Train your math skills, memory and focus.

Anomaly puzzle:

Find the outstanding figure. Take the color and shape of the figure into account.

Path finder:

Start at the marked position and follow the arrow instructions to find the destination.

Mental calculation:

Warm up with simple math calculations.

Mental calculation:

Warm up with simple math calculations.

Sherlock calculation:

Find a formal to get to the requested goal.

Chain calculation:

Solve complex formulas.

Color confusion:

Keep focused.

Fraction calculation:

Solve the fractions.

Height comparison:

Find the formal with the highest result.

You can create your own Riddle or Sherlock calculation and share it.

The game has several achievements and each exercise has medals to keep you motivated.

No tracking. Open source.