5/11/2023 0 Comments Gamemaker studio 2 chess![]() In this algorithm, the recursive tree of all possible moves is explored to a given depth, and the position is evaluated at the ending “leaves” of the tree.Īfter that, we return either the smallest or the largest value of the child to the parent node, depending on whether it’s a white or black to move. This is done by using the Minimax algorithm. Next we’re going to create a search tree from which the algorithm can chose the best move. Playable on ĪDVERTISEMENT Step 3: Search tree using Minimax ![]() Black plays with the aid of the simple evaluation function. The only tangible improvement is that our algorithm will now capture a piece if it can. With the evaluation function, we’re able to create an algorithm that chooses the move that gives the highest evaluation: The simplest way to achieve this is to count the relative strength of the pieces on the board using the following table: Now let’s try to understand which side is stronger in a certain position. We’ll start by creating a function that just returns a random move from all of the possible moves:Īlthough this algorithm isn’t a very solid chess player, it’s a good starting point, as we can actually play against it: Black plays random moves. Using these libraries will help us focus only on the most interesting task: creating the algorithm that finds the best move. The starting position is used as input and the output is all the possible moves from that position. ![]() A visualization of the move generation function. Based on this, we can calculate all legal moves for a given board state. The move generation library basically implements all the rules of chess. We’ll use the chess.js library for move generation, and chessboard.js for visualizing the board. ADVERTISEMENT Step 1: Move generation and board visualization
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