Surebet leg

A two-outcome surebet has two legs; a three-outcome one has three. The stake on a leg equals bankroll × (1/k) / Σ(1/k), so the payout on every leg is the same.

In a Dozor card, a leg shows the bookmaker, the odds, the price age and the calculated stake. If you couldn't place one leg (a limit, a cancellation, the odds moved), the other one remains an ordinary bet with ordinary risk.

Example: odds of 2.10 and 2.05, a bankroll of 10,000 ₽. The inverses are 0.476 and 0.488, and their sum is 0.964, below one, so there is a surebet. First leg: 10,000 × 0.476 / 0.964 = 4,940 ₽; second leg: 5,060 ₽. The payout on either outcome is about 10,370 ₽, a profit of 3.7% of the bankroll. The surebet calculator does the same math.