Box Brain Sudoku
Free sheets
Printable sudoku and braille sheets
Make free sudoku sheets: on paper to print, or in braille for embossers and swell paper. Every puzzle has one solution, and the answers come at the end.
Print on paper
Any of the twelve modes, one large puzzle to a page. Your browser’s print window can also save the sheets as a PDF.
Want whole books? The app prints puzzle books in every mode and difficulty with Pro.
Braille sheets
For braille embossers (.brf) and swell paper (PDF), free for everyone. Classic, Diagonal, Anti-Knight and Hyper: the modes whose rules fit in a line of braille.
How the sheets are laid out
- Headings in grade 1 English braille (UEB), whatever the language of this page.
- 30 cells to a line and 25 lines to a page. One puzzle to a page, then each answer on its own page.
- Digits with the number sign. An empty cell is two cells of dots 3-6.
- Dots 4-5-6 between boxes along a row, and a line of dots 2-5 between bands of boxes.
- Swell paper: print the PDF at 100% on A4, then run the sheet through a heater.
The first page, for a sighted helper
Prefer to solve on screen? Play in your browser, or get the app.
- Every row, column and 3×3 box holds 1 to 9 once each.
- Classic rules, plus: the digits in each dashed cage add up to its total, with no repeats in a cage.
- Rows and columns hold 1 to 9 once, and so does each thick-edged shape.
- Classic rules, plus: digits get bigger along each thermometer, from the bulb to the tip.
- Classic rules, plus: the digits along an arrow add up to the digit in its circle.
- Classic rules, plus: a number outside the grid is the sum of the digits between the 1 and the 9 in that row or column.
- Classic rules, plus: a white dot joins consecutive digits, a black dot joins a digit and its double. No dot means neither.
- Classic rules, plus: each sign points at the smaller of its two cells.
- Classic rules, plus: both long diagonals hold 1 to 9 once each.
- Classic rules, plus: the four shaded 3×3 areas hold 1 to 9 once each.
- Classic rules, plus: two cells a chess knight's move apart can't hold the same digit.
- Classic rules, plus: shaded squares hold even digits, circled cells hold odd digits.