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Dozen strategy

Wait until a dozen has missed two spins in a row, then bet on it at 1, 2, 3, 6 and 12 units, doubling after that, until it comes out. The table places each bet for you.

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Last numbers

Balance
5,000
Last win
0

Right-click or long-press a bet to remove it.

Bet0

Red, black and zero

Call bets

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paid by a dozen
2:1
chance of 7 losses in a row
6.43%
units lost after 7 losses
96

How the dozen strategy works

A dozen covers 12 numbers, 1-12, 13-24 or 25-36, and pays 2 to 1. The strategy waits for a dozen that has not come out for two spins in a row, then bets on it: 1 unit, then 2, 3, 6 and 12 after each loss, then it doubles.

When the dozen comes out, it pays twice the stake: enough to cover the losses of the cycle and leave a profit. The strategy then waits for a new dozen to miss two spins.

The limit: seven losses in a row

A dozen loses 25 times out of 37: the 24 other numbers and zero. Seven losses in a row happen in 6.43% of cycles and cost 96 units. At 5 per unit, the 9th bet would be 960, above a 500 table maximum.

In the tester, with 1,000 to start, 5 per unit, 100 spins and a 500 table maximum, 41% of sessions end in profit and 56% run out of money.

Is a dozen that has not come out due?

No. The wheel has no memory: after two misses, a dozen still has 12 chances in 37, 32.4%, to come out on the next spin, exactly as before. Waiting decides which dozen you bet on, not how often it wins.

Test it on 2,000 sessions

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sessions end in profit
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sessions run out of money
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median session
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worst session
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best session
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sessions hit the table maximum
One session, spin by spin

Every session is played with the same random draw as the table above. Nothing here is an estimate.

Dozen strategy: questions

Is the dozen strategy profitable?

No. Every dozen bet carries the 2.70% house edge of European roulette, whatever came before. The progression wins small amounts often and loses large amounts sometimes.

Which dozen should I bet on?

In this version, the dozen that has missed two spins or more in a row. The choice does not change your odds: any dozen has 12 chances in 37.

Can I play the strategy on two dozens?

Yes: covering two dozens wins 24 times out of 37 but pays only 1 unit net per win. See the Relaxed strategy, which bets on two dozens.

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