Hirofumi Fujiwara's Sudoku

Hirofumi Fujiwara's Sudoku
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Details of Hirofumi Fujiwara's Sudoku

About Hirofumi Fujiwara's Sudoku
Hirofumi Fujiwara's Sudoku- Offers a tutorial for creating puzzles, a Java-based solver, and links to other resources. [English/Japanese]
Riddles