AI for the 2048 game. This uses expectimax optimization, along with a highly-efficient bitboard representation to search upwards of 10 million moves per second on recent hardware. Heuristics used include bonuses for empty squares and bonuses for placing large values near edges and corners.

Building

Unix/Linux/OS X

Run make. Any relatively recent C++ compiler should be able to build the output.

Windows

You have a few options, depending on what you have installed.

• Pure Cygwin: run make. The resulting DLL can only be used with Cygwin programs, so to run the browser control version, you must use the Cygwin Python (not the python.org Python). For step-by-step instructions, courtesy Tamas Szell (@matukaa), see this document.

• Cygwin with MinGW: run

    CXX=x86_64-w64-mingw32-g++ CXXFLAGS='-static-libstdc++ -static-libgcc -D_WINDLL -D_GNU_SOURCE=1' make
  

  to build. The resultant DLL can be used with non-Cygwin programs.

• Visual Studio: open a Visual Studio command prompt, cd to the 2048-ai directory, and run make-msvc.bat.

Running the command-line version

Run bin/2048 if you want to see the AI by itself in action.

Running the browser-control version

Install Remote Control for Firefox.

Open up the 2048 game or any compatible clone and start remote control.

Run 2048.py and watch the game!