Tucano 4.00 release

[sedicla]

Hello,

Please find in the link below the latest Tucano update! Version 4.00. Includes 32 and 64 windows execs, and source code as well.

It should be about 35 elo points stronger on fast time control.
Made many changes but more important was to use a better testing system.

Thanks to Gerd for giving some tips on magic bitboards. Hope I got it right now

Still planning to keep the work on tucano, there still a lot of things to do and improve.

Thanks and have fun !

[Graham Banks]

Thanks Alcides.

[gerold]

Many Thanks Alcides.

Best,
Gerold.

[Max]

Hi Alcides,

many thanks for your engine. The source code compiles without an issue on my mac with gcc & clang.

You mentioned in the readme a bench signature of 14246471. But I get (with different options and compilers) always 14333833. The created binary seems to play well. Any idea what could be the reason?

All the best,
-Max

[sedicla]

Hi Alcides,

many thanks for your engine. The source code compiles without an issue on my mac with gcc & clang.

You mentioned in the readme a bench signature of 14246471. But I get (with different options and compilers) always 14333833. The created binary seems to play well. Any idea what could be the reason?

All the best,
-Max

Hi Max, I am not sure, but I it can be related to the way I use the bitboards. I will do some tests tomorrow and get back to you.

thanks for using Tucano !

[sedicla]

Hi Alcides,

many thanks for your engine. The source code compiles without an issue on my mac with gcc & clang.

You mentioned in the readme a bench signature of 14246471. But I get (with different options and compilers) always 14333833. The created binary seems to play well. Any idea what could be the reason?

All the best,
-Max

I didn't find anything, I recomend to run the move generator tests and transposition table tests. Start tucano and use the following commands:
perftx, perfty, perftz, tt1, tt2
They show the results on screen. If it is fine, should be ok.

I will keep looking on what can be creating this difference for signature.
thank you.

[Ralf Müller]

Thanks!
Does your engine support Multiv-PV?

[Max]

I didn't find anything, I recomend to run the move generator tests and transposition table tests. Start tucano and use the following commands:
perftx, perfty, perftz, tt1, tt2
They show the results on screen. If it is fine, should be ok.

I will keep looking on what can be creating this difference for signature.
thank you.

The output of pertftx, perfty and perftz looks good. Only position #126 from perfty took pretty long to finish ply 5. Tt1 & tt2 give both "Error (unknown command)". But ttt1 prints

