How many playing squares are on a standard chessboard?

Party whips can be found at No. 12 on which street, named for a 17th-century Treasury secretary? Which city, sharing its name with a grape used in grape jelly, is the capital of New Hampshire? Peggy Cass played Agnes Gooch opposite Rosalind Russell in which title role? "Physical" by which singer was No. 1 on the charts longer than any other song of the 1980s? Polynomials and coefficients are used in which branch of math? Pop singer Yvonne Elliman played Mary Magdalene in which 1973 musical film? The Greek sea god Poseidon corresponds to which Roman god? President Clinton's torn tendon in 1997 was an injury to which joint?