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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 (440) - Krꝏpki Dꝏts
by Richard (on 5. September 2025, 06:00)
703
94 %
unsolvedSudoku Variants Series (439) - Top Heavy Parity
by Richard (on 29. August 2025, 06:00)
1012
93 %
unsolvedSudoku Variants Series (438) - Regular Dots
by Richard (on 22. August 2025, 06:00)
892
92 %
unsolvedSudoku Variants Series (437) - X-Sums or X-Products
by Richard (on 15. August 2025, 06:00)
753
95 %
unsolvedSudoku Variants Series (436) - X-Products
by Richard (on 8. August 2025, 08:00)
712
93 %
unsolvedSVS #435 Leftover: Slow Thermos
by Richard (on 1. August 2025, 08:00)
493
88 %
unsolvedSudoku Variants Series (435) - Slow Thermos
by Richard (on 1. August 2025, 04:29)
982
95 %
unsolvedSudoku Variants Series (434) - Diagonal Sandwich
by Richard (on 25. July 2025, 08:00)
812
95 %
unsolvedSudoku Variants Series (433) - Zifference Lines
by Richard (on 18. July 2025, 08:00)
872
94 %
unsolvedSudoku Variants Series (432) - Pointing Arrows
by Richard (on 11. July 2025, 08:00)
1492
96 %
unsolvedSudoku Variants Series (431) - Split Pea Lines
by Richard (on 4. July 2025, 08:00)
673
95 %
unsolvedSudoku Variants Series (430) - Sandwiched N-Sums
by Richard (on 27. June 2025, 08:00)
972
94 %
unsolvedSudoku Variants Series (429) - German Whisper Dots
by Richard (on 20. June 2025, 08:00)
1852
96 %
unsolvedSudoku Variants Series (428) - Eight Lines
by Richard (on 13. June 2025, 08:00)
713
95 %
unsolvedSudoku Variants Series (427) - Nonodoku
by Richard (on 6. June 2025, 08:00)
863
96 %
unsolvedSudoku Variants Series (426) - Zipper Lines
by Richard (on 30. May 2025, 08:00)
933
93 %
unsolvedSudoku Variants Series (425) - Up to N
by Richard (on 23. May 2025, 12:00)
652
92 %
unsolvedSudoku Variants Series (424) - Oil and Water
by Richard (on 16. May 2025, 12:00)
1502
95 %
unsolvedSudoku Variants Series (423) - Nine Rooms
by Richard (on 9. May 2025, 12:00)
693
95 %
unsolvedSudoku Variants Series (422) - Irregular Dots
by Richard (on 2. May 2025, 12:00)
1121
88 %
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