Isinyathelo 18 · Okwengcweti
Skyscraper (izakhiwo ezinde): liyini leli qhinga? Indlela yokuxazulula i-Killer Sudoku
Uma inombolo inezindawo ezimbili kuphela emugqeni ngamunye kwemibili, futhi isiphetho esisodwa salowo nalowo siqondene ekholomini efanayo, ungasusa leyo nombolo ezikweleni ezibona zombili iziphetho ezisele.
Liyini leli qhinga
Cabanga ngenombolo eyodwa (isib. u-5). Imigqa emibili inezindawo ezimbili kuphela zika-5 lowo nalowo, futhi isiphetho esisodwa salowo nalowo siqondene ekholomini efanayo — njengezakhiwo ezimbili ezimi eceleni komunye nomunye.
Izikwele ezimbili eziqondene zisekholomini eyodwa, ngakho angeke zombili zibe ngu-5. Lokho kusho ukuthi esinye seziphetho ezisele (izimbombo zophahla) kumele sibe ngu-5.
Noma yisiphi isikwele esibona zombili izimbombo angeke sibe ngu-5.
Ungalibona kanjani
Khetha inombolo eyodwa bese uthola imigqa emibili (noma amakholomu) lapho inezindawo ezimbili ncamashí. Uma isiphetho esisodwa kuphela siqondene, kuyi-Skyscraper.
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.
Cabanga ngo-7 kuphela. Kokubili emugqeni 2 nasemugqeni 8, u-7 unezindawo ezimbili kuphela. Izikwele M2K8 no-M8K8 ziqondene, ngakho angeke zombili zibe ngu-7. Lokho kusho ukuthi esinye sezikwele M2K7 no-M8K9 kumele sibe ngu-7. Noma yisiphi isikwele esibona zombili (M3K9 no-M7K7) angeke sibe ngu-7.