Descriptive notation abbreviated to the first letter of its name: K for king, Q for queen, R for rook, B for bishop, P for pawn. Knight begins with the same letter as king, so it is abbreviated to either "Kt" (used in older chess literature) or "N". "N" is used in this article. In 1944 "Chess Review" received many letters debating the change from Kt to N . In descriptive notation each square has two names, depending on Black's or White's viewpoint. Each is given a name corresponding with the piece that occupies the first at the start of the game. Thus
Piece by Piece (Kelly Clarkson album) to support the album, which would begin in Hershey, Pennsylvania on July 11, 2015. "Heartbeat Song", the lead single from "Piece by Piece", was released on January 12, 2015. Receiving a positive response in its initial release, music critics described the track as a celebration of Clarkson's return to mainstream pop music. "Heartbeat Song" became a Top 40 hit on the "Billboard" Hot 100 chart, and attained Top 40 positions in almost every country singles chart it ranked in, including a top 10 position on the Official UK Singles Chart. Clarkson also announced intentions to commission dance remixes for "Take