Shade some cells such that no unshaded digit is repeated in any row/column. Shaded cells cannot touch orthogonally. All unshaded cells form an orthogonally connected region.
Enjoy!
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Solution code: Digits in shaded cells from left to right in rows 2, 4, 6 and 8.
on 28. July 2021, 17:50 by Mark Sweep
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