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chess.y (col) or not is valid index(to row, to col): olor (plece) "white" and to row sa from row: mor(niece) se "black" and to row from row: given prece tocol froncot and boardtorowto. return True elif torow as fromrow tocol froncol and boardtorowtocolj – e 1: return True e115 to ron fronrow 1 and abs(tocol – fromcol) and 1sopposttecolor(boardfromrow)(tocolJ, plece): If to row – 7: return True returner rue return False plece. Lower () OLD TO COL in range(to col 1, from col): sardfromrowcot return False for row in range(from row 1,. if boardrowfroncol