Akari (aka Light Up)

Rules and Tips for standard puzzle types, and their variants

Akari (aka Light Up)

Postby nickdeller » Wed 15 Dec, 2010 1:44 pm

First draft rules text is adapted from that at nikoli.com

Place light bulbs (circles) according to the following rules:
1. A number in a black square indicates how many light bulbs are in the vertically and horizontally adjacent squares.
2. Light bulbs can be placed in any white square - it does not need to be adjacent to a black square.
3. Each light bulb illuminates every square in its row and column until it hits a black square or the edge of the grid.
4. All white squares must be illuminated, and light bulbs must never illuminate each other.
Last edited by nickdeller on Tue 18 Jan, 2011 3:40 pm, edited 1 time in total.
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Re: Akari (aka Light Up)

Postby Mephisto » Tue 18 Jan, 2011 3:33 pm

Suggestion:

1. Light bulbs can be placed in any white square, but a number indicates how many light bulbs are in the vertically and horizontally adjacent squares. -> 1. Light bulbs can be placed in any white square (not only adjacent to black squares). A number in a black square indicates how many light bulbs are in the vertically and horizontally adjacent squares.

3. All white squares must be illuminated, and light bulbs should never illuminate each other. -> must, not should.
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Re: Akari (aka Light Up)

Postby nickdeller » Tue 18 Jan, 2011 3:41 pm

Thanks Mephisto,

I've slightly adapted your suggestion to split rule 1 into two rules. Does that seem OK?
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