push(slidings) WIN 4, & push(slidings) LOSS 4 on triangle board:
 
The player placing four own balls in a row will win.
You can place your ball only on the edges of the board and the ball so placed should be immediately rolled one position onto the board to push the existing balls before itself.
So, you will have to click twice to make a move: one click to put your ball down and another to push it in.
 
Note: You can win in an action only. You will also win if your winning move forms your opponent's four at the same time. (This latter will count only if you don't have a four yourself.)
 
Also check out the orthogonal version Push 4.