Here you can find supplementary material for the Real Python tutorial Minimax in Python: Learn How to Lose the Game of Nim.

This directory contains source code from the tutorial. Additionally, nim/ contains an implementation of a small game engine that allows you to play Nim against a minimax player.

Run the game as follows:

$ cd nim/
$ python nim.py

Make your choices by entering a corresponding character and hit enter. You can choose between the different variants that are described in the tutorial.

If you want to add a variant yourself, you can do so by adding a new file named with a game_ prefix. Inside this file, you need to implement the following functions:

• initial_state() should set up the initial game state.
• possible_new_states(state) should list the possible states that you can move to from the current state.
• evaluate(state, is_maximizing) should evaluate an end game state and return None if the game isn't over.

See the existing game_*.py files for examples.

• Geir Arne Hjelle, E-mail: geirarne@realpython.com

Distributed under the MIT license. See LICENSE for more information.