A 'Dutch Book' is a formula that works out how to spread your bets around for a selection of horses so that you are guaranteed a return.
To calculate a 'Dutch Book' for a race, you must nominate two things:
- A small selection of horses.
- Desired winnings target.
It will then calculate how much to stake on for each horse in your nominated selection to come in first place. If one of those horses wins the race, your winnings target (plus total outlay) will be returned.