Stockfish+

George Sobala · Post by **George Sobala** » Tue Jan 04, 2022 10:06 pm

Hash not an issue. I searched in two parallel windows side by side. Could you perhaps show a printout of the results of an MCTS search from startpos, eg go movetime 1000?

This is what I get:

PS C:\Users\gsoba\Development\stockfish-plus\src> .\stockfish+040122_x64_avx2.exe
Stockfish+ 040122 by the Stockfish developers (see AUTHORS file)

Compiled using : g++ (GNUC) 10.2.0 on MinGW64
Compile settings : 64bit AVX2 SSE41 SSSE3 SSE2 POPCNT
Build date/time : 2022-Jan-04 05:57:24

Operating System : Windows 10 Client Or Greater
CPU Brand : AMD Ryzen 7 2700X Eight-Core Processor
L1/L2/L3 cache : 768KB/4MB/16MB
Memory (RAM) : 16GB
Hyper-Threading : Yes
NUMA Nodes : 1
Cores : 8
Threads : 16

Large Pages : No

ucinewgame
go movetime 1000
info string NNUE evaluation using nn-ac07bd334b62.nnue enabled
info depth 1 seldepth 1 multipv 1 score cp 32 nodes 20 nps 10000 tbhits 0 time 2 pv d2d4
info depth 2 seldepth 2 multipv 1 score cp 93 nodes 47 nps 23500 tbhits 0 time 2 pv d2d4 a7a6
info depth 3 seldepth 3 multipv 1 score cp -7 nodes 243 nps 121500 tbhits 0 time 2 pv d2d4 a7a6 d4d5
info depth 4 seldepth 4 multipv 1 score cp 45 nodes 358 nps 179000 tbhits 0 time 2 pv e2e4 a7a6 c2c4
info depth 5 seldepth 5 multipv 1 score cp 56 nodes 643 nps 214333 tbhits 0 time 3 pv g1f3 a7a6 c2c4
info depth 6 seldepth 6 multipv 1 score cp 90 nodes 1493 nps 373250 tbhits 0 time 4 pv e2e4 d7d5 e4d5
info depth 7 seldepth 7 multipv 1 score cp 33 nodes 4417 nps 736166 tbhits 0 time 6 pv g1f3 d7d5 d2d4 g8f6 c2c4 d5c4 d1a4 c8d7
info depth 8 seldepth 8 multipv 1 score cp 62 nodes 5677 nps 811000 tbhits 0 time 7 pv e2e4 g7g6 d2d4 d7d6 b1c3 f8g7
info depth 9 seldepth 11 multipv 1 score cp 63 nodes 12142 nps 934000 tbhits 0 time 13 pv e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f3e5 d7d6
info depth 10 seldepth 12 multipv 1 score cp 47 nodes 16034 nps 1002125 tbhits 0 time 16 pv e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g8f6 f1d3 g7g6 e1g1
info depth 11 seldepth 15 multipv 1 score cp 54 nodes 26889 nps 995888 tbhits 0 time 27 pv e2e4 e7e5 g1f3 g8f6 d2d4 d7d5 e4d5 e5d4 c2c4 d4c3 b1c3
info depth 12 seldepth 17 multipv 1 score cp 31 nodes 71136 nps 1030956 tbhits 0 time 69 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 a2a3
info depth 13 seldepth 20 multipv 1 score cp 29 nodes 103797 nps 1037970 tbhits 0 time 100 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g7g6 c2c3 g8f6 f1e1 f8g7 h2h3 e8g8 d2d4 c5d4 c3d4
info depth 14 seldepth 18 multipv 1 score cp 30 nodes 113522 nps 1051129 tbhits 0 time 108 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g8f6 f1e1 e7e6 c2c3 f8e7 h2h3 e8g8 d2d4 c5d4
info depth 15 seldepth 20 multipv 1 score cp 31 nodes 141066 nps 1052731 tbhits 0 time 134 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g8f6 f1e1 e7e6 c2c3 f8e7 h2h3 e8g8 d2d4 h7h6 d4d5 e6d5 e4d5
info depth 16 seldepth 22 multipv 1 score cp 38 nodes 156669 nps 1058574 tbhits 0 time 148 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g8f6 f1e1 e7e6 c2c3 f8e7 h2h3 b8c6 d2d4 e8g8
info depth 17 seldepth 22 multipv 1 score cp 41 nodes 216145 nps 1064753 tbhits 0 time 203 pv e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3 d7d5 f3e5 f8d6 c2c4 b8c6 e5c6 b7c6 e1g1 e8g8
info depth 18 seldepth 22 multipv 1 score cp 51 nodes 362947 nps 1061248 tbhits 0 time 342 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 b8d7 e4f6 d7f6 g1f3 f8e7 f1d3 h7h6 g5h4 c7c5
info depth 19 seldepth 26 multipv 1 score cp 50 nodes 486909 nps 1044869 tbhits 0 time 466 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 b8d7 e4f6 d7f6 g1f3 h7h6 g5f6 d8f6 f1d3 a7a6 d1e2 c7c5 e1c1 c5d4
info depth 20 seldepth 24 multipv 1 score cp 40 nodes 638309 nps 1058555 tbhits 0 time 603 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 f8e7 e4f6 e7f6 g5f6 d8f6 g1f3 c7c5 d1d2 c5d4 e1c1 b8c6 f1b5 e6e5 b5c6 b7c6
info depth 21 seldepth 31 multipv 1 score cp 33 nodes 1039576 nps 1038537 hashfull 427 tbhits 0 time 1001 pv e2e4 c7c5
bestmove e2e4 ponder c7c5
quit
PS C:\Users\gsoba\Development\stockfish-plus\src> .\stockfish+040122_x64_avx2.exe
Stockfish+ 040122 by the Stockfish developers (see AUTHORS file)

