Dying Light - Checkers Easter Egg (Blueprint: SiCK Bomb)

On the Tower's rooftop you'll find a checker board (pictured above), it's found on the opposite side of the rooftop as you enter from. There is a man standing nearby it along with some _______

 

Rinse and repeat this a few times until you return to find the Blueprint ontop of the board.

 

 

SiCK Bomb Blueprint