Talk:4-rings or 4-squares puzzle: Difference between revisions
→Why nearly all write "non-unique solutions" ?
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So maximum of 336 combinations (7*6*4*2) to test, rather than 5040 permutations of all 7.
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--[[User:Nigel Galloway|Nigel Galloway]] ([[User talk:Nigel Galloway|talk]]) 18:29, 25 January 2017 (UTC)
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