The grid must be filled using the numbers from 1 to 9. Each number must appear once, and once only, in each row, column or 3×3 square.

Rhaid llenwi’r grid efo’r rhifau rhwng 1 a 9. Rhaid i bob rhif ymddangos unwaith, ac unwaith yn unig, mewn unrhyw res, colofn neu sgwâr 3×3.


RESETAILDDECHRAU
CHECKGWIRIO
PRINTARGRAFFU