Related to Open Problem #1: In the Corner
Logic
Level
2
On a chessboard of a finite size, we want to place kings and knights such that each king attacks exactly 2 kings and 2 knights and each knight attacks exactly 2 kings and 2 knights.
What can we say about the square adjacent to a corner (horizontally or vertically, not diagonally)?
The possible attacks of a knight are shown on the left, and the possible attacks of a king are shown on the right.
by
Stefan van der Waal