Both players take turns placing their four pieces on the board. The pieces move one space att the time. Enemy pieces are captured by jumping. Capturing is mandatory. Multiple capture jumps must be made if possible. The goal is to capture all enemy pieces or have your last piece on the space of your color.
 
 
This game is the only turn based 1D strategy I have ever seen. I think it is not possible to make the board and rules simplier and still have a working strategy game. The game is suprisingly challenging and the computer opponent is hard to beat.
Motala Ström is the river that flows through my beloved Norrköping, Sweden.