After you've loaded the game up and you see the move list, click on the move before the variation starts, and play out the variation by moving the pieces on the board.
The SET BEGIN button has the game start at the move you are interested in, but allows players to look at previous moves in the game. To use the SET BEGIN button click a move and then click that button.
how do i put variations i had in mind on the same board as the game i am posting? please i need someone kind enough to help me with a step by step procedure because i still cant get it right with the SET BEGIN and SET END buttons..