The rules are simple: You (the white horses) has to catch SAMs black horses. Only knight moves (as in chess, so it is a good exercise) are allowed. Illegal moves will be reported.
The SAM decides who starts the game. The SAM also decides whichhorse he (or you) has to move (but without cheating). So your tactic is to set your move care-fully and also to fight against accident.
You catch your opponents horse by jumping on his field when possible. The first player who has 5 points is the winner.