Adversarial Search: Minimax Strategy Quiz
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Questions and Answers

What was one of the weaknesses that Kasparov pinpointed in Deep Blue?

  • Dependence on stochastic games
  • Inability to play adaptable human opponents (correct)
  • Lack of positional features in its software
  • Slow computation speed

    • What system configuration allowed the 1997 version of Deep Blue to reach about one billion chess positions per second?

  • Combining skills and chance elements
  • Use of chance nodes
  • Adjustable weights associated with positional features
  • 480 chess chips (correct)

    • What feature of the alpha-beta algorithm helped increase the search speed for Deep Blue in 1997?

  • Stochastic game elements
  • 40 billion search times increase (correct)
  • Adjusted weights for positional features
  • Adaptable human opponents

    • Which game involved a partial game tree shown in the text?

    <p>Backgammon</p> Signup and view all the answers

    What was the goal of Backgammon as described in the text?

    <p>Move all pieces off the board before the opponent does</p> Signup and view all the answers

    What is a defining characteristic of Stochastic games mentioned in the text?

    <p>Inclusion of a random element like throwing a die</p> Signup and view all the answers

    What is the maximum number of children a node can have in a Binary Tree?

    <p>At most two children</p> Signup and view all the answers

    Which search algorithm has a bigger issue with memory requirements compared to execution time?

    <p>Breadth First Search</p> Signup and view all the answers

    What is the time complexity of Depth First Search in terms of number of nodes stored?

    <p>$O(b^d)$</p> Signup and view all the answers

    What type of heuristic function is used in Informed Search like A* search?

    <p>Admissible heuristic function</p> Signup and view all the answers

    What does the evaluation function f(n) comprise in Best First Search algorithms?

    <p>$f(n) = g(n) + h(n)$</p> Signup and view all the answers

    What is the purpose of the straight-line distance heuristic in Informed Search?

    <p>To estimate the cost of reaching the goal state from any node</p> Signup and view all the answers

    What was Kasparov's rating at an all-time high?

    <p>2820</p> Signup and view all the answers

    Which chess program first demonstrated the effectiveness of an engineering approach emphasizing hardware speed?

    <p>Chess 4.5</p> Signup and view all the answers

    Which chess machine became the first national master program in the early 1980s?

    <p>Belle</p> Signup and view all the answers

    In which year did Deep Thought II claim a spot as a top chess program in the world?

    <p>1995</p> Signup and view all the answers

    Which chess machine won the second Fredkin Intermediate Prize for Grandmaster-level performance in 1988?

    <p>Deep Blue</p> Signup and view all the answers

    In which year did Deep Blue debut in the first Kasparov versus Deep Blue match?

    <p>1996</p> Signup and view all the answers

    What is the Minimax principle in adversarial search?

    <p>Computing the utility of being in a state assuming both players play optimally</p> Signup and view all the answers

    In Minimax, what is the value of a MAX node?

    <p>The highest value of all successor node values</p> Signup and view all the answers

    How many legal moves, on average, are there in Tic-Tac-Toe?

    <p>5</p> Signup and view all the answers

    What does 'bd' represent in the context of Chess in Minimax?

    <p>Product of the average branching factor and depth</p> Signup and view all the answers

    In multiplayer games with limited time, why is it not practical to search all leaves?

    <p>Due to constraints on time available for search</p> Signup and view all the answers

    What is one solution to make Minimax practical with limited time in multiplayer games?

    <p>Replace terminal evaluation with positions closer to the root</p> Signup and view all the answers

    What is the purpose of using pruning in a game tree?

    <p>To eliminate large parts of the tree</p> Signup and view all the answers

    In the expression Minimax(root) = max(min(3, 12, 8), min(2, X, Y), min(14, 5, 2)), what does the 'min' function do?

    <p>Selects the minimum value</p> Signup and view all the answers

    What values do 'X' and 'Y' represent in the expression Minimax(root) = max(min(3, 12, 8), min(2, X , Y), min(14, 5, 2))?

    <p>Unknown values</p> Signup and view all the answers

    What is the purpose of keeping track of 'alpha' and 'beta' in a game tree search?

    <p>To set bounds for minimizing search area</p> Signup and view all the answers

    How are Minimax decisions affected by the values of 'A', 'B', and 'Z'?

    <p>'A', 'B', and 'Z' are independent of Minimax decisions</p> Signup and view all the answers

    Which strategy is mentioned as performing a DFS (Depth-First Search) similar to Minimax?

    <p>'Alpha-beta pruning'</p> Signup and view all the answers

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