or solve online (using our beta test of Penpa-Edit tools)
Theme: 234
Rules: Standard Skyscrapers rules.
Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 3rd row from left to right.
Time Standards (highlight to view): Grandmaster = 3:30, Master = 4:15, Expert = 8:30
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
This is a “Twisted Tuesday” puzzle variation.
Theme: Inverted Clues
Rules: Variation of Cross the Streams rules. The clues in this puzzle are inverted. They indicate the WHITE (unshaded) areas, not the black areas as in other Cross the Streams. The shaded cells must still obey the regular rules (connectivity, no 2×2 squares).
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 = 2:15, Master = 3:30, Expert = 7:00
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
or solve online (using our beta test of Penpa-Edit tools)
Theme: Clue symmetry and 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 = 4:30, Master = 7:30, Expert = 15:00
Solution: PDF
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)
This is a “Franken-Friday” puzzle variation.
Theme: Prime Time
Rules: Standard Cave rules, except the grid is hexagonal.
Answer String: Enter the length in cells of each of the internal cave 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 = 6:00, Master = 8:30, Expert = 17:00
Solution: PDF
Note: Follow 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: Antisymmetry!
Rules: Standard Statue Park rules. The given subset of the pentominoes is to be used in this puzzle, with rotations and reflections allowed.
Answer String: Enter the length in cells of each of the shaded segments 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 = 2:30, Master = 3:45, Expert = 7:30
Solution: PDF
Note: Follow this link for other Statue Park Puzzles. If you are new to this puzzle type, here are our easiest Statue Parks to get started on.
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: Wheel
Rules: Standard Tight Fit Sudoku rules. Range is 1-10.
Answer String: Enter the 2nd column from top to bottom, followed by a comma, followed by the 5th column from top to bottom. Enter both digits for the 10’s. (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 = 4:00, Master = 7:15, Expert = 14:30
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; use tab to alternate between “big” sudoku and “small” number entry modes.)
This is a “Twisted Tuesday” puzzle variation.
Theme: Cage symmetry and repeated clue values
Rules: Variation of standard TomTom rules. The indicated range [1-6] is larger than usual for a 4 x 4 puzzle. Some cells containing slashes require two digits to be placed. These cells should be treated as fractional values (top value over bottom value) for the purposes of solving the puzzle.
Answer String: Enter the 3rd row from left to right, followed by a comma, followed by the 4th row from left to right. (Note: for the cells with slashes, enter the top before the bottom.)
Time Standards (highlight to view): Grandmaster = 2:30, Master = 3:30, Expert = 7:00
Solution: PDF
Note: Follow this link for other classic TomTom. If you are new to this puzzle type, here are our easiest TomTom to get started on.
or solve online (using our beta test of Penpa-Edit tools)
Theme: Logical
Answer String: Enter the length in cells of each of the shaded segments 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 = 1:20, Master = 2:30, Expert = 5:00
Solution: PDF
(View image directly for larger form.)
or solve online (using our beta test of Penpa-Edit tools)
Theme: Clue symmetry and 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 = 8:30, Master = 12:00, Expert = 24:00
Solution: PDF