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optimizationminimaxalpha-beta-pruningothello

Understanding minimax with alpha beta pruning


Sorry for the image, it's straight from my notes.

alpha

I've been reading over minimax trees and alpha data pruning for the last day and a bit in preparation for my project. Which is an implementation for Othello in c.

I have read a ton of resources about it, and I know it gets asked a lot. Before I start my evaluation functions I would like to understand this fully.

In the attached image, I cannot figure out what the function Min_Node(pos) and Max_Node(pos) would do exactly, any input would be greatly appreciated.

If anyone has any tips or things I should look out for when implementing this and my evaluation function for Othello, I'm willing to take any help I can find.


Solution

  • I managed to figure out what max and min node was, in this case, Max_Node(pos) checks to see if this is the player, and it returns true because this should be maximized and Min_Node(pos) checks if its the opponent, if true, then it should be minimized.