms      DD:hh:mm:ss           nodes         bf    cp      nps       hf
--------------------------------------------------------------------------------------
 20           2.961    00:00:00:03            7.809.122   1.46   32   2.637.325    24
 21           4.007    00:00:00:04           10.399.247   1.33   30   2.595.270    34
 22           8.118    00:00:00:08           20.773.844   2.00   26   2.558.985    73
 23          11.769    00:00:00:12           29.580.482   1.42   22   2.513.423   110
 24          18.206    00:00:00:18           45.477.435   1.54   32   2.497.936   155
 25          21.969    00:00:00:22           55.381.467   1.22   38   2.520.891   203
 26          27.229    00:00:00:27           69.549.803   1.26   28   2.554.254   249
 27          34.406    00:00:00:34           88.341.585   1.27   32   2.567.621   312
 28          44.319    00:00:00:44          114.308.137   1.29   22   2.579.212   401
 29          51.010    00:00:00:51          131.493.550   1.15   22   2.577.799   454
 30          67.166    00:00:01:07          172.669.782   1.31   25   2.570.791   550
 31          95.972    00:00:01:36          245.796.848   1.42   27   2.561.130   706
 32         121.732    00:00:02:02          312.584.774   1.27   30   2.567.811   831
 33         195.528    00:00:03:16          504.220.842   1.61   25   2.578.765   947
 34         270.284    00:00:04:30          701.974.776   1.39   10   2.597.174   994
 35         542.696    00:00:09:03        1.423.172.418   2.03    8   2.622.411   999
 36         852.233    00:00:14:12        2.248.334.831   1.58    7   2.638.169   999
 37       1.025.618    00:00:17:06        2.704.202.685   1.20    9   2.636.656   999
 38       1.269.916    00:00:21:10        3.352.076.991   1.24    6   2.639.605   999
 39       1.821.664    00:00:30:22        4.843.938.257   1.45    9   2.659.073   999
 40       2.422.055    00:00:40:22        6.432.149.569   1.33   13   2.655.657   999
 41       2.687.778    00:00:44:48        7.139.720.058   1.11   25   2.656.365   999
 42       3.379.961    00:00:56:20        8.999.060.694   1.26    8   2.662.474   999
 43       6.255.902    00:01:44:16       16.685.266.411   1.85   19   2.667.124   999
 44      11.966.099    00:03:19:26       31.935.614.594   1.91   18   2.668.840   999
 45      13.996.185    00:03:53:16       37.305.243.123   1.17   18   2.665.386   999
 46      18.986.926    00:05:16:27       50.476.904.815   1.35   15   2.658.508   999
 47      29.555.211    00:08:12:35       78.749.855.020   1.56   16   2.664.499   999
 48      32.379.375    00:08:59:39       86.258.487.995   1.10   22   2.663.994   999
 49      38.171.214    00:10:36:11      102.087.328.823   1.18   18   2.674.458   999
 50      59.954.177    00:16:39:14      162.433.347.175   1.59   13   2.709.291   999
 51      68.229.137    00:18:57:09      184.638.998.399   1.14   13   2.706.160   999
 52     147.657.664    01:17:00:58      401.226.073.057   2.17   24   2.717.272   999
 53     176.568.889    02:01:02:49      481.184.993.983   1.20    9   2.725.196   999
 54     183.776.030    02:03:02:56      500.828.026.388   1.04   12   2.725.208   999
 55     612.348.337    07:02:05:48    1.683.626.096.810   3.36    8   2.749.458   999
 56     691.324.582    08:00:02:05    1.902.007.602.700   1.13    8   2.751.251   999
 57     942.416.277    10:21:46:56    2.600.369.228.395   1.37   12   2.759.257   999
 58   1.108.243.196    12:19:50:43    3.065.487.180.680   1.18   14   2.766.078   999
 59   1.133.362.443    13:02:49:22    3.136.008.925.222   1.02   15   2.766.995   999
 60   1.539.239.134    17:19:33:59    4.277.389.258.149   1.36    8   2.778.898   999
 61   2.017.290.614    23:08:21:31    5.614.261.530.698   1.31   12   2.783.070   999
 62   2.587.485.027    29:22:44:45    7.198.730.538.139   1.28    9   2.782.134   999
 63   2.785.825.750    32:05:50:26    7.749.378.651.635   1.08   15   2.781.717   999
 64   3.639.352.274    42:02:55:52   10.149.662.885.237   1.31    8   2.788.865   999
 65   6.125.138.474    70:21:25:38   17.288.598.093.977   1.70    8   2.822.564   999
 66   6.510.453.751    75:08:27:34   18.387.727.244.730   1.08    8   2.824.339   999
 67   7.462.845.087    86:09:00:45   21.068.240.925.795   1.15   16   2.823.084   999
 68   9.549.220.198   109:12:33:40   27.111.553.587.762   1.29   11   2.839.138   999
 69  12.613.582.864   144:23:46:23   35.925.549.032.091   1.33    8   2.848.164   999
 70  14.474.647.554   165:12:44:08   41.192.897.168.184   1.15    8   2.845.865   999
                                                        Ø 1.41

Console output:

