(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
After showing us a Superconsecutive puzzle not too long ago, Bill may be out of consecutive energy because there are no consecutive numbers in any adjacent cells in this puzzle.

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or solve online (using SudokuPad)

Theme: Thinking Inside and Outside of the Box

Author/Opus: This is the 113rd puzzle from Bill Murphy, part of the Genuinely Approachable Sudoku (GAS) team.

Rules: Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region. No two orthogonally adjacent cells can be consecutive (i.e., differ by 1).

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 6:00; One party hat (🥳): 11:00. All other solvers earn a 🦕: Sentimental Seitaad.

Thomas Hits the GAS (highlight to view): 1:58, with SudokuPad replay file shared as a download for now (requires loading via settings menu with improvements expected before people should use this regularly).

Solution: PDF and solving video with explanation from GAS team.

Note: Follow this link for other Consecutive Sudoku. If you are new to this puzzle type, here are our easiest Consecutive Sudoku to get started on.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Daily GAS discussion post on the GMPuzzles Discord. Not a member of the Discord? Click this link for basic access.

(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
The Advent calendar continues with an anti constraint that will separate the solvers who read the instructions from those who jump right in.

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or solve online (using SudokuPad)

Theme: Keep ‘Em Separated

Author/Opus: This is the 68th puzzle from Philip Newman, part of the Genuinely Approachable Sudoku (GAS) team.

Rules: Standard Sudoku rules (Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region). No two orthogonally adjacent cells can be consecutive (i.e., differ by 1).

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 9:00; One party hat (🥳): 20:00. All other solvers earn a 🦕: Misnamed Megadactylus.

Thomas Hits the GAS (highlight to view): 2:21, with SudokuPad replay file shared as a download for now (requires loading via settings menu with improvements expected before people should use this regularly).

Solution: PDF and solving video with explanation from GAS team.

Note: Follow this link for other Consecutive Sudoku. If you are new to this puzzle type, here are our easiest Consecutive Sudoku to get started on.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Daily GAS discussion post on the GMPuzzles Discord. Not a member of the Discord? Click this link for basic access.

(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
Another anti constraint appears in Bill Murphy’s Nonconsecutive Sudoku. Can you again you the outside to work your way in?

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or solve online (using SudokuPad)

Theme: Space Song

Author/Opus: This is the 35th puzzle from Bill Murphy, part of the Genuinely Approachable Sudoku (GAS) team.

Rules: Standard Sudoku rules (Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region). No two orthogonally adjacent cells can be consecutive (i.e., differ by 1).

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 6:30; One party hat (🥳): 12:00. All other solvers earn a 🦕: Once Twice Melanorosaurus.

Thomas Hits the GAS (highlight to view): 2:32, with SudokuPad replay file shared as a download for now (requires loading via settings menu with improvements expected before people should use this regularly).

Solution: PDF and solving video with explanation from GAS team.

Note: Follow this link for other Consecutive Sudoku. If you are new to this puzzle type, here are our easiest Consecutive Sudoku to get started on.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Daily GAS discussion post on the GMPuzzles Discord. Not a member of the Discord? Click this link for basic access.

(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
Literally no one is here to get this Sudoku started, so you’ll have nine to place before reaching the solution to this Nonconsecutive Sudoku by Philip Newman.

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or solve online (using SudokuPad)

Theme: Literally No One

Author/Opus: This is the 14th puzzle from Philip Newman, part of the Genuinely Approachable Sudoku (GAS) team.

Rules: Standard Sudoku rules (Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region). No two orthogonally adjacent cells can be consecutive (i.e., differ by 1).

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:30; One party hat (🥳): 15:00. All other solvers earn a 🦕: Conniving Cienciargentina.

Thomas Hits the GAS (highlight to view): 3:22, with SudokuPad replay file shared as a download for now (requires loading via settings menu with improvements expected before people should use this regularly).

Solution: PDF and solving video with explanation from GAS team.

Note: Follow this link for other Consecutive Sudoku. If you are new to this puzzle type, here are our easiest Consecutive Sudoku to get started on.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Daily GAS discussion post on the GMPuzzles Discord. Not a member of the Discord? Click this link for basic access.

