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
newSudoku Variants Series (467) - Second start skyscrapers
by Richard (on 15. May 2026, 06:00)
772
98 %
unsolvedSudoku Variants Series (466) - Parity swap arrows
by Richard (on 8. May 2026, 06:00)
1682
97 %
unsolvedSudoku Variants Series (465) - Productive Killers
by Richard (on 1. May 2026, 06:00)
414
93 %
unsolvedSudoku Variants Series (464) - Greater than Killer
by Richard (on 24. April 2026, 06:00)
1172
97 %
unsolvedSudoku Variants Series (463) - Borderland
by Richard (on 17. April 2026, 06:00)
673
99 %
unsolvedSudoku Variants Series (462) - Hitlines
by Richard (on 10. April 2026, 06:00)
593
93 %
unsolvedSudoku Variants Series (461) - Dutch Arrows
by Richard (on 3. April 2026, 06:00)
1232
96 %
unsolvedEasy Peasy Sudoku Leftover (13) - Position Sums
by Richard (on 1. April 2026, 06:00)
583
94 %
unsolvedEasy Peasy Sudoku Leftover (12) - Cage Relations
by Richard (on 27. March 2026, 06:00)
702
98 %
unsolvedEasy Peasy Sudoku Leftover (11) - Killer Skyscrapers
by Richard (on 25. March 2026, 06:00)
693
91 %
unsolvedEasy Peasy Sudoku Leftover (10) - Little Palindromes
by Richard (on 20. March 2026, 06:00)
922
95 %
unsolvedEasy Peasy Sudoku Leftover (09) - Killer Kropki
by Richard (on 18. March 2026, 06:30)
852
95 %
unsolvedEasy Peasy Sudoku Leftover (08) - Sum or Product Frame
by Richard (on 13. March 2026, 06:00)
872
94 %
unsolvedEasy Peasy Sudoku Leftover (07) - Zipper Lines ++
by Richard (on 11. March 2026, 06:00)
762
93 %
unsolvedEasy Peasy Sudoku Leftover (06) - Confetti Sums
by Richard (on 6. March 2026, 06:00)
723
93 %
unsolvedDutch Quali 26 appetizer - Sudoku Sandwiched N-Sums
by Richard (on 4. March 2026, 06:00)
672
95 %
unsolvedEasy Peasy Sudoku Leftover (05) - Thermometers - Removed bulbs
by Richard (on 4. March 2026, 06:00)
662
94 %
unsolvedEasy Peasy Sudoku Leftover (04) - Cage Relations
by Richard (on 27. February 2026, 06:00)
572
94 %
unsolvedDutch Quali 26 appetizer - Sudoku Position Sums
by Richard (on 25. February 2026, 06:02)
582
94 %
unsolvedEasy Peasy Sudoku Leftover (03) - Killer Skyscrapers
by Richard (on 25. February 2026, 06:00)
873
96 %
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