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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 (413) - Cloned Inequality
by Richard (on 28. February 2025, 12:00)
283
91 %
unsolvedSudoku Variants Series (412) - Dutch Flat Mates
by Richard (on 21. February 2025, 12:00)
862
91 %
unsolvedSudoku Variants Series (411) - Position Sandwich
by Richard (on 14. February 2025, 12:00)
572
95 %
unsolvedHappy birthday Lizzy!
by Richard (on 12. February 2025, 00:00)
702
95 %
unsolvedSudoku Variants Series (410) - Tens Digits
by Richard (on 7. February 2025, 12:00)
792
92 %
unsolvedSudoku Variants Series (409) - Bouncing X-Sums
by Richard (on 31. January 2025, 12:00)
772
93 %
unsolvedSudoku Variants Series (408) - Greater grey consecutives
by Richard (on 24. January 2025, 12:00)
702
94 %
unsolvedSudoku Variants Series (407) - Citywalk
by Richard (on 17. January 2025, 12:00)
1651
92 %
unsolvedSudoku Variants Series (406) - Cold Arrows
by Richard (on 10. January 2025, 12:00)
784
94 %
unsolvedSudoku Variants Series (405) - Weiqi
by Richard (on 3. January 2025, 12:00)
731
91 %
unsolvedSudoku Variants Series (404) - Factor Lines
by Richard (on 27. December 2024, 10:00)
533
92 %
unsolvedSudoku - Position Sums (Leftover DSC2024)
by Richard (on 25. December 2024, 08:00)
612
95 %
unsolvedSudoku Variants Series (403) - Downhill
by Richard (on 20. December 2024, 12:00)
863
92 %
unsolvedPositional X-Sums (a.k.a. Teleportation Sums)
by Richard (on 13. December 2024, 12:00)
762
91 %
unsolvedSudoku Variants Series (402) - Search 8 or 9
by Richard (on 6. December 2024, 12:00)
893
92 %
unsolvedSudoku Variants Series (401) - Ten Lines
by Richard (on 29. November 2024, 12:00)
863
95 %
unsolvedSudoku Variants Series (400) - Upper right heavy killer
by Richard (on 22. November 2024, 00:00)
983
95 %
unsolvedSudoku Variants Series (399) - Odd-Even Box Multiplication
by Richard (on 15. November 2024, 12:00)
712
89 %
unsolvedDutch Quali 24 appetizer: Sudoku - Round Off
by Richard (on 29. February 2024, 20:00)
722
90 %
unsolvedDutch Quali 24 appetizer: Pentapa
by Richard (on 29. February 2024, 20:00)
652
96 %
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