or solve online (using our beta test of Penpa-Edit tools)
Theme: Our 72nd prescription. But who’s counting?
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 = 7:30, Master = 10:30, Expert = 21:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Rubber Band – the set of middle clues will stretch your mind a bit.
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 = 2:15, Master = 3:00, Expert = 6:00
Solution: PDF
or solve online (using our beta test of Penpa-Edit tools)
Theme: Nurikabe Time; don’t wait for the 13th hour to figure out where all the clock islands go.
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 = 3:00, Expert = 9:00, Novice = 30:00
Solution: PDF and solving video; advice on solving this puzzle has also been posted in “Ask Dr. Sudoku #2“.
or solve online (using our beta test of Penpa-Edit tools)
Theme: Imbalance – the lower-left is slightly heavier than the upper-right, and is distributed less evenly, affecting the solve.
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 = 1:45, Expert = 5:15, Novice = 17:30
Solution: PDF
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