Sudoku Multiple Solutions
September Sudoku How know they have just filled enough seats to form a single solution?
If they do not quite square there will be multiple solutions, if many or there will be no solution at all (in case of conflict) or make the problem easier than necessary. Are there rules describe the minimum number of black squares to define a sudoku (if 3×3, 4×4 or more)?
Well, I think do a sudoku as hard as you do one. I start with a solution, all the seats filled, and carefully work backwards to find all possible clues. There should be a systematic approach and computer program that creates Soduko. I will try to schedule one when I was in programming, but found too large a project. Finding enough of your interesting question and maybe this site can help answer your question. My focus is obviously not as they do here. I have not read http://www.sudokuonline.us/make_your_own_sudoku_puzzle.php everything.
http://www.sudokuhelp101.com What about multiple solutions for sudoku puzzles
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