(Very) Hard AND nice puzzles

The following list contains portal puzzles that have been rated as nice or very nice and that are difficult. These puzzles are recommended for experts - and allow some time to solve.

	Description	solved	Rating
	Tag 13 - Nurikabe by CJK (on 28. January 2021, 16:18)	45	91 %
	Broken Clock Tessellation by juggler (on 26. December 2024, 09:46)	21	97 %
	Solver, there's a fly on my Sudoku! by IcyFruit (on 25. November 2023, 22:39)	102	96 %
	Zahlenbild-Rundweg by Calavera (on 22. June 2009, 16:07)	127	96 %
	Broken Slitherlink by ahaupt (on 21. May 2020, 11:02)	52	99 %
	Zippularity by FullDeck-Missing (on 3. August 2024, 06:04)	46	92 %
	Killer Sudoku #4 by Phistomefel (on 17. April 2020, 10:16)	135	94 %