• Everyone gets the same six numbers and the same target each day. One game per day, new puzzle at 00:00 UTC.
• Combine two numbers with an operation and the result becomes a new tile. Each number can be used once.
• Every result must be a positive whole number: no negatives, no fractions.
• Hit the target and you are done. If you can’t, press Submit and your closest number counts.
• Keyboard: + − * / pick an operation, Backspace undoes.

Full guide, worked example and tips