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diff --git a/Tobii EyeX/samples/ActivatableBoardGame/Board.h b/Tobii EyeX/samples/ActivatableBoardGame/Board.h
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+++ b/Tobii EyeX/samples/ActivatableBoardGame/Board.h
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+/*
+ * Board class: Implements the game logic and the not-so-clever AI player for the exciting Gobang game.
+ *
+ * Copyright 2013 Tobii Technology AB. All rights reserved.
+ */
+
+#pragma once
+
+#include <random>
+
+class Observer;
+
+class Board
+{
+public:
+	// Represents a position on the board.
+	struct Position
+	{
+		int row;
+		int column;
+
+		Position(int paramRow, int paramColumn) : row(paramRow), column(paramColumn) { }
+	};
+
+	// Possible contents of a board position.
+	enum Marker
+	{
+		None,
+		X,
+		O
+	};
+
+	Board(int size);
+	virtual ~Board();
+
+	// gets the size of the board, which is assumed to be square: the number of positions on each side.
+	int Size() const { return _size; }
+
+	// indicates whether the game is over.
+	bool IsGameOver() const { return _playerInTurn == Marker::None; }
+
+	// gets the "name" of the lucky winner.
+	Marker GetWinner() const { return _winner; }
+
+	// gets what's on the board at a given position.
+	Marker GetMarkerAt(Position position) const;
+
+	// indicates whether it is possible to place a marker at a given position.
+	bool CanMakeMoveAt(Position position) const;
+
+	// makes a move for the human player (which will also trigger an AI move).
+	void MakeHumanPlayerMove(Position position);
+
+	// restarts the game.
+	void BeginNewGame();
+
+	// registers an observer that is notified when the board has changed.
+	void RegisterBoardChangedObserver(Observer* boardChangedObserver);
+
+private:
+	enum Orientation
+	{
+		North,
+		East,
+		Northeast,
+		Southeast,
+		OrientationMaxValue
+	};
+
+	// tests whether a position is on the board.
+	bool IsValidPosition(Position position) const;
+
+	// gets a position adjacent to the given one, in a particular direction.
+	Position GetAdjacentPosition(Position position, Orientation orientation, bool forward) const;
+
+	// prepares the board for a new, exciting game.
+	void InitBoard();
+
+	// lets the miserable AI player make a move.
+	void MakeAIPlayerMove();
+
+	// makes a move: places a marker and checks whether anyone has won or if it's a draw game.
+	void MakeMove(Position position);
+
+	// places a marker at the given position.
+	void SetMarkerAt(Position position, Marker marker);
+
+	// checks if the given position is part of a winning sequence.
+	void DetectWinner(Position position);
+
+	// checks if the game is a draw.
+	void DetectDrawGame();
+
+	// notifies the observer, if any, that the board has changed.
+	void NotifyObserver();
+
+	static const int WinningSequenceLength = 5;
+
+	static std::mt19937 _randomNumberGenerator;
+
+	int _size;
+	Marker* _board;
+	Marker _playerInTurn;
+	Marker _winner;
+	Observer* _boardChangedObserver;
+
+	// private copy constructor and operator making the class non-copyable (declared but not implemented).
+	Board(const Board&);
+	Board& operator = (const Board&);
+};