Code: Select all

info depth 1 seldepth 1 multipv 1 score cp 92 nodes 77 nps 8555 tbhits 0 time 9 pv e2e4
info depth 2 seldepth 2 multipv 1 score cp 18 nodes 121 nps 13444 tbhits 0 time 9 pv d2d4 e7e6
info depth 3 seldepth 3 multipv 1 score cp 116 nodes 239 nps 26555 tbhits 0 time 9 pv d2d4 e7e6 e2e4
info depth 4 seldepth 4 multipv 1 score cp 8 nodes 788 nps 78800 tbhits 0 time 10 pv g1f3 d7d5 d2d4 g8f6
info depth 5 seldepth 5 multipv 1 score cp 20 nodes 1117 nps 111700 tbhits 0 time 10 pv g1f3 d7d5 d2d4 g8f6 c1f4
info depth 6 seldepth 6 multipv 1 score cp 2 nodes 3201 nps 291000 tbhits 0 time 11 pv g1f3 d7d5 e2e3 c8f5 d2d4 e7e6
info depth 7 seldepth 7 multipv 1 score cp 16 nodes 5830 nps 448461 tbhits 0 time 13 pv g1f3 d7d5 c2c3 c8f5 d2d4 g8f6 e2e3
info depth 8 seldepth 8 multipv 1 score cp 7 nodes 8848 nps 589866 tbhits 0 time 15 pv g1f3 d7d5 d2d4 g8f6 c2c3 e7e6 c1g5 h7h6
info depth 9 seldepth 11 multipv 1 score cp 15 nodes 15124 nps 796000 tbhits 0 time 19 pv d2d4 g8f6 b1c3 d7d5 e2e3 b8c6 f1b5 c8d7 g1f3
info depth 10 seldepth 14 multipv 1 score cp 22 nodes 48947 nps 1165404 tbhits 0 time 42 pv d2d4 d7d5 b1c3 g8f6 c1f4 a7a6 e2e3 e7e6 g1f3 f8b4
info depth 11 seldepth 15 multipv 1 score cp 67 nodes 111384 nps 1713600 tbhits 0 time 65 pv e2e4 d7d5 e4d5 g8f6 d2d4 d8d5 b1c3 d5e6 g1e2 c7c6 c1f4 e6f5 f4c7
info depth 12 seldepth 18 multipv 1 score cp 60 nodes 239188 nps 2214703 tbhits 0 time 108 pv e2e4 d7d5 e4d5 c7c6 d2d4 c6d5 g1f3 e7e6 f1d3 g8f6 b1c3 b8c6 e1g1 f8d6
info depth 13 seldepth 20 multipv 1 score cp 49 nodes 335464 nps 2266648 tbhits 0 time 148 pv e2e4 d7d5 e4d5 c7c6 d5c6 b8c6 g1f3 e7e5 b1c3 g8f6 f1b5 c8d7 e1g1 e5e4 d2d4 e4f3
info depth 14 seldepth 24 multipv 1 score cp 27 nodes 953545 nps 2354432 tbhits 0 time 405 pv d2d4 d7d5 g1f3 g8f6 c2c4 e7e6 e2e3 c7c5 f1d3 b8c6 e1g1 c5d4 e3d4 d5c4 d3c4
info depth 15 seldepth 20 multipv 1 score cp 26 nodes 1184901 nps 2408335 tbhits 0 time 492 pv d2d4 d7d5 g1f3 g8f6 c2c4 e7e6 e2e3 c7c5 c4d5 e6d5 c1d2 b8c6 f1b5 a7a6 b5c6 b7c6 f3e5
info depth 16 seldepth 21 multipv 1 score cp 16 nodes 1484349 nps 2494704 tbhits 0 time 595 pv d2d4 d7d5 g1f3 g8f6 c2c4 e7e6 e2e3 c7c5 c4d5 e6d5 c1d2 b8c6 f1b5 c8d7 e1g1 f8e7 d4c5 e8g8 d2c3 e7c5
info depth 17 seldepth 24 multipv 1 score cp 19 nodes 1974312 nps 2537676 tbhits 0 time 778 pv e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f8c5 f3e5 c6e5 d2d4 a7a6 d4e5 a6b5 e5f6 d8f6 b1c3 b5b4 c3e2
info depth 18 seldepth 26 multipv 1 score cp 30 nodes 2799060 nps 2582158 hashfull 7 tbhits 0 time 1084 pv e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3 d7d5 d4e5 b8c6 e1g1 f8e7 b1c3 e4c3 b2c3 e8g8 a1b1 a7a6 f1e1
info depth 19 seldepth 28 multipv 1 score cp 42 nodes 5347720 nps 2603563 hashfull 17 tbhits 0 time 2054 pv e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f8c5 f3e5 c6e5 d2d4 a7a6 b5e2 f6e4 d4c5 e4c5 d1d4 d7d6 f2f4 c5e6 d4e4 e5c6
info depth 20 seldepth 33 multipv 1 score cp 32 nodes 7809122 nps 2637325 hashfull 24 tbhits 0 time 2961 pv e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f8e7 b5c6 b7c6 f3e5 f6e4 d2d4 e8g8 f1e1 e4f6 b1c3 c8b7 c1g5 h7h6 g5f6 e7f6 e5g4
info depth 21 seldepth 27 multipv 1 score cp 30 nodes 10399247 nps 2595270 hashfull 34 tbhits 0 time 4007 pv e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 g8e7 f1d3 c8d7 e1g1 e7g6 c1e3 f8e7 b1d2 e8g8 h2h3 d8c7 d3g6 f7g6
info depth 22 seldepth 35 multipv 1 score cp 26 nodes 20773844 nps 2558985 hashfull 73 tbhits 0 time 8118 pv e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 g1f3 c5d4 f3d4 b8c6 d4c6 b7c6 f1d3 g8f6 e4e5 f6d7 d2f3 f8e7 e1g1 d7c5 c1e3 e8g8 f1e1
info depth 23 seldepth 32 multipv 1 score cp 22 nodes 29580482 nps 2513423 hashfull 110 tbhits 0 time 11769 pv d2d4 d7d5 g1f3 g8f6 c1f4 e7e6 e2e3 f8e7 c2c3 e8g8 b1d2 c7c5 f1e2 b8c6 h2h3 c8d7 e1g1 a8c8 f3e5 c5d4 e3d4 c6e5 f4e5 d8b6
info depth 24 seldepth 34 multipv 1 score cp 32 nodes 45477435 nps 2497936 hashfull 155 tbhits 0 time 18206 pv d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 e6d5 c1g5 f8e7 d4c5 e8g8 e2e3 b8c6 g5f6 e7f6 c3d5 f6b2 a1b1 b2a3 f1c4 a3c5 e1g1 a7a6 c4b3
info depth 25 seldepth 31 multipv 1 score cp 38 nodes 55381467 nps 2520891 hashfull 203 tbhits 0 time 21969 pv d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 f8b4 c1g5 c7c5 e2e3 c5d4 g5f6 d8f6 d1d4 f6d4 f3d4 b8c6 d4b5 e8g8 c4d5 e6d5 b5c7 a8b8 c7d5 b4c3 d5c3 c8e6