Compiled using : g++ (GNUC) 10.2.0 on MinGW64
Compile settings : 64bit AVX2 SSE41 SSSE3 SSE2 POPCNT
Build date/time : 2022-Jan-04 05:57:24

Operating System : Windows 10 Client Or Greater
CPU Brand : AMD Ryzen 7 2700X Eight-Core Processor
L1/L2/L3 cache : 768KB/4MB/16MB
Memory (RAM) : 16GB
Hyper-Threading : Yes
NUMA Nodes : 1
Cores : 8
Threads : 16

Large Pages : No

ucinewgame
setoption name MCTS value true
go movetime 1000
info string NNUE evaluation using nn-ac07bd334b62.nnue enabled
info depth 1 seldepth 1 multipv 1 score cp 32 nodes 20 nps 20000 tbhits 0 time 1 pv d2d4
info depth 2 seldepth 2 multipv 1 score cp 93 nodes 47 nps 23500 tbhits 0 time 2 pv d2d4 a7a6
info depth 3 seldepth 3 multipv 1 score cp -7 nodes 243 nps 121500 tbhits 0 time 2 pv d2d4 a7a6 d4d5
info depth 4 seldepth 4 multipv 1 score cp 45 nodes 358 nps 179000 tbhits 0 time 2 pv e2e4 a7a6 c2c4
info depth 5 seldepth 5 multipv 1 score cp 56 nodes 643 nps 214333 tbhits 0 time 3 pv g1f3 a7a6 c2c4
info depth 6 seldepth 6 multipv 1 score cp 90 nodes 1493 nps 497666 tbhits 0 time 3 pv e2e4 d7d5 e4d5
info depth 7 seldepth 7 multipv 1 score cp 33 nodes 4417 nps 736166 tbhits 0 time 6 pv g1f3 d7d5 d2d4 g8f6 c2c4 d5c4 d1a4 c8d7
info depth 8 seldepth 8 multipv 1 score cp 62 nodes 5677 nps 811000 tbhits 0 time 7 pv e2e4 g7g6 d2d4 d7d6 b1c3 f8g7
info depth 9 seldepth 11 multipv 1 score cp 63 nodes 12142 nps 1011833 tbhits 0 time 12 pv e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f3e5 d7d6
info depth 10 seldepth 12 multipv 1 score cp 47 nodes 16034 nps 1002125 tbhits 0 time 16 pv e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g8f6 f1d3 g7g6 e1g1
info depth 11 seldepth 15 multipv 1 score cp 54 nodes 26889 nps 995888 tbhits 0 time 27 pv e2e4 e7e5 g1f3 g8f6 d2d4 d7d5 e4d5 e5d4 c2c4 d4c3 b1c3
info depth 12 seldepth 17 multipv 1 score cp 31 nodes 71136 nps 1030956 tbhits 0 time 69 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 a2a3
info depth 13 seldepth 20 multipv 1 score cp 29 nodes 103797 nps 1037970 tbhits 0 time 100 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g7g6 c2c3 g8f6 f1e1 f8g7 h2h3 e8g8 d2d4 c5d4 c3d4
info depth 14 seldepth 18 multipv 1 score cp 30 nodes 113522 nps 1051129 tbhits 0 time 108 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g8f6 f1e1 e7e6 c2c3 f8e7 h2h3 e8g8 d2d4 c5d4
info depth 15 seldepth 20 multipv 1 score cp 31 nodes 141066 nps 1052731 tbhits 0 time 134 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g8f6 f1e1 e7e6 c2c3 f8e7 h2h3 e8g8 d2d4 h7h6 d4d5 e6d5 e4d5
info depth 16 seldepth 22 multipv 1 score cp 38 nodes 156669 nps 1058574 tbhits 0 time 148 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g8f6 f1e1 e7e6 c2c3 f8e7 h2h3 b8c6 d2d4 e8g8
info depth 17 seldepth 22 multipv 1 score cp 41 nodes 216145 nps 1070024 tbhits 0 time 202 pv e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3 d7d5 f3e5 f8d6 c2c4 b8c6 e5c6 b7c6 e1g1 e8g8
info depth 18 seldepth 22 multipv 1 score cp 51 nodes 362947 nps 1058154 tbhits 0 time 343 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 b8d7 e4f6 d7f6 g1f3 f8e7 f1d3 h7h6 g5h4 c7c5
info depth 19 seldepth 26 multipv 1 score cp 50 nodes 486909 nps 1042631 tbhits 0 time 467 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 b8d7 e4f6 d7f6 g1f3 h7h6 g5f6 d8f6 f1d3 a7a6 d1e2 c7c5 e1c1 c5d4
info depth 20 seldepth 24 multipv 1 score cp 40 nodes 638309 nps 1056802 tbhits 0 time 604 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 f8e7 e4f6 e7f6 g5f6 d8f6 g1f3 c7c5 d1d2 c5d4 e1c1 b8c6 f1b5 e6e5 b5c6 b7c6
info depth 21 seldepth 31 multipv 1 score cp 33 nodes 1039576 nps 1037500 hashfull 427 tbhits 0 time 1002 pv e2e4 c7c5
bestmove e2e4 ponder c7c5
quit
PS C:\Users\gsoba\Development\stockfish-plus\src>

kranium · Post by **kranium** » Tue Jan 04, 2022 10:39 pm

Code: Select all

Stockfish+ 040122 by the Stockfish developers (see AUTHORS file)

Compiled using   : g++ (GNUC) 10.2.0 on MinGW64
Compile settings : 64bit AVX2 SSE41 SSSE3 SSE2 POPCNT
Build date/time  : 2022-Jan-04 05:57:24

Operating System : Windows 10 Client Or Greater
CPU Brand        : Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
L1/L2/L3 cache   : 512KB/2MB/16MB
Memory (RAM)     : 32GB
Hyper-Threading  : Yes
NUMA Nodes       : 1
Cores            : 8
Threads          : 16

