Step-by-step · Step-by-step · 7 minute

Step-by-step: Oscar’s Grind

One unit up afta a win, same stake afta a loss, stop di cycle wen yuh one unit ahead. Di slowes system weh deh, fi a hundred spin.

Short ansa

A simulate Oscar’s Grind session a 100 spin at $10 a unit pon blackbet demBlackEven-money bet pon di 18 black numba. Inna French: noir.Read di whole ting →. Eight cycle close fi +$10 each, one a dem afta 41 spin, a $50 stake an a $230 drawdown; di ninth one did still open at −$140 wen di session end. Net −$60. Low variance, nuh cliff, same edge.

unit
$10 pon black
rule
+1 unit afta a win, same stake afta a loss
target fi di cycle
+1 unit
result
−$60 ova 100 spin

Walk tru di system

A loss keep di stake di same. A win add one unit, but neva more dan wah di cycle need fi reach +1. At +1 a new cycle start.

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nex stake1dis cycle0result till now0spin0

Stake an result deh inna unit a di base bet.

Di plan

Bet 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 →. Afta a loss, bet di same again. Afta a win, raise by one unit, unless di raise woulda tek di cycle pass +1 unit; if suh, bet only wah yuh need fi finish at exactly +1. Wen di cycle one unit ahead, start ova at one unit. Di stake only go up pon win, suh a losin run neva blow it up; di grind come fram how yuh need a run a win fi climb outta a hole weh yuh dig wid a small stake.

Probability a run inna roulette

Spin 1–30

Four cycle close. Di longes one run eleven spin: Lose Lose Lose (−$30 at $10), Win (−$20, stake go to $20), Lose Lose (−$60), Win (−$40, stake go to $30), Win (−$10; a raise to $40 woulda go too far, suh stake $20), Lose (−$30), Win (−$10), Win: cycle at +$10, close. Net afta 30 spin +$40. Di stake neva go ova $30. It a di mos borin system pon di site, an dat a a compliment.

cyclespintop stakedrawdownnet
13$20−$10+$10
211$30−$60+$10
35$20−$20+$10
411$30−$50+$10
afta 304 cycle+$40

Spin 31–71

Di long cycle. Eight loss inna di fus ten spin dig −$50. Win dem raise di stake to $20, $30, $40, $50; loss at dem stake dig deeper, to −$230 at spin 52. Fram deh a good stretch, eleven win inna sixteen spin wid stake a $40–$50, climb back, an di cycle close at spin 71 fi +$10. Forty-one spin, $230 pon risk at di wors point, one unit earn.

Dis session an nine more like itresult versus di start
+$1,110$0−$1,000+$890−$5000125250375500spinresult
1,000 session × 500 spin · violet p10/p25/p75/p90, light blue median, 83 faint sample · move ova di chart fi see di quantile dem at a spin
  • p10 −$1,000
  • p25 −$1,000
  • median −$1,000
  • p75 +$710
  • p90 +$880
1,000 session × 500 spin · y-axis cut to di 1st–99th percentile (di extreme dem: −$1,000 to +$1,280) · 500 spin · $10 base · even-money bet
Flat fi long stretch, small step up, an now an den a deep hole weh tek long fi climb outta. Di average slope a di usual one.
Forty-one spin an $230 down at di wors point, fi finish one unit ahead.

Spin 72–100

Tree more cycle close, an one drop at spin 100 wen it did deh pon −$140 wid a $30 stake. Final −$60: eight cycle at +$10 an one open cycle at −$140 (di open cycle a di usual way a Oscar session end, cause cycle long).

Di account

Average stake bout $22, total bet bout $2,200 gainst $1,000 flat. Expected lossmathsExpected lossExpected value times all di money yuh bet; di average amount yuh lose ova a session or a period (di loss yuh fi expec pon average).Read di whole ting → $59; actual −$60. A session weh land right pon di expectation, an Oscar’s Grind do dat more often dan odda system cause di 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 → low: di stake only grow wen wi a win, an it neva double.

Wah di session show

Oscar’s Grind a a system weh smaddy design afta im did undastand di odda one dem. It nuh have nuh cliff, di stake stay modest, an it gi yuh long sequence a small win. Di price a time: cycle can run fi forty spin, an di one-unit profit at di end get buy wid a drawdownmoney mattaDrawdownDi drop fram di top a yuh bankroll to a lower point afta dat, inside one session. Maximum drawdown a di bigges drop like dat.Read di whole ting → twenty time it size. Di expected loss pon evry dolla yuh bet a 2.70%, an di grind add dolla.

Question dem

A who Oscar did be?

A craps playa weh Allan Wilson write bout inna The Casino Gambler’s Guide (1965). Di system older dan di name.

Low variance good?

It mean yuh result wi deh close to di expectation. Di expectation negative. Low variance good if yuh waan a price yuh can predict fi a evenin, an bad if yuh waan a chance at a big win.

Wah end a cycle weh nah close?

Yuh bankrollmoney mattaBankrollAll di money yuh set aside fi play. Fi manage yuh bankroll mean yuh decide ow much a it yuh a go risk pon evry bet an evry session.Read di whole ting → or yuh patience. Di system nuh have nuh stop rule; di playa haffi bring one.

Sumting fi laugh

Di slowes way fi lose 2.70%. Di calmes one too.

Di slowes way fi lose 2.70%. Di calmes one too.

Source dem

  1. Wilson, A. The Casino Gambler’s Guide. Harper & Row, 1965.
  2. Ethier, S. N. The Doctrine of Chances: Probabilistic Aspects of Gambling. Springer, 2010. Chapter 13, roulette.
wi check it 2026-09-28model: European wheel, single zeroow wi work it out ↗source dem ↗