This is C++ variant that can be played fully on compile time. After compilation, compiler knows the result(s) and saves only instructions needed for printing the strings such as "Checkmate!" etc.
For this to work it requires at least C++17 with following args:
-std=c++17 -O3 -fconstexpr-steps=351843720
If you are compiling multiple games (more than 2 usually), it takes a lot of time.
If you are brave enough tho & have powerful machine, feel free to uncomment code in the main function that will allow to play specified amount (N) of games.