Scrabble letter distributions "X" are not used in Turkish and therefore do not appear in the set. Blanks may not represent these letters, meaning loanwords that may use them may not appear in the game at all. Tuvan-language Scrabble sets, which use Cyrillic letters, use these 125 tiles: The distribution lacks four letters used only in loanwords: Ф, Ц, Щ, and Ь. This version is made for educational purposes and is not an official edition by Mattel. An optimum Ukrainian-language Scrabble sets, which use Cyrillic letters, contain 104 tiles using this distribution: The apostrophe sign is also included, even though it is not
Scrabble variants or triplets of numbers that sum up to less than, or exactly 15, respectively. The placement of the pairs or triplets is similar to Scrabble. Triolet means "triplet" in French. Yushino uses number sequences where every number is the last digit of the sum of the previous two. For two number sequences it requires that the numbers are adjacent. Mixmath, a game developed by Wrebbit, also involves placing correct mathematical equations on a board with bonus squares similar to a scrabble board. Scrabble Upwords (originally just named UpWords) is played with 100 letter tiles on a special 10×10 board with