Logic Puzzle!

You know that one logic puzzle with the labrynth guards? Well this is a copypasta of that with a twist, enjoy.

Three guards stand infront of three doors, one is the exit to the building, if you pick the wrong door you are stabbed, One always tells the truth, one always lies, and the 3rd stabs you if you ask questions more than 7 words long, and if you say more than 3 sentences.  What do?

>>22
For that approach to work you will have to write down that scheme for each of the six combinations of the defendants: KNS, KSN, NKS, NSK, SKN and SNK. Then you can check which combinations of statements happen for a single position of the spy.

For example, the statements NNN can be given by defendants NKS or SNK, so the judge would not have been able to tell if the spy was A or C, which means you can exclude the NNN possibility.