a source familiar with the matter on Nostr: Here's a good example of a sudoku technique I use which I haven't seen discussed. If ...
Here's a good example of a sudoku technique I use which I haven't seen discussed.
If the highlighted square at the bottom was a 6 or a 9, it would make it so the 6s and 9s in the bottom two squares could be switched around and still solve the puzzle.
Because a valid sudoku puzzle has only one solution, the highlighted square must be a 4.
Published at
2026-01-05 04:02:53 UTCEvent JSON
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"content": "Here's a good example of a sudoku technique I use which I haven't seen discussed.\n\nIf the highlighted square at the bottom was a 6 or a 9, it would make it so the 6s and 9s in the bottom two squares could be switched around and still solve the puzzle.\n\nBecause a valid sudoku puzzle has only one solution, the highlighted square must be a 4.\n\nhttps://cdn.nostrcheck.me/f5b55f6b44b8997b2b6e8469a6a57f8d3f3b2ef27023543445c40ecec485ee64/751b5b47a6861660becac6b50a20546c4e119891b8ac6d9fd3f5c05a9396943d.webp",
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