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Theme: 1 to 4

Author/Opus: This is the 9th puzzle from guest contributor Jonas Gleim.

Rules: Standard Cross the Streams rules.

Difficulty: 3 stars

Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:45, Expert = 11:30

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: 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: 4-way Intersections

Author/Opus: This is the 218th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Kakuro Rules.

Difficulty: 4 stars

Time Standards (highlight to view): Grandmaster = 6:30, Master = 9:30, Expert = 19:00

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: Knight’s Moves

Author/Opus: This is the 9th puzzle from guest contributor Salih Alan.

Rules: Standard Kakuro Rules.

Difficulty: 3.5 stars

Time Standards (highlight to view): Grandmaster = 4:15, Master = 6:15, Expert = 12:30

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: Squaring the Circle

Author/Opus: This is the 17th puzzle from guest contributor Dan Katz.

Rules: Standard Kakuro Rules.

Difficulty: 3 stars

Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:45, Expert = 11:30

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: 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: 234

Author/Opus: This is the 3rd puzzle from guest contributor Sam Cappleman-Lynes.

Rules: Standard Skyscrapers rules.

Difficulty: 3.5 stars

Time Standards (highlight to view): Grandmaster = 4:15, Master = 9:15, Expert = 18:30

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

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

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Theme: 20-20 Vision

Author/Opus: This is the 1st puzzle from guest contributor Teddy Tan.

Rules: Standard Thermo-Sudoku rules.

Difficulty: 3.5 stars

Time Standards (highlight to view): Grandmaster = 5:00, Master = 7:30, Expert = 15:00

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

Note: Follow this link for more Thermo-Sudoku puzzles. If you are new to this puzzle type, here are our easiest Thermo-Sudoku to get started on. More Thermo-Sudoku puzzles can be found in The Art of Sudoku 2 and Masterpiece Sudoku Mix 2.