Abstract: What is described is an arithmetic board game with a square grid board of spaces and a set of 135 playing tiles bearing indicia as pips representing fifteen each of the numerals zero through eight which are as well colored in nine distinct hues corresponding to the numerals. The challenge to players is to alternately form straight lines from their individually held six randomly drawn tiles as a row, column or diagonal line which interlocks with other lines previously placed on the playing board. Each of said lines is required to have a numerical sum of zero, nine or any multiple of nine. Scoring is based on the numerical summation of each newly formed line, one point earned for each nine value of said line.

Abstract: A portable instrument with strings hammered by strikers operated by keys of a chromatic keyboard is described. The unique tremolo sounding of the strings is sensitively controllable by a players's touch on the keys as well as by manipulation of the instrument during play while holding the instrument by means of shoulder strap, the player standing or walking.