Isinyathelo 14 · Okochwepheshe
Swordfish: liyini leli qhinga? Indlela yokuxazulula i-Killer Sudoku
Uhlobo lwemigqa emithathu lwe-X-Wing: uma izindawo zenombolo emigqeni emithathu zonke ziwela emakholomini amathathu afanayo, ungasusa leyo nombolo kwezinye izikwele zalawo makholomu.
Liyini leli qhinga
I-X-Wing eluliwe yaba yimigqa emithathu. Cabanga ngenombolo eyodwa (isib. u-6).
① Emigqeni emithathu, u-6 ungena ezikweleni ezimbili noma ezintathu kuphela kulowo nalowo.
② Zonke lezo zikwele ziwela emakholomini amathathu afanayo.
Umugqa ngamunye kulemithathu udinga u-6 oyedwa, ngakho o-6 balawo makholomu amathathu basetshenziswa lapha. Susa u-6 kulo lonke elinye ingxenye yalawo makholomu.
Ungalibona kanjani
Khetha inombolo eyodwa, uqoqe imigqa emithathu lapho inezindawo ezimbili noma ezintathu, bese uhlola ukuthi zisebenzisa amakholomu amathathu kuphela yini sekukonke.
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-1 kuphela. Emakholomini 2, 6 no-8, zonke izindawo zika-1 (M7K2, M8K2, M8K6, M9K6, M7K8, M8K8 no-M9K8) zisemigqeni 7, 8 no-9. Ngalinye kulawa maqembu amathathu lidinga u-1 oyedwa, ngakho o-1 bemigqa 7, 8 no-9 basetshenziswa lapha. Ngakho ezinye izikwele zemigqa 7, 8 no-9 (M7K9, M8K9 no-M9K9) angeke zibe ngu-1.