Answer by David J. for 2 Guards, 3 Keys, 2 Locks
This answer only assumes that the guards and the keys are taking up physical space, i.e. each guard has a door to which they are closest, and each door has a guard to which it is closest (i.e. a...
View ArticleAnswer by void for 2 Guards, 3 Keys, 2 Locks
Now you have one lock open and have eliminated a key, so ask the same question to the other guard, pointing at the remaining unopened lock.
View ArticleAnswer by Loduwijk for 2 Guards, 3 Keys, 2 Locks
Further clarification on the rules suggests that the problem is solvable. I will leave this answer as I find it humorous and interesting, but it was only true according to my original interpretation of...
View ArticleAnswer by John for 2 Guards, 3 Keys, 2 Locks
Totally using Deusovi's logic here, so credit to him: But I'm stuck if each guard doesn't have their own lock.
View ArticleAnswer by Nati for 2 Guards, 3 Keys, 2 Locks
I can figure out the fitting key for one lock specifically with the question: If I asked you which key you need for lock A, to which key would you point? Because: Obviously the truth teller points to...
View ArticleAnswer by Deusovi for 2 Guards, 3 Keys, 2 Locks
As long as the two locks are distinguishable somehow, this can easily be solved with a variation on the 'standard' trick: This works because: (If the two locks are indistinguishable, there is of course...
View Article2 Guards, 3 Keys, 2 Locks
There are 2 guards: one only tells the truth, the other only lies. There are 2 locks and 3 keys: each lock can only have 1 key matched - the 3rd key doesn't do anything. You can only ask one specific...
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