(This is a bonus “second” puzzle that is not connected to the usual Monday-Saturday week difficulty.)

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

Author/Opus: This is the 213th puzzle from our contributing puzzlemaster Murat Can Tonta.

Rules: Standard Consecutive Sudoku rules. Since there are no bars in this grid, this should be considered a Nonconsecutive Sudoku.

Difficulty: 3 stars

Time Standards (highlight to view): Grandmaster = 3:00, Master = 6:30, Expert = 13:00

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

Note: Follow this link for other Consecutive Sudoku. If you are new to this puzzle type, here are our easiest Consecutive Sudoku to get started on.

Here are our best Sudoku puzzles of 2018, selected from the 42 web posts in this category:

Visually distinctive puzzles were an important part of the top Sudoku from 2018. While posted in our last week of 2018, this Christmas Tree Sudoku by Thomas Snyder (that combines Sudoku with the popular Star Battle style) got a lot of FAVE votes in a rather short time.

While we have been avoiding “Pi” puzzles for a long time here — some of us assert there is a more fundamental mathematical constant around 6.283 — having some new editors involved on the web led to our first full week of “Pi” puzzles in March and some others later in the year. Two Pi sudoku stood out including this Consecutive Sudoku from guest contributor Fatih Kamer Anda.

Another prize goes out to an Arrow Sudoku from Murat Can Tonta.

The best sudoku of 2018 goes to another Pi-themed puzzle, a Thermo-Sudoku by Serkan Yürekli with an incredibly elegant arrangement of its givens that still leads to a fundamentally interesting logical solve.

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

Theme: Pi

Author/Opus: This is the 1st puzzle from guest contributor Fatih Kamer Anda.

Rules: Standard Consecutive Sudoku rules. Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region). Some bars are in the grid; any two adjacent digits separated by a bar must be consecutive (i.e., differ by 1). All adjacent digits not separated by a bar cannot be consecutive.

Answer String: Enter the 6th row from left to right, followed by a comma, followed by the 9th column from top to bottom.

Time Standards (highlight to view): Grandmaster = 4:30, Master = 10:00, Expert = 20:00

Solution: PDF

Note: Follow this link for other Consecutive Sudoku. If you are new to this puzzle type, here are our easiest Consecutive Sudoku to get started on.

PDF

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

Theme: Even/Odd Diagonals

Author/Opus: This is the 228th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Consecutive Sudoku rules. Since there are no bars in this grid, this should be considered a Nonconsecutive Sudoku.

Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 9th row from left to right.

Time Standards (highlight to view): Grandmaster = 4:45, Master = 8:00, Expert = 16:00

Solution: PDF

Note: Follow this link for other Consecutive Sudoku. If you are new to this puzzle type, here are our easiest Consecutive Sudoku to get started on.

PDF

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

Theme: Fortress

Author/Opus: This is the 4th puzzle from guest contributor Craig Kasper, who has recently started a new blog about puzzles.

Rules: Standard Consecutive Sudoku rules.

Answer String: Enter the 6th row from left to right, followed by a comma, followed by the 6th column from top to bottom.

Time Standards (highlight to view): Grandmaster = 3:15, Master = 4:45, Expert = 9:30

Solution: PDF

Note: Follow this link for other Consecutive Sudoku. If you are new to this puzzle type, here are our easiest Consecutive Sudoku to get started on.

PDF

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

Theme: Primarily logic, with today’s date hidden as well.

Author/Opus: This is the 157th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Consecutive Sudoku rules. Since there are no bars in this grid, this should be considered a Non-Consecutive Sudoku.

Answer String: Enter the 3rd row from left to right, followed by a comma, followed by the 7th row from left to right.

Time Standards (highlight to view): Grandmaster = 4:15, Master = 5:45, Expert = 11:30

Solution: PDF

Note: Follow this link for other Consecutive Sudoku. If you are new to this puzzle type, here are our easiest Consecutive Sudoku to get started on.