# Adversarial Search: Minimax Strategy Quiz

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## 30 Questions

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

Inability to play adaptable human opponents

480 chess chips

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

40 billion search times increase

Backgammon

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

Move all pieces off the board before the opponent does

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

Inclusion of a random element like throwing a die

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

At most two children

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

$O(b^d)$

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

$f(n) = g(n) + h(n)$

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

To estimate the cost of reaching the goal state from any node

2820

Chess 4.5

Belle

1995

Deep Blue

1996

### What is the Minimax principle in adversarial search?

Computing the utility of being in a state assuming both players play optimally

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

The highest value of all successor node values

5

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

Product of the average branching factor and depth

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

Due to constraints on time available for search

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

Replace terminal evaluation with positions closer to the root

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

To eliminate large parts of the tree

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

Selects the minimum value

Unknown values

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

To set bounds for minimizing search area

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

'A', 'B', and 'Z' are independent of Minimax decisions

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

'Alpha-beta pruning'

Test your knowledge on finding optimal strategies for Max using the minimax principle in adversarial search. Learn about depth-first search of game trees, identifying optimal leaf nodes, and propagating minimax values up the tree.

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