Large Pages      : Yes

go movetime 1000
info string NNUE evaluation using nn-ac07bd334b62.nnue enabled
info depth 1 seldepth 1 multipv 1 score cp 32 nodes 20 nps 10000 tbhits 0 time 2 pv d2d4
info depth 2 seldepth 2 multipv 1 score cp 93 nodes 47 nps 23500 tbhits 0 time 2 pv d2d4 a7a6
info depth 3 seldepth 3 multipv 1 score cp -7 nodes 243 nps 121500 tbhits 0 time 2 pv d2d4 a7a6 d4d5
info depth 4 seldepth 4 multipv 1 score cp 45 nodes 358 nps 119333 tbhits 0 time 3 pv e2e4 a7a6 c2c4
info depth 5 seldepth 5 multipv 1 score cp 56 nodes 643 nps 214333 tbhits 0 time 3 pv g1f3 a7a6 c2c4
info depth 6 seldepth 6 multipv 1 score cp 90 nodes 1493 nps 373250 tbhits 0 time 4 pv e2e4 d7d5 e4d5
info depth 7 seldepth 7 multipv 1 score cp 33 nodes 4417 nps 490777 tbhits 0 time 9 pv g1f3 d7d5 d2d4 g8f6 c2c4 d5c4 d1a4 c8d7
info depth 8 seldepth 8 multipv 1 score cp 62 nodes 5677 nps 516090 tbhits 0 time 11 pv e2e4 g7g6 d2d4 d7d6 b1c3 f8g7
info depth 9 seldepth 11 multipv 1 score cp 63 nodes 12142 nps 607100 tbhits 0 time 20 pv e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f3e5 d7d6
info depth 10 seldepth 12 multipv 1 score cp 47 nodes 16034 nps 616692 tbhits 0 time 26 pv e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g8f6 f1d3 g7g6 e1g1
info depth 11 seldepth 15 multipv 1 score cp 54 nodes 26889 nps 611113 tbhits 0 time 44 pv e2e4 e7e5 g1f3 g8f6 d2d4 d7d5 e4d5 e5d4 c2c4 d4c3 b1c3
info depth 12 seldepth 17 multipv 1 score cp 31 nodes 71136 nps 718545 tbhits 0 time 99 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 a2a3
info depth 13 seldepth 20 multipv 1 score cp 29 nodes 103797 nps 804627 tbhits 0 time 129 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g7g6 c2c3 g8f6 f1e1 f8g7 h2h3 e8g8 d2d4 c5d4 c3d4
info depth 14 seldepth 18 multipv 1 score cp 30 nodes 113522 nps 822623 tbhits 0 time 138 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g8f6 f1e1 e7e6 c2c3 f8e7 h2h3 e8g8 d2d4 c5d4
info depth 15 seldepth 20 multipv 1 score cp 31 nodes 141066 nps 865435 tbhits 0 time 163 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g8f6 f1e1 e7e6 c2c3 f8e7 h2h3 e8g8 d2d4 h7h6 d4d5 e6d5 e4d5
info depth 16 seldepth 22 multipv 1 score cp 38 nodes 156669 nps 833345 tbhits 0 time 188 pv e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 g8f6 f1e1 e7e6 c2c3 f8e7 h2h3 b8c6 d2d4 e8g8
info depth 17 seldepth 22 multipv 1 score cp 41 nodes 216145 nps 780306 tbhits 0 time 277 pv e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3 d7d5 f3e5 f8d6 c2c4 b8c6 e5c6 b7c6 e1g1 e8g8
info depth 18 seldepth 22 multipv 1 score cp 51 nodes 362947 nps 772227 tbhits 0 time 470 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 b8d7 e4f6 d7f6 g1f3 f8e7 f1d3 h7h6 g5h4 c7c5
info depth 19 seldepth 26 multipv 1 score cp 50 nodes 486909 nps 745649 tbhits 0 time 653 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 b8d7 e4f6 d7f6 g1f3 h7h6 g5f6 d8f6 f1d3 a7a6 d1e2 c7c5 e1c1 c5d4
info depth 20 seldepth 24 multipv 1 score cp 40 nodes 638309 nps 739639 tbhits 0 time 863 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 f8e7 e4f6 e7f6 g5f6 d8f6 g1f3 c7c5 d1d2 c5d4 e1c1 b8c6 f1b5 e6e5 b5c6 b7c6
info depth 21 seldepth 24 multipv 1 score cp 40 nodes 757861 nps 756348 hashfull 316 tbhits 0 time 1002 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 f8e7 e4f6 e7f6 g5f6 d8f6 g1f3 c7c5 d1d2 c5d4 e1c1 b8c6 f1b5 e6e5 b5c6 b7c6
