Module game 

Structs

Coord

Coord represents a coordinate on the board, e.g. a0, or k8 The column is a letter for the columns, and the row is expressed as a number

Game

The main state of the game.

Move

The struct representing a move, as a couple of Coords.

Enums

Player

The enum for the player.

Functions

play_move

The main entry point for the game engine: Take a game state and a move, and return another game state. The game state contains an error field in case something went wrong, but otherwise it is assumed that the returned game instance is the state of the game after the move was applied.