Where logic meets learning

The Sudoku you'll actually remember.

A classic 9×9 grid meets a question worth answering. Solve it, and the shaded squares spell out the answer — the events, songs, films, and people worth knowing.

Solve the grid — the shaded squares reveal the answer.

Read it your way

Learn a language while you solve.

Every themed collection comes in all six languages — solve in the one you’re learning, or the one you already love.

In English, Spanish, French, German, Italian and Portuguese
The idea

Two puzzles in one.

SU —

Solve it.

A genuine 9×9 Sudoku, easy to hard — the same satisfying logic, hand-built by a veteran constructor.

KNOW —

Know it.

The shaded cells spell out the answer to a question — about the events, songs, films, and people of a lifetime.

KU

Remember it.

Where ordinary Sudoku ends at the last digit, Suknowku leaves you with something worth keeping.

Try one — free

Solve a sample. Right here.

Pick a collection, fill in the grid, and the shaded squares reveal the answer. No app, no sign-up — switch the language up top and the puzzle follows.

Pick a collection

✓ Solved — the shaded squares spell it out
That's 1 of 50 in this collection. Get the book on Amazon →
The catalog

Find your collection.

Themed Collections · six languages

Paris. Texas. London. Austen. The Civil War. And More.

Puzzle collections built around the places, eras, and stories people love — each published in all six languages, for history buffs, language learners, and anyone who likes a little knowledge baked into the grid.

Browse the collections →
Suknowku themed collections
Also — Birthday Sudoku

A book for every birth year, 1945–1964.

The milestone-birthday gift, built around a lifetime of songs, films, and headlines — not a snapshot of one year, but the decades you actually remember.

Find a birth year →

31 titles in print  ·  6 languages  ·  20 birth years

For organizations

A puzzle book made for you.

Marking an anniversary, a reunion, a milestone, or a cause? We build custom Suknowku books around your facts, your year, your story — a memorable keepsake for members, guests, donors, or alumni.

  • Anniversaries
  • Reunions
  • Fundraisers
  • Member gifts

Tell us about it

The maker

Hand-crafted by an expert human

Since publishing his first New York Times crossword in 2001, James Rogers has gone on to place puzzles in the Los Angeles Times, the New York Sun, and Games magazine. He has served as Puzzles Editor for the SN Brussels Airlines in-flight magazine CONNECT (2003–4), European Voice (2004–7), and E!Sharp magazine (2007–8). More than 250 of his crosswords have appeared in print.

Suknowku is his format — where the logic of Sudoku meets a twist of trivia, so every solved grid leaves you with something to remember.