Challenge calculator for MT5. Your pass chance from risk per trade, win rate and reward:risk against your challenge rules, how attempts fail, and the risk per trade with the best chance. You enter your numbers and the rules, the calculator simulates 5,000 challenges and shows the result on the chart. If your risk is too large for the rules, it says so before you pay for the challenge. Why Trimline Challenge Calculator Traders report the same problems with prop challenges again and again: A chall