Multiplying in the Pocket Dimension

(Published on 6. November 2026, 00:00 by AaronH)

This puzzle is based on the Tenth Box rule by Liamhere. If you enjoy this puzzle, I highly recommend checking out his fantastic The Tenth Box series.

"The portal opens and you simply fall through - but where even is here? It feels similar, but also different, perhaps smaller than usual. All the rules seem the same, only somehow condensed. You decide to just act normal and hope everything else decides to follow your lead."

Rules

Sudoku: Fill the grid with digits 1-9 so that no digit repeats in any row, column or 3×3 box.

Tenth Box: The nine centre cells of each 3x3 box (highlighted) form a "Tenth Box", which must also contain the digits 1-9 without repetition. Each regular 3x3 box has all its clues projected on to the Tenth Box. Separate line segments remain as separate clues in the tenth box. In other words, the Tenth Box contains a copy of every clue in the puzzle. Example at AaronH.net/eg/tenthbox

All following variant clues use their standard meanings - full descriptions are provided below.

Multiple Lines: Every pair of adjacent digits on a white line must have one digit divide evenly into the other.
Black Dots: A black dot connects two digits where one is exactly double the other.
Yellow Dots: A yellow dot connects two digits that are not consecutive.

▶️ Walkthrough video coming soon