Nkyerɛkyerɛmu: Oscar’s Grind
Kyɛfa baako kɔ soro sɛ wodi nkonim a, bɛt sika koro no ara sɛ wohwere a, na gyae ɔkwan no kyinhyia mua no sɛ woanya kyɛfa baako mfasoɔ a. Nhyehyɛe a ɛyɛ brɛoo sen biara, kyinhyia ɔha.

Oscar’s Grind agorɔ bere a ɛyɛ sɔhwɛ, kyinhyia 100, $10 kyɛfa biara so wɔ tuntumbɛtTuntumSika pɛ bɛt wɔ nɔma tuntum 18 no so. Franse kasa mu: noir.Kenkan ne nyinaa → so. Ɔkwan no kyinhyia mua nwɔtwe wiee, na biara de +$10 bae; baako wɔ mu wiee kyinhyia 41 akyi, bɛt sika $50 ne dwetire so tew $230; nea ɛtɔ so nkron no da so bue wɔ −$140 bere a agorɔ bere no baa awieeɛ. Mfasoɔ ankasa −$60. Nsakraeɛ sua, ɔbota biara nni mu, kasino mfasoɔ koro no ara.
Nantew nhyehyɛe no mu
Ahwereɛ ma bɛt sika no tena hɔ. Nkonim de kyɛfa baako ka ho, nanso ɛnkɔ soro nsene deɛ ɔkwan no kyinhyia mua hia na adu +1. Wɔ +1 so no, ɔkwan no kyinhyia mua foforɔ fi ase.
Bɛt sika ne deɛ ɛfiri mu ba no wɔ bɛt a wofi ase no kyɛfa mu.
Nhyehyɛe no
To bɛt kyɛfasikaKyɛfaBɛt sika a ɛwɔ ase a nhyehyɛe anaa agorɔfoɔ de yɛ adwuma. Wɔka bɛt nsakraeɛ ntoatoasoɔ ho asɛm wɔ kyɛfa mu sɛdeɛ ɛbɛyɛ a ɛbɛfata ɛpono biara.Kenkan ne nyinaa → baako. Sɛ wohwere a, to deɛ ɛyɛ pɛ bio. Sɛ wodi nkonim a, fa kyɛfa baako ka ho, gye sɛ ɛno bɛma ɔkwan no kyinhyia mua atra kyɛfa +1; saa bere no, to deɛ ɛho hia na woawie wɔ +1 pɛpɛɛpɛ nko ara. Sɛ ɔkwan no kyinhyia mua no anya kyɛfa baako mfasoɔ a, fi aseɛ bio wɔ kyɛfa baako so. Bɛt sika no kɔ soro wɔ nkonim so nko ara, enti ahwereɛ ntoatoasoɔ mma ɛnnyɛ kɛseɛ da; ɔbrɛ no fi sɛ ɛhia nkonim ntoatoasoɔ na woafiri tokuru a wotuu wɔ bɛt sika ketewa so no mu.
Kyinhyia 1–30
Ɔkwan no kyinhyia mua ɛnan wiee. Deɛ ɛwaree sen biara no kɔɔ kyinhyia dubaako: H H H (−$30 wɔ $10 so), N (−$20, bɛt sika kɔ $20), H H (−$60), N (−$40, bɛt sika kɔ $30), N (−$10; sɛ yɛma ɛkɔ $40 a, ɛbɛtra so, enti bɛt sika yɛ $20), H (−$30), N (−$10), N: kyinhyia mua no wɔ +$10, ɛwie. Kyinhyia 30 akyi mfasoɔ ankasa +$40. Bɛt sika antra $30 da. Ɛyɛ nhyehyɛe a ɛnyɛ anigyeɛ koraa wɔ wɛbsaet no so, na ɛyɛ ayɛyie. (N = nkonim, H = ahwereɛ.)
Kyinhyia 31–71
Kyinhyia mua tenten no. Ahwereɛ nwɔtwe wɔ kyinhyia du a edi kan mu tuu tokuru −$50. Nkonim maa bɛt sika no kɔɔ $20, $30, $40, $50; ahwereɛ wɔ saa bɛt sika no so tuu tokuru no kɔɔ fam bio, kɔsii −$230 wɔ kyinhyia 52 so. Ɛfiri hɔ no, bere pa bi baeɛ, nkonim dubaako wɔ kyinhyia dunsia mu wɔ bɛt sika $40–$50 so, na ɛforo sane baa soro, na kyinhyia mua no wiee wɔ kyinhyia 71 so ma +$10. Kyinhyia aduanan baako, $230 wɔ asiane mu wɔ baabi a ɛyɛ den sen biara, na kyɛfa baako pɛ na wonyaeɛ.
- p10 −$1,000
- p25 −$1,000
- mfinimfini nɔma −$1,000
- p75 +$710
- p90 +$880

