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Chess engine: Cosette 5.0 (Megumin)

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Cosette - UCI chess engine (written in C# for .NET Core platform
Rating JCER=2550, Author: Paweł Tearth

v. 5.0:
Added more detailed evaluation info in pawn hash table entry
Added futility pruning to quiescence search
Added reuse of killer table between moves
Added razoring
Added ability to stop the search if reliable mate score was found
Added search cut when enemy king is checked
Added detection of the open file next to the king in the evaluation
Added history heuristic veto in LMR
Added late move pruning
Fixed insufficient material detection when both sides had knight or bishop
Fixed threefold repetition detection
Fixed invalid depth in killer heuristic
Fixed memory usage issues during the search
Adjusted search parameters
Adjusted evaluation parameters
Allowed to use history heuristic values from the previous iterations
Allowed late move reduction when capture has a negative score
Improved time management when incrementation is present
Improved Fianchetto detection
Improved history table structure
Enabled support for BMI instruction set (only if CPU supports it)
Disabled futility pruning when enemy king is checked



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