Back in 1999, I posted this chess problem, but now I am adding a restriction:

Place 16 chess pieces (or 16 checkers) on an 8 x 8 chess board so that
no three are in a line (horizontally, vertically, or diagonally).
Here is the new stipulation:
The first two pieces must be placed on two of the four central squares of the board.



Click here for a printer copy of the chess board

Click here to see the original problem from 1999

Solution to the Problem:



Eliza Sheffield, Anna Tetzlaff and Joel Fredericks sent in a different solution:



And then Danilo Calcinaro sent in twenty-two solutions to the problem.
Click here to see Danilo's solutions



Correctly solved by:

1. Eliza Sheffield and Anna Tetzlaff and Sous Chef Joel Fredericks Epiphany Cafe in Tuscaloosa, Alabama
2. Danilo Calcinaro Istituto Tecnico Tecnologico (ITT) "Montani",
Fermo, Italy