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bitboard chess engine

License: GNU General Public License v3.0

C++ 90.05% C 7.94% Makefile 2.01%

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Threads option defined wrong ?

i successfully compiled your v3.02 source on Linux, Xubuntu 22.04, and it runs fine in CuteChess. Btw. i had no time issue with v3.01, and also v3.02 seems OK.

i see you have a threads option, but it seems wrongly defined :

uci
id name Alexandria 3.0.2
id author PGG
option name Hash type spin default 16 min 1 max 8192 
option name Threads type spin default 1 min 1 max 1 
uciok

indeed, in CuteChess i can not set threads other then 1 : the min and max are the same ?!

Alexandria doesn't find mate

Relevant fen: N6k/8/8/8/8/8/8/K6B w - - 0 1
Issue: Mate in 30 isn't found even at max depth

Please add ARMv9.2, SVE2, Dot Product and Neon support

It's sad that it's not possible to compile the newest version on Android and Linux devices.

Versions

May I suggest to include the version number in the displayed id?

Clean Nnue updates

typedef std::vector<std::pair<std::size_t, std::size_t>> so it looks less stupid.
Rewrite the entire inference to just iterate over the change lists, IE:

using CiekceISveryCool = std::vector<std::pair<std::size_t, std::size_t>>;

void NNUE::update(NNUE::accumulator& board_accumulator, PleaseCiekce& NNUEAdd, PleaseCiekce& NNUESub) {
    for (const auto [whiteAddIdx, blackAddIdx] : NNUEAdd) {
        add(board_accumulator, whiteAddIdx, blackAddIdx);
    }

    for (const auto [whiteSubIdx, blackSubIdx] : NNUESub) {
        sub(board_accumulator, whiteSubIdx, blackSubIdx);
    }
    
    // Reset the add and sub vectors
    NNUEAdd.clear();
    NNUESub.clear();
}

what is actually left to do: what a proper sub and add function.

TT move unpacking makes any tt move not null as long as ttHit is true

Make data generation stoppable via a cli command

error when using SCID

Describe the bug
when using Alexandria in SCID (newest v5.02) it gives this error after starting : The analysis engine terminated without exit code: ""

To Reproduce

add the engine to SCID
setup a starting position
select Alexandria to analyse that position

Expected behavior
the engine should evaluate the position and show its result lines

Additional context
this happens with version Alexandria v4.x upto current v5.0.14
NOTE: some other engines, even famous / strong ones, also have this issue : it seems SCID is buggy when handling the (UCI) protocol. When executing SCID by terminal no error is displayed. I'm using Xubuntu 22.04

