Arthur Whitney's one liner sudoku solver (2011)
(dyalog.com)
The Sudoku puzzle consists of a 3×3 grid of 3×3 boxes, each cell of which is either empty or contains a number in the range 1 to 9.
The Sudoku puzzle consists of a 3×3 grid of 3×3 boxes, each cell of which is either empty or contains a number in the range 1 to 9.