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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
newSudoku Variants Series (492) - Dutch Whisper Dots
by Richard (today, 06:00)
62
N/A
unsolvedSudoku Variants Series (491) - Toroidal diagonals
by Richard (on 30. October 2026, 06:00)
673
90 %
unsolvedSudoku Variants Series (490) - Eleven lines
by Richard (on 23. October 2026, 06:00)
1093
95 %
unsolvedSudoku Variants Series (489) - Fibonacci lines
by Richard (on 16. October 2026, 06:00)
344
94 %
unsolvedSudoku Variants Series (488) - Hitpoint Arrows
by Richard (on 9. October 2026, 06:00)
1022
96 %
unsolvedSudoku Variants Series (487) - In the Shadows
by Richard (on 2. October 2026, 06:00)
1082
97 %
unsolvedDutch Flat Mates: Next to N
by Richard (on 30. September 2026, 07:00)
762
96 %
unsolvedSudoku Variants Series (486) - Hitpoints
by Richard (on 25. September 2026, 06:00)
703
99 %
unsolvedSudoku Variants Series (485) - Encaged 4
by Richard (on 18. September 2026, 06:00)
1192
94 %
unsolvedSudoku Variants Series (484) - Next to N
by Richard (on 11. September 2026, 06:00)
663
94 %
unsolvedSudoku Variants Series (483) - Coral
by Richard (on 4. September 2026, 06:00)
972
96 %
unsolvedSudoku Variants Series (482) - Overlapping Matryoshka
by Richard (on 28. August 2026, 06:00)
304
85 %
unsolvedSudoku Variants Series (481) - Counting Circles
by Richard (on 21. August 2026, 06:00)
1202
93 %
unsolvedSudoku Variants Series (480) - Dutch Whisper Sums
by Richard (on 14. August 2026, 06:00)
663
98 %
unsolvedSudoku Variants Series (479) - Parity lines
by Richard (on 7. August 2026, 06:00)
1261
87 %
unsolvedSudoku Variants Series (478) - Wall
by Richard (on 31. July 2026, 06:00)
903
98 %
unsolvedSudoku Variants Series (477) - Product-sum-lines
by Richard (on 24. July 2026, 06:00)
683
96 %
unsolvedSudoku Variants Series (476) - Golden cells
by Richard (on 17. July 2026, 06:00)
1332
89 %
unsolvedSudoku Variants Series (475) - N-Sums - skyscrapers
by Richard (on 10. July 2026, 06:00)
853
98 %
unsolvedSudoku Variants Series (474) - First seen odd/even
by Richard (on 3. July 2026, 06:00)
1033
95 %
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