%%% EX 11 - CSP
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-15pt: constraint 3 wrongly validated.
-25pt: wrong solution.

%%% EX 12 - AlphaBeta Pruning
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-20pt: wrong pruning operation in the right branch.
-20pt: missing pruning operation on the last right branch.

%%% EX 13 - A*
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-10pt: error at step 9.

%%% EX 14 - Planning
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Wrong.

%%% EX 15 - LRTA
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-5pt: minor errors in agent knowledge.