Deduce.
Find the secret number using clues: correct, present or absent digits, and whether your guess is too high or too low.
Deduce a number. Spot a pattern. Reach a target. Five ways to think, with that satisfying moment when the answer clicks.
Deduce the secret number.
Five families, five little aha moments. No advanced maths needed to get started.
Find the secret number using clues: correct, present or absent digits, and whether your guess is too high or too low.
Place a number on a line between two bounds. The closer you get, the more points you earn.
Use the given numbers and operations to reach the target.
Look at the sequence, discover its rule and find the missing number.
Place digits 1 to 9 in a grid so every row and column adds up to the required total.
A new secret number to deduce every day. Keep your streak and share your result without spoiling the answer.
Discover the families step by step, earn stars and unlock the next world.
Keep solving, pick a bonus every five wins and chase your personal best.
Pick a family and a difficulty. Play freely, without waiting for tomorrowβs challenge.





Puzzles and progress are available without a connection. Ads, purchases and updates need the internet.
No ads in the middle of a puzzle or a Run. Video hints are optional.
No account needed. Your progress, stars and statistics stay on your device.