Code: Select all

ttt1
Ply      Nodes  Score Time Principal Variation
  1          5   1.02  0.0 1. a1b2
  2         20   0.86  0.0 1. a1b2 a7b6
  3         66   0.82  0.0 1. a1b2 a7b6 b2c3
  4        142   1.02  0.0 1. a1b2 a7b6 b2c3 b6c7
  5        276   0.92  0.0 1. a1b2 a7b6 b2c3 b6c7 c3c4
  6        457   1.02  0.0 1. a1b2 a7b6 b2c3 b6c7 c3c4 c7d7
  7        743   0.82  0.0 1. a1b2 a7b6 b2c3 b6c7 c3c4 c7d7 c4d3
  8       1147   1.12  0.0 1. a1b2 a7b6 b2c3 b6c7 c3c4 c7b6 c4d3 b6c7
  9       1630   0.92  0.0 1. a1b2 a7b6 b2c3 b6c7 c3c4 c7b6 c4d3 b6c7 d3c4
 10       2359   1.12  0.0 1. a1b2 a7b6 b2b3 b6c7 b3c3 c7b7 c3c4 b7b6 c4d3 b6c7
 11       3643   1.02  0.0 1. a1b2 a7b6 b2b3 b6c7 b3c3 c7b7 c3b3 b7c7 b3c3 c7b7 c3c4
 12       5358   1.02  0.0 1. a1b2 a7b6 b2b3 b6b7 b3c3 b7c7 c3b3 c7b7 b3c3 b7c7 c3c4 c7d7
 13       7359   1.02  0.0 1. a1b2 a7b6 b2b3 b6b7 b3c3 b7c7 c3b3 c7b7 b3c3 b7c7 c3d3 c7b7 d3c4
 14       9907   1.02  0.0 1. a1b2 a7b6 b2b3 b6b7 b3c3 b7c7 c3b3 c7b7 b3c3 b7b6 c3c4 b6a6 c4c3 a6b6
 15      12400   1.02  0.0 1. a1b2 a7b6 b2b3 b6b7 b3c4 b7a6 c4d3 a6b7 d3c3 b7c7 c3d2 c7b6 d2c2 b6b7 c2d3
 16      14882   1.12  0.0 1. a1a2 a7b7 a2a3 b7b6 a3b2 b6a6 b2c3 a6b6 c3c4 b6a6 c4d3 a6b7 d3c4 b7b6 c4d3 b6c7
 17      17726   1.08  0.0 1. a1a2 a7b7 a2a3 b7b6 a3b2 b6a6 b2c3 a6b6 c3c4 b6a6 c4b3 a6b6 b3b2 b6a6 b2a2 a6a7 a2b3
 18      20917   1.12  0.0 1. a1a2 a7b7 a2a3 b7a6 a3b2 a6b6 b2b3 b6b7 b3a3 b7a6 a3b2 a6b6 b2b3 b6b7 b3c4 b7a6 c4d3 a6b6
 19      31415   1.02  0.0 1. a1a2 a7b7 a2a3 b7a6 a3b2 a6b6 b2b3 b6b7 b3a3 b7a6 a3b2 a6b6 b2b3 b6b7 b3c4 b7a6 c4d3 a6b7 d3c4
 20      41723   1.02  0.0 1. a1a2 a7b7 a2a3 b7a6 a3b2 a6b6 b2b3 b6b7 b3c3 b7a6 c3d3 a6b7 d3e3 b7c7 e3f2 c7d7 f2f3 d7e7 f3e3 e7d7
 21      47944   1.02  0.0 1. a1a2 a7b7 a2a3 b7a6 a3b2 a6b6 b2c2 b6b7 c2c3 b7c7 c3d3 c7b7 d3e3 b7c7 e3d3 c7b7 d3c3 b7c7 c3b3 c7b7 b3c4
