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Theme: Only One

Author/Opus: This is the 3rd puzzle from guest contributor David Altizio.

Rules: Standard Yajilin rules.

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 1:00, Master = 2:00, Expert = 4:00

Solution: PDF; a solution video is also available here.

Note: Follow this link for classic Yajilin and this link for Yajilin variations. If you are new to this puzzle type, here are our easiest Yajilin to get started on. More Yajilin puzzles can be found in The Art of Puzzles 2, in Yajilin by Murat Can Tonta and Prasanna Seshadri, and in our beginner-friendly book Logic Puzzles 101.

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Theme: Five Times

Author/Opus: This is the 10th puzzle from guest contributor Salih Alan.

Rules: Standard TomTom rules, using the integers 1-5.

Difficulty: 1.5 stars

Time Standards (highlight to view): Grandmaster = 0:40, Master = 1:45, Expert = 3:30

Solution: PDF; a solution video is also available here.

Note: Follow this link for classic TomTom and this link for TomTom variations. If you are new to this puzzle type, here are our easiest TomTom to get started on. More TomTom puzzles can be found in the TomTom collection, in The Art of Puzzles, and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.

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Theme: Wind Rose

Author/Opus: This is the 81st puzzle from our contributing puzzlemaster Ashish Kumar.

Rules: Standard Sudoku rules.

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 2:00, Master = 3:15, Expert = 6:30

Solution: PDF; a solution video is also available here.

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 classic Sudoku puzzles can be found in The Art of Sudoku, The Art of Sudoku 2 and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.

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Theme: Clones

Author/Opus: This is the 394th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Sudoku rules.

Difficulty: 1.5 stars

Time Standards (highlight to view): Grandmaster = 1:40, Master = 2:15, Expert = 4:30

Solution: PDF; a solution video is also available here.

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 classic Sudoku puzzles can be found in The Art of Sudoku, The Art of Sudoku 2 and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.

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Theme: 123

Author/Opus: This is the 209th puzzle from our contributing puzzlemaster Murat Can Tonta.

Rules: Standard Cross the Streams rules.

Difficulty: 2.5 stars

Time Standards (highlight to view): Grandmaster = 2:00, Master = 3:15, Expert = 6:30

Solution: PDF; a solution video is also available here.

Note: Follow this link for other Cross the Streams. If you are new to this puzzle type, here are our easiest Cross the Streams to get started on.

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Theme: 23

Author/Opus: This is the 219th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Cross the Streams rules.

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 1:30, Master = 2:15, Expert = 4:30

Solution: PDF; a solution video is also available here.

Note: Follow this link for other Cross the Streams. If you are new to this puzzle type, here are our easiest Cross the Streams to get started on.

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Theme: 2 by N

Author/Opus: This is the 54th puzzle from our contributing puzzlemaster Palmer Mebane.

Rules: Standard Kakuro Rules.

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 2:00, Master = 2:45, Expert = 5:30

Solution: PDF; a solution video is also available here.

Note: Follow this link for classic Kakuro and this link for Kakuro variations. More Kakuro puzzles can be found in Kakuro and Variations by Serkan Yürekli and in The Art of Puzzles 2.

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Theme: Fifteen Puzzle

Author/Opus: This is the 357th puzzle from our contributing puzzlemaster Grant Fikes.

Rules: Standard Kakuro Rules.

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 1:25, Master = 1:45, Expert = 3:30

Solution: PDF; a solution video is also available here.

Note: Follow this link for classic Kakuro and this link for Kakuro variations. More Kakuro puzzles can be found in Kakuro and Variations by Serkan Yürekli and in The Art of Puzzles 2.

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Theme: 1-7

Author/Opus: This is the 9th puzzle from guest contributor Takeya Saikachi.

Rules: Standard Tapa rules. Also, similar to Nurikabe, each Tapa clue cell is part of an island of horizontally and vertically connected white cells and the area of the island must be one of the numbers in the clue (as an example, if a clue is 1 5, then the island containing that clue must be either 1 cell or 5 cells large). Islands are allowed to touch diagonally. No island can contain more than one number clue cell, but there may be islands without any number clues in the grid.

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 1:30, Master = 2:30, Expert = 5:00

Solution: PDF; a solution video is also available here.

Note: Follow this link for classic Tapa and this link for Tapa variations. If you are new to this puzzle type, here are our easiest Tapa puzzles to get started on. More Tapa puzzles can be found in The Art of Puzzles, in Tapa and Variations, and in our beginner-friendly collection Intro to GMPuzzles, all by Serkan Yürekli.

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Theme: Squares

Author/Opus: This is the 356th puzzle from our contributing puzzlemaster Grant Fikes.

Rules: Standard Araf rules.

Difficulty: 1 star

Time Standards (highlight to view): Grandmaster = 0:40, Master = 1:00, Expert = 2:00

Solution: PDF; a solution video is also available here.

Note: Follow this link for more Araf puzzles on this website. If you are new to this puzzle type, here are our easiest Araf Puzzles to get started on. More Araf puzzles can be found in the ebook Araf by Serkan Yürekli.