Betza's funny notation ones. The notation is based on dividing moves that can be made on a board of squares into groups of symmetry-equivalent moves, the moves within a group differing only in the direction in which the step is taken. Each such group (referred to as "atom") is indicated by a capital, such as N for the 8 moves of the knight. The letter that represents the atom is usually the first letter of the simplest piece from current or historic chess variants that has this move, such as A and F for the alfil and ferz of shatranj (ancient Arabic/Persian chess).
Piece by Piece Tour show is mixed with her greatest hits, new material off her latest album "Piece by Piece" and covers. Clarkson brought back "Fan Requests". For "Fan Requests" Clarkson picks a song that was requested via Twitter from someone in the audience each night and her and her band learn the song that day. Starting on July 16, in New York City, Clarkson started doing "KC Classic" in which Clarkson picks a different song each night from her catalog that is not used in the setlist. Also for this tour Clarkson had an "Open Mic Night" where she gave fans the opportunity