Yajilin (Unique) by Serkan Yürekli

Yajilin by Serkan Yürekli

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Theme: A Migratory Bird

Author/Opus: This is the 190th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Yajilin rules. Also, enter a number into each gray cell to represent the total number of blackened cells in the given direction. Numbers cannot repeat in a row or column.

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 = 1:45, Master = 3:00, Expert = 6:00

Note: Follow this link for other variations of Yajilin and this link for classic Yajilin. 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.

Snake Pit by Serkan Yürekli

Snake Pit by Serkan Yürekli

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Theme: Fourspower

Author/Opus: This is the 189th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: (Hybrid of Fillomino and Snake Puzzles.) Divide the grid along the boundary lines so that every cell belongs to a snake. A snake is a one-cell-wide path at least two cells long that does not touch itself, not even diagonally. Circled cells must be at one of the ends of a snake. A snake may contain one circled cell, two circled cells, or no circled cells at all. Numbered cells must be part of a snake with a length of exactly that number of cells. A snake may contain one number, multiple identical numbers, or no numbers at all. Two snakes of the same length cannot touch each other horizontally or vertically.

Also see this example:

Snake Pit by Carl Worth

Answer String: For each cell in the marked rows/columns, enter the length of the snake it belongs to. Enter just the last digit for any two-digit number. This example has the key “35522,44462”.

Time Standards (highlight to view): Grandmaster = 3:00, Master = 4:45, Expert = 9:30

Note: Follow these link for other Fillomino or Snake puzzles.

Skyscrapers by Serkan Yürekli

Skyscrapers by Serkan Yürekli

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Theme: A Land of 2

Author/Opus: This is the 188th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Skyscrapers rules.

Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 5th row from left to right.

Time Standards (highlight to view): Grandmaster = 1:30, Master = 2:00, Expert = 4:00

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.

Sudoku by Serkan Yürekli

Sudoku by Serkan Yürekli

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Theme: S is for Sudoku

Author/Opus: This is the 187th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Sudoku rules.

Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 9th row from left to right.

Time Standards (highlight to view): Grandmaster = 4:15, Master = 6:30, Expert = 13:00

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.

Tight Fit Sudoku (Even/Odd) by Serkan Yürekli

Tight Fit Sudoku by Serkan Yürekli

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Theme: Antisymmetric Hole

Author/Opus: This is the 186th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Tight Fit Sudoku rules. Also, digits within a grey square must be even and digits within a grey circle must be odd. The range of this puzzle is 1-9.

Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 5th 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 = 4:15, Master = 6:00, Expert = 12:00

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.

Tight Fit Sudoku by Serkan Yürekli

Tight Fit Sudoku by Serkan Yürekli

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Theme: Oddland

Author/Opus: This is the 185th puzzle from our contributing puzzlemaster Serkan Yürekli.

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 = 2:30, Master = 4:00, Expert = 8:00

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.

Cave (Pentominous) by Serkan Yürekli [bonus]

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Cave by Serkan Yürekli

Theme: Clue Symmetry and Logic

Author/Opus: This is the 184th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Cave rules. Also, the Cave must be divisible into pentominoes. Not all pentominoes need to appear, and pentomino shapes can be used more than once. As in Pentominous, no two identical pentominoes can share an edge.

Answer String: Enter the letters associated with the pentominoes occupying each cave cell in the marked rows, separating the rows by a comma. Use CAPITAL LETTERS, and ignore non-cave cells (Example: “WXXXT,LLUU,PPPULUF”).

Time Standards (highlight to view): Grandmaster = 3:45, Master = 5:15, Expert = 10:30

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.