1. CPSC 433 Artificial Intelligence Search Modeling Practice Problems M. Reza Zakerinasab mrzakeri@ucalgary.ca Please include [CPSC433] in the subject line of any emails regarding this course. Slides originally created by Andrew M Kuipers.

2. CPSC 433 Artificial Intelligence What we need? Facts & States Search Modeling Paradigm Set based Search Modeling –Extension Rules And-tree Search Modeling –Erw  ((pr, ?), (pr, yes)) –Div function Or-tree Search Modeling –Erw  ((pr, ?), (pr, yes)) & Erw  ((pr, ?), (pr, no)) –Altern function

3. CPSC 433 Artificial Intelligence 8 Puzzle Classic “Sliding Boxes” puzzle –Re-arrange numbered tiles so that numbers are sequentially ordered (left-to-right) in box –Can only move tiles into the empty space from horizontally or vertically adjacent spaces 3 1 7 624 8 5 1 2 3 456 7 8

4. CPSC 433 Artificial Intelligence 4L 3L Water Jugs Goal: get exactly 2L into the 4L jug Allowable Actions: –Fill either jug completely –Empty either jug onto the ground –Empty one jug into the other –Top off one jug from the other

5. CPSC 433 Artificial Intelligence Missionaries and Cannibals There are N (where N  1) missionaries and N cannibals on the left bank of a river They have a rowboat with them, which can carry a maximum of two people, and needs at least one person to row across the river If there are one or more missionaries on a river bank, there cannot be more cannibals than missionaries on that bank How can all missionaries and cannibals be transported across the river?