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Subtraction and division cages
http://www.calcudoku.org/forum/viewtopic.php?f=3&t=149
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Author:  pnm  [ Mon Jan 20, 2014 9:57 am ]
Post subject:  Re: Subtraction and division cages

jpassaro wrote:
Must it be positive 4, or can it potentially be -4 as well?

It can be -4, but only if -4 is the target result of the cage.

(so in that case it would have "-4-" as the clue)

jpassaro wrote:
For example, 0-1-3 = -4; could we use (0,1,3) as a solution for this cage?

No, because here the target result is 4.

Patrick

Author:  nicow  [ Wed Jan 22, 2014 12:41 pm ]
Post subject:  Re: Subtraction and division cages

@jpassaro: subtraction in a n-multicell cage is: take one of the cells, and subtract the other ones from it. So you have n solutions.
For instance in a 3-cell cage there are 3 solutions: a - (b + c) or b - (a + c) or c - (a + b)

"4-" is to be read as: the outcome is 4, en the way to do is '-'. You might put a comma in between as well: "4,-"

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