Game classified as connection and Sim

SIM

It is a simple 2 person game.Players take turns in making a line to connect the 6 dots on a given diagram which is a regular hexagon with its points making triangles   

The players select their colours and join any 2 dots with their own coloured line to ensure that he has 

Not made any triangle with his colours. The triangles refer to the ones with the players own three dots . Whoever makes this triangle first is the loser

Please make copies of the diagram before you start  so that you can play more games