Super Scrabble standard "Scrabble" in "Super Scrabble" are summarized by the latter's tagline, "More spaces, more tiles, more points—add to your fun!" The board is larger; (21×21 or 441 squares vs. 15×15 or 225 squares); there are more premium squares (going up to quadruple letter and word score spaces); there are 200 tiles, twice as many as a normal "Scrabble" set. The middle 15×15 squares are identical to a "Scrabble" board, so standard "Scrabble" may be played on a "Super Scrabble" board. All the high-scoring quadruple premiums lie near the outside of the board, with the quadruple word squares at the four
Scrabble variants and the equal sign in a Scrabble-like placement. A similar Scrabble-like arithmetic game was published in Australia, during the 1970s, under the name "Equable". Number tiles were white, arithmetic operations and symbol tiles (including decimal point, fraction-dashes, and percentage) were grey, and players could freely take special equal-sign tiles when they made their move. Clearly the name was meant to evoke the conceptual link with Scrabble. The game-board also had bonus-squares. One of the earlier number-based variants, Numble was a physical board game using numbers and basic mathematic equations (addition, subtraction, multiplication, division). Players form valid equations. Triolet uses pairs