Gray Kanerek is known as GRKLES by the CTC community. He is a rocket scientist, with his own Patreon. His first feature on CTC is REDRUM which is a Little Killer and Palindrome variant. His showcase video provides an insight into how he sets puzzles and can be viewed by clicking the play button in the centre of the video above.
Selecting a sudoku title will allow you to play it, selecting Simon or Mark image next to the title will allow you to watch it.
