Double Yajilin by Ashish Kumar and Thomas Snyder

Yajilin by Ashish Kumar and Thomas Snyder

PDF

Theme: Clue Symmetry and Logic

Author/Opus: This is the 28th puzzle from our contributing puzzlemaster Ashish Kumar and 347th from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Yajilin rules, except that instead of blackening single cells, blacken in dominoes (1×2 rectangles). Clues indicate the total number of dominoes (not the total number of cells) that are shaded in the given direction.

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 = 4:15, Expert = 8:30

Solution: PDF

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.

Yajilin (Regional) by Prasanna Seshadri

Yajilin by Prasanna Seshadri

PDF

Theme: Big +, Small +

Author/Opus: This is the 176th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Variation of Yajilin. Blacken some white cells and then draw a single closed loop (without intersections or crossings) through all remaining white cells. Blackened cells cannot share an edge with each other. A number in a region indicates how many white cells must be blackened. Cells with number clues may be blackened.

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 = 3:15, Master = 4:30, Expert = 9:00

Solution: PDF

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.

Yajilin (Strict Transparent) by Joseph Howard

Yajilin by Joseph Howard

PDF

Theme: Every Which Way but Up

Author/Opus: This is the 13th puzzle from guest contributor Joseph Howard.

Rules: Variation of Yajilin rules, including both diagonal arrows and transparent clues that the loop can pass through. Any clue cells that are part of the loop must be true and indicate the number of shaded cells in that direction. Any clue cell that is not part of the loop must be blackened, and the clue value MUST also be false (e.g., if a 2 left clue is blackened, there must be some number of cells other than 2 blackened to the left of the clue).

See also this example:

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 = 4:15, Master = 10:30, Expert = 21:00

Solution: PDF

Note: Follow this link for other 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, and in our beginner-friendly book Logic Puzzles 101.

Double Yajilin by Serkan Yürekli

Yajilin by Serkan Yürekli

PDF

Theme: Entrance and Exit

Author/Opus: This is the 242nd puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Yajilin rules, except that instead of blackening single cells, blacken in dominoes (1×2 rectangles). Clues indicate the total number of dominoes (not the total number of cells) that are shaded in the given direction.

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 = 3:15, Master = 5:30, Expert = 11:00

Solution: PDF

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.

Yajilin (Regional) by Murat Can Tonta

Yajilin by Murat Can Tonta

PDF

Theme: Clue Symmetry and Logic

Author/Opus: This is the 91st puzzle from our contributing puzzlemaster Murat Can Tonta.

Rules: Variation of Yajilin. Blacken some white cells and then draw a single closed loop (without intersections or crossings) through all remaining white cells. Blackened cells cannot share an edge with each other. A number in a region indicates how many white cells must be blackened. Cells with number clues may be blackened.

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 = 8:00, Master = 12:30, Expert = 25:00

Solution: PDF

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.

Yajilin (Unique) by Serkan Yürekli

Yajilin by Serkan Yürekli

PDF

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

Solution: PDF

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.

Yajilin (Pentominoes) by Murat Can Tonta

While not a Pentominous puzzle, we wanted to share a cool Pentominoes loop puzzle variant from Murat this week, who is a co-author with Grant Fikes of Plenty o’ Pentominous, released this week.

Yajilin by Murat Can Tonta

(view directly for a larger image)

PDF

Theme: Clue Symmetry and Logic

Author/Opus: This is the 86th puzzle from our contributing puzzlemaster Murat Can Tonta.

Rules: Variation of Yajilin. Place the twelve pentominoes into empty cells in the grid (rotations and reflections allowed). No two pentominoes can share an edge. The numbered arrows indicate the number of cells that are parts of pentominoes in the given direction. Then draw a single closed loop (without intersections or crossings) through all remaining white cells as in a Yajilin.

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 = 8:00, Master = 12:30, Expert = 25:00

Solution: PDF

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.