Crazy DM-ing #1 - The Chessboard

I painted an 8x8 world map for my Osme campaigne, so I can use a chessboard.

Movement Rules:
•the party can only travel in one of the four cardinal directions — no diagonals.
•to travel one square, half a day or a whole night is needed.
 

Chessboard as a battle map:
I also use the chessboard and lego minis for grid combat. It seems too small at first, but with only three squares of movement for example it works great.
You can fit a small dungeon in a 8x8 grid, try it!