You are in a high security prison.
Tonight was the perfect opportunity for a breakout...
You know where the holes on the walls are.
But there are problems...
1. It's pitch dark and you are not quite sure where you are.
2. The spot lights scan the walls quite regularly.
Use numeric keys : 8-up, 4-left, 6-right, 2-down.
Make sure Num Lock is ON.