A turbo decoder system for decoding turbo coded bits, is provided with a system input and a plurality of turbo decoders each having a turbo decoder input. The optically inactive part includes a first surface, an opposite second surface, and a side surface connected between the first surface and the second surface. The three pins are arranged parallel to one another. A gate voltage sufficient to reverse bias the junction between the shallow N+ regions and the drift layer forms a potential barrier which blocks current flow through the diode and BJT structures and eliminates the base drive current such that the BJT and said switch are turned off. The game in one preferred general embodiment allows the player to select the displayed value to mask and thus remove from the offer and the masked value to reveal and add to the offer. A deriving unit derives a tentative return value A and a tentative return value B.