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.
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.
No tracking. Open source.