info depth 26 seldepth 39 multipv 1 score cp 28 nodes 69549803 nps 2554254 hashfull 249 tbhits 0 time 27229 pv d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 e6d5 c1g5 f8e7 d4c5 e8g8 e2e3 c8e6 f1e2 h7h6 g5f4 e7c5 e1g1 b8c6 c3b5 a8c8 a1c1 d8e7 b5d4 c6d4 f3d4 e6d7 e2f3
info depth 27 seldepth 35 multipv 1 score cp 32 nodes 88341585 nps 2567621 hashfull 312 tbhits 0 time 34406 pv d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 e6d5 c1g5 f8e7 d4c5 e8g8 e2e3 h7h6 g5f6 e7f6 f1e2 f6c3 b2c3 c8e6 f3d4 b8d7 e1g1 d7c5 a1b1 a8c8 d1c2 f8e8 g1h1 g7g6
info depth 28 seldepth 41 multipv 1 score cp 22 nodes 114308137 nps 2579212 hashfull 401 tbhits 0 time 44319 pv d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 b1c3 c7c6 e2e3 b8d7 f1e2 b7b6 e1g1 c8b7 b2b3 f8b4 c1b2 e8g8 d1c2 h7h6 a2a3 b4d6 f1d1 a8c8 e3e4 f6e4 c3e4 d5e4 c2e4
info depth 29 seldepth 38 multipv 1 score cp 22 nodes 131493550 nps 2577799 hashfull 454 tbhits 0 time 51010 pv d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 b1c3 c7c6 e2e3 b8d7 f1e2 b7b6 e1g1 c8b7 b2b3 f8e7 c1b2 e8g8 a1c1 a8c8 e2d3 c6c5 c4d5 f6d5 c3d5 b7d5 d3b1 d7f6 f3e5 e7d6 d4c5 c8c5
info depth 30 seldepth 37 multipv 1 score cp 25 nodes 172669782 nps 2570791 hashfull 550 tbhits 0 time 67166 pv d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 b1c3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4e2 c8b7 e1g1 f8e7 e3e4 b5b4 e4e5 b4c3 e5f6 e7f6 b2c3 c6c5 a1b1 d8c8 c1f4 c5d4 c3d4 b7c6 b1c1 e8g8 f4g3
info depth 31 seldepth 42 multipv 1 score cp 27 nodes 245796848 nps 2561130 hashfull 706 tbhits 0 time 95972 pv d2d4 d7d5 c2c4 e7e6 g1f3 d5c4 e2e3 c7c5 f1c4 g8f6 e1g1 a7a6 d4c5 d8d1 f1d1 f8c5 b1d2 e8g8 b2b3 b7b6 c1b2 c8b7 c4e2 b8d7 a1c1 a8c8 d2c4 f8d8 c4e5 d7e5 f3e5 d8d1 c1d1 c5e7
info depth 32 seldepth 44 multipv 1 score cp 30 nodes 312584774 nps 2567811 hashfull 831 tbhits 0 time 121732 pv d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 b1c3 c7c6 e2e3 b8d7 f1d3 f8d6 e3e4 d5c4 d3c4 e6e5 c1e3 d8e7 e1g1 e8g8 h2h3 e5d4 e3d4 d7e5 c4b3 f8d8 d1e2 e5f3 e2f3 b7b5 a1d1 c8e6 b3e6 e7e6 d4f6 e6f6 f3f6
info depth 33 seldepth 53 multipv 1 score cp 25 nodes 504220842 nps 2578765 hashfull 947 tbhits 0 time 195528 pv d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 b1c3 f8e7 c1f4 e8g8 e2e3 b8d7 c4d5 f6d5 c3d5 e6d5 f1e2 e7b4 f3d2 d7f6 e1g1 c8f5 d2f3 b4d6 f4d6 d8d6 f1e1 a8e8 a1c1 f6d7 e2d3 f5d3 d1d3 c7c6
info depth 34 seldepth 44 multipv 1 score cp 10 nodes 701974776 nps 2597174 hashfull 994 tbhits 0 time 270284 pv d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 d5c4 e2e3 c7c5 g1f3 c5d4 d1d4 d8d4 e3d4 f8e7 f1c4 b8c6 a1d1 e8g8 e1g1 f8d8 f1e1 h7h6 g5f4 c8d7 d4d5 f6d5 c3d5 e6d5 d1d5 d7e6 d5d8 c6d8 f4g3 a8c8
info depth 35 seldepth 48 multipv 1 score cp 8 nodes 1423172418 nps 2622411 hashfull 999 tbhits 0 time 542696 pv d2d4 e7e6 g1f3 d7d5 c1g5 f8e7 g5e7 g8e7 e2e3 e8g8 c2c4 b7b6 b1c3 c8b7 a1c1 d5c4 f1c4 b8d7 e1g1 c7c5 d4c5 d7c5 d1d8 f8d8 f1d1 a8c8 f3e5 e7g6 e5g6 h7g6 c4e2 e6e5 a2a3 g6g5 d1d8 c8d8 b2b4 c5e4 c3e4 b7e4
info depth 36 seldepth 53 multipv 1 score cp 7 nodes 2248334831 nps 2638169 hashfull 999 tbhits 0 time 852233 pv e2e4 c7c5 b1c3 b8c6 g1f3 e7e6 f1b5 c6d4 b5a4 a7a6 a4b3 g8e7 e1g1 e7c6 f3d4 c6d4 c3e2 d4b3 a2b3 b7b5 d2d4 c8b7 c1e3 b7e4 d4c5 f8e7 d1d2 d7d6 e2c3 e4b7 c5d6 d8d6 d2d6 e7d6 f1d1 d6c7 f2f3 e8g8
info depth 37 seldepth 51 multipv 1 score cp 9 nodes 2704202685 nps 2636656 hashfull 999 tbhits 0 time 1025618 pv e2e4 c7c5 b1c3 b8c6 g1f3 d7d6 f1e2 g8f6 e1g1 e7e5 e2c4 f8e7 d2d3 e8g8 a2a4 a7a6 h2h3 c8e6 f1e1 h7h6 c1d2 c6d4 b2b3 d8d7 a4a5 d7d8 c4e6 f7e6 f3d4 c5d4 c3a4 f6d7 d1g4 f8f6 c2c4 d4c3 d2c3 a8c8 c3d2 d8c7
info depth 38 seldepth 49 multipv 1 score cp 6 nodes 3352076991 nps 2639605 hashfull 999 tbhits 0 time 1269916 pv e2e4 c7c5 b1c3 b8c6 g1f3 g7g6 f1b5 f8g7 e1g1 e7e5 d2d3 g8e7 b5c4 e8g8 c3d5 d7d6 c1g5 h7h6 d5e7 c6e7 g5h4 d8e8 a2a4 e7c6 c2c3 c8e6 f3d2 e8d7 h2h3 f7f5 d1b3 e6c4 b3c4 g8h7 e4f5 f8f5 c4d5 g6g5 h4g3 c6e7 d5b3 a8e8
info depth 39 seldepth 51 multipv 1 score cp 9 nodes 4843938257 nps 2659073 hashfull 999 tbhits 0 time 1821664 pv c2c4 g8f6 b1c3 e7e5 g1f3 b8c6 g2g3 d7d5 c4d5 f6d5 f1g2 d5b6 e1g1 f8e7 d2d3 e8g8 c1e3 c8e6 d3d4 e5d4 f3d4 c6d4 e3d4 c7c5 d4e3 b6c4 e3c1 d8d1 f1d1 a8d8 d1d8 f8d8 g2b7 e7f6 b7e4 c4d2 e4c6 d8d6 g1g2 h7h6 c3e4 d2e4 c6e4
