Founga Lulēti Peti Fehangahangai
Ko e Contra Bet ko ha lao hangē ko e D’Alembert fakafoki: tānaki ha iuniti ʻe taha hili ha ikuna pea toʻo ha taha hili ha mole.

Ko ha tuʻunga siʻi taha ʻo e iuniti ʻe taha ʻoku ne ʻai ke lava ʻo fakahoko ʻa e lao ʻi he taimi ʻe holoki ai ʻe ha ngaahi mole toutou ʻa e peti hoko ki he noaveʻetekaNoaKo e luo lanu mata pē ʻe taha ʻoku ʻikai kāpui ʻe ha peti totongi tatau, peti tasini pe peti kōlomu; ko e tupuʻanga ia ʻo e tuʻunga lelei ʻo e kasino. ʻOku toe ui: noa ʻe taha, 0.Lau kotoa →. ʻOku ʻikai ke ne liliu ʻa e ʻamanekina fakaʻikai ʻIulope.
Lao mo e ngataʻanga
Ngāueʻaki ha peti totongi tataupetiPeti totongi tatauKulokula/ʻuliʻuli, taʻehoa/hoa, māʻolunga/māʻulalo. Fika ʻe 18, totongi ʻo e 1:1.Lau kotoa → ʻi tuʻa mo ha hiki ʻoku ʻikai lahi ange ʻi he 1% ʻo e paʻanga vaʻingapaʻangaPaʻanga vaʻingaKo e fakakātoa ʻo e paʻanga kuo vahe ke vaʻinga ʻaki. Ko e puleʻi ʻo e paʻanga vaʻinga ko e fili pe ko e hā hono lahi ʻoku tuku ki he fakatuʻutāmaki ʻi he peti takitaha mo e taimi vaʻinga takitaha.Lau kotoa →: hiki ʻaki ha hiki ʻe taha hili ha ikuna pea holoki hili ha mole. Ko ha faʻahinga eni ʻo e D’Alembert fakafoki, pe D’Alembert ʻi he ikuna. Koeʻuhi ʻe lava ke fiemaʻu ʻe ha ngaahi mole toutou ha peti noa pe fakaʻikai, ʻoku ngāueʻaki ʻe he fakatātā ha tuʻunga siʻi taha ʻo e iunitipaʻangaIunitiKo e peti tefito ʻoku ngāueʻaki ʻe ha sisitemi pe ha tokotaha vaʻinga. ʻOku fakamatalaʻi ʻa e ngaahi fakalakalaka peti ʻaki ʻa e iuniti koeʻuhi ke ngāue ʻi ha tēpile pē.Lau kotoa → ʻe taha.
Tēpile ʻo e fakalakalaka peti kuo fakahā
Kamata ʻi he iuniti ʻe 1 pea ʻoua ʻaupito ʻe tuku ʻa e peti ke siʻi hifo ʻi he 1. ʻOku ʻomi ʻe he tuʻunga siʻi taha ʻa e ngataʻanga ʻoku fiemaʻu ke hoko atu ai ʻa e hokohoko hili ha ngaahi mole toutou.
Fakatātā kuo ngāueʻi
Peti ʻa e iuniti ʻe 1 ki he ʻuliʻulipetiʻUliʻuliPeti totongi tatau ki he fika ʻuliʻuli ʻe 18. Faka-Falanisē: noir.Lau kotoa →. Ko ha ikuna ʻoku hiki ai ʻa e peti hoko ki he 2; ko ha ikuna hono ua ʻoku hiki ai ki he 3. Kapau ʻe mole ʻa e peti ʻo e iuniti ʻe 3, ko e hoko ko e 2. Ko ha toe mole ʻoku foki ai ki he 1. Kuo maʻu ʻe he tokotaha vaʻinga ʻa e 1 + 2 − 3 − 2 = −2 ʻi he peti ʻe fā kuo kakato neongo ʻa e ngaahi ikuna kimuʻa, ʻo fakahā ai ʻoku ʻikai ko ha sīpinga peti ko ha fakamoʻoni ʻo e toe maʻu mai.
Totongi mo e fakatuʻutāmaki
Ko hono hiki hili ʻa e ngaahi ikuna ʻoku lahi ange ai ʻa e ngaahi mole ki mui, lolotonga ʻoku faʻa holoki foki ʻe he ngaahi mole ʻa e peti ki he tuʻunga siʻi taha. ʻOku liliu ai ʻa e vēliani mo e taimi ʻo e fakatuʻutāmaki, ka ʻoku ʻikai ko e tuʻunga lelei ʻo e kasino ʻIulope ki he peti totongi tatau ʻo e 1/37 ki he iuniti. Ko ha hiki ʻoku fakahā ko ha peseti ʻo e paʻanga vaʻinga ʻe lava ke ne fakangatangata ha peti kamata, ka ʻoku ʻikai lava ke ne ʻai ha peti fakaʻikai ke lelei. ʻOku totonu ke fakahā ha tuʻunga siʻi taha pau mo e ngaahi lao ʻo e tēpile ki muʻa ke falala ki ha fakamatala ʻo ha fakalakalaka petifoungaFakalakalaka petiKo ha lao pē ʻoku ne liliu ʻa e lahi ʻo e peti ʻo fakatatau ki he ngaahi ola kimuʻa. Ko e ngaahi fakalakalaka fakafepaki ʻoku nau hiki hake ia hili ha mole, ko e ngaahi fakalakalaka fakapapau hili ha ikuna.Lau kotoa →.
Ngaahi fehuʻi
Ko hono hala ko e hala ʻo e D’Alembert fakafoki: ʻoku hiki ʻa e ngaahi peti hili ʻa e ngaahi ikuna pea holo hili ʻa e ngaahi mole.
Kapau ʻoku ʻikai ha tuʻunga siʻi taha, ko hono toʻo hili ʻa e ngaahi mole ʻe aʻu ʻo kole ha peti noa pe fakaʻikai. ʻOku taʻofi ʻe he tuʻunga siʻi taha ʻo e iuniti ʻe taha ʻa e fakahinohino taʻemalava ko ia.
Meʻa fakaoli

Ikuna ʻe ua mo e mole ʻe ua, mole ʻa e iuniti ʻe ua: naʻe hoko ʻa e ngaahi peti lalahi ange hili ʻa e ngaahi ikuna.
Ngaahi Maʻuʻanga
- RouletteDoc, “Contra Bet system” — lao kuo fakahā mo hono taʻemahino
- Roulette77. Fakamatala ʻo e founga mo e ngaahi fakatātā.
- Wizard of Odds, D’Alembert Betting System — puipuitui ʻo e D’Alembert angamaheni
- Wizard of Odds, The Truth about Betting Systems