(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 | |
|---|---|---|---|
 | Sándor Tótka (Tokyo 2020) by Lisztes (on 11. August 2021, 01:00) | 17 |  90 % |
| Familiar combo by PetLov (on 14. August 2021, 20:32) | 16 | 91 % |
| Stuck In The Middle With You (Between Broken 159) by tallcat (on 15. January 2022, 00:11) | 52 | 98 % |
| Mutant Fillomino by au voleur! (on 19. February 2022, 18:03) | 26 | 95 % |
| Battle With The Archers 31: When Allies Collide by Playmaker6174 (on 29. April 2022, 22:59) | 70 | 98 % |
| CtC 500k Tribute by apiyo (on 30. August 2022, 05:56) | 14 | 91 % |
| Arrows Dilemma by Prof.Dori (on 14. August 2023, 16:02) | 55 | 94 % |
| Wichtel 2022 (3): Weihnachtsgeisterbahn by wichtel (on 13. September 2023, 10:10) | 15 | 100 % |
| Anti-Chess by EricRathbun (on 1. March 2024, 18:15) | 68 | 93 % |
| Pseudogenes by ViKingPrime (on 5. February 2024, 21:00) | 11 | 98 % |
| Δ Polygon Doppelganger by KenGlue (on 14. February 2024, 21:31) | 14 | 95 % |
| Plum by pieguy (on 27. February 2024, 17:45) | 13 | 91 % |
| Yin-Yang Renbanominos 2 by Die Hard (on 12. May 2024, 00:06) | 12 | 93 % |
| San Diego by SenatorGronk (on 21. August 2024, 02:49) | 27 | 94 % |
| Entangled Between (Entropic lines, Palindrome) by jcgodart (on 12. September 2024, 04:21) | 16 | 95 % |
| Snowmen in the Big City by Sedum (on 13. December 2024, 02:00) | 16 | 93 % |
| Interchangeable 2 by palpot (on 29. January 2025, 22:12) | 14 | 95 % |
| Difference Of Squares by MathGuy_12 (on 6. March 2025, 16:28) | 28 | 98 % |
| phresh out the dryer by aqjhs (on 23. April 2025, 09:51) | 30 | 94 % |
| Twofold arrows by NicoD (on 26. March 2025, 05:15) | 27 | 93 % |
