Wellness
Observer sudoku
![Observer sudoku Observer sudoku](https://i.guim.co.uk/img/media/6ee2dd93c001504f30a57ecb7bad642e718c7bb5/0_0_517_517/master/517.jpg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdGctZGVmYXVsdC5wbmc&enable=upscale&s=a00bb07f8729675a589953bd20c125cf)
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Fill the network using the numbers from 1 to 9. Each number should appear only once in each row, column and square 3 x 3.
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Fill the network using the numbers from 1 to 9. Each number should appear only once in each row, column and square 3 x 3.