spelletje 

A challenge I came across when reading about 2020 Fields Medal winners in NYT

https://www.nytimes.com/live/2022/07/05/science/fields-medal-math

place two white knights on the fields with empty square and two black knights at the fields marked with a squiral

now try with only knights-moves to empty fields to swap white and black



I used Turtlestitch to generate SVG for lasercutter to engrave a piece of wood