Dozen an column strategy fi roulette
A roulette dozen strategy bet two dozen or two column one time, an cova 24 outta 37 numba.

Win 64.9% a di spin dem fi a net a +1 unit; lose 2 unit di odda 35.1%. Expected valuemathsExpected valueDi average result pon evry bet inna di long run. −1/37 a di stake fi evry standard European bet.Read di whole ting →: −2.70% a di two unit yuh stake.
Di arithmetic a di two-dozen roulette strategy
One unitmoney mattaUnitDi base stake weh a system or a playa work wid. Dem describe progression inna unit suh dem work at any table.Read di whole ting → pon each a two dozenbet demDozen1–12, 13–24 or 25–36, pay 2:1.Read di whole ting →. A hit inna either one pay 2 an lose di odda one: +1. A miss (di third dozen or zeropon di wheelZeroDi one green pocket weh no even-money, dozen or column bet nuh cover; a weh di house edge come fram. Nex name: single zero, 0.Read di whole ting →) lose both: −2. (24 × 1 − 13 × 2)/37 = (24 − 26)/37 = −2/37 fi evry two unit yuh stake = −1/37 fi evry unit. Same edge as evryting else, different shape: nearly two win outta tree, an evry one worth half a spin weh lose.
Wah mek it feel like yuh a win
Fi win 65% a di spin dem a di highest hit rate yuh can get wid ordinary bet, short a di 25-numba James Bond spread. A session a two-dozen bettin a a long soft sawtooth: up one, up one, dung two, up one. Di average slope a −2.70% a turnovermoney mattaTurnoverAll di money yuh bet ova a session or a period, countin di winnins yuh bet again (all di money yuh bet, roun afta roun). Nex name: handle, action.Read di whole ting →, an cause yuh stake two unit evry spin, di turnover double compare to one single dozen.
- p10 −$500
- p25 −$500
- median −$360
- p75 +$0
- p90 +$280
Progression pon dozen
Fi double di stake afta a loss nuh bring it back pon a 2 to 1 bet di way it do pon even money. Seh yuh lose 2 unit (one pon each dozen), double to 2 an 2, an win: yuh collect 4 an lose 2 pon di odda dozen, net +2, weh only cova di loss bifo an nutten ova. Fi net +1 afta evry loss yuh haffi do more dan double, an di standard dozen progressionstrategy demProgressionAny rule weh change di stake based pon di result dem weh pass. Negative progression raise it afta loss, positive progression afta win.Read di whole ting → a fi triple: 1, 3, 9, 27, 81. Yuh lick a $500 limit fram a $5 base afta five loss; (13/37)⁵ ≈ 0.5% evry try, wid nuff try evry session.
Rotation an “sleepin” dozen
Nuff system weh people sell rotate which dozen fi lef out, usually di one weh hit mos recent or di one weh nuh hit fi a while. Spin independent, suh which 13 numba yuh lef uncova nuh affect nutten. Di system dem a di same as one anodda, an di same as if yuh pick di uncova dozen at random.

Roulette strategy fi di column dem
Evryting up top apply to two columnbet demColumnTwelve numba inna one column weh go up an dung pon di betting layout, pay 2:1.Read di whole ting →, weh cova 24 numba too, or to a dozen plus a column, weh cova 20 (four numba count two time). Di Bet Builder tool gi di exact distribution fi any mix.
A slower double
A pamphlet dem sell inna Las Vegas, Famous Las Vegas Gambling Systems, offa a softer progression fi a column: bet 1 unit, bet 1 again afta a loss, an double only afta two loss inna a row, suh di stake dem run 1, 1, 2, 2, 4, 4, 8, 8 (Bollman, 2024). Di stake dem grow half as fast as a Martingalestrategy demMartingaleProgression weh double di bet afta evry loss. Look inna di Strategy section fi see wah it do an wah it nuh do.Read di whole ting → own, an di price a seh a win nuh always cova di loss dem again: a win pon di second bet a a pair can lef yuh level or behind. Ten miss inna a row cost 62 unit an come bout once inna 50 try, cause a column miss 25 time outta 37. Evry unit yuh stake still cost 2.70%.
Question dem
Higher hit rate, bigga loss, same expected value. Redbet demRedEven-money bet pon di 18 red numba. Inna French: rouge.Read di whole ting → at di same total stake have lower variancemathsVarianceA measure a ow wide di result dem spread roun di expected value. High fi straight up, low fi even-money bet.Read di whole ting →.
Add a chipmoney mattaChipA token weh stand fi a fix amount, weh yuh put pon di betting layout fi mek a bet. Nex name: check.Read di whole ting → pon zero an yuh cova 25 numba; zero den pay 35 − 2 = +33 instead a −2. Di expected value turn −3/37 fi evry tree unit: nuh change fi evry unit.
Fun wid maths
Try dem yuhself fus. Evry ansa fold up; open it wen yuh ready.
Di pamphlet columnbet demColumnTwelve numba inna one column weh go up an dung pon di betting layout, pay 2:1.Read di whole ting → system stake 1, 1, 2, 2, 4, 4, 8, 8 unitmoney mattaUnitDi base stake weh a system or a playa work wid. Dem describe progression inna unit suh dem work at any table.Read di whole ting →, double only afta two loss inna a row, an stop at di fus win. A column pay 2 to 1. Ow far ahead or behind yuh deh if di fus win come pon bet 1, 2, 3 … 8?
Show di ansa
Ansa A win pon bet 1, 3, 5 or 7 lef yuh 2 unit up. A win pon bet 2, 4, 6 or 8 lef yuh +1, 0, −2 an −6 unit: short a di usual +2, an behind fram bet 6 go on.
A win at stake s pay 2s; tek weh evryting weh lose bifo it.
Bet 1 (stake 1): +2. Bet 2 (stake 1, 1 lose bifo): 2 − 1 = +1. Bet 3 (stake 2, 2 lose): 4 − 2 = +2. Bet 4 (stake 2, 4 lose): 4 − 4 = 0. Bet 5 (stake 4, 6 lose): 8 − 6 = +2. Bet 6 (stake 4, 10 lose): 8 − 10 = −2. Bet 7 (stake 8, 14 lose): 16 − 14 = +2. Bet 8 (stake 8, 22 lose): 16 − 22 = −6.
Di fus stake a each pair always net +2; di second one net +1, 0, −2, −6, −14 an suh on, worse evry time. Dat a di price a di slowa climb. A column miss 25 time outta 37, suh ten miss inna a row, 62 unit lose, come bout one time outta 50 try.
Sumting fi laugh

Two dozen: a 65% hit rate wid a 2.70% cost.
Source dem
- RouletteDoc. Roulette strategies overview.
- Roulette77. Roulette strategies overview.
- Ethier, S. N. The Doctrine of Chances: Probabilistic Aspects of Gambling.
- Bollman, M. Basic Gambling Mathematics: The Numbers Behind the Neon, 2nd ed.