Disruptive graphics no longer an issue
Update: The black triangles are gone! Much more enjoyable now.
This is very unsettling as there are black triangles flashing on the screen and at times they cover or mask the pegs and rope colors. This is not at all relaxing. I deleted it after trying 20 puzzles.Developer Response
Thank you for your feedback, please let me know if you experience anything similar with the current version.