lhartikk / simple-chess-ai Goto Github PK

Would anyone be interested in writing an AI computer player for chess4321.com ?
There would need to be 3 of them with one real life player.
chess4321.com ( under construction) What year did I post this request?

The mini max function doesn't work if the opponent has a null move position.

The AI works great for finding mates in one. But in the sample positions below, the AI doesn't find the correct move because the opponent is in stalemate IF given a null move. I think it has to do with the AI reading the depth as being "0," and because of this, the AI quits calculating the minimax too early.

Here are sample positions where the opponent has no null ply move:

"https://lichess.org/analysis/standard/8/8/5p2/3k1bbK/8/4q3/8/8 b - - 0 1"
"https://lichess.org/analysis/standard/8/1b6/5p2/6p1/6Pp/7P/5k1K/r7 b - - 0 4"
"https://lichess.org/analysis/standard/3k4/8/4Q3/8/1B3K2/8/8/8 w - - 0 1"

Be sure to copy everything inside the link quotes.

All in all, I am pretty impressed! I play chess myself and I nearly got beaten by this thing on looking 4 moves ahead. Unfortunately though it does a poor job staying out of trouble. It looks four moves ahead and then makes a move that will keep it a pawn ahead for four moves before it gets a knight unavoidably taken. If you insert some manual code that makes your bot more defensive it might be better.

minimax function load full memory if selected depth is 5

The chessboard looks nice. If the chessboard can be more responsive, it will look better on any device