or solve online (using our beta test of Penpa-Edit tools)
Theme: Missing my Rubik’s? This isodoku has 27 fewer “cubes” than Monday’s puzzle.
Rules: Standard Isodoku rules, using numbers 1-8.
Answer String: Enter the 1st “row” on the left edge, followed by a comma, followed by the 2nd “row” on the left edge.
Time Standards (highlight to view): Grandmaster = 2:15, Master = 4:15, Expert = 8:30
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.)
Theme: Two by Fours
Rules: Standard Fillomino rules.
Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Start with the 9th row, followed by a comma, followed by the 10th column.
Time Standards (highlight to view): Grandmaster = 1:15, Master = 1:45, Expert = 3:30
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: Peace!
Rules: Standard Isodoku rules, using numbers 1-8.
Answer String: Enter the 1st “row” on the left edge, followed by a comma, followed by the 4th “row” on the left edge.
Time Standards (highlight to view): Grandmaster = 2:00, Master = 4:00, Expert = 8:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: L’s Big and Small
Rules: Combined Deficit and Surplus Sudoku rules, with some regions with fewer numbers (no repeats but one number missing) and others with more numbers (1-8 plus one repeat) than expected in a Sudoku. Use numbers from 1-8.
Answer String: Enter the 4th row from left to right, followed by a comma, followed by the 8th row from left to right.
Time Standards (highlight to view): Grandmaster = 4:30, Master = 7:00, Expert = 14:00
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: Just in TIME? A hard Slitherlink puzzle from US Puzzle Team member Thomas Snyder, one of the “Answer Men” profiled in this week’s issue (subscription required).
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 = 3:15, Master = 4:30, Expert = 9:00
Note: Advice on solving this puzzle has now been posted in “Ask Dr. Sudoku #9”
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Double Diagonals
Rules: Standard Surplus Sudoku rules, with numbers from 1-8.
Answer String: Enter the 4th row from left to right, followed by a comma, followed by the 5th row from left to right.
Time Standards (highlight to view): Grandmaster = 1:45, Master = 2:45, Expert = 5:30
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: All for One and One for All
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 = 3:00, Master = 5:00, Expert = 10:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Not Your Standard 6×6 Sudoku! An homage to my favorite (10×10) puzzle from the original “Udoku” set of Deficit Sudoku by Wei-Hwa Huang.
Rules: Standard Deficit Sudoku rules, with numbers from 1-7.
Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 1st column from top to bottom.
Time Standards (highlight to view): Grandmaster = 1:00, Master = 1:30, Expert = 3:00
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: Parquet
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 = 0:45, Master = 1:15, Expert = 2:30
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between number placement, ship placement, and shading modes. The shading mode in gray, which numbers can be written on top of, may work better than default ship placement.)
Theme: Twister
Rules: Standard Battleship Sudoku rules.
Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 8th row from left to right.
Time Standard: Battleship Sudoku Grandmaster = 6:30, Master = 10:30, Expert = 21:00
Solution: PDF