def _parse_sgf_move(node_value):
	if node_value == '' or node_value == 'tt':
		return go.PASS_MOVE
	else:
		row = string.letters.index(node_value[1])
		col = string.letters.index(node_value[0])
		# GameState expects (x, y) where x is column and y is row
		return (col, row)
Given a well-formed move string, return either PASS_MOVE or the (x, y) position
dataset/ETHPy150Open Rochester-NRT/RocAlphaGo/AlphaGo/util.py/_parse_sgf_move