On this site, and with our partners, we showcase “The Art of Puzzles”, with hand-crafted logic puzzles by the best puzzle designers for all who love puzzles. If you’re new to logic games, you might want to start with the daily puzzles we share through partners like LinkedIn (where our founder Thomas Snyder is the Principal Puzzlemaster), including Mini Sudoku (6×6), Patches, Queens, Tango, and Zip.

On this blog we share many other games and a broader range of difficulties. We organize into the categories of Sudoku, Number Placement, Object Placement, Shading, Region Division, and Loop/Path puzzles with tags on each post to find the easiest/hardest within particular styles. There are also many puzzles in our subscriptions and books so check out our Store for more details and to support our puzzlemakers.

New to the site and to logic puzzles besides Sudoku? Here is a web intro to Tapa, a great shading puzzle invented by Serkan Yürekli, our managing editor, with example walkthrough and a curated set of puzzles from our archive. Also check out our books like Intro to GMPuzzles and the Starter Packs for great beginner series.

Since June 2025, we’ve been running the “Twelve Months of Sudoku?” project, where we take a year to see how far we can push the limits of sudoku, with new partners, projects, and different things than we’ve ever tried to do before. This includes:

• The daily Genuinely Approachable Sudoku (GAS) with sudoku variations to keep the puzzle exciting;
• “A Story of Self-setting Sudoku” by Thomas Snyder / Dr. Sudoku, with curious classic Sudoku of various difficulties tied into a story/puzzlehunt-like experience;
• Sudoku-focused YouTube videos including “How to Solve Sudoku Like a World Champion” and shorter stories in the “Today in Sudoku” series. Check out our YouTube channel;
• Other surprises in the future.

If you are a subscriber for any of our seasons since July 2023, please use this page to login and make sure you see all content.

(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
Live, from SudokuCon 2026, it’s a Slow Thermo!

PDF

or solve online (using SudokuPad)

Also enjoy a bonus earlier version of this puzzle that is more difficult: PDF

or solve bonus online (using SudokuPad)

Theme: SudokuCon ’26

Author/Opus: This is the 141st 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 (🎩🥳): 9:00; One party hat (🥳): 20:00. All other solvers earn a 🦕: Fictitious Fushanosaurus.

Thomas Hits the GAS (highlight to view): 2:06, with SudokuPad replay file and 3:42 for bonus with replay as well; shared as a download for now (requires loading via settings menu with improvements expected before people should use this regularly).

Solution: PDF and for bonus; 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.)
Will you get on the same wavelength as the constructor of this Same Sum Sudoku to know the key value used around all gray cells?

PDF

or solve online (using SudokuPad)

Author/Opus: This is the 143rd 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). The numbers orthogonally adjacent to a gray cell add up to a certain sum, and this sum must be the same for all gray cells.

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

Thomas Hits the GAS (highlight to view): 2:00, 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.)
With this third straight Star Product Sudoku from clover! the difficulty will start to multiply a bit; the logic you’ve seen over this past week though should help you get to the solution.

PDF

or solve online (using SudokuPad)

Theme: Starstruck

Author/Opus: This is the 162nd 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, in each row or column with a given clue outside the grid, the value of that clue is the product of all numbers in the starred cells in that row or column.

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

Thomas Hits the GAS (highlight to view): 3:04, 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.)
Philip’s wife: 🎵 Math-y birthday Sudoku! Math-y birthday Sudoku! 🎵 This X-Sums Sudoku quite literally has Philip’s numbers written all over it. Happy 44th, love!

PDF

or solve online (using SudokuPad)

Theme: Birthday Maths

Author/Opus: This is the 140th 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 clues outside the grid indicate the sum of the first X numbers placed in the corresponding direction, where X is equal to the first number placed in that direction (e.g., if R9C2 is 5, then the five numbers in R9C2, R8C2, and on to R5C2 all add up to 26).

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:29; One party hat (🥳): 44:44. All other solvers earn an 🦕: English Europatitan.

Thomas Hits the GAS (highlight to view): 3:25, 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 loops in this puzzle indicate numbers that are pretty close together, just one or two apart. Can you see through all the logic to reach the unique solution?

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or solve online (using SudokuPad)

Author/Opus: This is the 142nd 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). Each pair of adjacent numbers along a pink loop must differ by 1 or 2.

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

Thomas Hits the GAS (highlight to view): 2:38, 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; 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.)
Now it seems the Star Products themselves are multiplying as we have a second version of this variation from clover! just a few days apart. Will today’s be any harder to think through?

PDF

or solve online (using SudokuPad)

Theme: Star-Crossed

Author/Opus: This is the 161st 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, in each row or column with a given clue outside the grid, the value of that clue is the product of all numbers in the starred cells in that row or column.

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

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 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.)
All around this Killer Sudoku are groups shaped like flags. Will you be able to find the solution or will you raise the white flag?

PDF

or solve online (using SudokuPad)

Theme: White Flag

Author/Opus: This is the 141st 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 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 (🎩🥳): 6:00; One party hat (🥳): 12:00. All other solvers earn a 🦕: Numbered Nankangia.

Thomas Hits the GAS (highlight to view): 1:59, 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.)
Not all the regions are measuring up in this Deficit Sudoku by Bill Murphy; avoid repeats, but don’t think about “full sets” in those spaces.

PDF

or solve online (using SudokuPad)

Author/Opus: This is the 140th puzzle from Bill Murphy, part of the Genuinely Approachable Sudoku (GAS) team.

Rules: Standard Deficit Sudoku rules, with numbers from 1-7: Insert a number from 1 to 7 into each cell so that no number repeats in any row or column. Some regions appear with fewer cells than there are numbers in the indicated range. No number repeats in these regions, but not all numbers will appear in each of these regions.

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 5:00; One party hat (🥳): 10:00. All other solvers earn a 🦕: Missing Manidens.

Thomas Hits the GAS (highlight to view): 1:23, 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.)
Today’s Star Product Sudoku will have your thoughts multiplying alongside the standard Sudoku logic.

PDF

or solve online (using SudokuPad)

Theme: Stars and Stripes

Author/Opus: This is the 160th 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, in each row or column with a given clue outside the grid, the value of that clue is the product of all numbers in the starred cells in that row or column.

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

Thomas Hits the GAS (highlight to view): 1:31, 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 track how the numbers fill into the riptides, bringing the solution above the surface to see clearly?

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or solve online (using SudokuPad)

Theme: Riptides

Author/Opus: This is the 139th 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). The shaded regions must also contain 1 to 9 without repeats.

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

Thomas Hits the GAS (highlight to view): 2:19, 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; 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.