2/3 Roulette System
2/3 Roulette System 28 spins dekhta hai, phir 16 na aaye numbers ko straight-up chips se cover karta hai. Pichhle spins ka record agle spin par un numbers ko zyada likely nahi bana sakta.

Bataya gaya rule theek 16 na aaye numbers tabhi deta hai jab 21 alag pockets aa chuke hon. Fixed 16-chip layout ke saath hit net +20 aur miss −16 deta hai, yaani har bet par 16/37 units ka expected lossganitExpected lossExpected value guna kul lagayi gayi raqam; ek session ya ek muddat mein ausat nuksaan.Poora padhein →.
Bataya gaya observation rule
28 European-wheel results darj karein. Chalne wala trigger maangta hai ki spins 26–28 mein koi number dohraya ho aur poore record mein zyada se zyada 21 alag pocketssaamanPocketRotor ke 37 numbered khaanon mein se ek. Doosre naam: slot, cup.Poora padhein → hon. Yeh analysis layoutsaamanLayoutTable par chhapa betting grid. Doosre naam: table, felt, cloth.Poora padhein → ko theek 21 alag pockets tak seemit rakhta hai, kyunki rule 21 se kam wala case nahi batata. Theek 21 alag pockets dikhne par 37 mein se 16 pockets na aaye rehte hain, isliye agle spin ke liye un 16 numbers mein se har ek par ek straight-up chippaisaChipEk fixed raqam ka token, jise bet lagane ke liye layout par rakha jaata hai. Doosra naam: check.Poora padhein → rakhein. Observation ek layout pehchanta hai; agle pocket ki bhavishyavaani nahi karta.
Ek important unsuljha case
21 se kam alag pockets hone par 16 se zyada numbers na aaye rehte hain. Rule nahi batata ki kaunse na aaye numbers chhodne hain, isliye yeh case ek anirdisht chunav hai, chupchaap koi bhi 16 chunne ki ijazat nahi. Isliye yeh analysis sirf poori tarah tay layout ko jaanchta hai: theek 16 one-chip straight-up bets.
Fixed 16-number payout ki table
Har bet par saare 16 chips live hote hain. Straight-up jeet chip samet uska 36 guna wapas deti hai, jabki baaki 15 chips haarte hain.
Worked example
Maan lijiye record mein theek 21 alag pockets aur 7 repeats hain, jinmein ek repeat spins 26–28 mein hai. Tab baaki numbers ek tay 16-number set hain. Agar agla spin un 16 mein se ek hai, to uska one-unitpaisaUnitBase stake jismein koi system ya player kaam karta hai. Progressions units mein batayi jaati hain taaki kisi bhi table par laagu hon.Poora padhein → straight-up return 36 hai aur saare 16 chips ke baad net +20 hai. Agar woh baaki 21 pockets mein se koi hai, to koi chip wapas nahi aata aur result −16 hai. Pichhla record 16/37 aur 21/37 probabilities nahi badalta.
Alag pockets ki koi pakki seema nahi hai
37 independent European-wheel spins ke baad alag pockets ki expected sankhya 23.5745 hai. Yeh average koi upper limit nahi hai: 24 se zyada alag pockets dikhne ka chance 31.2839% hai. Occupancy average kai samples ko batata hai; kisi ek record par maximum nahi lagata ya baad ke spins se pichhle repeats ki bharpai nahi karwata.
Risk aur expectation
Fixed layout ke liye expected net (16 × 20 − 21 × 16) / 37 = −16/37 units per bet hai. Yeh 16 units ke turnoverpaisaTurnoverSession ya muddat mein lagayi gayi kul raqam, dobara lagayi gayi jeet milakar. Doosre naam: handle, action.Poora padhein → par lagne wala usual European 2.70% nuksaan hai. Layout +20 result ko ek single straight-up hit se zyada baar la sakta hai, lekin jab bhi uska koi chuna number na aaye, 16 units ka risk bhi leta hai. Cold numbers chunne se na coverage badalti hai na expected valueganitExpected valueLambe samay mein har bet ka ausat nateeja. Har standard European bet ke liye stake ka −1/37.Poora padhein →.
Sawaal
Nahi. Har agla European-wheel spin har pocket ko phir bhi probabilityganitProbabilityKisi outcome ka chance, 0 se 1 tak ya 0% se 100% tak. Ek number: 1/37 = 2.70%.Poora padhein → 1/37 deta hai. Na aaye number ka agle result par koi jama hua haq nahi hota.
Bataya gaya rule nahi batata ki 16 se zyada na aaye numbers mein se kaunse chhodne hain. Fixed layout ki tarah analyse hone se pehle poore rule ko yeh chunav batana hoga.
Thodi hansi

Solah na aaye numbers bhi 37 mein 16 spins hi jeette hain, zyada nahi.
Sources
- RouletteDoc, Strategy overview
- Roulette77, Strategy overview