The object is to get 5 in a row on a 5x5-board or to force your opponent out of moves..
Drop Phase
On each turn, player drops one of his stones on an empty cell.
Each player has 5 discs and when all discs are on the board, the phase is over
Move Phase
If it's possible to jump over an opponent disc, you must and that disc is flipped. Multiple jumps are allowed (by that first disc).
There ara two options: jumps is mandatory and not mandatory
Move a friendly stone to an (orthogonal or diagonal) adjacent empty cell.