(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
In an Index to One Sudoku, outside clues point you to cells that in turn tell you where to place the ones in a given row or column.

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Theme: Dude, Where’s My Ones?

Author/Opus: This is the 164th 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). An outside clue N indicates a special interaction happening with the number in the Nth cell from that direction. The value X inside that Nth cell must indicate the exact distance in cells of the number 1 from the outside clue. (For example, because of the 2 clue at the top of the first column, if R2C1 contains the number 7, then R7C1 (7 cells from the top of the grid) must contain the 1 in that column.)

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

Thomas Hits the GAS (highlight to view): 4:34, 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

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.)
Does the house always win? Beat the odds by completing this Slot Machine Sudoku.

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Author/Opus: This is the 166th 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 green stripe contains the same sequence of numbers when reading down the columns and wrapping back to the top; the sequence can start at any cell along each stripe. (For instance, if the first stripe contains the numbers 123456789 from top to bottom, the other two could contain 345678912 and 789123456.)

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

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

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.)
Race to determine the position of each 1 to help you fill in the grid and cross the finish line in this Pole Position Sudoku.

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Theme: Checkered Flag

Author/Opus: This is the 185th 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). The first number in each row or column (i.e., the leftmost or topmost cell) indicates the position of the number 1 within that row or column. (For instance, if the number at the top of column 2 (R1C2) is 8, then 1 is positioned in the eighth row in that column, R8C2.)

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

Thomas Hits the GAS (highlight to view): 2:20, 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

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.)
Continuing with our October theme, solve this Renban Sudoku to help the “octipetal” flower bloom.

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Theme: Octipetal

Author/Opus: This is the 163rd 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 (🥳): 14:00. All other solvers earn an 🦕: Anthologist Antarctosaurus.

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.

(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
In today’s Neighbors Sudoku (Ordered), the sequence of the outside clues matters. Make sure clued pairs stay in the given order.

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or solve online (using SudokuPad)

Author/Opus: This is the 165th 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). Outside clues indicate pairs of numbers which must appear immediately adjacent to each other in the given order within that row or column. (For instance, in the third column, 8 and 1 are in adjacent cells with the 8 immediately above the 1.)

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

Thomas Hits the GAS (highlight to view): 2:05, 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.)
When the Romans adopted a 12-month calendar in place of their original 10-month one, they tacked January and February on at the beginning. Thus October, month number 8, was bumped “octwardly” to month number 10. You might find the pattern in this German Whispers Sudoku a little “octward” as well.

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Theme: An Octward Pattern

Author/Opus: This is the 162nd 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 (🥳): 15:00. All other solvers earn an 🦕: Octahedral Oceanotitan.

Thomas Hits the GAS (highlight to view): 3:54, 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.)
In a Coast to Coast Sudoku, you must place indicated pairs of digits symmetrically. Zip from coast to coast of the grid to fill in the pairs and complete this puzzle.

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or solve online (using SudokuPad)

Author/Opus: This is the 164th 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). Additionally, wherever two numbers are given outside the grid, they must appear in either order in the first and last three cells in that row in symmetric locations relative to the center. For example, if one of them appeared in column 2, the other must appear in column 8.

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

Thomas Hits the GAS (highlight to view): 1:47, 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.)
Semiramide (1823) is the last of the prolific Gioachino Rossini’s Italian operas. Can you place the last of the digits in this Rossini (No Inverse) Sudoku?

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Theme: Semiramide

Author/Opus: This is the 183rd 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). Whenever an arrow is given outside the grid, the first three numbers in that row or column must increase in the direction of the arrow. For example, the arrow at the left of row 4 means R4C1 < R4C2 < R4C3 and the arrow at the left of row 7 means R7C1 > R7C2 > R7C3. (The absence of an outside arrow clue has no meaning in this puzzle unlike “standard” Rossini Sudoku.)

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

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

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.)
Ca_ yo_ fi_d t_e m_ss_ng _um_er_ in _hi_ Pa_ti_l T_io _ud_ku?

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or solve online (using SudokuPad)

Author/Opus: This is the 163rd 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, orange circles contain numbers from {1, 2, 3}, blue squares contain numbers from {4, 5, 6}, and green diamonds contain numbers from {7, 8, 9}.

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

Thomas Hits the GAS (highlight to view): 2:18, 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

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.)
Columns 1, 5, and 9 are empty in this Column Indexer Sudoku. Earn your stripes by filling in these columns and the remaining cells of this puzzle.

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Theme: 159159

Author/Opus: This is the 182nd 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, 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 third row there is a 3 in column 1 in the red column indexer, then the 1 in that row is in column 3; similarly, if there is a 5 in column 4 of the third row, that would mean column 5 of the third row contains a 4 because of where the 5 would be indexed.)

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

Thomas Hits the GAS (highlight to view): 3:03, 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.