Have the book?
Speak your first word at the door above. Each vault you crack drops its rewards and stamps your passport.
To the door ↑PUZZLESECRET · a series of secrets
The series
Volume I · The Keeper's Vault — four more secrets to come
One glowing seam. A different secret sealed in every book.
This experience speaks. Turn your sound up, and step to the door.
Prefer silence? — captions stay on.
Speak the first word
Tap Speak and say the word aloud — or type it in the boxes.
What is this?
Every puzzle in Sudoku with a Secret is an honest sudoku — solvable with a pencil. But twenty of them hide a shaded key. Decode the three words they spell, bring them here, and three vaults swing open: treasure, lore, and free bonus puzzles — 50, then 100, then 200. No email required. Ever.
Speak your first word at the door above. Each vault you crack drops its rewards and stamps your passport.
To the door ↑Sudoku with a Secret · Volume 1 — 200 puzzles, 3 vaults, one hidden password. $14.99 in paperback. Or try 200 free puzzles here first.
Join the Keeper's list for fresh puzzles and first word on the next volume. Optional, always.
The Keeper's listThe vaults to come



