I just found a collection of Heyawake puzzles, so I figured it would be a good puzzle to profile next. Heyawake is also called “divided rooms.” Like Mochikoro, Heyawake is a binary-determination logic puzzle where the goal is to determine which blocks in a grid are filled in and which aren’t. Unlike Mochikoro, Heyawake has a nice wikipedia page.
In Heyawake, the grid is subdivided into rectangular “rooms.” Some rooms have a number in the corner to indicate how many squares should be filled in for that room. Of course, there are a series of rules governing how the squares should be filled in, otherwise it wouldn’t be a puzzle. From the wikipedia site:
- Rule 1: Painted cells may never be orthogonally connected (they may not share a side, although they can touch diagonally).
- Rule 2: All white cells must be interconnected (form a single polyomino).
- Rule 3: A number indicates exactly how many painted cells there must be in that particular room.
- Rule 4: A room which has no number may contain any number of painted cells (including the possibility of zero cells).
- Rule 5: Where a straight (orthogonal) line of connected white cells is formed, it must not pass through more than two rooms—in other words, any such line of white cells which connects three or more rooms is forbidden.
The aforementioned collection has plenty of puzzles of varying difficulty. It also has a nice example, in case someone is having trouble with the rules.
