Object: Be the first player to get 4 of your pieces in a row, horizontally, vertically, or diagonally.
 
Moves are made by dropping pieces to the next unoccupied space from ANY side.
On this board, checkers can be 'dropped' against all edges, not just from the bottom.
 
 
History:
based on Vertical TicTacToe v1.2, Copyright 1998-2000 Zillions Development.
Played in a similar manner to the game widely known as Stack-4 or Connect-4.
This format has been described in the Zillions Discussion Board forum by Kevin Petrychyn