Ice queen levels are broken when run at the minimum 77x25 size
On Linux ADOM allows you to use a different terminal size than the usual 80x25 characters. The minimum terminal size on Linux is 77x25 which brakes the Ice Queen levels (you can't enter the next level on the left side).
We therefore should also increase the minimum width to 80 characters on Linux (all other ADOM versions use 80x25 by default).