or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between Sudoku entry modes and a shading mode to mark off clues.)
Theme: Four Nonets
Rules: Standard Outside Sudoku rules.
Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 5th column from top to bottom.
Time Standard: Outside Sudoku Grandmaster = 2:15, Master = 3:00, Expert = 6:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: A little of everything — the rows have clues from 1 to 6.
Rules: Standard Skyscrapers rules.
Answer String: Enter the 4th row from left to right, followed by a comma, followed by the 5th column from top to bottom.
Time Standard: Skyscrapers Grandmaster = 1:00, Master = 1:45, Expert = 3:30
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Hashtag Fun? A consecutive sudoku with a large # in the middle.
Rules: Standard Consecutive Sudoku rules.
Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 7th row from left to right.
Time Standard: Consecutive Sudoku Master = 2:00, Expert = 6:00, Novice = 20:00
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: Our 25th prescription! Enjoy this easy Masyu 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 Standard: Masyu Master = 0:30, Expert = 1:30, Novice = 5:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Diagonals (two more than yesterday!)
Rules: Standard Arrow Sudoku rules. Range is 1-6.
Answer String: Enter the 2nd column from top to bottom, followed by a comma, followed by the 4th column from top to bottom.
Time Standard: Arrow Sudoku Master = 1:00, Expert = 3:00, Novice = 10:00
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; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)
Theme: Ascending/Descending Diagonal
Answer String: Enter the length in cells of each of the cave segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma.
Time Standard: Cave Master = 1:00, Expert = 3:00, Novice = 10:00
Solution: PDF
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.
or solve online (using our beta test of Penpa-Edit tools)
Theme: Downward Spiral
Rules: Standard Star Battle rules. One star per row, column, and region.
Answer String: For each row from top to bottom, enter the number of the first column from the left where a star appears. Enter these numbers as a single string with no separators.
Time Standard: Star Battle Master = 0:45, Expert = 2:15, Novice = 7:30
Solution: PDF
Note: Follow this link for other classic Star Battles and this link for Star Battle variations. If you are new to this puzzle type, here are our easiest Star Battles to get started on. More Star Battle puzzles can be found in The Art of Puzzles, in the book Star Battle by JinHoo Ahn, and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.
or solve online (using our beta test of Penpa-Edit tools)
Theme: Grandmaster Puzzles (the G and P shapes in the corners)
Rules: Standard Thermo-Sudoku rules. Range is 1-6.
Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 4th column from top to bottom.
Time Standard: Thermo-Sudoku Master = 0:45, Expert = 2:15, Novice = 7:30
Solution: PDF
Note: Follow this link for more Thermo-Sudoku puzzles. If you are new to this puzzle type, here are our easiest Thermo-Sudoku to get started on. More Thermo-Sudoku puzzles can be found in The Art of Sudoku 2.
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between Sudoku = big entries and Number candidate = small entries in the corners of cells.)
Theme: Somewhere Over/Under the Rainbow
Rules: Standard Tight Fit Sudoku rules. Range is 1-8.
Answer String: Enter the 2nd column from top to bottom, followed by a comma, followed by the 5th column from top to bottom. (Note: for the tight fit cells, enter the top digit before the bottom digit as would be normal for the read order of the digits.)
Time Standard: TFSudoku Master = 1:30, Expert = 4:30, Novice = 15:00
Solution: PDF
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. More Tight Fit Sudoku can be found in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli and in The Art of Sudoku 2.
or solve online (using our beta test of Penpa-Edit tools)
Theme: Twin Islands
Rules: Standard Nurikabe rules.
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 Standard: Nurikabe Master = 1:00, Expert = 3:00, Novice = 10:00
Solution: PDF