Reach the target using the six numbers. Each number can be used once.
Tap a number, then + − × or ÷, then a second number. The answer becomes a new number you can keep using.
Only whole numbers above zero are allowed, so a division has to come out exactly.
You don't have to use every number. Getting close counts.
Scoring: exact is 10, within 5 is 7, within 10 is 5.
There's one daily puzzle, the same for everyone, and it's always solvable. Practice is unlimited.
How it's picked
The daily puzzle is worked out from the SHA-256 hash of dk-numbers|DATE|n (London date). Nobody chooses it, and your browser can check it. The first n that has an exact answer is used.