This is actually similar question to Biggest army on a chessboard. But it is kinda different way of asking.
In this game, you are supposed to put the least amount of pieces into the board where there will be no left square you can put any pieces. If this question was asked for
Queen only, the answer will be $5$ as defined in Wolfram.
Rooks only the answer will be $8$.
Kings only $9$.
Bishops only $8$.
Knights only $12$.
So what if we use Queen, Rooks, Knights, Bishops altogether,
What is the least point you can get with the adjusted penalty points below where there will be no square left on the board you can put any kind of opposite piece? (Notice that no King exists because it makes the question quite easy):
- Queens: 24, Rooks: 15, Knights: 10, Bishops: 15.
These penalties are based off of the other similar question.