Dabaran roulette na Las Vegas
Sifili biyu a matsayin abin da aka saba, sifili ɗaya da ƙarin kuɗi, da kuma wuri ɗaya tilo da sifili na uku ya karɓu.

Las Vegas tana gudanar da roulette na Amurkanau'iRoulette na AmurkaDabaran da ke da 0 da 00, ramuka 38, fifikon gidan caca 5.26%. Ba shi ne samfurin da wannan shafin ke amfani da shi a kullum ba.Karanta gaba ɗaya → a yawancin teburai, dabarun sifili ɗaya a ɗakuna masu iyaka mai girma, kuma dabarun sifili uku a mafi ƙarancin kuɗi kaɗan a titin Strip tun 2016. Mafi ƙarancin kuɗin teburi, ba fifikon gidan cacalissafiFifikon gidan cacaKason kowane kuɗin caca da gidan caca ke riƙewa a matsakaici: 2.70% a roulette na Turai.Karanta gaba ɗaya → ba, shi ne abin da teburin cacakayan aikiTeburin caca (layout)Ragar caca da aka buga a kan tebur. Ana kuma kiransa: table, felt, cloth.Karanta gaba ɗaya → ke tallatawa.
Dabaran da aka saba
Roulette ya iso Amurka da sifilaidabaranSifiliRamin kore guda ɗaya da babu cacar ɗaya zuwa ɗaya, ta dozin ko ta ginshiƙi da ke rufe shi; tushen fifikon gidan caca. Ana kuma kiransa: sifili ɗaya, 0.Karanta gaba ɗaya → biyu kafin Blanc ya cire ɗaya a Turai, kuma babu wani mai gudanarwa a Amurka da ya taɓa samun dalilin bi. Gidajen caca na Nevada suna amfani da dabaran mai ramukakayan aikiRamiƊaya daga cikin ɗakuna 37 masu lamba a kan rotor. Ana kuma kiransa: slot, cup.Karanta gaba ɗaya → 38 a matsayin na yau da kullum: 5.26% a kowace caca, 7.89% a cacar lambobi biyar. Tsarin lambobi a dabaran Amurka ya bambanta da na Turai, kuma cace-cacen bakiteburCacar baki (call bet)Cacar da ake faɗa wa croupier da baki maimakon a ajiye ta da hannu, galibi cacar sashen dabaran kamar voisins ko tiers. Ana kuma kiranta “cacar da aka faɗa”.Karanta gaba ɗaya → ba su da yawa; racetrackteburRacetrackZirin mai siffar ƙwai a kan teburan caca na kai tsaye da na lantarki da ke nuna lambobi bisa jerinsu a kan dabaran, ana amfani da shi don ajiye cacar maƙwabta da ta sashe da taɓawa ɗaya.Karanta gaba ɗaya → yana bayyana galibi a na'urorin lantarki.
Sifili ɗaya, da ƙarin kuɗi
Yawancin gidajen caca na Strip suna ba da dabaran sifili ɗaya a wani wuri, yawanci a ɗaki mai iyaka mai girma da mafi ƙarancin kuɗi na $50 zuwa $100. Lissafi ya ce cacar $100 a sifili ɗaya tana jawo asarar $2.70 a kowane juyi, kuma cacar $25 a sifili biyu tana jawo $1.32; teburin da ya fi kyau ya fi arha a kowace dala kuma ya fi tsada a kowane juyi. Farashin yana hana ɗan wasa mai ƙaramin jarin cacakuɗiJarin cacaJimillar kuɗin da aka ware don wasa. Sarrafa jarin caca shi ne yanke shawarar nawa za a sa a haɗari a kowace caca da kowane zaman wasa.Karanta gaba ɗaya → samun yiwuwar da ta fi kyau, kuma haka aka tsara shi.
Roulette na sifili uku a Las Vegas
A 2016 wani gidan caca a Strip ya gabatar da dabaran mai ramuka 39 da 0, 00 da 000 da aka yi wa alama da tambari, a mafi ƙarancin kuɗi kaɗan. Wasu suka bi. A 7.69% shi ne roulette na yau da kullum mafi tsada a duniya, kuma ya yaɗu daidai saboda ʼyan wasan da ke zama a teburan $5 suna kwatanta mafi ƙarancin kuɗi maimakon ramuka. Bai yaɗu zuwa kasuwannin da teburin sifili ɗaya yake da nisan danna maɓalli ɗaya ba.
Eudaemons da Ritz, sigar Nevada
Las Vegas kuma ita ce inda Eudaemons suka yi amfani da kwamfutocinsu na ɓoye a 1978, inda kwamfutocinsu na takalmi suka kasa a 1981, kuma inda Thorp da Shannon suka gwada tasu a 1961. Nevada ta mayar da martani a 1985 da dokar da ta mayar da mallakar na'urar hasashen sakamakon wasa babban laifi (felony), irinta ta farko kuma abin koyi ga wasu. Gidajen caca a nan suna juya kawunan dabarankayan aikiKan dabaran (wheel head)Wata kalma ce ga rotor: ɓangaren da ke juyawa mai ɗauke da lambobi.Karanta gaba ɗaya → kuma suna auna ramuka kamar yadda ake yi a ko'ina.
Roulette na lantarki
Jerin na'urori a kewayen dabaran zahiri guda ɗaya (ko dabaran mai jefa ƙwallo da iska ta atomatik) sun zama ruwan dare a Strip kuma suna bar ɗan wasa ya yi caca $1 a kan dabaran da zai kashe $25 a teburi. Yiwuwar ita ce ta dabaran: yawanci sifili biyunau'iSifili biyuRamin 00 na dabaran Amurka. Kasancewarsa yana ɗaga fifikon gidan caca daga 2.70% zuwa 5.26%.Karanta gaba ɗaya →, wani lokaci sifili ɗaya. Racetrack da cace-cacen baki sun fi samuwa a allon na'ura fiye da a teburi.