Make data generation able to finish when closed with ctrl-c et simila

Broken compile on non x86 machines

mkdir -p ".tmp" ".tmp/src"
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/attack.cpp -o .tmp/src/attack.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/bench.cpp -o .tmp/src/bench.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/cuckoo.cpp -o .tmp/src/cuckoo.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/eval.cpp -o .tmp/src/eval.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/history.cpp -o .tmp/src/history.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/init.cpp -o .tmp/src/init.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/io.cpp -o .tmp/src/io.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/magic.cpp -o .tmp/src/magic.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/main.cpp -o .tmp/src/main.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/makemove.cpp -o .tmp/src/makemove.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/misc.cpp -o .tmp/src/misc.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/move.cpp -o .tmp/src/move.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/movegen.cpp -o .tmp/src/movegen.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/movepicker.cpp -o .tmp/src/movepicker.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/nnue.cpp -o .tmp/src/nnue.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/perft.cpp -o .tmp/src/perft.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/piece_data.cpp -o .tmp/src/piece_data.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/position.cpp -o .tmp/src/position.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/random.cpp -o .tmp/src/random.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/search.cpp -o .tmp/src/search.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/threads.cpp -o .tmp/src/threads.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/time_manager.cpp -o .tmp/src/time_manager.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/ttable.cpp -o .tmp/src/ttable.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/tune.cpp -o .tmp/src/tune.o
g++ -funroll-loops -O3 -flto -fno-exceptions -std=gnu++2a -DNDEBUG -Wall -Wcast-qual -Wextra -Wshadow -Wdouble-promotion -Wformat=2 -Wnull-dereference -Wlogical-op -Wold-style-cast -Wundef -pedantic -DNETWORK_NAME="nn.net" -DEVALFILE="nn.net" -mcpu=apple-a14 -MMD -MP -c src/uci.cpp -o .tmp/src/uci.o
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
warning: unknown warning option '-Wlogical-op'; did you mean '-Wlong-long'? [-Wunknown-warning-option]
1 warning generated.
1 warning generated.
1 warning generated.
1 warning generated.
1 warning generated.
src/init.cpp:173:9: warning: variable 'count' set but not used [-Wunused-but-set-variable]
int count = 0;
^
1 warning generated.
1 warning generated.
In file included from src/ttable.cpp:4:
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/xmmintrin.h:14:2: error: "This header is only meant to be used on x86 and x64 architecture"
#error "This header is only meant to be used on x86 and x64 architecture"
^
In file included from src/ttable.cpp:4:
In file included from /Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/xmmintrin.h:17:
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:14:2: error: "This header is only meant to be used on x86 and x64 architecture"
#error "This header is only meant to be used on x86 and x64 architecture"
^
1 warning generated.
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:37:5: error: use of undeclared identifier '__builtin_ia32_emms'; did you mean '__builtin_isless'?
__builtin_ia32_emms();
^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/math.h:507:10: note: '__builtin_isless' declared here
return __builtin_isless((type)__x, (type)__y);
^
In file included from src/ttable.cpp:4:
In file included from /Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/xmmintrin.h:17:
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:37:25: error: too few arguments to function call, expected 2, have 0
__builtin_ia32_emms();
~~~~~~~~~~~~~~~~~~~~^
1 warning generated.
1 warning generated.
1 warning generated.
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:54:19: error: use of undeclared identifier '__builtin_ia32_vec_init_v2si'
return (__m64)__builtin_ia32_vec_init_v2si(__i, 0);
^
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:71:12: error: use of undeclared identifier '__builtin_ia32_vec_ext_v2si'
return __builtin_ia32_vec_ext_v2si((__v2si)__m, 0);
^
src/nnue.cpp:92:19: warning: unused variable 'REQUIRED_ITERS' [-Wunused-const-variable]
constexpr int32_t REQUIRED_ITERS = HIDDEN_SIZE / CHUNK_SIZE;
^
1 warning generated.
src/position.cpp:509:16: warning: variable 'other' set but not used [-Wunused-but-set-variable]
ZobristKey other = (originalKey ^ OldKey(1));
^
1 warning generated.
2 warnings generated.
1 warning generated.
2 warnings generated.
1 warning generated.
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:133:19: error: use of undeclared identifier '__builtin_ia32_packsswb'
return (__m64)__builtin_ia32_packsswb((__v4hi)__m1, (__v4hi)__m2);
^
1 warning generated.
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:163:19: error: use of undeclared identifier '__builtin_ia32_packssdw'
return (__m64)__builtin_ia32_packssdw((__v2si)__m1, (__v2si)__m2);
^
1 warning generated.
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:193:19: error: use of undeclared identifier '__builtin_ia32_packuswb'
return (__m64)__builtin_ia32_packuswb((__v4hi)__m1, (__v4hi)__m2);
^
1 warning generated.
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:220:19: error: use of undeclared identifier '__builtin_ia32_punpckhbw'
return (__m64)__builtin_ia32_punpckhbw((__v8qi)__m1, (__v8qi)__m2);
^
1 warning generated.
1 warning generated.
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:243:19: error: use of undeclared identifier '__builtin_ia32_punpckhwd'
return (__m64)__builtin_ia32_punpckhwd((__v4hi)__m1, (__v4hi)__m2);
^
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:264:19: error: use of undeclared identifier '__builtin_ia32_punpckhdq'
return (__m64)__builtin_ia32_punpckhdq((__v2si)__m1, (__v2si)__m2);
^
1 warning generated.
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:291:19: error: use of undeclared identifier '__builtin_ia32_punpcklbw'
return (__m64)__builtin_ia32_punpcklbw((__v8qi)__m1, (__v8qi)__m2);
^
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:314:19: error: use of undeclared identifier '__builtin_ia32_punpcklwd'
return (__m64)__builtin_ia32_punpcklwd((__v4hi)__m1, (__v4hi)__m2);
^
2 warnings generated.
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:335:19: error: use of undeclared identifier '__builtin_ia32_punpckldq'
return (__m64)__builtin_ia32_punpckldq((__v2si)__m1, (__v2si)__m2);
^
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:356:19: error: use of undeclared identifier '__builtin_ia32_paddb'; did you mean '__builtin_arm_addg'?
return (__m64)__builtin_ia32_paddb((__v8qi)__m1, (__v8qi)__m2);
^
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:37:5: note: '__builtin_arm_addg' declared here
__builtin_ia32_emms();
^
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:356:19: error: first argument of MTE builtin function must be a pointer ('__v8qi' (vector of 8 'char' values) invalid)
return (__m64)__builtin_ia32_paddb((__v8qi)__m1, (__v8qi)__m2);
^ ~~~~~~~~~~~~
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:377:19: error: use of undeclared identifier '__builtin_ia32_paddw'; did you mean '__builtin_arm_addg'?
return (__m64)__builtin_ia32_paddw((__v4hi)__m1, (__v4hi)__m2);
^
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:37:5: note: '__builtin_arm_addg' declared here
__builtin_ia32_emms();
^
/Library/Developer/CommandLineTools/usr/lib/clang/15.0.0/include/mmintrin.h:377:19: error: first argument of MTE builtin function must be a pointer ('__v4hi' (vector of 4 'short' values) invalid)
return (__m64)__builtin_ia32_paddw((__v4hi)__m1, (__v4hi)__m2);
^ ~~~~~~~~~~~~
fatal error: too many errors emitted, stopping now [-ferror-limit=]
1 warning and 20 errors generated.
make: *** [.tmp/src/ttable.o] Error 1

LiChess bot ?

I see you have a LiChess bot. I find the link https://lichess.org/player/bots but Alexandria is not there .. can we play online ?

Datagen not saved even for 2 game after 1 hour

HashTable init complete with 1398099 entries
id name Alexandria 4.0-dev
datagen
Starting datagen with 2 threads and an estimated total of 2 games
HashTable init complete with 5592403 entries
Datagen started successfully

Checkmate takes precedence over the 50 move rule

Describe the bug
Checkmate takes precedence over the 50 move rule

To Reproduce

position fen 4Q3/8/1p4pk/1PbB1p1p/7P/p3P1PK/P3qP2/8 w - - 99 88
go depth 5
info time: -1 start: 279924963 stopOpt: 0 stopMax: 0 depth: 5 timeset: 0 nodeset: 0
  1/1       0ms       62n       +0.01     62kn/s d5g8
  2/2       1ms       98n       -0.01     98kn/s d5g8
  3/4       2ms      180n       -0.01     90kn/s d5b3
  4/4       3ms      349n       -0.01    116kn/s d5e4
  5/5       4ms      413n       -0.01    103kn/s d5g8
bestmove d5g8

Expected behavior
Mate in 1 evaluation

Allow Custom bench depths

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D3

Data-Driven Documents codes.
Tencent

China tencent open source team.