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
unsolvedEasy Peasy Sudoku Advent (06) - Cold Arrows
by Richard (on 6. December 2025, 06:00)
1801
94 %
unsolvedEasy Peasy Sudoku Advent (05) - Confetti Sums
by Richard (on 5. December 2025, 06:00)
1891
94 %
unsolvedEasy Peasy Sudoku Advent (04) - Sum or Product Frame
by Richard (on 4. December 2025, 06:00)
1592
91 %
unsolvedEasy Peasy Sudoku Advent (03) - Killer Kropki
by Richard (on 3. December 2025, 06:00)
1852
94 %
unsolvedEasy Peasy Sudoku Advent (02) - Odd-Even Thermometers
by Richard (on 2. December 2025, 06:00)
2462
93 %
unsolvedEasy Peasy Sudoku Advent (01) - Position Sums
by Richard (on 1. December 2025, 06:00)
2032
96 %
unsolvedSudoku Variants Series (452) - Sum Skyscrapers
by Richard (on 28. November 2025, 06:00)
823
96 %
unsolvedSudoku Variants Series (451) - Russian Doll Sums
by Richard (on 21. November 2025, 06:00)
843
97 %
unsolvedSudoku Variants Series (450) - Unique killer cages
by Richard (on 14. November 2025, 06:00)
1482
94 %
unsolvedSudoku Variants Series (449) - Zipper Lines ++
by Richard (on 7. November 2025, 06:00)
774
88 %
unsolvedSudoku Variants Series (448) - Coordinate arrows
by Richard (on 31. October 2025, 06:00)
1652
98 %
unsolvedSudoku Variants Series (447) - Remote German Whisper Dots
by Richard (on 24. October 2025, 06:00)
913
92 %
unsolvedSudoku Variants Series (446) - Mountain Sudoku
by Richard (on 17. October 2025, 06:00)
1153
94 %
unsolvedSudoku Variants Series (445) - Cage relations (a.k.a. XY-cages)
by Richard (on 10. October 2025, 06:00)
733
98 %
unsolvedSudoku Variants Series (444) - Easy as 369
by Richard (on 3. October 2025, 06:00)
1792
94 %
unsolvedSudoku Variants Series (443) - Diagonal consecutives
by Richard (on 26. September 2025, 06:00)
952
93 %
unsolvedSudoku Variants Series (442) - Modular Lines
by Richard (on 19. September 2025, 06:00)
803
95 %
unsolvedSudoku Variants Series (441) - Hot Potato
by Richard (on 12. September 2025, 06:00)
1153
96 %
unsolvedSudoku Variants Series (440) - Krꝏpki Dꝏts
by Richard (on 5. September 2025, 06:00)
863
94 %
unsolvedSudoku Variants Series (439) - Top Heavy Parity
by Richard (on 29. August 2025, 06:00)
1222
93 %
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