Tallace-tallace da dabaran marar sifili
Gidajen caca na Las Vegas sun taɓa rage farashin lokaci-lokaci. Na ɗan lokaci a 1991, Four Queens a tsakiyar gari ya biya 36 zuwa 1 a kan lambobi ɗaiɗai a teburan sifili biyu, abin da ya rage fifikon straight up zuwa rabi, 2.63%; sauran cace-cace ba su canza ba. A shekarun 1980, Vegas World na Bob Stupak ya gudanar da “Polish Roulette”, inda cace-cacen $5 ko ƙasa da haka ake barin su a kan teburi zuwa juyi na gaba kawai idan 0 ko 00 ya fito. Da sifilai ba sa cikin wasa, ya zama wasa na adalcilissafiWasa mai adalciWasan da babu ɓangaren da ke da fifiko: kowace caca tana da ƙimar da ake tsammani ta sifili.Karanta gaba ɗaya →. Matsalar ita ce iyakar $5: ɗan wasan MartingaledabaraMartingaleJerin ƙarin caca da ke ninka caca bayan kowace asara. Ku duba sashen “Dabarun caca na roulette” don ganin abin da yake yi da wanda ba ya yi.Karanta gaba ɗaya → da ya fara da $1 zai iya yin asara sau uku kawai ($1, $2, $4) kafin caca ta gaba ta wuce iyakar. Iyakar ba ta sa wasan ya zama marar adalci ba; ta sa Martingale ya zama marar amfani. Da yake ana barin cace-cace zuwa juyi na gaba idan sifili ya fito, kowace caca daidai 50-50 ce, don haka yin asara sau uku a jere ($7 ya tafi) yana da yiwuwa daidai da cin nasara sau uku a jere a $1 (an samu $3), kuma Martingale da aka iyakance a matakai uku, wanda ke cin $1 sau bakwai cikin takwas kuma yake asarar $7 sau ɗaya cikin takwas, a matsakaici bai ba da komai ba ko kaɗan.
Tambayoyi
Ee, galibi a ɗakuna masu iyaka mai girma. Wasu ʼyan gidajen caca suna ba da shi a babban falo da mafi ƙarancin kuɗi mafi girma.
Ba kasafai ba. Ya fi yawa a Atlantic City, inda ya rage cace-cacen ɗaya zuwa ɗayacacaCacar ɗaya zuwa ɗaya (even-money)Ja/baƙi, mara/cika, manya/ƙanana. Lambobi 18, biya 1:1.Karanta gaba ɗaya → zuwa 2.63%.
$5 × 7.69% = 38¢ a kowane juyi; $10 × 5.26% = 53¢. Teburin sifili uku ya fi arha a kowane juyi kuma ya fi tsada a kowace dala. Ku yanke shawarar wanne kuke saya.
Ɗan barkwanci

Ana tallata mafi ƙarancin kuɗi. Ba a tallata ramukan.
Majiyoyi
- Bass, T. A. The Eudaemonic Pie.
- Schwartz, D. G. Roll the Bones: The History of Gambling.
- Thorp, E. O. “Optimal gambling systems for favorable games.”
- Bollman, M. Mathematics of the Big Four Casino Table Games: Blackjack, Baccarat, Craps, & Roulette.