Logic Masters Deutschland e.V.

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 (451) - Russian Doll Sums
by Richard (on 21. November 2025, 06:00)
753
98 %
unsolvedSudoku Variants Series (450) - Unique killer cages
by Richard (on 14. November 2025, 06:00)
1372
94 %
unsolvedSudoku Variants Series (449) - Zipper Lines ++
by Richard (on 7. November 2025, 06:00)
734
88 %
unsolvedSudoku Variants Series (448) - Coordinate arrows
by Richard (on 31. October 2025, 06:00)
1472
98 %
unsolvedSudoku Variants Series (447) - Remote German Whisper Dots
by Richard (on 24. October 2025, 06:00)
813
91 %
unsolvedSudoku Variants Series (446) - Mountain Sudoku
by Richard (on 17. October 2025, 06:00)
1083
94 %
unsolvedSudoku Variants Series (445) - Cage relations (a.k.a. XY-cages)
by Richard (on 10. October 2025, 06:00)
663
98 %
unsolvedSudoku Variants Series (444) - Easy as 369
by Richard (on 3. October 2025, 06:00)
1702
94 %
unsolvedSudoku Variants Series (443) - Diagonal consecutives
by Richard (on 26. September 2025, 06:00)
892
93 %
unsolvedSudoku Variants Series (442) - Modular Lines
by Richard (on 19. September 2025, 06:00)
753
94 %
unsolvedSudoku Variants Series (441) - Hot Potato
by Richard (on 12. September 2025, 06:00)
1093
96 %
unsolvedSudoku Variants Series (440) - Krꝏpki Dꝏts
by Richard (on 5. September 2025, 06:00)
813
94 %
unsolvedSudoku Variants Series (439) - Top Heavy Parity
by Richard (on 29. August 2025, 06:00)
1132
93 %
unsolvedSudoku Variants Series (438) - Regular Dots
by Richard (on 22. August 2025, 06:00)
1002
92 %
unsolvedSudoku Variants Series (437) - X-Sums or X-Products
by Richard (on 15. August 2025, 06:00)
853
94 %
unsolvedSudoku Variants Series (436) - X-Products
by Richard (on 8. August 2025, 08:00)
822
93 %
unsolvedSVS #435 Leftover: Slow Thermos
by Richard (on 1. August 2025, 08:00)
603
88 %
unsolvedSudoku Variants Series (435) - Slow Thermos
by Richard (on 1. August 2025, 04:29)
1102
95 %
unsolvedSudoku Variants Series (434) - Diagonal Sandwich
by Richard (on 25. July 2025, 08:00)
942
95 %
unsolvedSudoku Variants Series (433) - Zifference Lines
by Richard (on 18. July 2025, 08:00)
932
94 %
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