Entendu
Entendu
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April 28th, 2021 at 10:54:15 PM permalink
In Ask the Wizard #334 (/ask-the-wizard/334/) there is a puzzle by David Pleacher. The given solution seems to be in error if I am reading the rules correctly.

The rules say “You may not take a path of the same color twice in a row. In other words, at every square you must change to a path of another color.” Yet the given solution has the path 9 to 10 to 1, which is two blue paths in a row. I am not sure if the puzzle is otherwise solvable.

Am I missing something?
Gialmere
Gialmere
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April 28th, 2021 at 11:20:09 PM permalink
From the math puzzle thread...
Have you tried 22 tonight? I said 22.
ThatDonGuy
ThatDonGuy
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April 29th, 2021 at 6:00:59 AM permalink
Quote: Entendu

Am I missing something?


In a way, yes. If you look at the image, the black line has the correct solution. In the written solution, remove everything between 9 and 17, and between 17 and 9.
Wizard
Administrator
Wizard
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April 29th, 2021 at 6:04:57 AM permalink
Quote: Entendu

In Ask the Wizard #334 (/ask-the-wizard/334/) there is a puzzle by David Pleacher. The given solution seems to be in error if I am reading the rules correctly.



You are absolutely right. Thank you for the correction. Here is the corrected puzzle, redrawn by me.







"For with much wisdom comes much sorrow." -- Ecclesiastes 1:18 (NIV)
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