“There are two reasons you might encounter the four letters ‘doku’ on the back page of your newspaper. The first is when preceded by the letters ‘Su’. The second is when preceded by the word ‘Jeremy’. Sudoku, for those uninitiated, is the Japanese logic game that suddenly exploded in English-language media two decades ago. Players are given a 9×9 grid, which is also divided into nine squares. Some numbers are already written in. The player must complete the grid by entering the numbers 1-9, but each individual number cannot appear twice in any row, column or square. …”
NY Times/The Athletic – Michael Cox (Video)