Arnold Schönhage
Sudoku Studies
By the end of 2006,  I have written a program for solving 9x9 Sudokus,
and for analyzing their solvability. The underlying algorithmic ideas
are described in the (German) text
     
   SUDOC2 --- Grundlagen zum Sudoku-Programm.
  [dvi], [pdf]
More recent mathematical studies on 9x9 Sudokus are in the (German) article
     
   Einige Sudoku-Studien,  Dezember 2010,  25 Seiten,
  [dvi], [pdf]
     
mit zugehörigen Ergebnisdateien  TPFUV 
    und  TPFNUV 
Last modified: Thu Feb 10 04:58:14 CET 2011