bestmove e2e4 ponder e7e6
setoption name MCTS value true
go movetime 1000
info string NNUE evaluation using nn-ac07bd334b62.nnue enabled
info depth 1 seldepth 1 multipv 1 score cp 40 nodes 24 nps 12000 tbhits 0 time 2 pv e2e4
info depth 2 seldepth 2 multipv 1 score cp 54 nodes 49 nps 24500 tbhits 0 time 2 pv e2e4 c7c5
info depth 3 seldepth 3 multipv 1 score cp 52 nodes 75 nps 37500 tbhits 0 time 2 pv e2e4 c7c5 g1f3
info depth 4 seldepth 4 multipv 1 score cp 52 nodes 160 nps 80000 tbhits 0 time 2 pv e2e4 c7c5 g1f3
info depth 5 seldepth 5 multipv 1 score cp 50 nodes 269 nps 134500 tbhits 0 time 2 pv e2e4 e7e5 g1f3 g8f6 d2d4
info depth 6 seldepth 6 multipv 1 score cp 52 nodes 453 nps 226500 tbhits 0 time 2 pv e2e4 e7e5 g1f3 b8c6 f1b5 a7a6
info depth 7 seldepth 7 multipv 1 score cp 50 nodes 632 nps 210666 tbhits 0 time 3 pv e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3 d7d5
info depth 8 seldepth 8 multipv 1 score cp 50 nodes 929 nps 309666 tbhits 0 time 3 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4
info depth 9 seldepth 9 multipv 1 score cp 50 nodes 1219 nps 406333 tbhits 0 time 3 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4
info depth 10 seldepth 11 multipv 1 score cp 52 nodes 2547 nps 636750 tbhits 0 time 4 pv e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 e7e5 f1b5 c8d7 b5d7 b8d7
info depth 11 seldepth 13 multipv 1 score cp 50 nodes 4475 nps 639285 tbhits 0 time 7 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 f8e7 g5f6 e7f6 g1f3
info depth 12 seldepth 15 multipv 1 score cp 50 nodes 5249 nps 749857 tbhits 0 time 7 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 f8e7 g5f6 e7f6 g1f3 b8d7 f1d3
info depth 13 seldepth 18 multipv 1 score cp 50 nodes 7228 nps 803111 tbhits 0 time 9 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 h7h6 g5f6 d8f6 a2a3 f6d8 f2f4 f8e7 d1d2 e8g8
info depth 14 seldepth 21 multipv 1 score cp 45 nodes 12427 nps 887642 tbhits 0 time 14 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 h7h6 g5f6 d8f6 a2a3 f6d8 f2f4 f8e7 d1d2 a7a6 g1f3 b7b5 e4d5 e6d5 f1d3
info depth 15 seldepth 26 multipv 1 score cp 50 nodes 22690 nps 872692 tbhits 0 time 26 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 f8e7 g5f6 e7f6 g1f3 e8g8 e4f6 d8f6 d1e2 f6f4 e2e3 f4e3 f2e3
info depth 16 seldepth 24 multipv 1 score cp 49 nodes 39008 nps 764862 tbhits 0 time 51 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 h7h6 g5f6 d8f6 e4d5 f8b4 d5e6 c8e6 g1f3
info depth 17 seldepth 19 multipv 1 score cp 49 nodes 44676 nps 797785 tbhits 0 time 56 pv e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 h7h6 g5f6 d8f6 e4d5 f8b4 d5e6 c8e6 g1f3 b8c6 f1b5 e8c8 b5c6
info depth 18 seldepth 26 multipv 1 score cp 46 nodes 107282 nps 924844 tbhits 0 time 116 pv e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 c6d4 d2d4 a7a6
info depth 19 seldepth 25 multipv 1 score cp 35 nodes 322964 nps 767135 tbhits 0 time 421 pv e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 b5c6 b7c6 e1g1 f8g7 h2h3 e7e5 c2c3 g8e7 d2d4 e5d4 c3d4 c5d4
info depth 20 seldepth 30 multipv 1 score cp 24 nodes 718596 nps 717878 hashfull 326 tbhits 0 time 1001 pv e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 e1g1 f8g7 f1e1 e7e5 b5c6 b7c6 c2c3 g8e7 d2d4 c5d4 c3d4 e5d4 f3d4 e8g8 b1c3 d7d5 e4d5
bestmove e2e4 ponder c7c5

