Sudoku

Daily Observer (Jamaica) - - ENTERTAINMENT -

A sudoku puzzle con­sists of a 9 x 9 square grid sub­di­vided into nine 3 x 3 boxes. Some of the squares con­tain num­bers. The ob­ject is to fill in the re­main­ing squares so that ev­ery row, ev­ery col­umn, and ev­ery 3 x 3 box con­tains each of the num­bers from 1 to 9 ex­actly once. Solv­ing a sudoku puzzle in­volves pure logic. No guess­work is needed — or even de­sir­able. Getting started in­volves mas­ter­ing just a few sim­ple tech­niques.

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