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 Tour about opener Pentatonix. She stated she hoped to convince them to sing with her during her set. Nick Jonas and Tyler Shaw were scheduled to open up for Clarkson in October 2015 in Canada, before dates were ultimately cancelled. On May 21, 2015, it was announced that singer Abi Ann would also be opening up for Clarkson. Clarkson confirmed plans to include "Piece by Piece" singles "Heartbeat Song" and "Invincible" in the set list for the show, alongside album-only tracks, "Dance With Me" and "Tightrope", with the latter promised to be a highlight for the show. Speaking to "USA Today",