Sudoku by Thomas Snyder

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Sudoku by Thomas Snyder


or solve online (using our beta test of Penpa-Edit tools)

Theme: 2×3×4

Author/Opus: This is the 390th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Sudoku rules.

Difficulty: 4 stars

Time Standards (highlight to view): Grandmaster = 7:30, Master = 13:30, Expert = 27:00

Solution: PDF; a solution video is also available here.

Note: Follow this link for other classic Sudoku. If you are new to this puzzle type, here are our easiest Sudoku to get started on. More classic Sudoku puzzles can be found in The Art of Sudoku, The Art of Sudoku 2 and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.

  • sudgy says:

    I normally don’t like Sudokus (especially these hard ones), but I did really like gung qrqhpgvba jvgu gur gjbf va gur gbc yrsg. V’ir arire frra gung orsber.

    • Avatar photo drsudoku says:

      Thanks Sudgy — that was the key part of the solve I wanted people to discover, although it was a hard thing to telegraph so I was not how many people would find it.

  • nkm says:

    Fun puzzle! Proud that I found the sticking point from the solution video, though it still took me a while after that to find what it had unlocked

  • skynet says:

    11:17… Brilliant classic sudoku !…Really had some very narrow deductions

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