The problem

When you try to install wine on ubuntu/debian and you get the following error:

   The following packages have unmet dependencies:
     wine : Depends: wine1.6 but it is not going to be installed
    E: Unable to correct problems, you have held broken packages.

Solution: add architecture i386

To solve this error we first enable i386 arch and then we install the wine package.

dpkg --add-architecture i386
sudo apt update
sudo apt install wine

Solution 2: Add the wine ppa

As an alternative you can add the ubunti-wine ppa and then install a newer wine:

dpkg --add-architecture i386
add-apt-repository ppa:ubuntu-wine/ppa
apt-get update
apt-get install wine1.7

As you can see the i386 arch need to be enabled also.