info depth 40 seldepth 52 multipv 1 score cp 13 nodes 6432149569 nps 2655657 hashfull 999 tbhits 0 time 2422055 pv c2c4 g8f6 b1c3 e7e5 g1f3 b8c6 e2e3 f8b4 d2d4 e5d4 e3d4 e8g8 f1e2 d7d5 e1g1 d5c4 e2c4 c8f5 a2a3 b4d6 c1g5 h7h6 g5h4 g7g5 h4g3 f8e8 d1d2 d6g3 f2g3 f5g6 a1e1 e8e1 f1e1 g8g7 d4d5 c6e7 h2h4 g5g4 f3e5 a7a6 e5g6 e7g6
info depth 41 seldepth 54 multipv 1 score cp 25 nodes 7139720058 nps 2656365 hashfull 999 tbhits 0 time 2687778 pv c2c4 g8f6 b1c3 c7c5 g1f3 b8c6 g2g3 d7d5 c4d5 f6d5 f1g2 d5c3 b2c3 e7e5 e1g1 f8e7 e2e3 c8g4 h2h3 g4e6 d2d4 e5d4 c3d4 e8g8 c1b2 d8d7 d4c5 e6h3 d1d7 h3d7 a1c1 f8d8 f1d1 d7g4 d1d8 a8d8 f3e5 d8d1 c1d1 g4d1 e5c6 b7c6 g2c6 e7c5 c6e4
info depth 42 seldepth 58 multipv 1 score cp 8 nodes 8999060694 nps 2662474 hashfull 999 tbhits 0 time 3379961 pv c2c4 g8f6 b1c3 c7c5 g1f3 e7e6 e2e4 b8c6 d2d4 c5d4 f3d4 f8c5 d4b3 c5b4 f1d3 d7d6 e1g1 e8g8 c1d2 c6e5 a2a3 b4c3 d2c3 f8e8 f1e1 e5d3 d1d3 e6e5 c3b4 c8e6 b3a5 d8b6 d3d6 b6d6 b4d6 b7b6 a5c6 e6c4 c6e5 c4b3 e5c6 e8e4 c6e7 g8h8 d6e5 a8e8 e7c6 b6b5 e1e4 f6e4
info depth 43 seldepth 59 multipv 1 score cp 19 nodes 16685266411 nps 2667124 hashfull 999 tbhits 0 time 6255902 pv c2c4 e7e6 b1c3 d7d5 d2d4 g8f6 g1f3 c7c6 e2e3 b8d7 d1c2 b7b6 b2b3 c8b7 c1b2 f8b4 f1e2 c6c5 a2a3 b4c3 c2c3 e8g8 e1g1 a8c8 f3d2 d5c4 b3c4 f8e8 f2f4 c5d4 e3d4 f6e4 d2e4 b7e4 c3g3 d7f6 a3a4 a7a5 f1e1 e4g6 a1c1 h7h6 e2d3 g6d3 g3d3
info depth 44 seldepth 62 multipv 1 score cp 18 nodes 31935614594 nps 2668840 hashfull 999 tbhits 0 time 11966099 pv c2c4 e7e6 g2g3 d7d5 f1g2 g8f6 d2d4 f8e7 g1f3 e8g8 e1g1 b8d7 d1d3 a7a6 b2b3 d5c4 b3c4 c7c5 f1d1 c5d4 d3d4 e6e5 d4c3 d8c7 c1b2 e7c5 e2e3 f8e8 c3c2 d7b6 b1c3 c5b4 a1c1 c7c4 f3d2 c4c5 d2e4 f6e4 c2e4 c5c4 e4f3 c4e6 f3e2 e6e7 c3d5 b6d5 d1d5
info depth 45 seldepth 61 multipv 1 score cp 18 nodes 37305243123 nps 2665386 hashfull 999 tbhits 0 time 13996185 pv c2c4 e7e6 g2g3 d7d5 f1g2 g8f6 d2d4 f8b4 b1d2 e8g8 g1f3 b8d7 e1g1 b7b6 c4d5 e6d5 a2a3 b4e7 b2b4 c8b7 f3e5 f8e8 c1b2 e7d6 f2f4 c7c5 d2c4 d6c7 d4c5 b6c5 e5d7 d8d7 b4c5 d7b5 a1b1 b5c5 b2d4 c5c4 b1b7 c7b6 e2e3 b6d4 d1d4 a7a5 d4c4 d5c4 e3e4 f6e4 b7c7 f7f5 f1c1 a8d8 c1c4 e4d6 g2d5 g8h8
info depth 46 seldepth 68 multipv 1 score cp 15 nodes 50476904815 nps 2658508 hashfull 999 tbhits 0 time 18986926 pv c2c4 e7e5 g2g3 g8f6 f1g2 c7c6 d2d4 e5e4 a2a3 d7d5 b1c3 f8e7 c4d5 c6d5 g1h3 e8g8 e1g1 h7h6 f2f3 e4f3 f1f3 b8d7 h3f4 d7b6 f3f2 a7a5 c1d2 g7g5 f4d3 b6c4 d1c1 f6g4 c3d5 c4d2 c1d2 g4f2 d3f2 c8e6 d5e7 d8e7 e2e4 f8d8 d4d5 e6d7 d2d4 f7f6 a1e1 d8c8 d4b6 a5a4 f2d3 c8c2 e4e5
info depth 47 seldepth 70 multipv 1 score cp 16 nodes 78749855020 nps 2664499 hashfull 999 tbhits 0 time 29555211 pv d2d4 d7d5 c2c4 e7e6 g1f3 c7c6 b2b3 g8f6 e2e3 b8d7 c1b2 b7b6 f1d3 c8b7 e1g1 g7g6 d1e2 f8g7 b1c3 e8g8 f1d1 a8c8 h2h3 f8e8 b3b4 f6h5 a1c1 d8e7 c4c5 e6e5 d4e5 b6c5 b4c5 d7e5 f3e5 g7e5 c1b1 c8b8 c3a4 b7c8 b2e5 b8b1 d1b1 e7e5 e2b2 e5b2 b1b2 h5f6 a4c3 c8f5 d3f5
info depth 48 seldepth 62 multipv 1 score cp 22 nodes 86258487995 nps 2663994 hashfull 999 tbhits 0 time 32379375 pv d2d4 d7d5 c2c4 e7e6 g1f3 c7c6 e2e3 g8f6 b2b3 b8d7 c1b2 b7b6 f1d3 f8e7 e1g1 e8g8 d1e2 c8b7 b1d2 d8c7 f3e5 a7a5 e5d7 c7d7 a2a4 a8d8 f1d1 d7c7 a1c1 d5c4 d2c4 f6d5 d3e4 d5b4 b2a3 b7a6 g2g3 f7f5 e4g2 e7f6 f2f4 c6c5 a3b2 b4a2 c1a1 a2b4 d4c5 c7c5 b2f6
info depth 49 seldepth 63 multipv 1 score cp 18 nodes 102087328823 nps 2674458 hashfull 999 tbhits 0 time 38171214 pv d2d4 d7d5 c2c4 d5c4 e2e3 c7c5 f1c4 c5d4 e3d4 e7e6 b1c3 g8f6 g1f3 f8e7 e1g1 e8g8 f1e1 b8c6 a2a3 b7b6 d4d5 c6a5 c4a2 f6d5 c3d5 e6d5 d1d5 c8e6 d5d8 a8d8 a2e6 f7e6 c1g5 e7g5 f3g5 a5b3 g5e6 d8d2 e6f8 b3a1 e1a1 g8f8 a1b1 g7g5 g2g3 f8e7 g1g2 e7e6 g2f3 d2c2 f3e3 g5g4 b2b3 e6f6 a3a4
info depth 50 seldepth 68 multipv 1 score cp 13 nodes 162433347175 nps 2709291 hashfull 999 tbhits 0 time 59954177 pv d2d4 e7e6 c2c4 d7d5 g1f3 d5c4 e2e3 g8f6 f1c4 a7a6 e1g1 c7c5 d4c5 d8d1 f1d1 f8c5 b1d2 e8g8 b2b3 b8d7 c1b2 b7b6 a1c1 c8b7 c4f1 f8d8 d2c4 b7d5 f3e5 c5e7 e5d3 a8c8 b2d4 b6b5 c4b6 d7b6 d4b6 d8e8 b6c5 g8f8 c5e7 f8e7 f2f3 f6d7 f1e2 d5b7 g1f2 e8d8 g2g3 f7f6 e3e4 a6a5 b3b4 a5a4 c1c8 d8c8
info depth 51 seldepth 72 multipv 1 score cp 13 nodes 184638998399 nps 2706160 hashfull 999 tbhits 0 time 68229137 pv d2d4 d7d5 c2c4 d5c4 e2e3 c7c5 f1c4 g8f6 g1f3 c5d4 e3d4 e7e6 e1g1 f8e7 b1c3 e8g8 f1e1 b8c6 a2a3 a7a6 c1f4 b7b5 d4d5 e6d5 c4d5 c8b7 d5a2 d8d1 a1d1 a8d8 c3d5 f6d5 a2d5 e7f6 f4g5 f6g5 f3g5 h7h6 g5e4 c6a5 d5b7 a5b7 b2b4 d8d1 e1d1 f8e8 e4c5 b7c5 b4c5 e8c8 d1c1 c8c6 f2f3 f7f6 g1f2 g8f7 g2g4
