Triplets - three in a line

TRIPLETS

*Two player
* Objective : to get 3 coins in a straight line.

RULES :
*Any player can start the game.
*Each player gets three coins.
*Each players alternatively.
*The board has 9 positions, each connected to others positions in some manner.
*Coins can be placed anywhere on the board if that position not occupied.
*Once a coin is placed on the board, it can only be moved to a valid position.
* Coins can be moved along the lines joining the positions.
* Only one step is taken per move.
*The player that can successfully gets all 3 coin in a straight line first wins.