(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
This puzzle may have been completed in the wee hours of the morning, but you’ll want to be fully awake to survive this Killer Sudoku.

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or solve online (using SudokuPad)

Theme: Sleepy Time Time

Author/Opus: This is the 135th 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, the sum of the numbers in each cage must equal the value given in the upper-left corner of that cage. Numbers cannot repeat inside a cage.

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

Thomas Hits the GAS (highlight to view): 3:20, 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; solving video with explanation to be added later from GAS team.

Note: Follow this link for more Killer Sudoku and this link for classic Sudoku. More Killer Sudoku puzzles can be found in Killer Sudoku by Serkan Yürekli.

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.)
Numeral diffusion occurs gradually in this Slow Thermo-Sudoku.

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or solve online (using SudokuPad)

Theme: Thermodynamic Disequilibrium

Author/Opus: This is the 134th 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). Some thermometer shapes are in the grid; numbers must either increase or stay the same in each cell going from the round bulb to the flat end. (For instance, a thermometer might contain the sequence 233577888 in that order.)

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 5:00; One party hat (🥳): 12:00. All other solvers earn a 🦕: Yuppie Yunmenglong.

Thomas Hits the GAS (highlight to view): 1:29, 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; solving video with explanation to be added later from GAS team.

Note: Follow this link for more Thermo-Sudoku puzzles. If you are new to this puzzle type, here are our easiest Thermo-Sudoku to get started on. More Thermo-Sudoku puzzles can be found in these books in our e-store. Also, visit this page to purchase all of the puzzles from the 16th World Sudoku Championship including some Thermo-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.)
Sometimes a good old-fashioned PB&J hits the spot. As a toddler, my wife actually ate PB&Js — with a side of grapes and cheese puffs — every. Single. Day. If peanut butter and jelly sounds good to you right about now, then it’s time to gobble up this Sandwich Sudoku.

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or solve online (using SudokuPad)

Theme: Peanut Butter Jelly Time

Author/Opus: This is the 133rd 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 value outside of the grid is a sandwich clue — it tells you the sum of the digits between the 1 and the 9 in that row or column, not including the 1 and 9 themselves.

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 10:00; One party hat (🥳): 20:00. All other solvers earn a 🦕: Xylophonic Xianshanosaurus.

Thomas Hits the GAS (highlight to view): 3:08, 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; 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.)
If you, like a fellow GAS setter, have ever pined for two more givens, this Quadruples Sudoku will give you precisely what you wished for.

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or solve online (using SudokuPad)

Theme: For Two Givens More

Author/Opus: This is the 132nd 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 white circles must appear in at least one of the four surrounding cells.

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

Thomas Hits the GAS (highlight to view): 2:42, 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; 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.)
Can you weave together these strands of numbers to complete today’s Sudoku?

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or solve online (using SudokuPad)

Theme: Stranded

Author/Opus: This is the 131st 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).

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 4:30; One party hat (🥳): 10:00. All other solvers earn a 🦕: Vociferous Volgatitan.

Thomas Hits the GAS (highlight to view): 1:34, 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; solving video with explanation to be added later from GAS team.

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 Sudoku including variations can be found in these books in our e-store. Also, visit this page to purchase all of the puzzles from the 16th World Sudoku Championship including classic 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.)
Basketball season may be over, but you can still take a shot at this Even/Odd Sudoku.

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or solve online (using SudokuPad)

Theme: The Parity Stripe

Author/Opus: This is the 130th 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 with a square contain an even number; cells with a circle contain an odd number.

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

Thomas Hits the GAS (highlight to view): 3:09, 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; solving video with explanation to be added later from GAS team.

Note: Follow this link for more Even/Odd Sudoku puzzles. If you are new to this puzzle type, here are our easiest Even/Odd Sudoku to get started on. More Even/Odd Sudoku 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.)
Somewhere over the rainbow lies a solution to this Odd-Even-Big-Small Sudoku.

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or solve online (using SudokuPad)

Theme: Rainbowy Fun

Author/Opus: This is the 129th puzzle from Philip Newman, part of the Genuinely Approachable Sudoku (GAS) team.

Rules: Standard Sudoku rules (insert a number from 1 to 8 into each cell so that no number repeats in any row, column, or bold region). Clues outside the grid give the nature of the first two cells seen from the direction of the clue as follows:
O for Odd = (1,3,5,7};
E for Even = {2,4,6,8};
B for Big = {5,6,7,8};
S for Small = {1,2,3,4}.

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 6:00; One party hat (🥳): 11:33. All other solvers earn a 🦕: Telekinetic Tiamat.

Thomas Hits the GAS (highlight to view): 1:33, 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; 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.)
The odds and evens along the given lines are not even Stevens in this Odd/Even Bridge Sudoku.

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or solve online (using SudokuPad)
Bill Murphy has provided an example 6×6 version, which you can solve online as a warm-up.

Theme: Abridged

Author/Opus: This is the 128th 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). Each line connects two circles; one circle contains an odd digit and the other contains an even digit. The odd digit indicates the total number of odd digits along the line (not including itself); the even digit indicates the total number of even digits along the line (not including itself). Note: Some circles are connected to multiple lines; they indicate the number of odd/even digits along each line individually.

See also this example:

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 8:24; One party hat (🥳): 15:37. All other solvers earn a 🦕: Sesquipedalian Spinophorosaurus.

Thomas Hits the GAS (highlight to view): 3:27, 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; 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.)
Experience the thrill of competing in the World Krop 2026 in this Kropki Sudoku.

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or solve online (using SudokuPad)

Theme: World Krop 2026

Author/Opus: This is the 127th 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 (🎩🥳): 8:00; One party hat (🥳): 15:00. All other solvers earn a 🦕: Rhapsodic Rhoetosaurus.

Thomas Hits the GAS (highlight to view): 3:44, 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; 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.)
🎵 Oh Mr. Sum, Sum, Mr. Golden Sum, please add up for me in this Arrow Sudoku! 🎵 (And kindly peek out from behind the clouds in the harder Partly Summy bonus version.)

PDF

or solve online (using SudokuPad)
or for the harder original version see this PDF or this digital solving link

Theme: Sumbeams

Author/Opus: This is the 126th 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 🦕: Quibbling Quaesitosaurus.

Thomas Hits the GAS (highlight to view): 2:23 (or 4:12 on the harder version solved first), with SudokuPad replay file or harder version 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 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.