System bets: Yankees, Lucky 15s, and friends

System bets are a fixed bundle of accumulators across the same selections. A Yankee, for example, is 11 bets across 4 selections — every double, treble, and the four-fold. You only need two legs to win to get a return.

Why use one

Single-line accas are all-or-nothing. System bets spread the risk: if one leg lets you down, the smaller-fold combinations can still pay. The downside is the stake — every "bet" inside the system costs you the unit stake.

The standard ladder

• Trixie — 3 selections, 4 bets (3 doubles + 1 treble)
• Patent — 3 selections, 7 bets (Trixie + 3 singles)
• Yankee — 4 selections, 11 bets
• Lucky 15 — 4 selections, 15 bets (Yankee + 4 singles)
• Canadian / Super Yankee — 5 selections, 26 bets
• Lucky 31 — 5 selections, 31 bets
• Heinz — 6 selections, 57 bets
• Lucky 63 — 6 selections, 63 bets
• Super Heinz — 7 selections, 120 bets
• Goliath — 8 selections, 247 bets

Custom system bets

You don't have to stick to the named bets. Pick any combination of fold sizes — for example "8 selections, doubles and 5-folds only" — and the calculator works out the bet count, stake, and return.