UPDATE: After some debate with udosuk (see comments), I’ve decided to adopt the rule that every cell must be either black or white, it can’t be left “undecided”. I’ve changed the original puzzle accordingly so you can download it now.
At the end of last year, I announced that I will be introducing more types of number-logic puzzles on this site.
First up – HITORI puzzles.
Goal:
Eliminate duplicate numbers from each row and column by shading them black.
Rules of Hitori:
1. Two black cells must not touch each other horizontally or vertically. Diagonally is Ok.
2. All white cells must constitute one continuous area. In other words, there must be a path between any two white cells, without crossing “the wall” of black cells. Think of it as a maze.
Hitori puzzles can be of any size, from a tiny 4×4 (or even 3×3) to any size you can imagine. Today I’m presenting you a rather large one, 15×15 in size.
You can read how to solve Hitori by following that link.
Hitori 15×15 for February 7, 2009.
Hitori.
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