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2016/12/20 New Images. (Sagano, ROAM illumination)
2016/11/28 New Images. (Kiyomizudera, Toji, Umekouji Park, Arashiyama, Bishamondo)
2016/10/18 Average time OPEN
2016/10/18 Difficult 50 OPEN
2016/09/13 Solving Techniques 19. Aligned Pair Exclusion OPEN
2016/09/13 Solving Techniques 18. WXYZ Wing OPEN
2016/02/25 Solving Techniques 17. Extended Unique Rect. OPEN
2016/02/25 Solving Techniques 16. Hidden Unique Rect's OPEN
2016/02/21 Solving Techniques 15. Jelly Fish OPEN
2016/02/21 Solving Techniques 14. Unique Rectangles OPEN
2016/02/19 Solving Techniques 13. BUG+1 OPEN
2016/02/19 Solving Techniques 12. XY-Chains OPEN
2016/02/16 Solving Techniques 11. X-Cycles OPEN
2016/01/31 Solving Techniques 10. XYZ-Wing OPEN
2016/01/30 Solving Techniques 9. Sword-Fish OPEN
2016/01/28 Solving Techniques 8. Simple Chain OPEN
2016/01/24 Solving Techniques 7. Simple Coloring OPEN
2016/01/24 menu
2016/01/16 Solving Techniques 6. Y-Wing OPEN
2016/01/16 Solving Techniques 5. X-Wing OPEN
2016/01/14 Solving Techniques 4. Pointing Pairs OPEN
2016/01/11 Solving Techniques 3. Hidden Pairs/Triples/Quads OPEN
2016/01/11 kyoto-ebisu (Jan.)
2016/01/06 Solving Techniques 2. Naked Pairs/Triples/Quads OPEN
2016/01/05 Solving Techniques 1. Hidden Singles OPEN
2015/12/20 About the moderator OPEN
2015/12/20 About Sudoku techniques OPEN
2015/12/20 Possible combinations of Sudoku OPEN
2015/12/20 About Sudoku OPEN
2015/12/20 Creating a Sudoku program 4 - Creating problems with fewer clues OPEN
2015/12/20 Creating a Sudoku program 3 - Sudoku solver program OPEN
2015/12/20 Creating a Sudoku program 2 - Creating blank boxes OPEN
2015/12/19 Sudoku problem solver program OPEN
2015/12/19 Creating a Sudoku program 1 - Creating the answer OPEN
2015/12/19 Creating a Sudoku program - Program maximum level OPEN
2015/12/16 Sudoku Tricks (How to Solve) OPEN
2015/12/16 Solving Basics (How to Solve) OPEN
2015/09/12 OPEN
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