MihanSolo Chess Engine Used AI

yay removed the makeNullMove by gettting chess.hpp to expose both

template <MoveGenType mt = MoveGenType::ALL>
void static legalmoves(Movelist &movelist, const Board &board, int pieces)
template <Color::underlying c, MoveGenType mt>
static void legalmoves(Movelist &movelist, const Board &board, int pieces);
publicly so i can use chess::Color::BLACK instead of flipping board state using null moves, also added some minor optimizaions

adding threads

fixed some bugs in mobility and added some profiling to see how to optimize this more, thinking about multithreading this function since its stateless and can easily be made thread-safe

working on adding mobility eval, its not really working rn cause i need to modify the chess.hpp library to make this reasonably fast, since it generates the bitboards of moves for each piece but doesn't make them accessible to the public.

refactoring negamax, making code simpler

removed nmp and readded test (nmp caused -200 Elo)

added null move pruning (idk if it helps yet)

meh refactored a lot

Added butterfly boards/history heuristic

added some new testing

fixed sm bugs and stuff with time management/iterative

True iterative deepening added (searches until time runs out) Before it was just upto depth 5, not good in situation where you have lots of time and want to use it

Adding time management

ADDED ITERATIVE DEEPENING, MASSIVE SPEED GAIN (5x faster from 1550ms to 300 ms)
still unit tests for iter, mvvlva, transpo, and qsearch not here lol

workign on the transposition table

Quiescence search implemented (yay!)

We got MVV_LAA move ordering!!!, around 40%-50% speedup (700 ms down from around 1400 ms)

sprt done

no ext, king safety works !!!!

trying to add search extensions

FINALLY FIXED THE BUG

std::numeric_limits<int>::min() is one smaller than -max, which causing wraparound, fixed by adding one lol

are devlogs broken wtf

fixing material bug

finding Material bug

Optimized the program by using more const & refs in function arguments but still trying to find why its dropping so much material

Quality of life upgrades -> refactored code, added logging with spdlog, and added unit tests (only for evaluation so far tho)

Bug is in evaluate function, it is actually a piece of work
i am on the verge of an existensial crisis

Moved everything to C++ and ran a basic test, huge improvement in speed. I miss you, Python, but you're just too slow 😭.

trying to find the PHANTOM ROOK

Tryign to find why C++ SLOWS IT DOWN, while its supposed to be FASTTTT.

Finally got c++ eval working to the bare minimum, not pushed to main lichess bot yet tho

Fixed checkmate bug

SPRT tests on a new heuristic!

added UCI parsing so can be used with SPRT testing and cutechess-cli

Quiescence search fleshed out with features reccomended by chess programming wiki [helps calculate long tactics to avoid loss of material/checkmate]

Made the basic negamax, a\b, and eval functions.