I think there is a bug in the "Moria Doors" task evaluation.
It fails with a TypeError on Test 2/2, testing find_word(u"Speak friend and enter.")
I'm quite sure that leading 'u' outside of the quotation marks.
Please see the attached screenshot.
Cheers, Sven
From: http://www.checkio.org/mission/gate-puzzles/solve/
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Created at: Feb. 14, 2016, 12:14 p.m.; Updated at: Feb. 15, 2016, 7:50 p.m.