>>I've created a wiki page,
>>http://haskell.org/haskellwiki/The_Knights_Tour
>>I note the LogicT version is the shortest so far.
>>-- Don

Probably noob question. I was looking into the first solution in the
page and tried to replace

sortOn f = map snd . sortBy (comparing fst) . map (f &&& id)
for
sortOn' f = sortBy (comparing fst)

The first one was much faster? Why?

Thanks!
Diego
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