Isinyathelo 2 · Okwabaqalayo
Naked Single (inombolo eyodwa kuphela engangena): liyini leli qhinga? Indlela yokuxazulula i-Killer Sudoku
Uma isikwele sisala nenombolo eyodwa kuphela engenzeka ngemva kokubheka umugqa waso, ikholomu yaso, ibhokisi laso nesibaya saso, leyo nombolo iyimpendulo yaso.
Liyini leli qhinga
Khetha isikwele bese ucisha zonke izinombolo esezivele zikhona emugqeni waso, ekholomini yaso nasebhokisini laso. Uma kusala inombolo eyodwa kuphela, leyo iyimpendulo.
Isibonelo: umugqa uno-1 kuya ku-5, ikholomu ino-6 no-7, kanti ibhokisi lino-8. Kungangena u-9 kuphela lapho.
Ungalibona kanjani
Bheka lapho imigqa, amakholomu namabhokisi agcwele kakhulu ehlangana khona. Lezo zikwele ngokuvamile zinezinketho ezimbalwa kakhulu.
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.
Isikwele M7K6 singaba ngu-7 kuphela. Sezisetshenzisiwe: 2, 3, 4, 6, 8 no-9 emugqeni waso; 3, 6 no-8 ekholomini yaso; 1, 3, 5, 6, 8 no-9 ebhokisini laso. Kusukela ku-1 kuya ku-9, kusala u-7 kuphela.
→ Isikwele M7K6 singu-7.