info depth 52 seldepth 80 multipv 1 score cp 24 nodes 401226073057 nps 2717272 hashfull 999 tbhits 0 time 147657664 pv d2d4 d7d5 c2c4 c7c6 g1f3 e7e6 e2e3 g8f6 b2b3 b8d7 c1b2 b7b6 f1d3 f8d6 e1g1 e8g8 b1d2 c8b7 f3e5 c6c5 c4d5 b7d5 e5d7 f6d7 d4c5 d7c5 d1g4 f7f6 d3c4 d8e7 c4d5 e6d5 a1d1 f8d8 g4f5 e7e6 f5e6 c5e6 d2f3 a8c8 d1c1 c8c1 f1c1 g8f7 g1f1 g7g5 f1e2 h7h5 c1c6 g5g4 f3d4 e6d4 b2d4 f7e7 h2h3 f6f5 h3g4
info depth 53 seldepth 72 multipv 1 score cp 9 nodes 481184993983 nps 2725196 hashfull 999 tbhits 0 time 176568889 pv d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 g2g3 f8b4 c1d2 b4e7 f1g2 e8g8 e1g1 c7c6 d1c2 b8d7 f1d1 b7b6 b2b3 c8a6 a2a4 f8e8 d2c3 c6c5 b1d2 a8c8 a1c1 d5c4 d2c4 a6c4 b3c4 c5d4 d1d4 d8c7 c3b2 e6e5 d4d1 e7b4 f3g5 d7c5 g2d5 e8e7 e2e3 h7h6 g5e4 c5e4 d5e4 e7e8 e4g2 c7e7 c2b3 e7c5 g2f3 g8h7 f3b7 c8d8 d1d8 e8d8 c1d1
info depth 54 seldepth 69 multipv 1 score cp 12 nodes 500828026388 nps 2725208 hashfull 999 tbhits 0 time 183776030 pv d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 g2g3 f8b4 c1d2 b4e7 f1g2 c7c6 e1g1 e8g8 b2b3 b7b6 d2c3 b8d7 b1d2 c8b7 a1c1 a7a5 c3b2 c6c5 f3e5 c5d4 e5d7 d8d7 b2d4 d5c4 d4f6 e7f6 d2c4 d7e7 d1d6 b7g2 d6e7 f6e7 g1g2 b6b5 c4b6 a8d8 c1c7 e7d6 c7a7 d6c5 a7b7 c5b6 b7b6 d8d2 a2a3 a5a4 b6b5 a4b3 b5b3 d2e2 f1c1 e2a2
info depth 55 seldepth 81 multipv 1 score cp 8 nodes 1683626096810 nps 2749458 hashfull 999 tbhits 0 time 612348337 pv g1f3 d7d5 g2g3 c7c5 f1g2 g7g6 e1g1 f8g7 d2d4 c5d4 f3d4 b8c6 d4c6 b7c6 e2e4 g8f6 b1c3 e7e6 c1g5 h7h6 g5f4 e8g8 f4e5 c8a6 f1e1 a8c8 d1d4 d8b6 d4b6 a7b6 a2a4 c8a8 f2f4 f8d8 a4a5 b6a5 a1a5 d5d4 c3d1 f6d7 e5g7 g8g7 d1f2 a6b5 b2b4 a8a5 b4a5 d8a8 e1a1 d7c5 e4e5 c5a4 a5a6 a8a6 f2e4 d4d3 c2d3 b5d3
info depth 56 seldepth 78 multipv 1 score cp 8 nodes 1902007602700 nps 2751251 hashfull 999 tbhits 0 time 691324582 pv g1f3 d7d5 g2g3 c7c5 f1g2 g7g6 c2c4 d5d4 b2b4 c5b4 d1a4 c8d7 a4b4 b8c6 b4b3 e7e5 d2d3 g8h6 e1g1 a8b8 b1a3 h6f5 a1b1 f8e7 a3c2 e8g8 b3b2 f7f6 f3d2 g6g5 g2d5 g8h8 e2e3 d4e3 f2e3 b7b5 c4b5 c6b4 c2b4 b8b5 d2c4 b5b4 b2a1 d7c8 b1b4 e7b4 a1b2 d8d5 b2b4 f8g8 b4b3 c8e6 c4a5 d5b3 a2b3 g8d8 e3e4 f5d4 f1f6 d4e2 g1g2 e2c1 f6e6 c1d3
info depth 57 seldepth 82 multipv 1 score cp 12 nodes 2600369228395 nps 2759257 hashfull 999 tbhits 0 time 942416277 pv g1f3 g8f6 g2g3 c7c5 f1g2 b8c6 e1g1 e7e5 e2e4 f8e7 b1c3 d7d6 d2d3 e8g8 c3d5 f6d5 e4d5 c6b8 f3d2 f7f5 a2a4 b8d7 a4a5 f8f7 c2c3 b7b5 a5b6 d7b6 b2b3 e7g5 c3c4 a7a5 c1b2 a5a4 d2b1 f7a7 b1c3 c8d7 a1a3 g5f6 f1e1 d8c7 e1e2 a4b3 a3b3 b6a4 c3b5 d7b5 b3b5 a7a5 b5b3 a4b2 e2b2 a5a1 b2b1 a1b1 d1b1 c7a7 g2f1 a7a5
info depth 58 seldepth 81 multipv 1 score cp 14 nodes 3065487180680 nps 2766078 hashfull 999 tbhits 0 time 1108243196 pv g1f3 g8f6 g2g3 c7c5 f1g2 g7g6 d2d4 f8g7 c2c3 c5d4 c3d4 d7d5 b1c3 b8c6 f3e5 c8d7 e5d7 d8d7 c1f4 e7e6 g2f3 a8c8 h2h4 e8g8 e2e3 h7h5 e1g1 c6a5 a1c1 c8c6 c1c2 f8c8 d1d3 g7f8 f1c1 f8b4 g1g2 a5c4 c3e2 b4e7 d3d1 e7d6 b2b3 d6f4 b3c4 f4b8 d1d3 b7b6 c4d5 e6d5 d3b3 c6c2 c1c2 c8c2 b3c2 b8d6 c2b3 d6e7 e2f4
info depth 59 seldepth 71 multipv 1 score cp 15 nodes 3136008925222 nps 2766995 hashfull 999 tbhits 0 time 1133362443 pv g1f3 g8f6 g2g3 c7c5 f1g2 g7g6 d2d4 f8g7 c2c3 c5d4 c3d4 d7d5 b1c3 b8c6 f3e5 c8d7 e5d7 d8d7 c1f4 e7e6 g2f3 a8c8 h2h4 e8g8 e2e3 h7h5 e1g1 c6a5 a1c1 c8c6 c1c2 f8c8 d1d3 g7f8 f1c1 f8b4 g1g2 a5c4 c3e2 b4e7 d3d1 e7d6 f4g5 f6h7 g5h6 h7f6 g2g1 e6e5 d4e5 c4e5 f3g2 e5g4 h6f4 d6f4 e3f4 c6c2 c1c2 c8c2 d1c2 d7e6 g2f3 f6e4 f3g4 e6g4 e2d4
info depth 60 seldepth 81 multipv 1 score cp 8 nodes 4277389258149 nps 2778898 hashfull 999 tbhits 0 time 1539239134 pv g1f3 d7d5 b2b3 g8f6 c1b2 e7e6 g2g3 b7b6 f1g2 c8b7 e1g1 f8e7 e2e3 e8g8 d2d4 b8d7 b1a3 d8b8 c2c4 f8d8 d1e2 a7a5 f1c1 a5a4 f3e1 c7c5 e1d3 c5d4 e3d4 d8c8 d3e5 e7a3 b2a3 a4b3 a2b3 d5c4 e5d7 f6d7 g2b7 b8b7 b3c4 d7f6 a3b2 a8a1 c1a1 b7e4 e2e4 f6e4 a1a6 h7h5 d4d5 e6d5 c4d5 c8d8 a6b6 d8d5 b6b4 d5d1 g1g2 d1d2 b4e4 d2b2 e4e3 g7g6 e3e7 b2b3
info depth 61 seldepth 86 multipv 1 score cp 12 nodes 5614261530698 nps 2783070 hashfull 999 tbhits 0 time 2017290614 pv c2c4 e7e6 g2g3 d7d5 f1g2 c7c6 g1f3 b7b5 c4b5 c6b5 e1g1 g8f6 d2d3 b8c6 c1f4 f8e7 b1d2 e8g8 d2b3 c8b7 f4e3 a8c8 f3d4 c6d4 e3d4 a7a5 a1c1 a5a4 b3c5 d8b6 b2b4 a4b3 c5b3 b6a6 d1d2 f6d7 c1c8 f8c8 f1c1 c8c1 d2c1 b5b4 c1a1 e7f8 f2f4 b7c6 g1f2 a6a4 a1b2 a4a6 b2c2 c6b5 b3d2 b5c6 d2f3 c6b5 f2g1 f8e7 c2b2 e7f8 f3e5 h7h6 e5d7 b5d7
