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16/07/2008 19:39:33
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mcbeth
Joined: 08/07/2008 23:02:00
Messages: 4
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Number: Puzzle #890
Genre: Stream Islands
Author: Maarten
Appeared at: July 15, 2008
Are we sure this has a unique solution? I have a solution that looks really good after repeated time separated checks that keeps being rejected. How do I check this (pretty new to the site)
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16/07/2008 22:21:19
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Maarten
Joined: 22/12/2006 20:10:10
Messages: 619
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I think the solution is unique, but of course, I make mistakes sometimes...
You can see my solution by pressing the "reveal" button. Is this solution the same as yours? If it is, then we may still have a bug with checking solutions (we had some problems with that before). If it is not, you may have found an alternate solution. Can you check which is the case?
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16/07/2008 22:49:26
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mcbeth
Joined: 08/07/2008 23:02:00
Messages: 4
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Mine was slightly different.
Hrm, can't attach files. Lets try this:
My solution:
http://broggs.org/~mcbeth/puzzlepicnic/McBethSolution.png
The official solution
http://broggs.org/~mcbeth/puzzlepicnic/OfficialSolution.png
The difference is in the bottom right, I take the 2 vertical and bunch up the 8 more.
I'm not inlining the images in case someone doesn't want to see spoilers
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16/07/2008 22:55:32
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Maarten
Joined: 22/12/2006 20:10:10
Messages: 619
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Ah, I see. I think you missed one of the constraints on the solution: it is not allowed for four cells in a square (2x2) to be all water, at least one of them has to be land.
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16/07/2008 22:58:20
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mcbeth
Joined: 08/07/2008 23:02:00
Messages: 4
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Ooh, I completely misunderstood that constraint. My apologies. The way I was reading it made it a redundant constraint with the"all connected" part.
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16/07/2008 23:04:26
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Maarten
Joined: 22/12/2006 20:10:10
Messages: 619
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No problem, I'm glad it's clarified now. Hmm... maybe the word "lake" is a bit misleading...
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