(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
This antisymmetric pattern must hide some matter and anti-matter tricks within it given how the black and white dots work together.

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Theme: Interacting Galopkis

Author/Opus: This is the 53rd 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). 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. Pairs of cells without circles can have any relationship.

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

Thomas Hits the GAS (highlight to view): 3:41, 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.)
Happy Halloween! Celebrate with this Pompoen-shaped Sudoku from Philip Newman that might have a lot of tricks before you find any treats.

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Theme: Halloweenpompoen

Author/Opus: This is the 52nd 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). Numbers in cells directly connected on an orange line must differ by at least 4.

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 9:00; One party hat (🥳): 18:00. All other solvers earn a 🦕: Monstrous Moshisaurus.

Thomas Hits the GAS (highlight to view): 5:56, but solved in Hard Mode without the center 5 as in this 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; solving video with explanation to be added later 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.)
Philip brings another two-variation Sudoku with this Fortress (gray cells larger than surrounding white cells) and XVXV Pairs (5/10/15 edge sums) challenge. It should make you go “?” for sure, but “Will It GAS?”

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Theme: Will It GAS?

Author/Opus: This is the 51st 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). A number in a gray cell must be larger than any number in an adjacent white cell that shares an edge. (To assist solvers, this is shown like a greater than/less than shape in how the gray cells are drawn.) Also, whenever a V, X, or XV reflecting the numbers 5, 10, or 15 in Roman numerals, is placed on the edge between cells, the numbers in the two adjacent cells must sum to exactly 5, 10, or 15. (Pairs of cells without a V, X or XV can have any sum value.)

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:30; One party hat (🥳): 16:00. All other solvers earn a 🦕: Protective Punatitan.

Thomas Hits the GAS (highlight to view): 4:16, 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.)
Philip closes the month out with some Sudoku with multiple rule sets. In today’s GAS he combines Anti-King and Consecutive Pairs ideas to make a singularly challenging puzzle.

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Theme: Line of Succession

Author/Opus: This is the 50th 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). Also, cells sharing a corner cannot contain the same number (as if adding a chess king’s move constraint to each cell). Also, if a white circle is given between two adjacent cells, then the two numbers in those cells must differ by 1. Pairs of cells without circles can have any relationship.

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

Thomas Hits the GAS (highlight to view): 2:17, 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.)
Can you work out a path of logic around this large German Whispers shape?

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Theme: Cubist Phase

Author/Opus: This is the 49th 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). Numbers in cells directly connected on a green line must differ by at least 5.

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 8:00; One party hat (🥳): 18:00. All other solvers earn a 🦕: Calm Cathetosaurus.

Thomas Hits the GAS (highlight to view): 4:38, 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.)
There will be no king’s moves in this Sudoku, so sayeth the rules. What this means is a number cannot share a corner with itself (in addition to all the regular Sudoku rules), ensuring things are more spread out.

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or solve online (using SudokuPad)

Theme: Chess729

Author/Opus: This is the 48th 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). Also, cells sharing a corner cannot contain the same number (as if adding a chess king’s move constraint to each cell).

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 8:00; One party hat (🥳): 17:00. All other solvers earn a 🦕: Crowned Campylodon.

Thomas Hits the GAS (highlight to view): 2:51, 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 a familiar pattern pops up again from Philip but with consecutive Renban sets serving as the glue this time for an approachable yet somewhat challenging grid.

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Theme: Consfounded

Author/Opus: This is the 47th 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). Numbers along each line must form a non-repeating consecutive set, in any order. (For example, a 4-cell Renban line could be 4352, but not 5679 or 2312.)

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

Thomas Hits the GAS (highlight to view): 3:18, 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 Genuinely Approachable Sudoku has a set of intersecting arrows that themselves look to form intersecting shapes. Can you get all the logic to come together to find the one solution?

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Theme: Sumrounded

Author/Opus: This is the 46th puzzle from Philip Newman, part of the Genuinely Approachable Sudoku (GAS) team.

Rules: Standard Arrow 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 arrow shapes are in the grid; the sum of the numbers along the path of each arrow must equal the number in the circled cell. Numbers can repeat within an arrow shape.

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

Thomas Hits the GAS (highlight to view): 2:28, 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 more Arrow Sudoku. If you are new to this puzzle type, here are our easiest Arrow Sudoku to get started on. More Arrow Sudoku puzzles can be found in these books in our e-store.

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.)
Philip’s 1-8 diagonal pattern shows up again today, now with a challenging set of Region Sum Lines to figure out to complete the rest of the grid.

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or solve online (using SudokuPad)

Theme: Professor Calculus

Author/Opus: This is the 45th 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). Along each line, the numbers in every region it passes through have the same sum. (In this puzzle, for example, R1C2 + R2C2 + R3C2 = R4C2 + R4C1 + R5C1 + R6C1 + R6C2.)

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 8:00; One party hat (🥳): 20:00. All other solvers earn a 🦕: Yung Yunmenglong.

Thomas Hits the GAS (highlight to view): 3:39, 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.)
Philip brings another variation to this common grid pattern, breaking the apparent symmetry with some Factor Lines. Can you find the unique solution?

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Theme: Factor Fiction

Author/Opus: This is the 44th 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). For every pair of adjacent values connected by a line, one number is a multiple or a factor of the other. (For example, if R4C1 were 3, then R4C2 which is connected to R4C1 could be 1, 6, or 9, because 1 is a factor of 3, and 6 and 9 are multiples of 3. In this specific grid, it is not possible for a number to be adjacent to itself from Sudoku rules.)

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:30; One party hat (🥳): 16:00. All other solvers earn a 🦕: Boding Baurutitan.

Thomas Hits the GAS (highlight to view): 3:13, 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.