Isinyathelo 21 · Okwengcweti
Empty Rectangle (unxande ongenalutho): liyini leli qhinga? Indlela yokuxazulula i-Killer Sudoku
Uma izindawo zenombolo ebhokisini zingena esiphambanweni somugqa owodwa nekholomu eyodwa, ungakuhlanganisa nomugqa noma ikholomu lapho leyo nombolo inezindawo ezimbili kuphela, ukuze uyisuse esikweleni esithile.
Liyini leli qhinga
Sebenzisa inombolo eyodwa (isib. u-2) uma izindawo zayo ebhokisini zingena esiphambanweni: umugqa owodwa nekholomu eyodwa. Okunye kwebhokisi akuna-2 — yingakho kuthiwa unxande ongenalutho.
U-2 waleso bhokisi kumele abe semugqeni wesiphambano noma ekholomini yaso. Kuhlanganise nekholomu (noma umugqa) lapho u-2 engangena ezindaweni ezimbili kuphela, uzothola isikwele esingeke sibe ngu-2 noma kunjani.
Ungalibona kanjani
Khetha inombolo eyodwa, uthole ibhokisi lapho izindawo zayo zisemugqeni owodwa nasekholomini eyodwa kuphela, bese ubheka kuleyo migqa ukuthi ikhona yini ikholomu (noma umugqa) enezindawo ezimbili kuphela.
Isibonelo
Izindawo ezizungezwe ulayini wamachashazi yizibaya, isamba sisekhoneni eliphezulu kwesokunxele. Izikwele eziphuzi zikhombisa ukuthi ubheke kuphi, ezisawolintshi ziyisizathu, izinombolo ezibomvu yizinombolo ezingenzeka ongazisusa, kanti inombolo eluhlaza okotshani iyimpendulo.
U-5 webhokisi 5 kumele abe sekholomini 5 noma semugqeni 6. Emugqeni 9, u-5 angangena kuphela esikweleni M9K5 noma M9K8. Uma isikwele M9K5 singu-5, u-5 webhokisi 5 ugcina semugqeni 6 futhi uvimba isikwele M6K8. Uma isikwele M9K8 singu-5, sivimba isikwele M6K8 ngqo. Noma kunjani, isikwele M6K8 angeke sibe ngu-5.