on board

back to the drawing board

Indicates that one must try a different strategy in order to achieve some goal following the failure of a recent attempt.

go back to the drawing board

To start again; to scrap a previous idea or plan and try again from the beginning.

go by the board

To fall or to go overboard; to be cast over the side of a ship.

ironing board

A flat-chested woman.

sweep the board

To win all the prizes in a competition.