Release Igel 3.1.0 (#246)

vshcherbyna · web-flow · commit 211501a47865 · 2022-06-03T11:39:26.000+01:00
http://chess.grantnet.us/test/26098/ ELO | 30.13 +- 2.64 (95%) CONF | 60.0+0.60s Threads=1 Hash=64MB GAMES | N: 20000 W: 3906 L: 2176 D: 13918
diff --git a/history.txt b/history.txt
@@ -1,7 +1,18 @@
 Igel - open source chess engine forked from GreKo 2018.01.
 
 (c) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-(c) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+(c) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+
+Igel 3.1.0
+-------------
+03-Jun-2022
+
+- Scale eval at 1280
+- More aggressive prunning of quiets when not improving
+- Use 150 cp when razoring
+- Avoid tt cutoff for rule50
+- Improve statistics in SMP mode
+- New network trained using 16B of d5-d8 data from Igel HCE/ign-1-139b702b with d16 validation using ign-1-139b702b
 
 Igel 3.0.5
 -------------
diff --git a/src/bitboards.cpp b/src/bitboards.cpp
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/bitboards.h b/src/bitboards.h
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/eval_params.cpp b/src/eval_params.cpp
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/eval_params.h b/src/eval_params.h
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/evaluate.h b/src/evaluate.h
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/main.cpp b/src/main.cpp
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
@@ -57,7 +57,7 @@ int main(int argc, const char* argv[])
     //  for debugging purposes load official network file
     //
 
-    if (!Eval::NNUE::load_eval_file("ign-1-d593efbd")) {
+    if (!Eval::NNUE::load_eval_file("ign-1-3e998e78")) {
         std::cout << "Unable to set EvalFile. Aborting" << std::endl;
         abort();
     }
diff --git a/src/moves.cpp b/src/moves.cpp
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/moves.h b/src/moves.h
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/notation.cpp b/src/notation.cpp
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/notation.h b/src/notation.h
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/position.cpp b/src/position.cpp
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/position.h b/src/position.h
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/search.cpp b/src/search.cpp
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/search.h b/src/search.h
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/time.cpp b/src/time.cpp
@@ -1,7 +1,7 @@
 /*
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/time.h b/src/time.h
@@ -1,7 +1,7 @@
 /*
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/tt.cpp b/src/tt.cpp
@@ -1,7 +1,7 @@
 /*
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/tt.h b/src/tt.h
@@ -1,7 +1,7 @@
 /*
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/types.h b/src/types.h
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/uci.cpp b/src/uci.cpp
@@ -30,7 +30,7 @@
 #include <iostream>
 #include <sstream>
 
-const std::string VERSION = "3.0.10";
+const std::string VERSION = "3.1.0";
 
 #if defined(ENV64BIT)
     #if defined(_BTYPE)
diff --git a/src/utils.cpp b/src/utils.cpp
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
diff --git a/src/utils.h b/src/utils.h
@@ -2,7 +2,7 @@
 *  Igel - a UCI chess playing engine derived from GreKo 2018.01
 *
 *  Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)
-*  Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
+*  Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>
 *
 *  Igel is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by

Original file line number	Diff line number	Diff line change
`@@ -2,7 +2,7 @@`
`2`	`2`	`* Igel - a UCI chess playing engine derived from GreKo 2018.01`
`3`	`3`	`*`
`4`	`4`	`* Copyright (C) 2002-2018 Vladimir Medvedev <vrm@bk.ru> (GreKo author)`
`5`		`-* Copyright (C) 2018-2021 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>`
	`5`	`+* Copyright (C) 2018-2022 Volodymyr Shcherbyna <volodymyr@shcherbyna.com>`
`6`	`6`	`*`
`7`	`7`	`* Igel is free software: you can redistribute it and/or modify`
`8`	`8`	`* it under the terms of the GNU General Public License as published by`