Free PDF packs · 6×6, 8×8 & 10×10 · Answers included
Nine packs, 20 original puzzles each, answer sheets at the back. Free PDFs sized for US Letter and A4 — no account, no email, no watermark.
180 puzzles across nine packs — one for every grid size and difficulty. Each PDF opens with a rules line, prints four 6×6 boards to a page (two for the bigger grids), and finishes with numbered answer sheets. The puzzles were generated for these packs only, so nothing in them spoils the daily puzzle or the library on the site.
Naked singles only
20 puzzles · digits 1–6 · 2×3 regions
The gentlest set. Big cells, plenty of givens — the pack to print for kids or a classroom warm-up.
Hidden singles needed
20 puzzles · digits 1–6 · 2×3 regions
Fewer givens, so you will need hidden singles. Four puzzles per page.
Pencil marks recommended
20 puzzles · digits 1–6 · 2×3 regions
Ten to twelve clues per board. Small grid, real bite.
Naked singles only
20 puzzles · digits 1–8 · 2×4 regions
Digits 1–8 with a generous start. A step up from 6×6 without the long scan.
Hidden singles needed
20 puzzles · digits 1–8 · 2×4 regions
The everyday 8×8 set — enough resistance for a coffee break.
Pencil marks recommended
20 puzzles · digits 1–8 · 2×4 regions
Around twenty clues. Bring a pencil and your candidate marks.
Naked singles only
20 puzzles · digits 1–10 · 2×5 regions
Big boards, gentle logic. Two puzzles per page so the cells stay writable.
Hidden singles needed
20 puzzles · digits 1–10 · 2×5 regions
Digits 1–10 with room to work. The longest of the medium sets.
Pencil marks recommended
20 puzzles · digits 1–10 · 2×5 regions
The hardest thing we print. Expect to fill in candidates before anything falls.
Yes. Every pack is a free PDF — no account, no email, no watermark. Download the ones you want and print as many copies as you like.
Please do. Teachers, care homes and puzzle groups are welcome to print and hand out copies. The 6×6 easy pack is the usual starting point for kids. The only thing we ask is that you do not resell the packs or strip the site name off the page.
Print at 100% or "actual size" rather than "fit to page", on US Letter or A4 — the pages are Letter-sized with a margin wide enough that A4 crops nothing. Black and white is fine; there is no colour anywhere in the packs.
At the back of every pack. Puzzle pages come first, then the answer sheets, numbered to match. Print just the puzzle pages if you would rather not have the key sitting on the table.
No. The 180 puzzles in these packs were generated for print only, so nothing here spoils the daily puzzle or the 900-puzzle library you can play in the browser.
Easy boards can be finished with naked singles alone. Medium needs hidden singles. Hard means the straightforward scans run out and you will want pencil marks. It is the same grading the puzzles on the site use.