public boolean hasClickableSurround(int x, int y) {
		//first check the square is actually non-mine
		if (board[x][y].isMine()) return false;

		//the square must also have at least 1 adjacent mine
		for (int i = x - 1; i <= x + 1; i++) {
			for (int j = y - 1; j <= y + 1; j++) {
				//position must exist, and we don't count centre square
				if (!positionExists(i, j) || (i == x && j == y)) continue;
				if (!board[i][j].isRevealed() && !board[i][j].isFlagged()) return true;
			}
		}

		return false;
	}