or solve online (using our beta test of Penpa-Edit tools)
This is a “Twisted Tuesday” puzzle variation.
Theme: Big City
Rules: Standard Sudoku rules. Also, standard Skyscrapers rules.
Answer String: Enter the 8th column from top to bottom, followed by a comma, followed by the 9th column from top to bottom.
Time Standards (highlight to view): Grandmaster = 4:00, Master = 6:30, Expert = 13:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Powers of Two
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 Standards (highlight to view): Grandmaster = 1:15, Master = 1:45, Expert = 3:30
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
This is a “Twisted Tuesday” puzzle variation.
Theme: TomTomTom: The Next Dimension?
Rules: Variation of TomTom rules, using digits from 1-8. In this variation, similar to Isodoku, the rows bend along the surface of an apparent cube.
Answer String: Enter the marked “column” A, starting at the arrow, followed by a comma, followed by the marked “column” B.
Time Standards (highlight to view): Grandmaster = 2:45, Master = 5:00, Expert = 10:00
Solution: PDF
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: Diagonals
Rules: Standard Tight Fit Sudoku rules. Range is 1-8.
Answer String: Enter the 1st column from top to bottom, followed by a comma, followed by the 6th column from top to bottom. (Note: for the tight fit cells, enter the top before the bottom as would be normal for the read order.)
Time Standards (highlight to view): Grandmaster = 0:50, Master = 1:15, Expert = 2:30
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 in linex mode where left click+drag draws lines and right click marks X’s)
This is a “Twisted Tuesday” puzzle variation.
Theme: Totally symmetric?
Rules: Standard Masyu rules. Also, all possible white and black circles have been given. (In other words, the loop cannot turn in any unlabeled spot and then continue straight in the next two cells as that should be a black circle; the loop also cannot go straight in any unlabeled spot and then turn in one of the adjoining cells as that should be a white circle.)
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 = 2:30, Master = 4:00, Expert = 8:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Middles
Rules: Standard Skyscrapers rules.
Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 5th row from left to right.
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)
Theme: Diagonals
Rules: Standard Tile Sudoku rules.
Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 12th row from left to right.
Time Standards (highlight to view): Grandmaster = 3:00, Master = 4:45, Expert = 9:30
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Double Vision
Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 9th row from left to right.
Time Standards (highlight to view): Grandmaster = 1:30, Master = 2:00, Expert = 4:00
Solution: PDF
Note: Follow this link for other classic Sudoku. If you are new to this puzzle type, here are our easiest Sudoku to get started on. More classic Sudoku puzzles can be found in The Art of Sudoku, The Art of Sudoku 2 and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.
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 “Twisted Tuesday” puzzle variation.
Theme: Mostly themeless, besides the variation itself.
Rules: Variation of standard Fillomino rules. In addition to polyominoes of the same size not being allowed to touch, polyominoes that differ in size by one (for example, 3 and 4) also cannot touch.
Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Start with the 5th row, followed by a comma, followed by the 8th row.
Time Standards (highlight to view): Grandmaster = 2:30, Master = 3:15, Expert = 6:30
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: Ray Gun
Rules: Standard Star Battle rules.
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 Standards (highlight to view): Grandmaster = 1:00, Master = 1:30, Expert = 3:00
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.