The deck measures 16 units by 16 units. There are 10 containers, in three classes:
A B C 6x8 4x4 4x8 4x6 4x4 4x8 4x4 4x6 4x6 4x6
Containers of classes B and C are constrained to be at least 4 units apart in at least one of the north-south or east-west directions.
An easy instance in the Essence format. Given mainly as an example.
Another instance in the Essence format.