(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 | |
|---|---|---|---|
 | Know Your Rank by Kaktuslav (on 18. October 2025, 08:00) | 36 |  90 % |
| Cobra's Curse by IcyFruit (on 1. February 2024, 14:37) | 90 | 97 % |
| EnTropic Islands by Paletron (on 1. October 2023, 11:27) | 157 | 98 % |
| Bullet Train by wooferzfg (on 11. April 2023, 05:29) | 50 | 100 % |
| Kropki Arrow Sandwich (Merry Christmas PhilTheHat!) by RockyRoer (on 22. January 2025, 15:01) | 48 | 94 % |
| Square Dance by cristophermoore (on 16. February 2023, 19:24) | 68 | 94 % |
| Ouroboroi (Quadruples Sudoku) by clover (on 5. December 2023, 08:05) | 87 | 94 % |
| DEF Hochhaus anders rum by Luigi (on 13. July 2011, 08:47) | 23 | 93 % |
| Rätselmix kryptisch by AI1463 (on 9. July 2015, 00:00) | 33 | 99 % |
| KUCHEN - buntes Buchstabenrätsel / colorful letter puzzle by DocLogic (on 6. January 2020, 11:29) | 36 | 94 % |
| Find the Triplet by Mesmer (on 24. February 2020, 23:14) | 35 | 92 % |
| Killer Sandwich by Alexander Rappa (on 31. October 2020, 19:16) | 46 | 99 % |
| Average Arrows (mit Thermometern) by glum_hippo (on 18. January 2021, 22:17) | 23 | 96 % |
| Hopscotch by Ish_but_the_1st_time (on 28. February 2021, 20:36) | 17 | 90 % |
| 9 Arrows and 2 Givens (Arrow Sudoku) by Cane_Puzzles (on 9. July 2021, 19:30) | 12 | 93 % |
| Renban Rocket by the_cogito (on 3. January 2022, 18:20) | 52 | 96 % |
| Ye Olde Inn by Qodec (on 11. June 2022, 23:32) | 59 | 95 % |
| Zero Ate Five by XeonRisq (on 13. July 2022, 04:00) | 24 | 93 % |
| Ruined Arch by Jay Dyer (on 24. July 2022, 19:30) | 27 | 98 % |
| The Last Hurrah? by Playmaker6174 (on 2. August 2022, 07:17) | 53 | 99 % |
