Fail getting some more hints by disqualifying conditions

tests/fail_hint_maze.log

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+## Fail to get maze hint by being empty-handed (fuzzed)
+n
+seed 25508795
+in
+take lamp
+xyzzy
+on
+e
+take cage
+w
+w
+w
+take
+w
+d
+d
+free bird
+w
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+w
+e
+s
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