or solve online (using our beta test of Penpa-Edit tools in edgex mode where left click+drag draws lines and right click marks X’s)
Theme: Framed
Rules: Standard Slitherlink rules.
Answer String: Enter the length in cells of each of the internal loop 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 = 1:00, Master = 1:45, Expert = 3:30
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools in edgex mode where left click+drag draws lines and right click marks X’s)
Theme: Unfriendly Neighbors
Rules: Standard Slitherlink rules. Also, there are some sheep (marked S) that must be inside the loop and some wolves (marked W) that must be outside the loop.
Answer String: Enter the length in cells of each of the internal loop segments following the arrows for the marked rows, starting at the top. Separate each row’s entry with a comma.
Time Standards (highlight to view): Grandmaster = 2:15, Master = 3:00, Expert = 6:00
Solution: PDF
View image directly for a larger form.
or solve online (using our beta test of Penpa-Edit tools)
Theme: Logic
Rules: Standard Yajilin rules.
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 = 12:00, Master = 22:30, Expert = 45:00
Solution: 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: Logical theme encountered during the solve
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 = 0:40, Master = 1:00, Expert = 2:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Clockwise Threes
Rules: Standard Yajilin rules.
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 = 2:00, Master = 5:00, Expert = 10:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between edgex mode where left click+drag draws lines and right click marks X’s and a shading mode to mark true/false clues.)
This is a “Franken-Friday” puzzle variation.
Theme: Logical
Rules: Variation of standard Slitherlink rules. Exactly one clue in each row and column is lying and must represent a different number.
Answer String: Enter the length in cells of each of the internal loop 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 = 6:45, Master = 12:00, Expert = 24:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools in edgex mode where left click+drag draws lines and right click marks X’s)
Theme: Windmill
Rules: Standard Slitherlink rules.
Answer String: Enter the length in cells of each of the internal loop 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 = 1:35, Master = 2:15, Expert = 4:30
Solution: PDF
Editor’s Note: While our Sunday Surprises are meant to be unexpected, today’s surprise should be a double surprise for you. Besides the bonus puzzle, it is my great pleasure to announce that one of the world’s best puzzlemakers and the inventor of Tapa, Serkan Yürekli, is joining us as a regular contributor. (If you haven’t yet, you should check out his Tapa Variation Contests that are starting again this weekend and his Classic Tapa Contest that starts next week.)
I asked Serkan, for his debut week, to provide some of the puzzle styles I know him best for and I hope you will enjoy what is in store. Today brings a “The Persistence of Memory” puzzle that Serkan wrote with GMPuzzles in mind.
(View image directly for larger form.)
(PNG with extra lines for solvers who want to flood-fill the path)
or solve online (using our beta test of Penpa-Edit tools using a composite mode where left click inside cell shades square, left click + drag draws line segment, right click inside cell adds dot, and right click on cell edge adds an x.)
Theme: GMPuzzles
Rules: Find a path from one dot to the other by moving horizontally or vertically between adjacent squares. The path cannot touch itself, even diagonally. All highlighted regions must be used, and may be re-entered. If two or more highlighted regions have the same shape and orientation, then how the path passes through those shapes must be identical. Or see here.
Answer String: For each marked row, enter the size of each group of cells used by the path from left to right. Separate each row with a comma.
Time Standards (highlight to view): Grandmaster = 7:30, Master = 10:30, Expert = 21:00
Solution: 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)
This is a “Twisted Tuesday” puzzle variation.
Theme: All Cells and All Antisymmetry!
Rules: Standard Masyu rules. Also, ALL CELLS must be visited 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. 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 = 2:30, Expert = 5:00
Solution: 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: Almost Twisted Symmetry
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 = 0:45, Master = 1:00, Expert = 2:00
Solution: PDF