George, let's please take any further discussion concerning this to the github repository Issues.

George Sobala · Post by **George Sobala** » Tue Jan 04, 2022 10:57 pm

You did not clear the hash. Please could you show output of setoption name MCTS value true from a fresh start?

Eduard · Post by **Eduard** » Fri Jan 07, 2022 5:18 pm

BUG found in Stockfish+ MCTS. I already wrote that MCTS plays very well but has problems in the endgame. Stockfish+ MCTS could just have set Mate on PlayChess, with one minute on the clock !! The engine indicated mate in 5, but did not move, instead timed out.

[Event "Rated game, 5 min"]
[Site "Engine Room"]
[Date "2022.01.07"]
[Round "?"]
[White "SolistaChess, Stockfish+ 020122 MCTS"]
[Black "Hans Auer, Fritz 18 Popcnt"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2721"]
[BlackElo "2707"]
[Annotator "0.39;0.07"]
[PlyCount "116"]
[EventDate "2022.01.07"]
[SourceTitle "playchess.com"]
[TimeControl "300"]

{Fritz 18 Popcnt (16 cores): 25.3 plies; 24.101kN/s AMD Ryzen 9 3950X 16-Core
Processor 3493MHz, (16 cores, 32 threads), Solista v2 lite.ctg, 4096 MB}
1. Nf3 {B 0} d5 {B 0} 2. d4 {B 0} Nf6 {B 0} 3. Bf4 {B 0} c5 {B 0} 4. e3 {B 0}
Nc6 {B 0} 5. Nbd2 {B 0} e6 {B 0} 6. c3 {B 0} Bd6 {B 0} 7. Bg3 {B 0} O-O {B 0}
8. Bd3 {B 0} Qe7 {B 0} 9. Ne5 {0.39/29 6} Nd7 {B 0 (Qc7)} 10. Nxd7 {0.50/31 5}
Qxd7 {B 0} 11. O-O {0.58/31 5} Qe7 {B 0} 12. Bxd6 {0.40/33 23} Qxd6 {B 0} 13.
f4 {0.41/31 3} Bd7 {B 0} 14. Rf2 {0.48/29 6} g6 {0.07/22 8 (Be8)} 15. Qg4 {
0.41/31 17 (Df3)} c4 {0.01/23 5 (Ne7)} 16. Bc2 {0.36/33 26} b5 {0.09/27 3 (f5)}
17. e4 {0.73/27 3 (Dg5)} b4 {0.10/27 20 (f5)} 18. e5 {1.19/30 3 (Dh3)} Qe7 {
