The essential matchstick equation toolbox :)

Made by Narve. Comments and feedback welcome on the Github project page.

Enter your puzzle in the input box, or click on any equation to analyze it. If the equation is incorrect, any solutions will be displayed. If the equation is correct, possible puzzles (simple mutations) will be displayed.

Some sample problems:

Confused? Have a look at the Rules section below to see which moves are legal.

Rules

Only one match may be moved. The table below lists possible moves.