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Theme: Anti-XV (for patron Phleb)

Author/Opus: This is the 129th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Sudoku rules. Also, when the numbers in two cells sharing an edge add up to 5, a V is marked on that edge; when the numbers in two cells sharing an edge add up to 10, an X is marked on that edge. (For clarity, as no symbols appear in the grid below, there are never any edge-adjacent cells that sum to 5 or 10.)

Answer String: Enter the 6th row from left to right, followed by a comma, followed by the 5th column from top to bottom.

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

Solution: PDF

Note: Follow this link for other variations of Sudoku and this link for classic Sudoku. If you are new to this puzzle type, here are our easiest Sudoku to get started on.

(View image directly for larger form.)

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or solve online (using our beta test of Penpa-Edit tools in linex mode where left click+drag draws lines and right click marks X’s)

Theme: 24 Hours Again (for patron TheSubro)

Author/Opus: This is the 128th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Connect each pair of identical numbers with a path passing through edge-adjacent cells. No cell may be used on more than one path.

Answer String: Enter the length in cells of the horizontal line segments from left to right in the marked rows, starting at the top. Separate each row’s entry with a comma.

Time Standards (highlight to view): Grandmaster = 2:45, Master = 5:45, Expert = 11:30

Solution: PDF

Note: Follow this link for other Loop/Path puzzles.

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Theme: Clue Symmetry and Logic

Author/Opus: This is the 127th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Hybrid of Japanese Sums and Latin Squares. Place a digit from 1-6 (1-4 in the example) into some cells so that each digit appears exactly once in each row and column. Numbers outside the grid indicate the sums of all adjacent digits in order in that row or column.

Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 8th column from top to bottom. Use a capital X for empty cells.

Time Standards (highlight to view): Grandmaster = 4:45, Master = 7:30, Expert = 15:00

Solution: PDF; a solution video is available here.

Note: Follow this link for other Japanese Sums puzzles.

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Theme: Area 29

Author/Opus: This is the 126th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Kakuro Rules.

Answer String: Enter the values in each white cell in the marked row from left to right and then the marked column from top to bottom, separating the groups with a comma.

Time Standards (highlight to view): Grandmaster = 4:30, Master = 6:45, Expert = 13:30

Solution: PDF

Note: Follow this link for other Kakuro puzzles.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)

Theme: Prime Numbers

Author/Opus: This is the 125th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Place a digit from 1-4 (1-3 in the example) into some cells so that each digit appears exactly once in each row and column. Numbers outside the grid indicate the sum of all numbers appearing in the corresponding rows and columns. (Digits in adjacent cells are combined to form multi-digit numbers.)

Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 6th column from top to bottom. Use a capital X for empty cells.

Time Standards (highlight to view): Grandmaster = 3:00, Master = 4:00, Expert = 8:00

Solution: PDF

Note: Follow this link for other less common Number Placement puzzles.

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or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Clue Symmetry and Logic

Author/Opus: This is the 124th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Variation of Tapa rules. The clue numbers now refer to the groups of unshaded segments around that cell. Cells with numbers count as unshaded cells for adjacent clues. All other rules for the shaded Tapa are the same as usual.

Or see here:

Answer String: Enter the length in cells of each of the shaded segments from left to right for the marked rows, starting at the top. Separate each row’s entry from the next with a comma.

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

Solution: PDF

Note: Follow this link for other Tapa variations and this link for classic Tapa. If you are new to this puzzle type, here are our easiest Tapa puzzles to get started on.

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Theme: The Clueless Center (for patron Veep)

Author/Opus: This is the 123rd puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Skyscrapers rules. The grid is made of 9 overlapping 5×5 Skyscrapers puzzles. The clue cells shared between grids must see the same number of buildings (i.e., you should fill in all interior gray cells with clue numbers as these are used by two grids).

Answer String: Enter the fifteen digits (in the white cells) within the marked rows from left to right, separating the two rows with a comma.

Time Standards (highlight to view): Grandmaster = 20:00, Master = 35:00, Expert = 1:10:00

Solution: PDF

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.

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Theme: Clue Symmetry and Logic (for patron Phleb)

Author/Opus: This is the 122nd puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Sudoku rules. Also, identical digits cannot be in diagonally-adjacent cells.

Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 5th row from left to right.

Time Standards (highlight to view): Grandmaster = 7:00, Master = 12:00, Expert = 24:00

Solution: PDF

Note: Follow this link for other variations of Sudoku and this link for classic Sudoku. If you are new to this puzzle type, here are our easiest Sudoku to get started on.

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Theme: Rowing Race (for patron Chris Green)

Author/Opus: This is the 121st puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Variation of Yajilin rules. Numbers indicate sum of black squares in both directions pointed to by arrows.

Answer String: Enter the length in cells of the horizontal loop segments from left to right in the marked rows, starting at the top. If the loop only has vertical segments in the marked row, enter 0. Separate each row’s entry with a comma.

Time Standards (highlight to view): Grandmaster = 4:45, Master = 12:45, Expert = 25:30

Solution: PDF

Note: Follow this link for Yajilin variants and this link for classic Yajilin. If you are new to this puzzle type, here are our easiest Yajilin to get started on.

PDF

or solve online (using our beta test of Penpa-Edit tools)

Theme: R is for Randy (for patron Randy Rogers)

Author/Opus: This is the 120th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Kakuro Rules. Also, some cells may remain empty but empty cells cannot share an edge with other empty cells.

Answer String: Enter the values in each white cell in the marked rows from left to right, separating the rows with a comma. Enter a capital X for any blank white cells, and ignore all black cells.

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

Solution: PDF; a solution video is available here.

Note: Follow this link for other Kakuro puzzles.