An advanced arbitrage calculator for sports betting that involves counter betting future odds. The idea is you pick a massive underdog. You enter how many rounds are remaining. Enter the odds of the underdog. Then you can click calculate absolute min. This tells you the exact minimum odds needed for arbitrage of the counter-betting opponent. If you have odds that exceed the absolute minimum, you can enter them in the Minimum Odds field which is also the odds of the team you are counter betting against. You can then have the algorithm calculate you two betting strategies. One is optimized for return (meaning the underdog will win in the final round). One is optimized for immediate payout in round 1. Meaning you will achieve the profit in round 1.
This calculator assumes the counter odds are constant in ever round but future versions will allow you to enter custom expected odds with various strategies.
I have blurred out the outputs in red because I havent seen this strategy anywhere online.