0.05/23 5} 19. h4 {1.28/36 19 (Taf1)} bxc3 {-0.01/26 7} 20. bxc3 {1.41/35 0}
Qa3 {0.01/28 2} 21. Nf3 {1.18/38 17} Qxc3 {-0.01/31 0} 22. Rd1 {1.39/32 1} Qa3
{0.01/28 4 (Qb4)} 23. h5 {1.04/35 4} Qe7 {0.01/29 0} 24. Qh3 {1.09/35 8 (Sg5)}
Kg7 {0.01/25 8 (Be8)} 25. Nh2 {2.82/26 5 (g4)} Nb4 {0.86/24 24} 26. Bb1 {
3.54/32 0} Kh8 {0.80/26 14 (Ba4)} 27. Ng4 {4.47/25 3} Rg8 {0.91/25 3} 28. Nf6 {
4.56/26 0} Rg7 {0.97/25 7} 29. g4 {3.87/28 3} Rb8 {0.99/25 9} 30. Rh2 {4.40/28
0} Be8 {1.16/25 7} 31. Kh1 {4.43/29 0 (h6)} Rb6 {1.90/20 14 (Nc6)} 32. Qa3 {
4.67/25 5 (Tf1)} Ra6 {1.47/22 13} 33. Qe3 {5.17/28 0} Nc6 {1.52/24 9 (Rb6)} 34.
Rh3 {5.84/23 3 (hxg6)} Rb6 {2.21/21 10 (Qf8)} 35. f5 {5.89/23 2} Rb2 {2.25/23 6
} 36. Nxe8 {7.19/25 0} Rxb1 {3.28/27 12} 37. Rxb1 {8.14/26 0} Qxe8 {3.89/29 11}
38. hxg6 {8.30/28 0} fxg6 {4.28/27 10} 39. f6 {8.53/28 0} Rf7 {4.48/27 9 (Rc7)}
40. Rh2 {9.25/23 2} a5 {5.18/24 6 (Qg8)} 41. Rhb2 {10.26/22 4} Kg8 {6.46/24 3}
42. Kg2 {10.57/21 0 (Tb6)} Qf8 {6.70/23 7 (Nb4)} 43. Rb6 {11.69/20 3} Nb4 {
7.62/24 4 (Rc7)} 44. a3 {12.86/36 6} Qd8 {8.82/21 0} 45. Rd6 {13.53/17 2} Qb8 {
10.16/21 4} 46. Qf3 {13.56/18 0 (axb4)} Rb7 {9.57/21 6 (Qf8)} 47. axb4 {
15.00/18 5} Qc8 {10.77/20 0} 48. b5 {18.48/17 1} a4 {12.66/20 4 (Qe8)} 49. Qe3
{25.17/18 2 (Da3)} a3 {13.85/20 5 (Rf7)} 50. Qxa3 {#12/51 2} h6 {20.35/21 2
(h5)} 51. Ra6 {#9/56 2} Rb8 {#9/21 0} 52. Ra7 {#8/68 1} Qf8 {#8/19 0} 53. Ra1 {
#7/81 2 (Tg7+)} Qxa3 {#6/15 0} 54. R1xa3 {#6/219 1} g5 {#5/13 0 (Kh8)} 55. Rg7+
{#5/245 1} Kf8 {#4/11 0} 56. Raa7 {#4/245 0 (Th7)} Rc8 {#3/9 0 (h5)} 57. Rh7 {
#3/245 0} Kg8 {#2/7 0} 58. Rag7+ {#2/245 0} Kf8 {#1/6 0 Time (Lag: Av=0.21s,
max=0.6s)} 0-1

