one little moveMATCHSTICK PUZZLES
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1MATCH

Matchstick equationTap a match to pick it up, then tap an empty dotted slot. You can also drag. With a keyboard, use arrow keys to explore, Enter to select, and Escape to cancel.
Tap a match, then a dotted slot. Or drag it.

No clock. No rush. Just one good idea.

THE LITTLE RULES

One match. Many possibilities.

Make the equation true by moving exactly one match to an empty dotted slot. Matches may turn as you move them.

  1. Tap a wooden match to pick it up.
  2. Tap a dotted slot to put it down. Or drag the match into place.
  3. If it isn't quite right, undo and try another idea.

Every digit must be a standard seven-segment number from 0 to 9. Signs can be + or −. The = sign stays fixed. Each chapter tells you where you may move.

Keyboard: Tab onto the board, use the arrow keys to explore, Enter or Space to pick up and place, and Escape to cancel. Hints reveal a little more each time.
YOUR MATCHBOX

Twenty-four little sparks.

Play in order, or follow your curiosity.

A tick means you've solved it before. Replay any time.