Johan
Joined: 22/12/2006 20:08:51
Messages: 1046
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This puzzle has some history. It was made and added to the PuzzlePicnic collection by connect4 in March 2008, but recently we learned the puzzle was already discovered back in 2005 by Catneven, who mentioned it in his master thesis on Skyscrapers puzzles.
After deliberation, we decided to overwrite the puzzle implemented by connect4, by the puzzle implemented by Catneven (puzzles that are obviously equivalent can look slightly different) and mention Catneven as the author, preserving the old puzzle ID and the information regarding if members solved it or not, and to give some credit to connect4 in this thread.
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