Learning how to play All Ten takes about two minutes. Getting good at it takes a little longer — and that is exactly why the puzzle works.

The rules of All Ten

Every day you get four numbers. Your job is to make each target from 1 to 10.

Every expression must follow three rules:

1. Use all four numbers, each exactly once.
2. Combine them with +, −, ×, ÷ and brackets.
3. Concatenation is allowed — 2 and 4 can become 24.

Fractions in the middle of a calculation are fine. Negative numbers are fine too. Only the final result has to land on the target.

A worked example

Take the numbers 1, 2, 3, 4:

• 1 = (1 − 2) × (3 − 4)
• 5 = (2 × 3) − 4 + 1
• 10 = 1 + 2 + 3 + 4

Notice how brackets change everything. (2 × 3) − 4 + 1 is not the same as 2 × (3 − 4) + 1.

Tips for your first week

Start with the easy targets. 1 is often two equal things cancelling out, like 9 ÷ 9. 10 is frequently a plain sum. Bank those first.

Work backwards from the target. Ask: what plus or minus something gives me 7? Then try to build that “something” from the remaining numbers.

Save concatenation for last. Most daily puzzles can be finished without joining digits. If you are stuck on one stubborn target, that is usually when 2 and 5 quietly become 25.

When you are truly stuck, the All Ten solver will show you a working answer instantly, and the daily puzzle refreshes every morning. For deeper tactics, keep an eye on this blog — our strategy guide publishes next.

Why people keep coming back

All Ten sits in a sweet spot. It is short enough for a coffee break, but deep enough that a “hard” day can nag at you for hours. Ten small wins per puzzle keeps the dopamine honest, and the daily streak gives you a reason to return tomorrow.