Wordoku
Solve a wordoku, a sudoku played with nine letters that often hides a word along a diagonal.
A wordoku is a sudoku that uses nine distinct letters in place of the digits 1 to 9. Every row,
every column, and every three by three box holds each letter exactly once. The solved grid often
spells a nine letter word down a diagonal. Paste nine lines of nine characters below, using any of
., 0, _, or a space for a blank cell.
Detected from the puzzle by default. Override to set the display order.
How it works
The tool reads the nine distinct symbols from your grid and maps them to the numbers 1 to 9. It then solves the puzzle exactly like an ordinary sudoku: each empty cell must take a value that does not already appear in its row, its column, or its three by three box. A depth first search fills the first empty cell with every legal value in turn and backtracks whenever a choice leads to a dead end. The first complete grid it finds is mapped back to your letters.
Wordoku puzzles are usually built so the answer spells a word, most often down one of the two long diagonals, so the solver lists both diagonals and every row to help you read it. If the givens already break a sudoku rule, or there is no way to fill the grid, the tool says so. It also checks whether a second distinct solution exists and warns you when the puzzle is not unique.