The Test of Wits

[NannaJoy]

I used the first five books to click in order - and then tried - if numbers were 1 and then 5 - clicking on first and then 6th .. working my way to square - neither resulted in a green square. Played enough .. passing.
just noted there was 1 book a certain color, 2 books another color .. hmm..
OK - that works. DUMB
and out

[MSmiss]

what was the arrow by the door for?

[clwulf]

out.. finally. that bookshelf occupied me a while but of course there was a reason why the books lit up..

[lawli88]

Ouch. Thanks for the hints, everyone. Out.