chess

I've implemented a minimax algorithm with alpha-beta pruning. In order to get the best move, I call the alpha-beta algorithm with the rootAlphaBeta function. However, in the rootAlphaBeta function, I spotted some very strange behaviour. When I call the rootAlphaBeta function with a ply of 4, it makes about 20 000 calls, but when I call the alphaBeta function directly, it makes only about 2000 calls. I can't seem to find what's the problem, as the number of calls should be the same. The move that both algorithms eventually find should be the same, right? I think so, at least the score of the

I'm planning on making a program that interfaces with a UCI chess engine. I've been doing some research on it, but I want to get a little more information before I get more in depth with it. I was wondering if any of you could provide a few example "exchanges" between a UCI engine and a front-end program. I'm not really concerned with the practical interface code (like sending/receiving commands), that should be simple enough. I'm just trying to get some good examples of a small game and some options. I'm using the stockfish engine currently, but I want to be able to use multiple engines. So

on win 7 i can communicate with a chess engine via commandline. Small Example Session with Stockfish on Win 7: C:\run\Stockfish>stockfish-x64.exe Stockfish 2.2.2 JA SSE42 by Tord Romstad, Marco Costalba and Joona Kiiski quit C:\run\Stockfish> The first line was output by the engine and the 'quit' was what i typed to quit the engine (There are other things i can do , but thats clear to me). Now i want to communicate with that engine from python: import subprocess engine = subprocess.Popen( 'stockfish-x64.exe', stdin=subprocess.PIPE, stdout=subprocess.PIPE, ) for line in engine.stdout: print

I am trying to get a feel of how to design and think in an Object Oriented manner and want to get some feedback from the community on this topic. The following is an example of a chess game that I wish to design in an OO manner. This is a very broad design and my focus at this stage is just to identify who is responsible for what messages and how the objects interact each other to simulate the game. Please point out if there are elements of bad design (high coupling, bad cohesion etc.) and how to improve on them. The Chess game has the following classes Board Player Piece Square ChessGame The

I would like to draw a chess board in D3: I would be satisfied with just being able to draw the initial game position (as above). It may be the case that one does not need image files for king, queen, knight, etc. (there are 12 distinct pieces) since they are all part of Unicode as codepoints 2654-265F: The Unicode characters appear in any modern browser: ♔ ♕ ♖ ♗ ♘ ♙ ♚ ♛ ♜ ♝ ♞ ♟ Unicode chess symbols on Wikipedia: here Python script to display chess board in a terminal using Unicode characters: here . Its result: Any pointers or help would be much appreciated. Here is the codepen of the