#238 Knight shift
Set by Sam Hartburn
“I’ve heard that whatever square I start from, and no matter what path I take, I can always make at least 10 moves without landing on a square I’ve already been on,” said the white knight.
The black knight tested it out. After jumping onto a particular black square somewhere in the top left-hand quarter of the chess board, she made three hops, but there were now no squares she could move to that she hadn’t already visited. “That wasn’t 10!” she said.
“Maybe you were unlucky,” said the white knight. The black knight set off from where she …