info depth 62 seldepth 87 multipv 1 score cp 9 nodes 7198730538139 nps 0 tbhits 0 time -1707482268 pv c2c4 e7e6 g2g3 d7d5 f1g2 c7c6 g1f3 d5c4 a2a4 g8f6 e1g1 f6d5 b1a3 f8a3 a1a3 e8g8 a4a5 d5b4 b2b3 c6c5 b3c4 b8c6 d2d3 e6e5 a5a6 d8e7 a6b7 c8b7 f3h4 c6d4 e2e3 b7g2 h4g2 d4c6 e3e4 a7a5 g2e3 c6d4 e3d5 b4d5 e4d5 f8b8 c1e3 b8b4 e3d4 c5d4 a3a4 e7d7 a4b4 a5b4 d1b3 d7e7 f1b1 a8b8 b1a1 b8c8 g1g2 c8b8 a1c1 e7c5 c1e1 c5e7 f2f3 f7f5 h2h3
info depth 63 seldepth 84 multipv 1 score cp 15 nodes 7749378651635 nps 0 tbhits 0 time -1509141545 pv c2c4 e7e6 g2g3 d7d5 f1g2 c7c6 g1f3 b7b5 c4b5 c6b5 e1g1 g8f6 d2d3 f8e7 c1f4 e8g8 b1d2 b8c6 d2b3 c8b7 f4e3 a7a5 b3c5 d8b8 a1c1 f8c8 d1b3 b7a6 c5a6 a8a6 b3c2 f6d7 e3f4 b8b6 c2b1 a6a8 c1c2 c6b4 c2c8 a8c8 d3d4 d7f6 a2a3 b4c6 f1c1 b6b7 b1d3 b5b4 a3a4 h7h6 d3b5 b7a8 h2h4 f6e4 b5d3 e4d6 f4d6 e7d6 f3d2 c6e7 c1c2 c8c2 d3c2 g7g5 h4g5 h6g5 e2e4 g5g4 e4d5
info depth 64 seldepth 90 multipv 1 score cp 8 nodes 10149662885237 nps 0 tbhits 0 time -655615021 pv c2c4 c7c5 g1f3 g8f6 b1c3 d7d5 c4d5 f6d5 g2g3 b8c6 f1g2 d5c3 b2c3 e7e5 e1g1 f8e7 d2d4 c5d4 c3d4 e5d4 c1b2 e7f6 b2a3 a7a5 d1d2 c8e6 f1d1 d4d3 a1b1 c6b4 a3b4 a5b4 d2b4 d8a5 e2d3 a5b4 b1b4 a8a2 h2h4 h7h6 d3d4 e8g8 f3d2 f8b8 d4d5 f6c3 b4b3 a2d2 d1d2 c3d2 d5e6 f7e6 b3b7 b8b7 g2b7 g8f7 g1g2 f7f8 b7f3 d2a5 h4h5 a5b6 f3e4 f8f7 g2f3 b6c5 f3e2 c5d4 e4d3 d4f6
info depth 65 seldepth 97 multipv 1 score cp 8 nodes 17288598093977 nps 9446437 hashfull 999 tbhits 0 time 1830171180 pv c2c4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 g2g3 e7e5 d4b5 f8b4 c1d2 a7a6 b5c3 d7d5 c4d5 f6d5 f1g2 c8e6 e1g1 d5b6 c3a4 b4d2 g2c6 b7c6 a4b6 d8b6 d1d2 e8g8 d2c2 f7f5 b1c3 f5f4 c3a4 b6a7 a4c5 a7f7 c5e6 f7e6 c2e4 f8f6 b2b3 f6h6 a1c1 e6h3 e4g2 h3e6 c1c4 a8d8 f1c1 f4g3 h2g3 d8d2 c4c6 e6c6 g2c6 h6c6 c1c6 d2a2 g1f1 g8f7 c6c7 f7f6 f2f3 a2b2 c7a7 b2b3 a7a6 f6e7 a6a7 e7f6 f1f2 b3b2 f2e3 f6g6 a7a6 g6g5
info depth 66 seldepth 95 multipv 1 score cp 8 nodes 18387727244730 nps 0 tbhits 0 time -2079480837 pv c2c4 c7c5 g1f3 b8c6 b1c3 g7g6 e2e3 g8f6 d2d4 c5d4 e3d4 d7d5 c4d5 f6d5 d1b3 e7e6 f1b5 f8g7 b5c6 b7c6 e1g1 e8g8 f1e1 d8c7 f3e5 a8b8 b3c4 c6c5 c3d5 e6d5 c4c5 c7c5 d4c5 c8e6 e5d3 e6f5 e1d1 f5d3 d1d3 g7b2 a1b1 b2a3 b1b8 f8b8 d3a3 b8b1 g2g4 b1c1 g1g2 c1c5 a3a7 g8g7 a2a4 g7f6 a4a5 c5c3 f2f4 h7h5 a7a6 f6e7 f4f5 c3a3 f5g6 f7g6 a6g6 h5g4 a5a6 d5d4 g6g4 d4d3 g4d4 a3a6 d4d3 a6a2 g2f3 a2h2 d3e3 e7f6
info depth 67 seldepth 92 multipv 1 score cp 16 nodes 21068240925795 nps 0 tbhits 0 time -1127089501 pv c2c4 c7c5 g1f3 b8c6 b1c3 g7g6 e2e3 g8f6 d2d4 c5d4 e3d4 d7d5 c4d5 f6d5 d1b3 d5c3 f1c4 c3d5 c4d5 e7e6 d5c6 b7c6 e1g1 f8e7 c1e3 d8d5 f1c1 d5b3 a2b3 c8b7 f3e5 e8g8 e5d3 g6g5 d3c5 b7c8 c5e4 h7h6 f2f4 g5g4 e4f2 h6h5 f2d3 c8b7 a1a5 f7f5 d3c5 e7c5 c1c5 a7a6 g2g3 g8f7 g1f1 f8h8 e3f2 h8d8 f1e2 a8b8 e2d3 b7a8 d3c4 b8b6 b3b4 a8b7 c4c3 b6b5 a5a1 f7f6 a1e1 f6f7 c3b3 b5c5
info depth 68 seldepth 99 multipv 1 score cp 11 nodes 27111553587762 nps 28262233 hashfull 999 tbhits 0 time 959285610 pv c2c4 c7c5 g1f3 g8f6 b1c3 d7d5 c4d5 f6d5 e2e3 d5c3 d2c3 d8c7 f3d2 b8d7 a2a4 g7g6 f1e2 f8g7 e1g1 e8g8 e3e4 d7f6 d1c2 b7b6 d2c4 c8d7 f2f4 a8d8 e2f3 e7e6 c2e2 d7c6 c1d2 c6b7 e4e5 f6d5 c4d6 b7c6 d6b5 c7d7 c3c4 d5e7 d2c3 d7d3 e2d3 d8d3 f3e2 d3d7 g2g3 a7a6 b5d6 a6a5 f1d1 f8d8 g1f2 e7f5 d6f5 g6f5 d1d7 d8d7 b2b3 g8f8 a1d1 d7d1 e2d1 f8e7 f2e3 f7f6 d1f3 c6f3
info depth 69 seldepth 98 multipv 1 score cp 8 nodes 35925549032091 nps 0 tbhits 0 time -271319018 pv c2c4 c7c5 g1f3 g8f6 g2g3 d7d5 d2d4 d5c4 d1a4 b8c6 d4c5 e7e6 f1g2 f8c5 e1g1 e8g8 a4c4 c5e7 b1c3 c8d7 f1d1 d8a5 c4b5 a5b5 c3b5 c6b4 b5d4 f8d8 c1d2 b4c6 d4c6 d7c6 f3e5 c6g2 g1g2 a8c8 d2e3 a7a6 d1d8 c8d8 a1c1 f6d5 e3c5 e7c5 c1c5 f7f6 e5d3 g8f7 c5c1 g7g5 c1c5 f6f5 f2f3 f7f6 c5c1 d8d7 g2f2 b7b6 f3f4 g5f4 g3f4 d7c7 c1c7 d5c7 e2e3 c7d5 f2e2 f6e7 d3e5 e7f6 e2f3 h7h5
info depth 70 seldepth 91 multipv 1 score cp 8 nodes 41192897168184 nps 25911627 hashfull 999 tbhits 0 time 1589745672 pv c2c4 c7c5 g1f3 g8f6 g2g3 d7d5 d2d4 d5c4 d1a4 b8c6 d4c5 e7e6 f1g2 f8c5 b1c3 d8a5 a4c4 e8g8 e1g1 c8d7 c3e4 c5e7 c1d2 a5f5 e4f6 e7f6 d2c3 e6e5 f3d2 a8c8 c4b3 c8c7 g2d5 b7b5 a2a3 a7a6 a1c1 f6e7 e2e3 f8c8 f2f4 d7e6 d5e6 f5e6 b3e6 f7e6 d2e4 a6a5 c3e5 c6e5 c1c7 c8c7 f4e5 c7c4 f1f4 e7c5 e4c5 c4c5 g1f1 c5c1 f1g2 c1c5 b2b4 a5b4 a3b4 c5c2 f4f2 c2c3 g2f3 c3c4 f2d2 c4b4 d2d7 g7g5 g3g4 b4b2 d7b7 b2h2 b7b5

