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Theme: H (patron puzzle created for Paul Hlebowitsh)

Author/Opus: This is the 80th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Arrow Sudoku rules. Also, standard Thermo-Sudoku rules.

Answer String: Enter the 4th row from left to right, followed by a comma, followed by the 9th row from left to right.

Time Standards (highlight to view): Grandmaster = 5:15, Master = 7:45, Expert = 15:30

Solution: PDF

Note: Follow this link for more Arrow Sudoku. Follow this link for more Thermo-Sudoku puzzles. More Arrow and Thermo-Sudoku puzzles can be found in The Art of Sudoku 2.

• Carl W says:

Nice puzzle, Prasanna. As usual with sudoku, I struggled quite a bit and finished after a little over an hour.

Note: The rules originally posted above say “Standard Arrow-Sudoku rules” where they should obviously say “A combination of Arrow Sudou and Thermo-Sudoku rules”.

• skynet says:

6:53..Nice

• Chris Green says:

Suprising use of symmetry in the layout. Enjoyable puzzle.

• Drella says:

What a beautiful puzzle. I enjoyed solving this very much

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