 22      56507   1.06  0.0 1. a1a2 a7b7 a2a3 b7a6 a3b2 a6b6 b2c2 b6b7 c2c3 b7c7 c3b3 c7b7 b3a2 b7c7 a2b3 c7b7 b3a2 b7c7 a2b2 c7b6 b2c2 b6b7
 23      66273   1.02  0.0 1. a1a2 a7b7 a2a3 b7a6 a3b3 a6a7 b3c4 a7b6 c4d3 b6c7 d3e3 c7d7 e3e2 d7d8 e2d2 d8c8 d2e2 c8d8 e2d3 d8c7 d3d2 c7b7 d2e3
 24      76493   2.32  0.0 1. a1b1 a7b7 b1c1 b7c7 c1d1 c7d7 d1c2 d7c7 c2d3 c7b7 d3e3 b7c7 e3f3 c7d7 f3g3 d7e7 g3h4 e7f6 h4h5 f6f7 h5g5 f7e7 g5f5 e7d7
 25      81866   2.57  0.0 1. a1b1 a7b7 b1c1 b7c7 c1d1 c7d7 d1c2 d7c7 c2d3 c7b7 d3e3 b7c7 e3f3 c7d7 f3g3 d7e7 g3h4 e7f6 h4h5 f6f7 h5g5 f7e7 g5f5 e7d7 f5e4
 26      88703   2.61  0.0 1. a1b1 a7b7 b1c1 b7c7 c1d1 c7d7 d1c2 d7c7 c2d3 c7b7 d3e3 b7c7 e3f3 c7d7 f3g3 d7e7 g3h4 e7f6 h4h5 f6f7 h5g5 f7e7 g5f5 e7f7 f5g5 f7e7
 27      96489   2.86  0.0 1. a1b1 a7b7 b1c1 b7c7 c1d1 c7d7 d1c2 d7c7 c2d3 c7b7 d3e3 b7c7 e3f3 c7d7 f3g3 d7e7 g3h4 e7f6 h4h5 f6f7 h5g5 f7e7 g5f5 e7f7 f5g5 f7e7 f4f5
 28     105124   3.06  0.0 1. a1b1 a7b7 b1c1 b7c7 c1d1 c7d7 d1c2 d7c7 c2d3 c7b7 d3e3 b7c7 e3f3 c7d7 f3g3 d7e7 g3h4 e7f6 h4h5 f6f7 h5g5 f7e7 g5f5 e7f7 f5g5 f7e8 f4f5 e8e7
 29     119207   2.96  0.0 1. a1b1 a7b7 b1c1 b7c7 c1d1 c7d7 d1c2 d7c7 c2d3 c7b7 d3e3 b7c7 e3f3 c7d7 f3g3 d7e7 g3h4 e7f6 h4h5 f6f7 h5g5 f7e7 g5g6 e7d7 g6f5 d7e7 f5g5 e7f7 f4f5
 30     132812   3.11  0.0 1. a1b1 a7b7 b1c1 b7c7 c1d1 c7d7 d1c2 d7c7 c2d3 c7b7 d3e3 b7c7 e3f3 c7d7 f3g3 d7e7 g3h4 e7f6 h4h5 f6f7 h5g5 f7e7 g5f5 e7f7 f5g5 f7e8 f4f5 e8e7 g5g6 e7d7
 31     155239   4.05  0.0 1. a1b1 a7b7 b1c1 b7c7 c1d1 c7d7 d1c2 d7c7 c2d3 c7b7 d3e3 b7c7 e3f3 c7d7 f3g3 d7e7 g3h4 e7f6 h4h5 f6f7 h5g5 f7e7 g5f5 e7f7 f5g5 f7e7 f4f5 e7e8 g5g6 e8d7 f5f6
 32     181703   3.26  0.0 1. a1b1 a7b7 b1c1 b7c7 c1d1 c7d7 d1c2 d7c7 c2d3 c7b7 d3e3 b7c7 e3f3 c7d7 f3g3 d7e7 g3h4 e7f6 h4h5 f6f7 h5g5 f7e7 g5f5 e7f7 f5g5 f7e7 g5g6 e7e8 f4f5 e8f8 g6g5 f8g7