Kyinhyia 72–100
Kyinhyia mua mmiɛnsa bio wiee, na baako a wɔgyaeɛ wɔ kyinhyia 100 so no gyinaa −$140 so wɔ bɛt sika $30 so. Awieeɛ no −$60: kyinhyia mua nwɔtwe wɔ +$10 ne kyinhyia mua baako a ɛda so bue wɔ −$140 (kyinhyia mua a ɛda so bue no ne ɔkwan a Oscar agorɔ bere taa wie, ɛfiri sɛ kyinhyia mua no ware).
Akontaa no
Bɛt sika wɔ mfinimfini mu bɛyɛ $22, bɛt sika nyinaa bɛyɛ $2,200, na sika pɛ a wɔto daa deɛ yɛ $1,000. Ahwereɛ a wɔhwɛ kwanakontaabuAhwereɛ a wɔhwɛ kwanBoɔ a wɔhwɛ kwan bɔ bɛt sika nyinaa ho; ahwereɛ mfinimfini boɔ wɔ agorɔ bere anaa bere bi mu.Kenkan ne nyinaa → $59; deɛ ɛbaa ankasa −$60. Agorɔ bere a ɛba deɛ wɔhwɛ kwan no so pɛpɛɛpɛ, na Oscar’s Grind taa yɛ saa sen nhyehyɛe foforɔ, ɛfiri sɛ ne nsakraeɛakontaabuNsakraeɛNsusuiɛ a ɛkyerɛ sɛdeɛ nsɛm a ɛfiri mu ba no trɛ wɔ boɔ a wɔhwɛ kwan ho. Ɛso ma nɔma baako bɛt, ɛsua ma sika pɛ bɛt.Kenkan ne nyinaa → sua: bɛt sika no kɔ soro bere a yɛredi nkonim nko ara, na ɛmmɔ ho mmienu da.
Deɛ agorɔ bere no kyerɛ
Oscar’s Grind yɛ nhyehyɛe a obi a na ɔte afoforɔ no ase na ɔyɛeɛ. Ɔbota biara nni mu, bɛt sika no kɔ soro kakra pɛ, na ɛma nkonim nketewa ntoatoasoɔ tenten. Ne boɔ ne bere: kyinhyia mua bi tumi kɔ kyinhyia aduanan, na kyɛfa baako mfasoɔ a ɛba awieeɛ no, wɔde dwetire so tewsikaDwetire so tewSɛdeɛ agorɔ dwetire tew firi ne soro pɛɛ kɔ fam akyire wɔ agorɔ bere baako mu. Dwetire so tew a ɛsen biara ne deɛ ɛso yɛ kɛseɛ sene biara.Kenkan ne nyinaa → a ɛso sen no mprɛ aduonu na ɛtɔeɛ. Ahwereɛ a wɔhwɛ kwan wɔ dɔla biara a wode to bɛt so yɛ 2.70%, na ɔbrɛ no de dɔla pii ka ho.
Nsɛmmisa
Craps agorɔfoɔ bi a Allan Wilson kaa ne ho asɛm wɔ The Casino Gambler’s Guide (1965) mu. Nhyehyɛe no ani akyɛ sen din no.
Ɛkyerɛ sɛ deɛ ɛbɛba wo so no bɛbɛn deɛ wɔhwɛ kwan no. Deɛ wɔhwɛ kwan no yɛ ahwereɛ. Nsakraeɛ a ɛsua ye sɛ wopɛ boɔ a wotumi hunu ansa ama anwummerɛ bi, na ɛnye sɛ wopɛ hokwan sɛ wobɛdi nkonim kɛseɛ.
Wo agorɔ dwetiresikaAgorɔ dwetireSika a woayi asie nyinaa ama agorɔ. Agorɔ dwetire so hwɛ ne sɛ wobɛsi gyinaeɛ wɔ dodoɔ a wode bɛto asiane mu wɔ bɛt biara ne agorɔ bere biara mu.Kenkan ne nyinaa → anaa wo boasetɔ. Nhyehyɛe no nni gyae mmara biara; ɛsɛ sɛ agorɔfoɔ no ankasa de baako ba.
Serew kakra

Ɔkwan a ɛyɛ brɛoo sen biara a wobɛfa so ahwere 2.70%. Ɛyɛ dinn sen biara nso.
Nsɛm fibea
- Wilson, A. The Casino Gambler’s Guide.
- Ethier, S. N. The Doctrine of Chances: Probabilistic Aspects of Gambling.