[pgn][Event "Stockfish 180113 64 POPCNT - Initial position depth 70"] [Site "TalkChess"] [Date "2018.07.02"] [White "Stockfish 180113 64"] [Black "Stockfish 180113 64"] [Round "1"] [Result "*"] [ECO "A30"] [Opening "English"] [Variation "Symmetrical, 2.Nf3 Nf6 3.g3"] [PlyCount "79"] 1. c4 c5 2. Nf3 Nf6 3. g3 d5 4. d4 dxc4 5. Qa4+ Nc6 6. dxc5 e6 7. Bg2 Bxc5 8. Nc3 Qa5 9. Qxc4 O-O 10. O-O Bd7 11. Ne4 Be7 12. Bd2 Qf5 13. Nxf6+ Bxf6 14. Bc3 e5 15. Nd2 Rac8 16. Qb3 Rc7 17. Bd5 b5 18. a3 a6 19. Rac1 Be7 20. e3 Rfc8 21. f4 Be6 22. Bxe6 Qxe6 23. Qxe6 fxe6 24. Ne4 a5 25. Bxe5 Nxe5 26.Rxc7 Rxc7 27. fxe5 Rc4 28. Rf4 Bc5 29. Nxc5 Rxc5 30. Kf1 Rc1+ 31. Kg2 Rc5 32. b4 axb4 33. axb4 Rc2+ 34. Rf2 Rc3 35. Kf3 Rc4 36. Rd2 Rxb4 37. Rd7 g5 38. g4 Rb2 39. Rb7 Rxh2 40. Rxb5 *[/pgn]

