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Richard

Richard is one of the most productive authors in the puzzle portal. His specialty are Sudoku variants and ABCtjes, but he also likes using Pentominoes in his puzzles. Richards puzzles are very popular: almost all of his puzzles are rated above 80%, and they cover the whole difficulty range. Enjoy Richard's puzzle creations!

DescriptionsolvedRating
unsolvedSudoku Variants Series (415) - Parity Poopers
by Richard (on 14. March 2025, 12:00)
714
96 %
unsolvedSudoku Variants Series (414) - Derivative Arrows
by Richard (on 7. March 2025, 12:00)
723
96 %
unsolvedSudoku Variants Series (413) - Cloned Inequality
by Richard (on 28. February 2025, 12:00)
733
92 %
unsolvedSudoku Variants Series (412) - Dutch Flat Mates
by Richard (on 21. February 2025, 12:00)
1452
90 %
unsolvedSudoku Variants Series (411) - Position Sandwich
by Richard (on 14. February 2025, 12:00)
882
96 %
unsolvedHappy birthday Lizzy!
by Richard (on 12. February 2025, 00:00)
1012
93 %
unsolvedSudoku Variants Series (410) - Tens Digits
by Richard (on 7. February 2025, 12:00)
1052
93 %
unsolvedSudoku Variants Series (409) - Bouncing X-Sums
by Richard (on 31. January 2025, 12:00)
1013
92 %
unsolvedSudoku Variants Series (408) - Greater grey consecutives
by Richard (on 24. January 2025, 12:00)
942
94 %
unsolvedSudoku Variants Series (407) - Citywalk
by Richard (on 17. January 2025, 12:00)
1961
92 %
unsolvedSudoku Variants Series (406) - Cold Arrows
by Richard (on 10. January 2025, 12:00)
1014
93 %
unsolvedSudoku Variants Series (405) - Weiqi
by Richard (on 3. January 2025, 12:00)
1071
91 %
unsolvedSudoku Variants Series (404) - Factor Lines
by Richard (on 27. December 2024, 10:00)
713
91 %
unsolvedSudoku - Position Sums (Leftover DSC2024)
by Richard (on 25. December 2024, 08:00)
782
95 %
unsolvedSudoku Variants Series (403) - Downhill
by Richard (on 20. December 2024, 12:00)
1073
94 %
unsolvedPositional X-Sums (a.k.a. Teleportation Sums)
by Richard (on 13. December 2024, 12:00)
872
91 %
unsolvedSudoku Variants Series (402) - Search 8 or 9
by Richard (on 6. December 2024, 12:00)
1073
93 %
unsolvedSudoku Variants Series (401) - Ten Lines
by Richard (on 29. November 2024, 12:00)
1073
96 %
unsolvedSudoku Variants Series (400) - Upper right heavy killer
by Richard (on 22. November 2024, 00:00)
1113
95 %
unsolvedSudoku Variants Series (399) - Odd-Even Box Multiplication
by Richard (on 15. November 2024, 12:00)
902
90 %
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