- The Breakthrough applet is 'clickable'. To move a piece, click it first. Next click the square you want to move it. Explosions follow automatically.
- To clear, click on the 'go to end' button bottom-right [>>>|]. Now you can start over.
- With the command menu you can undo your last move, end a game by accepting a loss, or negotiate a draw.
The extended 'undo' function allows you to take back any number of moves, provided the opponent cooperates by taking back his.
If you find yourself in a lost position, please choose 'Resign' from the command menu to acknowledge and officially end the game. - To move, enter your password and click "Submit move".
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