[CID]

Fischer: "1.e4 best by the test !"
Alfa Zero & Stockfish : "Lol !"
1.c4 !

[Dann Corbit]

Because SF has changed its mind several times on the way to ply 70, I think it is a mistake to assume that it has "settled" on c4.

Don't forget Berliner, who was the 1.d4 advocate.

I am somewhat fond of 1.d4 because I understand why it ought to be better (as outlined by Berliner).
I also understand the big benefits of 1.e4 (chiefly mobility).
With 1.c4, I do not really understand why it should be better than 1.d4 or 1.e4

[clumma]

Give black 1. ... e5, as suggested by Cerebellum, and see what SF thinks.

-Carl

[clumma]

Because SF has changed its mind several times on the way to ply 70, I think it is a mistake to assume that it has "settled" on c4.

Agree. Engines are not optimized for this sort of analysis.

I am somewhat fond of 1.d4 because I understand why it ought to be better (as outlined by Berliner).
I also understand the big benefits of 1.e4 (chiefly mobility).
With 1.c4, I do not really understand why it should be better than 1.d4 or 1.e4

For what it's worth, Cerebellum gives d4/Nf3 best (same main line), followed by e4 and then c4.

It's likely all three are draws with best play, but presumably it's harder in some sense to equalize after d4 than after c4.

-Carl

[henk2]

Seems like the required nodes for Stockfish to reach the next depth stops following the log curve after 65.
I wonder if it is because it has reached endgame (around 65) and the good/bad choices become more obvious so the branching factor becomes smaller.

If that's the case, then weakly solving chess should be well within reach. (Or at least a weak proof in practical sense within reasonable doubt)
The Clusterfish system on Ipmanchess would reach this depth in a few hours.
But I don't know how Stockfish's pruning affects the proof.

Either way, solving 5x5 chess was fairly trivial despite having a large state space of 10^18.
https://arxiv.org/pdf/1307.7118.pdf
http://membreslig.imag.fr/prost/MiniChessResolution/

Checkers has 10^20, but Chinook "only" needed to calculate 10^14 to proof it was a draw.
I wonder how long it would take a modern checkers engine like Kingsrow to see the draw from the start position.

[Uri Blass]

I do not see how stockfish's depth is relevant for solving chess.

Stockfish is not generated to solve chess and cannot do it.

Stockfish has wrong pruning based on hash tables because it does not store all the position in the hash and may get a hash collision so it may report a wrong score.

I think that it may be interesting to test stockfish on tablebases positions to see how many mates it can see in drawn position thanks to wrong scores in the tranposition tables and how many draw score it can see in mate positions(maybe only one of the cases is possible and I did not learn exactly how the wrong information in the tranposition table can influence stockfish).

Even if it is only 1 case out of million then you cannot trust it in solving chess and I think that the wrong information in the tranposition tables should cause it to blunder.

First step may be to test stockfish without tablebases with clear hash on all the mates in 1,2,3,4.... in the 7 piece tablebases in order to find bugs and maybe somebody can run a program that give stockfish in a loop all the possible position when stockfish stop only when it finds mate.

Even if stockfish can solve all the easy mates
It may be interesting to see the maximal depth that it needs to see the mate for mate in n moves for every n.

I know that this project should take a lot of computer time and maybe somebody may start with the 3 piece tablebases and continue with the 4 piece tablabases.

[henk2]

I do not see how stockfish's depth is relevant for solving chess.

Stockfish is not generated to solve chess and cannot do it.

Stockfish has wrong pruning based on hash tables because it does not store all the position in the hash and may get a hash collision so it may report a wrong score.

I think that it may be interesting to test stockfish on tablebases positions to see how many mates it can see in drawn position thanks to wrong scores in the tranposition tables and how many draw score it can see in mate positions(maybe only one of the cases is possible and I did not learn exactly how the wrong information in the tranposition table can influence stockfish).

Even if it is only 1 case out of million then you cannot trust it in solving chess and I think that the wrong information in the tranposition tables should cause it to blunder.

First step may be to test stockfish without tablebases with clear hash on all the mates in 1,2,3,4.... in the 7 piece tablebases in order to find bugs and maybe somebody can run a program that give stockfish in a loop all the possible position when stockfish stop only when it finds mate.

Even if stockfish can solve all the easy mates
It may be interesting to see the maximal depth that it needs to see the mate for mate in n moves for every n.

I know that this project should take a lot of computer time and maybe somebody may start with the 3 piece tablebases and continue with the 4 piece tablabases.

I'm talking about (ultra) weakly solving chess, not strongly solving chess.
Team Chinook didn't store everything for weakly solving checkers either. You don't need the number of moves to a mate/win, team Chinook didn't do that either.
Team Chinook also used alpha-beta pruning, just like Stockfish.

[Uri Blass]

I do not see how stockfish's depth is relevant for solving chess.

Stockfish is not generated to solve chess and cannot do it.

Stockfish has wrong pruning based on hash tables because it does not store all the position in the hash and may get a hash collision so it may report a wrong score.

I think that it may be interesting to test stockfish on tablebases positions to see how many mates it can see in drawn position thanks to wrong scores in the tranposition tables and how many draw score it can see in mate positions(maybe only one of the cases is possible and I did not learn exactly how the wrong information in the tranposition table can influence stockfish).

Even if it is only 1 case out of million then you cannot trust it in solving chess and I think that the wrong information in the tranposition tables should cause it to blunder.

First step may be to test stockfish without tablebases with clear hash on all the mates in 1,2,3,4.... in the 7 piece tablebases in order to find bugs and maybe somebody can run a program that give stockfish in a loop all the possible position when stockfish stop only when it finds mate.

Even if stockfish can solve all the easy mates
It may be interesting to see the maximal depth that it needs to see the mate for mate in n moves for every n.

I know that this project should take a lot of computer time and maybe somebody may start with the 3 piece tablebases and continue with the 4 piece tablabases.

I'm talking about (ultra) weakly solving chess, not strongly solving chess.
Team Chinook didn't store everything for weakly solving checkers either. You don't need the number of moves to a mate/win, team Chinook didn't do that either.
Team Chinook also used alpha-beta pruning, just like Stockfish.

The problem is that there may be hash collisions in stockfish so in theory it may show wrong scores.

I am not sure if stockfish can avoid mistakes in tablebases positions and I mean that stockfish may show mate score when practically it is a draw or may show a draw score forever when practically it is a win for white.

I remember that some patch that increase the probability of hash collision passed in the stockfish framework only because it plays better but it means that maybe stockfish can do the type of mistakes that I suggested in 1 out of million tablebases positions.

[Dann Corbit]

It is also possible that the savage pruning will hide solutions.
Indeed, we see this happen from time to time when SF goes blind (as do all aggressive pruning engines at times) and plays for the draw instead of the win.

On the other hand, the exponential march forward of both hardware and software will eventually make a sort of pragmatic solution for a given position become realistic.
Currently, top hardware can reach 70 plies.
When I started fooling around with chess engines, it took about 12 minutes to get to 15 plies and 18 plies was a 24 hour effort.

In particular, if graphics cards continue to march forward as they have been, then a server with a boatload of GPUs in it might be able to simply solve chess rigorously by and/or proof search.
Not today, obviously. Maybe 30 years from now?
Perhaps a cooperative effort with a billion GPUs scattered about the internet.