[fen]2r2k2/6RR/4pP1p/1P1pP1p1/2pP2P1/8/6K1/8 w - - 0 59[/fen]

kranium · Post by **kranium** » Fri Jan 07, 2022 5:26 pm

Thx Eduard-

I haven't seen anything like that in my testing, but I'll take a close look.
I'll create an issue on github and address it there.
https://github.com/FireFather/stockfish-plus

BTW - there have been two updates since 020122...040122 & 070122

Eduard · Post by **Eduard** » Fri Jan 07, 2022 5:44 pm

Thank you!

The problem only occurs in the MCTS endgame and when a major advantage is assessed. Then the engine move slowly and calculates less deeply than without MCTS. So far it was enough to win the advantageous positions. But now it has happened, Engine sees a mate and gets stuck.

kranium · Post by **kranium** » Fri Jan 07, 2022 6:17 pm

Eduard wrote: ↑Fri Jan 07, 2022 5:44 pm Thank you! The problem only occurs in the MCTS endgame and when a major advantage is assessed. Then the engine move slowly and calculates less deeply than without MCTS. So far it was enough to win the advantageous positions. But now it has happened, Engine sees a mate and gets stuck.

Before I pushed 070122 to github today, it ran overnight (8 hours) on 2 machines (an Intel i9-9900K and an AMD Ryzen 9 3900X) playing vs itself at 10 min + 5 sec games with no issues.

BTW:
How many games did you successfully finish before this happened?
Are you willing to test 070122 in a similar fashion?
What hash size were you using?

Eduard · Post by **Eduard** » Fri Jan 07, 2022 7:12 pm

That doesn't happen with draws. It happens on PlayChess, and whenever the engine sees itself clearly at an advantage in the endgame. So far, all other opponents have given up before they are mated.

I use 4 GB hash (with Ryzen 3900X), that's as much as with all other engines. The last time I played with Kayra 1560 games in a row, and that is my first loss since Dec. 14, 2021.

kranium · Post by **kranium** » Fri Jan 07, 2022 7:26 pm

Eduard wrote: ↑Fri Jan 07, 2022 7:12 pm That doesn't happen with draws. It happens on PlayChess, and whenever the engine sees itself clearly at an advantage in the endgame. So far, all other opponents have given up before they are mated.

I use 4 GB hash (with Ryzen 3900X), that's as much as with all other engines. The last time I played with Kayra 1560 games in a row, and that is my first loss since Dec. 14, 2021.

Ok thx

Cumnor · Post by **Cumnor** » Fri Jan 07, 2022 8:52 pm

Eduard wrote: ↑Fri Jan 07, 2022 7:12 pm That doesn't happen with draws. It happens on PlayChess, and whenever the engine sees itself clearly at an advantage in the endgame. So far, all other opponents have given up before they are mated.

I use 4 GB hash (with Ryzen 3900X), that's as much as with all other engines. The last time I played with Kayra 1560 games in a row, and that is my first loss since Dec. 14, 2021.

Were you using the option GUI tablebases or engine tablebases? I found that using GUI tablebases on playchess when getting low on time I would either get a draw in a winning position or a time loss due to engine not moving but that was with any engine, about two years ago.

Stockfish+

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