GRID ERROR CONDITIONS

There are two very important rules which apply to the placement of cell types in a grid:-
  • The cell adjacent to the bar in a bar cell must be either an active cell or another bar cell. ie. It must be a cell into which a letter can be entered.

  • The mouth of a tunnel cell must open onto a cell which contains a letter, or it can open onto the mouth of another tunnel cell.

If you make a request which breaks either of these rules, it will be rejected by Magnum Opus.

Two other illegal situations should also be understood.
  • By using tunnel cells, it is possible to create a word in which both ends of the word can only be interpreted as word beginnings or as word endings. Such a situation has no meaning in a crossword puzzle, and Magnum Opus can make no use of such a grid to build a puzzle.

  • It is also possible to build a loop such that the word has no beginning and no end.

These conditions are not detected until you make an attempt to save the grid, at which time you will be presented with this help screen which alerts you to the problem.