23

A SMALL STUDIO FOR BIG LITTLE PUZZLES

Paircraft / Dominosa

Fifteen studies.
One of every pair.

FIND THE HIDDEN DOMINO SET

✦

SELECT A NUMBER, THEN A NEIGHBOR TO MAKE A PAIR.

THE STUDY COLLECTION

Everything has
its other half.

Cover the board with dominoes: each is two neighboring numbers, across or down.

Use every unordered pair exactly once. For example, 1–2 and 2–1 are the same pair. Doubles such as 2–2 count too.

Click two neighbors to join them. Repeat to separate them; a new join replaces existing joins. Coral means a repeated pair.

Arrows move · Enter select / join
Esc deselect · Space separate
Z undo · Progress saves on this device.

YOUR DOMINO SET

Unfilled: still to find · Teal: placed · Coral: repeated

NO TIMER. JUST A LITTLE ROOM TO THINK.Adapted from Simon Tatham’s Dominosa · Source & credits · MIT