SCRABBLE is a word game in which two to four players score points by forming words from individual lettered tiles on a game board marked with a 15×15 grid. The words are formed across and down in crossword fashion and must appear in the agreed dictionary.

Believed to have originated in ancient India, chess made its way to Persia in the 6th century. By the year 1000 it had spread throughout Europe.

While the rules of Go are quite simple, the game itself is quite complex, more so than chess, with more permutations than the total number of atoms in the visible universe.