Daily Challenge
10 questions, fixed difficulty. Track your progress day by day.
Sprint
Solve as many as you can before time runs out.
Survival
60 seconds on the clock. Correct = +6s. Wrong = -2s. How long can you last?
Estimate
10 krumme Aufgaben. Richtig = innerhalb der Toleranz. Trainiere aggressives Runden statt exakter Präzision.
Toleranz: ±10% · änderbar in Settings
Kürzel erlaubt: k / m / mrd (z. B. 1.2mrd, 6.5m, 45k) — oder Buttons oben
Difficulty
Estimate
Data