one word [pawn]
(ref: here ) The queen slowly made her way to the center of the field. Her king had effectively made her a scout for the rest of the army. Perhaps it was that she moved more fluidly than the rest. Or perhaps it was because she walked the grounds with more ammunition than any bishop or rook. Arriving at the designated spot, she noted the field had a distinctive slope. "Why, it does seem downhill from my perspective here," thought the queen. "It would seem easier to defend; it also means I cannot see over the ridge to the south." Looking for some form of cover, the queen found a nearby tree with an exceptionally wide base. "Perhaps if I climb here, then possibly here, I can acquire an excellent perspective." A slow rumble, in the distance and down the hill, seemed to distract from her climbing. "What is that," the queen asked herself while finding her perch. First one head appeared from the bottom of the hill. As the chin, ...