It is a free solution method which does not need to immobilize the binding partners.
A numerical solution method was provided by Schroder in 1995.
There are always implicit assumptions behind a model and its solution method.
Clues sometimes offer multiple solution methods, and false solutions are incorporated into them.
This condition is correctly applied in the second solution method, but not in the first.
One solution method is to label the card faces, for example numbers 1 through 6.
More details including the solution methods can be found in board puzzles with algebra of binary variables.
Researchers should carefully consider the results of accuracy tests while choosing solution methods and pay particular attention to grid selection.
Depending on the solution method, these bounds can be treated as constraints or separately.
Many solution methods work only with single objectives.