Zudoku Logo  Strategy Detailed Descriptions

Intermediate Strategies

Note that using the Hint or Solve menu for these strategies requires Conflicts Marked as Impossible first. This only needs to be done once, then all following Solve or Hint commands will maintain Impossible markings as they go.

If any manual changes are made, then either mark all Impossibles manually, or invoke the Mark Conflicts as Impossible command again before using the Solve or Hint menus.

Next: Only 1 possible in cell