Sudoku: Difference between revisions
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<br>The REXX code was written to give hints and also show the possibilities (of what is possible solution for any cell),
<br>and to partially solve the puzzle using distinct strategies (separately or in combination).
<br>
<br>the '''$ERR''' program which issues errors, and '''$H''' which shows '''help''' and other documentation.
<lang rexx>/**/trace o;parse arg !;if !all(arg()) then exit;if !cms then address '';signal on halt;signal on novalue;signal on syntax
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