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标题：Enumerating 3D-Sudoku Solutions over Cubic Prefractal Objects
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作者：Hideki Tsuiki ; Yohei Yokota
期刊名称：Information and Media Technologies
电子版ISSN：1881-0896
出版年度：2012
卷号：7
期号：3
页码：973-977
DOI：10.11185/imt.7.973
出版社：Information and Media Technologies Editorial Board
摘要：We consider three-dimensional extensions of the Sudoku puzzle over prefractal objects. The prefractal objects we use are 2nd-level cubic approximations of two 3D fractals. Both objects are composed of 81 cubic pieces and they have 9 × 9-grid appearances in three orthogonal directions. On each object, our problem is to assign a digit to each of the 81 pieces so that it has a Sudoku solution pattern in each of the three 9 × 9-grid appearances. In this paper, we present an algorithm for enumerating such assignments and show the results.
关键词：enumeration;3D-Sudoku;fractal