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!

	Description	solved	Rating
	Sudoku Variants Series (240) - Second Even Product Sudoku by Richard (on 25. September 2018, 00:00)	117	94 %
	Sudoku Variants Series (239) - Odd Tapa Sudoku by Richard (on 11. September 2018, 00:00)	160	91 %
	Sudoku Variants Series (238) - Calcudoku by Richard (on 28. August 2018, 00:00)	116	90 %
	Sudoku Variants Series (237) - Before 1 - After 9 Sudoku by Richard (on 14. August 2018, 00:00)	107	90 %
	Sudoku Variants Series (236) - Sum of Them Sudoku by Richard (on 31. July 2018, 00:00)	88	91 %
	Sudoku Variants Series (235) - Outside Parity Sudoku by Richard (on 17. July 2018, 00:00)	119	84 %
	Sudoku Variants Series (234) - Four in a grow Sudoku by Richard (on 3. July 2018, 00:00)	110	84 %
	Sudoku Variants Series (233) - TeeTotal Sudoku by Richard (on 19. June 2018, 00:00)	113	91 %
	Sudoku Variants Series (232) - Sudoku Plusminus by Richard (on 5. June 2018, 00:00)	116	90 %
	Sudoku Variants Series (231) - Odd/Even Bridge Sudoku by Richard (on 22. May 2018, 00:00)	122	92 %
	Sudoku Variants Series (230) - Odd/Even Count Sudoku by Richard (on 8. May 2018, 00:00)	109	93 %
	Sudoku Variants Series (229) - Double Kropki Sudoku by Richard (on 24. April 2018, 00:00)	123	94 %
	Sudoku Variants Series (228) - Hit the target Sudoku by Richard (on 10. April 2018, 00:00)	116	81 %
	Sudoku Variants Series (227) - One Knight Step Sudoku by Richard (on 3. April 2018, 00:00)	127	88 %
	Sudoku Variants Series (226) - Double Scattered Sudoku by Richard (on 27. March 2018, 00:00)	114	87 %
	Sudoku Variants Series (225) - Greater than X Sudoku by Richard (on 20. March 2018, 00:00)	99	82 %
	Sudoku Variants Series (224) - Sum or Product Frame Sudoku by Richard (on 13. March 2018, 00:00)	101	92 %
	Sudoku Variants Series (223) - Sundoku by Richard (on 6. March 2018, 00:00)	128	89 %
	Sudoku Variants Series (222) - Traffic Lights Sudoku by Richard (on 27. February 2018, 00:00)	110	88 %
	Sudoku Variants Series (221) - Nine Pins Sudoku by Richard (on 20. February 2018, 00:00)	128	87 %