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.)
Contrary to Russell’s paradox, the set of all sets does exist — albeit in the form of this Killer Sudoku by Bill Murphy.

PDF

or solve online (using SudokuPad)

Theme: Set of All Sets

Author/Opus: This is the 152nd 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 (🎩🥳): 7:00; One party hat (🥳): 13:00. All other solvers earn a 🦕: Single Digit Stenopelix .

Thomas Hits the GAS (highlight to view): 2:24, 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 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.)
It’s a beautiful day in this Neighbors Sudoku. Please help these friendly pairs of digits meet up in their respective columns and rows.

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or solve online (using SudokuPad)

Theme: Won’t You Be…

Author/Opus: This is the 171st 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). Outside clues indicate pairs of numbers which must appear immediately adjacent to each other (in either order) within that row or column. For instance, in the first column, 2 and 3 must be immediately adjacent.

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

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

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.)
You may be able to hit two birds with one stone, but can you hit multiple arrows with one target? Test your projectile prowess with this Arrow Sudoku.

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or solve online (using SudokuPad)

Theme: Hit Two Arrows with One Target

Author/Opus: This is the 149th 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 (🎩🥳): 6:30; One party hat (🥳): 14:00. All other solvers earn a 🦕: Neon Neosodon.

Thomas Hits the GAS (highlight to view): 2:56, 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 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.)
With so many L Tetrominoes to fill in, can you figure out how each shape fits into the bigger Sudoku puzzle?

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or solve online (using SudokuPad)

Author/Opus: This is the 151st 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, there are some numbered shapes that must be put into the grid. In this puzzle, shapes cannot be rotated or reflected.

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

Thomas Hits the GAS (highlight to view): 2:46, 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.)
These two variants, Consecutive Pairs and Killer, may form a dangerous Sudoku combo for you to solve.

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or solve online (using SudokuPad)

Author/Opus: This is the 170th 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). 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. 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 (🥳): 11:00. All other solvers earn a 🦕: murderous Melanorosaurus.

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

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.)
You’ll need to read between, along, and outside the lines to infer the solution to this Between Lines Sudoku.

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or solve online (using SudokuPad)

Theme: Between, the Lines

Author/Opus: This is the 148th 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, numbers along each line must have values strictly between the values of the two numbers in the circle cells bounding that particular line.

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

Thomas Hits the GAS (highlight to view): 2:55, 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.)
There’s only one “regular” region shape at the center of this fun grid by Bill Murphy. Can you work out how all the other shapes make the solution dance?

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or solve online (using SudokuPad)

Theme: Let’s Dance

Author/Opus: This is the 150th 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).

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

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

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.)
Here we go ’round again with a set of Little Killer clues that mark important sums to figure out.

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or solve online (using SudokuPad)

Theme: Here I Go ‘Round Again

Author/Opus: This is the 169th 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). Numbers along indicated diagonals must sum to the given total outside the grid.

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

Thomas Hits the GAS (highlight to view): 2:16, 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

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.)
Numbers 3 through 6 are trapped by higher digits on all orthogonally placed sides. Rescue these numbers in distress by storming this Fortress Sudoku.

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or solve online (using SudokuPad)

Theme: Boxed In

Author/Opus: This is the 147th 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.)

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

Thomas Hits the GAS (highlight to view): 3:59, 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

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 we have not one but two layers of Sandwich Sudoku delightfulness for you.

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or solve online (using SudokuPad)

Author/Opus: This is the 149th 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). Clues outside the grid give “sandwich” sums for all numbers in the cells between the 1, 5, and 9 in that row from left to right or in that column from top to bottom. These values are given in order, with the first sandwich sum referencing the cells between the first value from {1,5,9} and the second value from {1,5,9}, and the second sandwich sum referencing the cells between that second value and the last value from {1,5,9}. (For example, in row 9, the cells between 9 and 1 add to 15 and the cells between 1 and 5 add to 6 from the order of the outside clues and the 1, 5, and 9 in that row.)

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

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

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.