Divide-by-N Recovery

Overview

A two-phase recovery plan: after accumulating losses, divide the total loss by N and then aim to win N consecutive bets at that calculated stake. If you lose during the N-win streak, recalculate and restart. Clever, but demands discipline and a reasonable strike rate.

How It Works

Phase 1 — Initial bet: Bet at base stake. If it loses, attempt one recovery bet to recoup. If that also loses:

Phase 2 — Divide-and-conquer:

1. Calculate total loss from the failed recovery sequence
2. Divide total loss by N (e.g., 4)
3. The result is your new stake
4. Place this stake on the next N bets — you need to win ALL N in a row
5. If you win N in a row: Total loss is recovered → return to Phase 1
6. If you lose during the N-win streak: Recalculate total loss (including the new losses), divide by N again, restart the N-win attempt

Example (N=4, £10 base):

• Bet 1: £10 lay. Lose (−£30). Bet 2: Recovery stake. Lose (−£60 more). Total = −£90.
• Divide £90 by 4 = £22.50. Need 4 consecutive winning lays at £22.50 each.
• Win, Win, Lose on 3rd. New total loss = £90 + £22.50 (loss on 3rd) = £112.50.
• Divide £112.50 by 4 = £28.13. Need 4 consecutive wins at £28.13.

Parameters

Parameter	Type	Default	Description
base_stake	number	10	Starting stake
N	number	4	Divisor and consecutive wins needed
max_stake	number	—	Optional absolute stake cap
max_cycles	number	—	Maximum divide-and-conquer attempts before giving up

Risk Assessment

• Risk Level: High
• Max Drawdown: Can escalate if N is small (larger stake per bet) or if losing streaks persist during N-win attempts
• Recommended Bankroll: 50× (expected max total loss / N)
• Ruin Risk: High — the “N consecutive wins” requirement is steep

⚠️ Critical Warning

Winning N consecutive bets is geometrically harder than winning any single bet. At a 70% strike rate, the probability of 4 consecutive wins is 0.7⁴ = 24%. At 50%, it’s just 6.25%. This plan can enter very long recovery cycles.

When to Use

• Very high strike rate (>75%)
• You have a large bankroll and steel nerves
• You’re willing to set a hard max_cycles and accept the loss if exceeded

When to Avoid

• Strike rate below 65% (N=4) — you’ll rarely complete a streak
• Small bankrolls
• You can’t tolerate long losing/recovery sequences

Betfair Exchange Notes

• Originally proposed for lay betting on greyhounds
• For lay, the stake is the lay stake; liability = stake × (odds−1)
• Consider using liability-based calculations instead of stake-based

Related Plans

• Recovery — Single-bet recovery (no divide-and-conquer)
• Stop at a Winner — Reset on any winner (only needs 1 win)
• Diluted Loss Recovery — Spread loss across many bets (opposite philosophy)

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Sources

• Plan source: WellDone Community Forum — “Greyhound trigger” — user-contributed concept by Dace
• Plan mechanics: Mathematical formulas and plan concepts are in the public domain