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Decision question (Friedman, 2002): Does a given instance of Corral Puzzle have a solution? [1] This decision question is NP-complete. This is proven by reducing the decision problem of deciding the 3-colorability of a planar graph, which is known to be NP-complete, to a Corral Puzzle.
Solution to the previous puzzle. The binary determination puzzles LITS and Mochikoro, also published by Nikoli, are similar to Nurikabe and employ similar solution methods. The binary determination puzzle Atsumari is similar to Nurikabe but based upon a hexagonal tiling rather than a square tiling. Mochikoro is a variant of the Nurikabe puzzle:
For example, in a 7×7 puzzle, the maximum number that can be had in any cell is 13 (the cell itself, plus six others in the row, plus six other in the column). If a 13 appears in a cell of a 7×7 puzzle, all cells in the same row or column as the 13 must be white. This is often represented by placing dots in those cells.
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Hashiwokakero (橋をかけろ Hashi o kakero; lit. "build bridges!") is a type of logic puzzle published by Nikoli. [1] It has also been published in English under the name Bridges or Chopsticks (based on a mistranslation: the hashi of the title, 橋, means bridge; hashi written with another character, 箸, means chopsticks).
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Puzzle Uo Poko was solely designed by Toshiaki Tomizawa, a co-founder of Cave whose previous works include the DonPachi series. [5] [6] [7] Puzzle Uo Poko was released in Japanese arcades by Jaleco in February 1998. [8] Unlike several other releases by Cave, Uo Poko remained exclusive to arcades and did not see a contemporary port for a home ...
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