You have to find the hidden calculation in six tries. Each day the calculation is different, equals to something else. There are four modes, from easy to killer. There are also additional rules such as:

• numbers and operators can appear multiple times
• commutative solutions are accepted, for example 20+7+3

Colours change like usual (green = correct place, yellow = correct number but uncorrect place, gray = is not in the solution)

Currently free-to-play without the need to register