Magnets

Place magnetic poles and satisfy every edge clue.

Set opposite poles and satisfy every edge clue.

1222
1222
2212
2221

Magnets sample in progress.

How to play Magnets

Each outlined domino is either a magnet with opposite poles or a blank. Edge clues count positive and negative poles, while matching poles may never touch.

On this sample: Tap each domino to cycle positive-negative, negative-positive, and blank.

  1. A domino is either blank or contains one positive and one negative pole.
  2. Matching poles may not touch across an edge.
  3. Row and column clues give the required number of each pole.

Rule lineage

Simon Tatham's Portable Puzzle Collection

Read the documented source