Sure, here's an example of a simple AI chess game implemented as a single HTML file with JavaScript.
AI Chess
This example creates a simple chessboard using HTML `<table>` and populates it with chess piece pictograms represented by their Unicode values. The game logic and AI implementation are yet to be developed but you can start by replacing the dummy AI move function (`makeAIMove`) with your own implementation.
The game will start as soon as the web page is loaded. On a smartphone, the player can tap on a cell on the chessboard to make a move, and the AI will make its move immediately afterward.