(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
Today we have another trip to the Borderland with Bill showing a puzzle where each diamond indicates the size of an odd or even group of numbers.

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or solve online (using SudokuPad)

Author/Opus: This is the 103rd 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). A cell containing a diamond is part of a group of numbers of the same parity connected by edges, and the number inside the diamond indicates how many numbers of the same parity (including itself) form this group. (For example, a diamond containing a 2 must be connected by its edges to only one other even number besides itself; that is, all other edge neighbors of these two numbers must be odd.)

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 9:00; One party hat (🥳): 17:00. All other solvers earn a 🦕: Handsome Jaxartosaurus.

Thomas Hits the GAS (highlight to view): 4:33, 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 less common variations of Sudoku.

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.)
In a (45-degree) twist from regular Consecutive-style puzzles, here the connected cells all sit on a diagonal.

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or solve online (using SudokuPad)

Theme: Free Center

Author/Opus: This is the 102nd 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). Also, numbers adjacent to each other along the gray lines must differ by 1. Numbers may repeat on the gray lines. Diagonally adjacent numbers that do not have a gray line can have any relationship.

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:30; One party hat (🥳): 14:00. All other solvers earn a 🦕: Parallel Pampadromaeus.

Thomas Hits the GAS (highlight to view): 2:48, 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 less common variations of Sudoku.

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.)
In this fresh variation of Sudoku, the numbers in the diamond cells indicate the size of the odd or even group they belong to. Careful counting and shading should get you through to the solution.

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or solve online (using SudokuPad)

Theme: On the Border

Author/Opus: This is the 123rd puzzle from Clover, 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). A cell containing a diamond is part of a group of numbers of the same parity connected by edges, and the number inside the diamond indicates how many numbers of the same parity (including itself) form this group. (For example, a diamond containing a 2 must be connected by its edges to only one other even number besides itself; that is, all other edge neighbors of these two numbers must be odd.)

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 9:00; One party hat (🥳): 17:00. All other solvers earn a 🦕: borderline Bothriospondylus.

Thomas Hits the GAS (highlight to view): 4:19, 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 less common variations of Sudoku.

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.)

As long-time solvers of Genuinely Approachable Sudoku will know, we at GAS, Inc. have a reputation. Of approachable puzzles, bordering on the side of far too generous with givens? Of course. But also a reputation for state-of-the-art security.

Now, more than ever, it is my job as Head of Security to implement cutting-edge artificial intelligence solutions to protect our ever dwendling precious resource: hats. To reassuring our valued solvers that we remain a safe place to hang your hat in these turbulent times, I am proud to invite you to be the first Beta Testers of our new security system. Backed by a powerful LLM trained on the mind of an extinct sauropod, you’ll find our website is more secure than ever.

https://sudokutheory.com/gas/security/captcha.html

GAS – We’re there at the drop of a hat

(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
Unusual solving detected on your account. Please complete this CAPTCHA to continue.

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or solve online (using SudokuPad)

or for a background-free version (once you pass the test): PDF or solve online (using SudokuPad)

Author/Opus: This is the 100th 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). If a white circle is given between two adjacent cells, then the two numbers in those cells must differ by 1. If a black circle is given between two adjacent cells, then the two numbers must have a ratio of 2. Within regions containing a two-wheeled vehicle, all dots are given. (Pairs of cells sharing a border across regions may still differ by 1 or have a ratio of 2.)

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 8:00; One party hat (🥳): 15:00. All other solvers earn a 🦕: Turing Torvosaurus.

Thomas Hits the GAS (highlight to view): 3:33, 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

Note: Follow this link for other less common variations of Sudoku.

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.)
While this Sudoku doesn’t have multiple answers, it does have multiple “clone” regions that have to repeat for the unique answer to be found.

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or solve online (using SudokuPad)

Theme: Legs in a Snare

Author/Opus: This is the 99th 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). Additionally, each connected shape (“clone”) of the same color in the grid must include the same numbers in the same positions with no rotations or reflections. Numbers may repeat within a clone.

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

Thomas Hits the GAS (highlight to view): 1:35, 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

Note: Follow this link for other less common variations of Sudoku.

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 gray cells in this irregular sudoku represent a ninth “no repeats” group. Can you think all the way around this scattered grid to reach the solution?

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or solve online (using SudokuPad)

Theme: Feeling Scattered

Author/Opus: This is the 120th puzzle from Clover, 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). Also, the gray cells must contain each of the numbers from 1 to 9 exactly once.

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:00; One party hat (🥳): 13:00. All other solvers earn a 🦕: overwhelmed Ozraptor.

Thomas Hits the GAS (highlight to view): 2:09, 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 less common variations of Sudoku.

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.)
Today’s puzzle is something of a twist on the Kropki Pairs variant common in GAS puzzles, but with a negative constraint: there is nowhere to place a white (consecutive) dot in the grid!

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or solve online (using SudokuPad)

Theme: Partial Pairs

Author/Opus: This is the 101st 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). Also, if a black circle is given between two adjacent cells, then the two numbers must have a ratio of 2. Pairs of cells without circles can have any relationship. (The numbers 1 and 2 can be adjacent if and only if there is a black circle between them.)

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

Thomas Hits the GAS (highlight to view): 2:33, 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 less common variations of Sudoku.

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.)
With two choices for each key sum, can you figure out how to place values all around this Highball Sudoku grid by Bill Murphy?

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or solve online (using SudokuPad)

Author/Opus: This is the 98th 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). Also, the clues outside the grid indicate the sum of either the first and second numbers or the second and third numbers seen from the direction of the clue.

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 8:30; One party hat (🥳): 16:00. All other solvers earn a 🦕: Yuzu Yueosaurus.

Thomas Hits the GAS (highlight to view): 3:06, 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 less common variations of Sudoku.

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.)
What happens when you try to build a fortress outside the grid? Find out in this puzzle where the gray cells must exceed the respective numbers to the top and left.

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Theme: Out in the Cold

Author/Opus: This is the 119th puzzle from Clover, 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). Also, when a number appears in a gray cell, it must be greater than the clue number above its column and the clue number to the left of its row.

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

Thomas Hits the GAS (highlight to view): 1:50, 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 less common variations of Sudoku.

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.