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Isinyathelo 24 · Okwengcweti

Hidden Quad (ezine ezifihlekile): liyini leli qhinga? Indlela yokuxazulula i-Killer Sudoku

Ngamafuphi

Uma izinombolo ezine zingangena kuphela ezikweleni ezine ezifanayo eqenjini, ungasusa zonke ezinye izinombolo ezingenzeka kulezo zikwele ezine.

Liyini leli qhinga

Kufana ne-Hidden Pair ne-Hidden Triple, kodwa ngezinombolo ezine. Eqenjini, izinombolo ezine zingangena kuphela ezikweleni ezine ezifanayo.

Lezo zikwele kumele zibe nalezo zinombolo, ngakho susa zonke ezinye izinombolo ezingenzeka kuzo.

Ungalibona kanjani

Qoqa izinombolo ezinezindawo ezimbalwa, bese ufuna ezine ezihlanganyela izikwele ezine ezifanayo.

Isibonelo

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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.

Ebhokisini 7, izinombolo 1, 3, 7 no-9 zingangena kuphela ezikweleni ezine M7K2, M7K3, M8K2 no-M9K3. Lezo zikwele kumele zibe nalezo zinombolo, ngakho susa ezinye izinombolo ezingenzeka kuzo (2 no-8).

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