or solve online (using our beta test of Penpa-Edit tools)
Theme: Mostly themeless, except for the logical solving path
Rules: Standard Cross the Streams rules.
Answer String: Enter the length in cells of each of the black segments from top to bottom for the marked columns, going in order from A to B to C to D and separating each entry with a comma.
Time Standards (highlight to view): Grandmaster = 6:00, Master = 10:00, Expert = 20:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a composite mode for line/edge drawing and a number entry mode.)
This is a “Franken-Friday” puzzle variation.
Theme: Mostly themeless, besides the variation itself
Rules: Variation of standard Fillomino rules. All polyominoes must be rectangles.
Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Start with the 6th column, followed by a comma, followed by the 9th column.
Time Standards (highlight to view): Grandmaster = 3:45, Master = 5:00, Expert = 10:00
Solution: PDF
Note: Follow this link for other classic Fillomino and this link for more variations on Fillomino puzzles. If you are new to this puzzle type, here are our easiest Fillomino puzzles to get started on.
or solve online (using our beta test of Penpa-Edit tools)
Theme: Mostly themeless
Rules: Standard Consecutive Sudoku rules. Since there are no bars in this grid, this should be considered a Non-Consecutive Sudoku.
Answer String: Enter the 1st column from top to bottom, followed by a comma, followed by the 9th column from top to bottom.
Time Standards (highlight to view): Grandmaster = 6:30, Master = 11:00, Expert = 22:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools; use Tab to go between number entry and shading modes)
This is a “Franken-Friday” puzzle variation.
Theme: Crypt-oceanography
Rules: Standard Nurikabe rules, except the size of each island has been encrypted. Each letter in this puzzle stands for a different positive integer, which must be determined while solving the puzzle. (Formatting note: space has been left in the cells for you to write the actual number values beneath each letter.)
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 = 10:00, Master = 15:00, Expert = 30:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Greek Crosses
Rules: Standard Tile Sudoku rules.
Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 12th row from left to right.
Time Standards (highlight to view): Grandmaster = 5:00, Master = 8:30, Expert = 17:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Don’t Cross the Streams! (Each arrow deflects to avoid a crossing with at least one other arrow.)
Rules: Standard Arrow Sudoku rules.
Answer String: Enter the 3rd row from left to right, followed by a comma, followed by the 4th row from left to right.
Time Standards (highlight to view): Grandmaster = 5:30, Master = 8:30, Expert = 17:00
Solution: PDF
Note: Follow this link for more Arrow Sudoku. If you are new to this puzzle type, here are our easiest Arrow Sudoku to get started on. More Arrow Sudoku puzzles can be found in The Art of Sudoku 2.
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: Two Rings
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 = 8:00, Master = 12:00, Expert = 24:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
This is a “Franken-Friday” puzzle variation.
Theme: Spiral
Rules: Variation of TomTom rules, using digits from 1-6. In this variation, equations start at the cell marked by the arrow and proceed cell by cell performing operations in the order they are encountered to equal the value indicated in the last cell. In other words, A+BxC = 18 could be A=5, B=1, C=3 as 5+1 = 6 and 6×3 = 18.
Answer String: Enter the 3rd row from left to right, followed by a comma, followed by the 5th row from left to right.
Time Standards (highlight to view): Grandmaster = 5:00, Master = 9:00, Expert = 18:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between ship placement and shading modes. In ship placement mode, right click gives sea, left click gives circle/square, left click and drag for rounded ships.)
Theme: X Marks the Spot
Rules: Standard Battleships rules. Notice the larger than usual fleet beneath the puzzle.
Answer String: For each row from top to bottom, enter the number of the first column from the left where a ship segment appears. If the row is empty, enter 0. Enter these numbers as a single string with no separators.
Time Standards (highlight to view): Grandmaster = 5:45, Master = 8:30, Expert = 17:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between linex mode where left click+drag draws lines and right click marks X’s and a black circle shading mode.)
This is a “Franken-Friday” puzzle variation.
Theme: This is not all white!
Rules: Standard Masyu rules. Also, some white circles must be shaded in to become black circles to allow solution of the puzzle.
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 = 6:00, Master = 9:00, Expert = 18:00
Solution: PDF