By looking further into possible moves by you and your opponent, it determines the best possible move for you in that particular instance. Like any excellent chess player, the engine looks deeply into every single position. Once the evaluation is complete, the search function begins. They provide more accurate results, along with a list of major moves that would leave players with a stronger hold on the board. Neural net engines that are now popular evaluate the board a little differently. This is only true for traditional chess engines as they were designed to mimic the way humans played chess. The resulting eval is calculated up to a single number. Although most chess engines work differently, this is the basis on which they all calculate winning positions. This is a number that calculates the standard value of each piece.Īs the evaluation continues, the chess engines look at all the material value on both sides, the visible threats from the opponent’s side as well as yours, the safety of the king, and the pawn structure. During this process, all chess engines display something called an eval. While evaluating, a chess engine looks at all pieces and ascertains the position that would be better for each. How does a Chess Engine Work?Ī standard chess engine comes with two functions – a Search function and an Evaluate function. After 2005, chess engines surpassed human knowledge and became significantly stronger players than even grandmasters. From then on, programmers around the world worked on making the chess engine more efficient. Alan Turing, a famous mathematician, wrote a computer program that could play chess. It wasn’t until the year 1951 that things began to change. They didn’t have the processing power to search for possible winning moves. The earliest versions of chess engines were simply unable to cope with the depth of chess. It does not have any windowing or user-friendly graphics. Instead, it’s a backend program with a command-line interface. Keep in mind that a chess engine isn’t a machine that you can move around, nor is it an application. It analyses the positions of all the pieces on the chess board and creates a list of a variety of moves that could be considered the strongest. It does several evaluations and searches before reaching the best possible solution. What is a Chess Engine?Īlthough called an ‘engine’, a chess engine is nothing but a sophisticated software program that can play chess and analyse different moves. However, this brings us to an important question – how do chess engines work? But before we understand that, we’ll take a brief look at the history of chess engines. Unlike earlier times when Grandmasters would spend days trying to get to the bottom of each move, chess engines give you the results within seconds. This is because these engines can analyse the best moves in different positions. These days, you won’t find a professional chess player without a well-equipped chess engine.
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