The Borneo Post (Sabah) - - CARTOONS & TV GUIDE -

Put sim­ply, Su­doku (or 'Su Doku', or 'Su-doku') is a num­ber-place­ment puz­zle based on a square grid, typ­i­cally 9 squares by 9, giv­ing 81 squares in all. The puz­zle is fur­ther di­vided (by bold grid­lines) into 9 boxes or 're­gions', each a square mea­sur­ing 3 squares by 3.

Fig­ures from 1 to 9 (known as 'givens') are al­ready in­serted in some of the squares; to com­plete the puz­zle, a player must insert the miss­ing num­bers so that each row, each col­umn, and each re­gion con­tains the num­bers 1 to 9 once and once only, with­out any re­peats.

The level of dif­fi­culty de­pends upon the num­ber of givens in any puz­zle, and the ease with which a player can com­pute the miss­ing num­bers by the use of logic.

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