Free Printable Medium Sudoku

Free printable medium sudoku puzzles, freshly generated for the daily-paper-puzzle habit. Medium 9×9 grids ship with roughly 30 to 34 starting numbers — enough that you will always have a foothold to begin from, but few enough that you cannot finish on scanning alone. This is the difficulty most newspapers print under names like 'standard' or 'moderate.' Print one, brew a coffee, and you have a fifteen-to-twenty-five minute solve that rewards methodical thinking without demanding a notepad full of candidate marks.

Medium is the sweet spot for the daily-puzzle reader. Easy can feel mechanical to anyone who already knows the rules; expert and above demand a level of attention that does not match a morning commute or a half-hour lunch break. Medium gives you something to think about, but the cognitive load does not overflow into the rest of your day. That is why it is the default difficulty on most printed newspaper puzzles, and why we expect it to be the most popular tier on this site.

The techniques that move you through a medium grid go one step beyond the singles you used at easy. You will still spot the obvious 'this digit fits in only one cell' moments, but you will also need to recognise locked candidates (when a digit in a 3×3 box must sit in a specific row or column of that box, eliminating it elsewhere in the row or column), naked pairs (two cells in the same unit that each take the same two candidates, ruling those digits out for every other cell in that unit), and a careful eye for hidden singles inside busier rows. A short list of techniques, but the difference between fluency and fumbling is whether you spot them in the moment.

Paper solving suits medium puzzles especially well. Light pencil marks in the corners of three or four cells per row are enough to track candidates at this tier — you rarely need the full 3×3 sub-grid notation that becomes essential for expert and evil grids. Crossing out eliminated candidates is faster with a pencil than tapping notes mode on a phone, and the larger grid size on a printed page means your candidate marks stay legible. If you commute by train, fold the sheet in half along the centre and the puzzle fits on a lap tray; if you commute by car, leave the sheet in the kitchen for the evening instead.

This page generates one full-size medium 9×9 puzzle per sheet, sized for A4 or US Letter without manual fiddling. The preview above is exactly what will print — no surprise headers, no truncated last row. Switch to the four-per-page or six-per-page layouts if you want to print a week of medium puzzles at once: weekly batches are popular with regular solvers who want a paper puzzle waiting on the kitchen counter each morning without firing up the printer daily.

Every puzzle on this page is uniquely solvable by logic. There is exactly one valid completed grid for any given starting puzzle, and you can always reach it without guessing. If you ever find yourself stuck on a medium grid, the answer is almost always either a hidden single you missed in a crowded row, or a naked pair you overlooked. Refresh to draw a different puzzle of the same difficulty, or step down to easy or up to hard from the difficulty selector. Free to download, free to distribute, no account required.

For solvers building a paper-puzzle habit, medium is the difficulty most likely to make the habit stick. The solve time matches a typical break, the techniques are interesting enough to engage but not so demanding that you give up halfway, and the success rate is high enough that the habit pays off most days. Many regular solvers print a week of medium puzzles each Sunday and have something on the kitchen counter waiting through Saturday — a small ritual, but one that builds genuine logical-thinking fluency over months.