Transposition table test: Best move is a1b1, score 2+.

and ttt2 prints

Code: Select all

ttt2
Ply      Nodes  Score Time Principal Variation
  1         12   4.18  0.0 1. e6d6
  2         51   4.38  0.0 1. e6d6 c8b8
  3        145   3.33  0.0 1. e6d6 c8d8 d6d5
  4        289   3.47  0.0 1. e6e7 c8c7 e7e6 c7b8
  5        592   4.02  0.0 1. e6d5 c8b8 d5d6 b8c8 c6c7 c8b7
  6        870   4.38  0.0 1. e6d5 c8c7 d5e5 c7c8 e5d6 c8d8
  7       1338   3.33  0.0 1. e6d5 c8c7 d5e5 c7c8 e5d6 c8d8 d6d5
  8       1933   3.53  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8
  9       2372   4.18  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5d6
 10       2962   4.38  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5d6 c8d8
 11       4766   3.33  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6d5
 12       5899   3.53  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8
 13       6960   4.18  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6
 14       8182   4.38  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8
 15      13081   3.33  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6d5
 16      15086   3.47  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5e5 c8c7 e5e6 c7c8
 17      17983   4.18  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6e7 c7c8 e7e8 c8c7 e8e7 c7c8 e7d6
 18      23629   3.47  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6e5 d8c7 e5e6 c7c8
 19      25997   4.18  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6e5 d8c7 e5e6 c7c8 e6d6
 20      28442   4.38  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6e5 d8c7 e5e6 c7c8 e6d6 c8d8
 21      37883   3.48  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5c4 c8c7 c4b3 c7c8 b3b2 c8c7 b2b3 c7c8 b3b4
 22      51543  10.23  0.0 1. c6c7 c8c7 e6e7 c7c8 e7d6 c8b7 d6d7 b7a8 d7c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 a6a7 c8c7 b5b6 c7d6 b6b7 d6c6 b7b8q c6d5 b8b7 d5e5 b7b5 e5d4
 23      67360  10.23  0.0 1. c6c7 c8c7 e6e7 c7c8 e7d6 c8b7 d6d7 b7a8 d7c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d7 b6b7 d7c7 a6a7 c7d6 b7b8q d6d5 b8b5 d5d4
 24     107554  10.67  0.0 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d7 b6b7 d7c7 a6a7 c7d6 b7b8q d6d5 b8b5 d5d4 a7b6 d4e4 b5c4 e4e5
 25     216079  10.93  0.1 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 a6a7 c8c7 b5b6 c7d6 b6b7 d6c6 b7b8q c6d5 b8f4 d5e6 a7b6 e6d5 b6b5 d5e6 f4e4 e6d6
 26     417211  10.93  0.1 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d7 b6b7 d7c7 a6a7 c7c6 b7b8q c6d5 b8f4 d5e6 a7b6 e6d5 b6b5 d5e6 f4e4 e6d6
 27     589297  11.09  0.2 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d7 b6b7 d7c7 a6a7 c7c6 b7b8q c6d5 b8f4 d5e6 f4e4 e6f6 a7b6 f6g5 b6c5 g5f6
 28    2997852  11.25  0.7 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d8 b6b7 d8c7 a6a7 c7c6 b7b8q c6c5 b8f4 c5b5 f4e4 b5a5 a7b7 a5b5 e4d4 b5a5
 29    4993212  11.53  1.1 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7b8 c6b6 b8c8 b6a7 c8d7 b5b6 d7d6 b6b7 d6c5 b7b8q c5d4 b8f4 d4d3 a7b6 d3c2 f4e3 c2b2 e3d2 b2a1 b6c5 a1b1 c5d5 b1a1 d2c3 a1a2
 30    9904430  14.18  2.2 1. e6d6 c8d8 c6c7 d8c8 d6d5 c8c7 d5e6 c7c8 e6d6 c8b7 d6d7 b7a8 d7c6 a8b8 c6b6 b8c8 b6a7 c8d7 b5b6 d7d6 b6b7 d6e6 a7b6 e6d5 b6b5 d5d4 b5b6 d4d5 b6a6 d5e5 a6b5 e5d6
 31   10044390  14.18  2.2 1. e6d6 c8d8 c6c7 d8c8 d6d5 c8c7 d5e6 c7c8 e6d6 c8b7 d6d7 b7a8 d7c6 a8b8 c6b6 b8c8 b6a7 c8d7 b5b6 d7d6 b6b7 d6e6 a7b6 e6d5 b6b5 d5d4 b5b6 d4c4 b6c6 c4b4 c6b6 b4c4 b6c7
 32   10146974  14.18  2.2 1. e6d6 c8d8 c6c7 d8c8 d6d5 c8c7 d5e6 c7c8 e6d6 c8b7 d6d7 b7a8 d7c6 a8b8 c6b6 b8c8 b6a7 c8d7 b5b6 d7d6 b6b7 d6e6 a7b6 e6f5 b6c7 f5e5 c7c6 e5e6 c6b5 e6d6 b5b6 d6d5 b6b5 d5d6

Transposition table test: Best move is c7, score 9+.

Don't know how to interpret this.

I compiled Tucano in a linux vm with gcc 4.6.4 and 4.7.3. Get another different bench signature of 14009485. The perft tests are ok and ttt1 looks like on osx. But ttt2 differs:

