(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
If you haven’t tried a 159 (or other Column Indexer) before, you might check out the previous GAS featuring this variant. Today’s offering adds Arrows to the mix!

PDF

or solve online (using SudokuPad)

Author/Opus: This is the 79th 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.

Also, the cells marked in red are column indexers. In this puzzle, 1, 5, and 9 are the column indexers. If the number X is in a red cell in column Y in a given row, then in the same row the number Y is in column X. (For example, if in the second row there is a 2 in column 1 in the red column indexer, then the 1 in that row is in column 2; similarly, if there is a 5 in column 7 of the bottom row, that would mean column 5 of the bottom row contains a 7 because of where the 5 would be indexed.)

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

Thomas Hits the GAS (highlight to view): 2:35, 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; 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.)
Some cells in this Sudoku indicate how many different numbers sit around them; this new limitation may be enough to get you going in today’s GAS.

PDF

or solve online (using SudokuPad)

Author/Opus: This is the 76th 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 number in each circle indicates how many unique values can appear in the 8 surrounding cells.

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

Thomas Hits the GAS (highlight to view): 2:06, 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; 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.)
Warning to those who don’t read titles (so maybe this text won’t help either?): this is not an Arrow Sudoku but a variation with the average of all numbers on an arrow’s path represented in the circle.

PDF

or solve online (using SudokuPad)

Theme: Min-Maxed Means

Author/Opus: This is the 97th 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). Some arrow shapes are in the grid; the number in the circled cell is equal to the average of all numbers along the arrow. (For example, as R2C4 = 3, the average of R1C2, R1C3, and R1C4 is 3.)

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

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 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.)
Test your treatment of two-cell totals, thematically twisting two-by-two through today’s treat.

PDF

or solve online (using SudokuPad)

Theme: Copycat Killer

Author/Opus: This is the 78th 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 (🎩🥳): 7:30; One party hat (🥳): 15:00. All other solvers earn a 🦕: Alliterative Aristosaurus.

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 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.)
For his 75th GAS puzzle on GMPuzzles, Bill brings this creative variation where excluding numbers in surrounding cells drives the main logic.

PDF

or solve online (using SudokuPad)

Author/Opus: This is the 75th 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). Numbers in white circles MUST NOT appear in any 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 🦕: Outrageous Ornitschian.

Thomas Hits the GAS (highlight to view): 2:06, 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; 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.)
A GAS 101 tip for today might be “the crocodile eats the bigger number”; the inequalities (even when rotated) will tell you how the numbers flow around the grid.

PDF

or solve online (using SudokuPad)

Theme: Flower Garden

Author/Opus: This is the 96th 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, some inequality signs appear between cells. These signs must describe the relative values of the two numbers in those cells with the open side of the inequality sign pointing to the larger of the two numbers.

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

Thomas Hits the GAS (highlight to view): 1:52, 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.)
Join some old friends in this combination of two popular GAS variants, Thermo- and Kropki Pairs, appearing together without other variants for the first time in GAS.

PDF

or solve online (using SudokuPad)

Author/Opus: This is the 77th puzzle from Philip Newman, part of the Genuinely Approachable Sudoku (GAS) team.

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 be strictly increasing from the round bulb to the flat end. Also, 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 🦕: Pairwise Pachysuchus.

Thomas Hits the GAS (highlight to view): 3:00, 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 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 brings another “Anti” puzzle where you need to avoid placing consecutive numbers or doubled numbers immediately next to each other.

PDF

or solve online (using SudokuPad)

Theme: :O

Author/Opus: This is the 74th 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). No two adjacent cells that share an edge can differ by 1 or have a ratio of 2.

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

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; 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.)
Here is a rather even Even/Odd Sudoku from clover!; if you examine the clue cells carefully you might catch onto why.

PDF

or solve online (using SudokuPad)

Theme: Granny Squares

Author/Opus: This is the 95th 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, 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 (🎩🥳): 6:30; One party hat (🥳): 12:00. All other solvers earn a 🦕: quilting Kazaklambia.

Thomas Hits the GAS (highlight to view): 1:40, 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 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.)
Today’s Genuinely Approachable Sudoku is a pair of Classics; will 76 (or is it 77?) given digits across two puzzles satisfy Bill? Note: If you’re up for the challenge, the bonus version of the first puzzle is missing one digit. (Note: The bonus version of the 1st puzzle is shown here in order to not reveal the “extra” given; the PDF and SudokuPad links for the 1st puzzle will show the full grid if you do not want the extra hard edition).

PDF (bonus version of #1)

PDF (GAS version of #1)

PDF (#2)

or solve the bonus puzzle online (*very hard without a specific technique!)
or solve the 1st puzzle online
or solve the 2nd puzzle online (all using SudokuPad)

Author/Opus: This is the 76th 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): Note that today the hat times apply to the combined times for the two puzzles; if you attempt the bonus, reset the timer when you find the missing digit! Two party hats (🎩🥳): 6:00; One party hat (🥳): 15:00. All other solvers earn a 🦕: Memorable Maojandino.

Thomas Hits the GAS (highlight to view): 2:11 (bonus version) and 1:41, with SudokuPad replay file #1 and replay #2 shared as downloads for now (requires loading via settings menu with improvements expected before people should use this regularly).

Solution: PDF #1 and PDF #2 and solving video with explanation 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.