public Pos SearchMaxPos( Stone color) {
		Pos retPos = null;
		Pos workPos = new Pos();

		int maxCnt = 0;
		for (int y = Common.Y_MIN_LEN; y < Common.Y_MAX_LEN; y++) {
			workPos.setY(y);
			for (int x = Common.X_MIN_LEN; x < Common.X_MAX_LEN; x++) {
				workPos.setX(x);
				int getCnt = this.DoSet(workPos, color, false);
				if (getCnt >maxCnt) {
					maxCnt = getCnt;
					retPos = new Pos(x, y);
				}
			}
		}

		return retPos;
	}