Code: Select all

ttt2
Ply      Nodes  Score Time Principal Variation
  1         12   4.18  0.0 1. e6d6
  2         51   4.38  0.0 1. e6d6 c8b8
  3        145   3.33  0.0 1. e6d6 c8d8 d6d5
  4        289   3.47  0.0 1. e6e7 c8c7 e7e6 c7b8
  5        592   4.02  0.0 1. e6d5 c8b8 d5d6 b8c8 c6c7 c8b7
  6        870   4.38  0.0 1. e6d5 c8c7 d5e5 c7c8 e5d6 c8d8
  7       1338   3.33  0.0 1. e6d5 c8c7 d5e5 c7c8 e5d6 c8d8 d6d5
  8       1933   3.53  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8
  9       2372   4.18  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5d6
 10       2962   4.38  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5d6 c8d8
 11       4766   3.33  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6d5
 12       5899   3.53  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8
 13       6960   4.18  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6
 14       8182   4.38  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8
 15      13081   3.33  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6d5
 16      15086   3.47  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5e5 c8c7 e5e6 c7c8
 17      17983   4.18  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6e7 c7c8 e7e8 c8c7 e8e7 c7c8 e7d6
 18      23629   3.47  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6e5 d8c7 e5e6 c7c8
 19      25997   4.18  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6e5 d8c7 e5e6 c7c8 e6d6
 20      28442   4.38  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5d6 c8d8 d6e5 d8c7 e5e6 c7c8 e6d6 c8d8
 21      37883   3.48  0.0 1. e6d5 c8c7 d5e5 c7c8 e5e6 c8c7 e6d5 c7c8 d5e6 c8c7 e6d5 c7c8 d5c4 c8c7 c4b3 c7c8 b3b2 c8c7 b2b3 c7c8 b3b4
 22      51543  10.23  0.0 1. c6c7 c8c7 e6e7 c7c8 e7d6 c8b7 d6d7 b7a8 d7c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 a6a7 c8c7 b5b6 c7d6 b6b7 d6c6 b7b8q c6d5 b8b7 d5e5 b7b5 e5d4
 23      67360  10.23  0.0 1. c6c7 c8c7 e6e7 c7c8 e7d6 c8b7 d6d7 b7a8 d7c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d7 b6b7 d7c7 a6a7 c7d6 b7b8q d6d5 b8b5 d5d4
 24     107554  10.67  0.0 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d7 b6b7 d7c7 a6a7 c7d6 b7b8q d6d5 b8b5 d5d4 a7b6 d4e4 b5c4 e4e5
 25     216079  10.93  0.1 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 a6a7 c8c7 b5b6 c7d6 b6b7 d6c6 b7b8q c6d5 b8f4 d5e6 a7b6 e6d5 b6b5 d5e6 f4e4 e6d6
 26     417211  10.93  0.1 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d7 b6b7 d7c7 a6a7 c7c6 b7b8q c6d5 b8f4 d5e6 a7b6 e6d5 b6b5 d5e6 f4e4 e6d6
 27     589297  11.09  0.2 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d7 b6b7 d7c7 a6a7 c7c6 b7b8q c6d5 b8f4 d5e6 f4e4 e6f6 a7b6 f6g5 b6c5 g5f6
 28    2997852  11.25  0.7 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7a8 c6b6 a8b8 b6a6 b8c8 b5b6 c8d8 b6b7 d8c7 a6a7 c7c6 b7b8q c6c5 b8f4 c5b5 f4e4 b5a5 a7b7 a5b5 e4d4 b5a5
 29    4993203  11.53  1.1 1. c6c7 c8c7 e6e7 c7b7 e7d6 b7a8 d6c7 a8a7 c7c6 a7b8 c6b6 b8c8 b6a7 c8d7 b5b6 d7d6 b6b7 d6c5 b7b8q c5d4 b8f4 d4d3 a7b6 d3c2 f4e3 c2b2 e3d2 b2a1 b6c5 a1b1 c5d5 b1a1 d2c3 a1a2
 30    9899596  14.18  2.2 1. e6d6 c8d8 c6c7 d8c8 d6d5 c8c7 d5e6 c7c8 e6d6 c8b7 d6d7 b7a8 d7c6 a8b8 c6b6 b8c8 b6a7 c8d7 b5b6 d7d6 b6b7 d6e6 a7b6 e6d5 b6b5 d5d4 b5c6 d4c4 c6b6 c4d5 b6b5 d5d6
 31   10072060  14.23  2.2 1. e6d6 c8d8 c6c7 d8c8 d6d5 c8c7 d5e6 c7c8 e6d6 c8b7 d6d7 b7a8 d7c6 a8b8 c6b6 b8c8 b6a7 c8d7 b5b6 d7d6 b6b7 d6e6 a7b6 e6d5 b6b5 d5d4 b5c6 d4c4 c6b6 c4d4 b6c6 d4c4 c6b6
 32   33165255  14.38  6.9 1. c6c7 c8c7 e6e7 c7b8 e7d7 b8b7 d7d6 b7a8 d6c6 a8a7 c6c7 a7a8 c7b6 a8b8 b6a6 b8c7 b5b6 c7c8 a6a7 c8d7 b6b7 d7e6 a7b6 e6f5 b6c6 f5f4 c6b6 f4e4 b6c5 e4d3 c5b5 d3e4 b5c6 e4e5

Transposition table test: Best move is c7, score 9+.

Hope it helps finding the os dependency,
-Max

[Jamal Bubker]

Thank you Alcides !

[sedicla]

Thanks!
Does your engine support Multiv-PV?

Hi Ralf,
No, tucano doesn't support multi-pv, actually I don't have plans, there are many other things I'm planning to do. May have in the future. Sorry.