Catkuby Raimon Parreño Today's Catku Play and print How to play The books Español

Free, for pencil and paper

16×16 sudokus to print

A new one every day, free, no sign-up

A different 16×16 sudoku every day, ready to print on one sheet.

It is the sudoku you know, multiplied: 256 squares instead of 81, sixteen symbols per row and 4×4 boxes. Where the digits run out the letters begin, 1 to 9 and A to G.

One solution, checked by computer, and solvable by reasoning alone.

It opens the puzzle page, draws a new one and brings up your browser's print dialog. The sheet comes out in English; the rest of that page is still in Spanish.

And on paper, properly

If you like doing them with a pencil, there is a whole book: 127 Sudoku 16×16, paperback, 8.5 × 11 inches, with big grids and the answers at the back.

And there is a new Catku every day on this site, free, with the other five to play or print.

Play today's

The other puzzle books