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or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between Sudoku = big entries and Number candidate = small entries in the corners of cells.)

Theme: Tootsie Roll

Author/Opus: This is the 235th puzzle from Thomas Snyder aka Dr. Sudoku.

Rules: Standard Tight Fit Sudoku rules. Remember, the smaller number goes above the larger number in all slashed cells. The range of this puzzle is 1-9.

Answer String: Enter the 4th row from left to right, followed by a comma, followed by the 6th row from left to right. (Note: for the tight fit cells, enter the top before the bottom as would be normal for the read order.)

Time Standards (highlight to view): Grandmaster = 3:30, Master = 5:45, Expert = 11:30

Solution: PDF

Note: Follow this link for other Tight Fit Sudoku puzzles on this website. If you are new to this puzzle type, here are our easiest Tight Fit Sudoku to get started on. More Tight Fit Sudoku can be found in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli and in The Art of Sudoku 2.

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

Theme: Symmetry and Logic

Author/Opus: This is the 98th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Isodoku rules, using numbers 1-8.

Answer String: Enter the 5th “row” from left to right, followed by a comma, followed by the 7th “row” from left to right.

Time Standards (highlight to view): Grandmaster = 3:30, Master = 4:15, Expert = 8:30

Solution: PDF

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

PDF

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 113th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Tapa rules. Also there are two pairs of windows. One pair is the upper left (blue, solid) and lower right (red, solid). The other is the upper right (blue, dashed) and lower left (red, dashed). The cells in the same position in each window pair must have the exact opposite shading.

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 = 3:00, Master = 5:30, Expert = 11:00

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.

PDF

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: Clue Symmetry and Logic

Author/Opus: This is the 112th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Masyu rules. Also there are two windows in the upper left (blue) and lower right (red) of the grid. If the loop passes through a cell in one window by going straight, it must go through the same cell in the other window by turning; the converse is also true. (It is possible for the cells to be unused by the loop in both windows.)

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 = 3:30, Master = 5:15, Expert = 10:30

Solution: PDF

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

PDF

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

Theme: Clue Symmetry and Logic

Author/Opus: This is the 111th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Kurotto rules. Also there are two windows in the upper left (blue) and lower right (red) of the grid. The cells in the same position in these windows must have the exact opposite shading.

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 with a comma.

Time Standards (highlight to view): Grandmaster = 3:30, Master = 4:30, Expert = 9:00

Solution: PDF; a solution video is available here.

Note: Follow this link for other Kurotto puzzles. If you are new to this puzzle type, here are our easiest Kurotto to get started on. More Kurotto puzzles can be found in the ebook Kurotto by Prasanna Seshadri.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)

Theme: Clue Symmetry and Logic

Author/Opus: This is the 110th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Cave rules. Also there are two windows in the upper left (blue) and lower right (red) of the grid. The cells in the same position in these windows must have the exact opposite shading (i.e., those inside the cave in one window are outside the cave in the other window).

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

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

Solution: PDF

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

PDF

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 on edges)

Theme: Clue Symmetry and Logic

Author/Opus: This is the 109th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Tapa-Like Loop Rules. (Form a single non-intersecting loop. Clues inside the grid represent the number of neighboring cells visited by the loop; if there is more than one number in a cell, each number should be represented with a separate loop segment. There is no 2×2 rule of Tapa in this puzzle. This example image should help:

Also, there are two windows in the upper left (blue) and lower right (red) of the grid. If a cell is used by the loop in one window, then the cell in the same position in the other window is not used by the loop.

Answer String: Enter the length in cells of the horizontal loop segments from left to right in the marked rows, starting at the top. Separate each row’s entry with a comma. For the example, this would be “11,12”.

Time Standards (highlight to view): Grandmaster = 1:45, Master = 2:30, Expert = 5:00

Solution: PDF

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

PDF

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

Theme: Clue Symmetry and Logic

Author/Opus: This is the 108th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Nurikabe rules. Also there are two windows in the upper left (blue) and lower right (red) of the grid. The cells in the same position in these windows must have the exact opposite shading (see example image).

Answer String: Enter the length in cells of each of the black segments (the unnumbered, connected “ocean”) 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 = 1:40, Master = 2:45, Expert = 5:30

Solution: PDF

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

(view directly for a larger image)

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or solve online (using our beta test of Penpa-Edit tools; note that the dotted circles are just for answer entry and are where the number should be placed in the 2×2 cell. An alternate option with centralized digit entry is here.)

Theme: Heart

Author/Opus: This is the 97th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Variation of Kakuro: Enter a single digit from 1 to 9 into each cell so that the sum of digits in each Across entry equals the value given to the left of the entry, and the sum of digits in each Down entry equals the value given above the entry. The gray (2×2) cells are to be filled by a single digit which sits in multiple rows and columns. No digit may be repeated within a single entry, regardless of if it is in a small or large cell.

Answer String: Enter the values in each cell in the marked rows from left to right, separating the rows with a comma. Ignore black cells.

Time Standards (highlight to view): Grandmaster = 13:00, Master = 22:30, Expert = 45:00

Solution: PDF; a solution video is available here.

Note: Follow this link for other Kakuro puzzles.

PDF

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

Theme: Antisymmetry

Author/Opus: This is the 188th puzzle from our contributing puzzlemaster Grant Fikes.

Rules: Standard Statue Park rules. Use all 12 pentominoes once.

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 = 3:45, Master = 5:00, Expert = 10:00

Solution: PDF

Note: Follow this link for other Statue Park Puzzles. If you are new to this puzzle type, here are our easiest Statue Parks to get started on.