ELI5: Explain Like I'm 5

Eight queens puzzle

The 8 queens puzzle is a math puzzle where you have to put 8 queens on a chessboard so that no two queens can attack each other. You have to be careful to place the queens in a way so that no two queens are on the same row, column or diagonal line. It can be a tricky puzzle because there are many possible solutions, but only one of them is the correct answer.