Numbers · Math guess
Equation Lock
Six tries to guess today’s hidden equation.
About Equation Lock
Equation Lock is a daily math guessing game. Find the hidden equation in six tries; every guess must be a valid equation, and colored tiles show which characters are correct, misplaced or absent.
Play a new daily puzzle every day, or pick Easy, Medium or Hard in practice mode for unlimited puzzles.
How to play
- Guess the hidden equation in 6 tries. Every guess must be a true equation.
- Use digits and + − × ÷ =; the right side of = is a whole number; × and ÷ come before + and −.
- Green right character, right place; Purple in the answer elsewhere; Grey not in the answer.
Reset only clears the current row.
Type on your keyboard; the letter x also enters ×.
Tips & strategies
- Start with an equation that uses many different digits and operators.
- Remember that × and ÷ are applied before + and −.
- The result on the right is often easy to narrow down first.
FAQ
How do you play Equation Lock?
Guess the hidden equation in 6 tries. Every guess must be a true equation. Use digits and + − × ÷ =; the right side of = is a whole number; × and ÷ come before + and −. Green right character, right place; Purple in the answer elsewhere; Grey not in the answer.
Is there a new Equation Lock puzzle every day?
Yes. A new daily puzzle arrives at midnight (your local time) and everyone gets the same one. Missed days can be played from the archive.
Do I need to sign up or install anything?
No. Daily Brain runs in your browser. You can add it to your home screen and it keeps working offline after the first visit. Progress is stored only on your device.
Are there difficulty levels and hints?
Practice mode offers Easy, Medium and Hard with unlimited new puzzles. Hints are available when you get stuck and are recorded in your result.